MVISION Insights: Quantum Ransomware
Technical Articles ID:
KB95692
Last Modified: 5/19/2022
Last Modified: 5/19/2022
Environment
IMPORTANT: This Knowledge Base article discusses a specific threat that is being automatically tracked by MVISION Insights technology. The content is intended for use by MVISION Insights users, but is provided for general knowledge to all customers. Contact us for more information about MVISION Insights.
Summary
Description of Campaign
A threat actor used IcedID contained in an ISO image to infect systems with the Quantum ransomware family. The operation used PsExec, Net, ipconfig, Nltest, IcedID, AdFind, and Cobalt Strike to carry out the infection process. The attacker gathered a range of system information from the device but wasn't observed exfiltrating the data before encryption.
Our ATR Team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by DFIR and shared publicly.
How to use this article:Threat Hunting
This Knowledge Base article discusses a specific threat that's being tracked. The list of IOCs will change over time; check MVISION Insights for the latest IOCs.
Campaign IOC
Minimum Content Versions
Detection Summary
Minimum set of Manual Rules to improve protection to block this campaign:
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
Endpoint Security - Advanced Threat Protection:
Host Intrusion Prevention:
Aggressive set of Manual Rules to improve protection to block this campaign:
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
VirusScan Enterprise - Access Protection Rules:
Host Intrusion Prevention:
A threat actor used IcedID contained in an ISO image to infect systems with the Quantum ransomware family. The operation used PsExec, Net, ipconfig, Nltest, IcedID, AdFind, and Cobalt Strike to carry out the infection process. The attacker gathered a range of system information from the device but wasn't observed exfiltrating the data before encryption.
Our ATR Team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports. This campaign was researched by DFIR and shared publicly.
How to use this article:
- If a Threat Hunting table has been created, use the rules contained to search for malware related to this campaign.
- Review the product detection table and confirm that your environment is at least on the specified content version.
To download the latest content versions, go to the Security Updates page. - Scroll down and review the "Product Countermeasures" section of this article. Consider implementing them if they are not already in place.
- Review
KB91836 - Countermeasures for entry vector threats . - Review KB87843 - Dynamic Application Containment rules and best practices.
- Review KB82925 - Identify what rule corresponds to an Adaptive Threat Protection and Threat Intelligence Exchange event.
YARA Rule Set Author: The DFIR Report Date: 2022-04-24 Identifier: Quantum Case 12647 Reference: https://thedfirreport.com */ /* Rule Set ----------------------------------------------------------------- */ import "pe" rule docs_invoice_173 { meta: description = "IcedID - file docs_invoice_173.iso" author = "The DFIR Report" reference = "https://thedfirreport.com" date = "2022-04-24" hash1 = "5bc00ad792d4ddac7d8568f98a717caff9d5ef389ed355a15b892cc10ab2887b" strings: $x1 = "dar.dll,DllRegisterServer!%SystemRoot%\\System32\\SHELL32.dll" fullword wide $x2 = "C:\\Windows\\System32\\rundll32.exe" fullword ascii $s3 = "C:\\Users\\admin\\Desktop\\data" fullword wide $s4 = "Desktop (C:\\Users\\admin)" fullword wide $s5 = "AppPolicyGetProcessTerminationMethod" fullword ascii $s6 = "1t3Eo8.dll" fullword ascii $s7 = ")..\\..\\..\\..\\Windows\\System32\\rundll32.exe" fullword wide $s8 = "DAR.DLL." fullword ascii $s9 = "dar.dll:h" fullword wide $s10 = "document.lnk" fullword wide $s11 = "DOCUMENT.LNK" fullword ascii $s12 = "6c484a379420bc181ea93528217b7ebf50eae9cb4fc33fb672f26ffc4ab464e29ba2c0acf9e19728e70ef2833eb4d4ab55aafe3f4667e79c188aa8ab75702520" ascii $s13 = "03b9db8f12f0242472abae714fbef30d7278c4917617dc43b61a81951998d867efd5b8a2ee9ff53ea7fa4110c9198a355a5d7f3641b45f3f8bb317aac02aa1fb" ascii $s14 = "d1e5711e46fcb02d7cc6aa2453cfcb8540315a74f93c71e27fa0cf3853d58b979d7bb7c720c02ed384dea172a36916f1bb8b82ffd924b720f62d665558ad1d8c" ascii $s15 = "7d0bfdbaac91129f5d74f7e71c1c5524690343b821a541e8ba8c6ab5367aa3eb82b8dd0faee7bf6d15b972a8ae4b320b9369de3eb309c722db92d9f53b6ace68" ascii $s16 = "89dd0596b7c7b151bf10a1794e8f4a84401269ad5cc4af9af74df8b7199fc762581b431d65a76ecbff01e3cec318b463bce59f421b536db53fa1d21942d48d93" ascii $s17 = "8021dc54625a80e14f829953cc9c4310b6242e49d0ba72eedc0c04383ac5a67c0c4729175e0e662c9e78cede5882532de56a5625c1761aa6fd46b4aefe98453a" ascii $s18 = "24ed05de22fc8d3f76c977faf1def1d729c6b24abe3e89b0254b5b913395ee3487879287388e5ceac4b46182c2072ad1aa4f415ed6ebe515d57f4284ae068851" ascii $s19 = "827da8b743ba46e966706e7f5e6540c00cb1205811383a2814e1d611decfc286b1927d20391b22a0a31935a9ab93d7f25e6331a81d13db6d10c7a771e82dfd8b" ascii $s20 = "7c33d9ad6872281a5d7bf5984f537f09544fdee50645e9846642206ea4a81f70b27439e6dcbe6fdc1331c59bf3e2e847b6195e8ed2a51adaf91b5e615cece1d3" ascii condition: uint16(0) == 0x0000 and filesize < 600KB and 1 of ($x*) and 4 of them } rule quantum_license { meta: description = "IcedID - file license.dat" author = "The DFIR Report" reference = "https://thedfirreport.com" date = "2022-04-24" hash1 = "84f016ece77ddd7d611ffc0cbb2ce24184aeee3a2fdbb9d44d0837bc533ba238" strings: $s1 = "W* |[h" fullword ascii $s2 = "PSHN,;x" fullword ascii $s3 = "ephu\"W" fullword ascii $s4 = "LwUw9\\" fullword ascii $s5 = "VYZP~pN," fullword ascii $s6 = "eRek?@" fullword ascii $s7 = "urKuEqR" fullword ascii $s8 = "1zjWa{`!" fullword ascii $s9 = "YHAV{tl" fullword ascii $s10 = "bwDU?u" fullword ascii $s11 = "SJbW`!W" fullword ascii $s12 = "BNnEx1k" fullword ascii $s13 = "SEENI3=" fullword ascii $s14 = "Bthw?:'H*" fullword ascii $s15 = "NfGHNHC" fullword ascii $s16 = "xUKlrl'>`" fullword ascii $s17 = "gZaZ^;Ro2" fullword ascii $s18 = "JhVo5Bb" fullword ascii $s19 = "OPta)}$" fullword ascii $s20 = "cZZJoVB" fullword ascii condition: uint16(0) == 0x44f8 and filesize < 1000KB and 8 of them } rule quantum_p227 { meta: description = "Cobalt Strike - file p227.dll" author = "The DFIR Report" reference = "https://thedfirreport.com" date = "2022-04-24" hash1 = "c140ae0ae0d71c2ebaf956c92595560e8883a99a3f347dfab2a886a8fb00d4d3" strings: $s1 = "Remote Event Log Manager4" fullword wide $s2 = "IIdRemoteCMDServer" fullword ascii $s3 = "? ?6?B?`?" fullword ascii /* hex encoded string 'k' */ $s4 = "<*=.=2=6=<=\\=" fullword ascii /* hex encoded string '&' */ $s5 = ">'?+?/?3?7?;???" fullword ascii /* hex encoded string '7' */ $s6 = ":#:':+:/:3:7:" fullword ascii /* hex encoded string '7' */ $s7 = "2(252<2[2" fullword ascii /* hex encoded string '"R"' */ $s8 = ":$;,;2;>;F;" fullword ascii /* hex encoded string '/' */ $s9 = ":<:D:H:L:P:T:X:\\:`:d:h:l:p:t:x:|:" fullword ascii $s10 = "%IdThreadMgr" fullword ascii $s11 = "AutoHotkeys $s13 = ":dmM:\\m" fullword ascii $s14 = "EFilerErrorH" fullword ascii $s15 = "EVariantBadVarTypeErrorL" fullword ascii $s16 = "IdThreadMgrDefault" fullword ascii $s17 = "Set Size Exceeded.*Error on call Winsock2 library function %s&Error on loading Winsock2 library (%s)" fullword wide $s18 = "CopyMode0" fullword ascii $s19 = "TGraphicsObject0" fullword ascii $s20 = "THintWindow8" fullword ascii condition: uint16(0) == 0x5a4d and filesize < 2000KB and ( pe.imphash() == "c88d91896dd5b7d9cb3f912b90e9d0ed" or 8 of them ) } rule Ulfefi32 { meta: description = "IcedID - file Ulfefi32.dll" author = "The DFIR Report" reference = "https://thedfirreport.com" date = "2022-04-24" hash1 = "6f6f71fa3a83da86d2aba79c92664d335acb9d581646fa6e30c35e76cf61cbb7" strings: $s1 = "WZSKd2NEBI.dll" fullword ascii $s2 = "3638df174d2e47fbc2cdad390fdf57b44186930e3f9f4e99247556af2745ec513b928c5d78ef0def56b76844a24f50ab5c3a10f6f0291e8cfbc4802085b8413c" ascii $s3 = "794311155e3d3b59587a39e6bdeaac42e5a83dbe30a056a059c59a1671d288f7a7cdde39aaf8ce26704ab467e6e7db6da36aec8e1b1e0a6f2101ed3a87a73523" ascii $s4 = "ce37d7187cf033f0f9144a61841e65ebe440d99644c312f2a7527053f27664fc788a70d4013987f40755d30913393c37067fb1796adece94327ba0d8dfb63c10" ascii $s5 = "bacefbe356ece5ed36fa3f3c153e8e152cb204299243eba930136e4a954e8f6e4db70d7d7084822762c17da1d350d97c37dbcf226c5d4faa7e78765fd5aa20f8" ascii $s6 = "acee4914ee999f6158bf7aa90e2f9640d51e2b046c94df4301a6ee1658a54d44e423fc0a5ab3b599d6be74726e266cdb71ccd0851bcef3bc5f828eab7e736d81" ascii $s7 = "e2d7e82b0fe30aa846abaa4ab85cb9d47940ec70487f2d5fb4c60012289b133b44e8c244e3ec8e276fa118a54492f348e34e992da07fada70c018de1ff8f91d4" ascii $s8 = "afd386d951143fbfc89016ab29a04b6efcefe7cd9d3e240f1d31d59b9541b222c45bb0dc6adba0ee80b696b85939ac527af149fdbfbf40b2d06493379a27e16b" ascii $s9 = "3bb43aa0bbe8dee8d99aaf3ac42fbe3ec5bd8fa68fb85aea8a404ee1701aa8b2624bf8c5254e447818057b7f987a270103dd7beceb3103a66d5f34a2a6c48eed" ascii $s10 = "a79e1facc14f0a1dfde8f71cec33e08ed6144aa2fd9fe3774c89b50d26b78f4a516a988e412e5cce5a6b6edb7b2cded7fe9212505b240e629e066ed853fb9f6b" ascii $s11 = "69f9b12abc44fac17d92b02eb254c9dc0cfd8888676a9e59f0cb6d630151daccea40e850d615d32d011838f8042a2d6999fab319f49bed09e43f9b6197bf9a66" ascii $s12 = "cfda9d35efe288ebc6a63ef8206cd3c44e91f7d968044a8a5b512c59e76e937477837940a3a6c053a886818041e42f0ce8ede5912beab0b9b8c3f4bae726d5b2" ascii $s13 = "a8a404ee1701aa8b2624bf8c5254e447818057b7f987a270103dd7beceb3103a66d5f34a2a6c48eedc90afe65ba742c395bbdb4b1b12d96d6f38de96212392c3" ascii $s14 = "900796689b72e62f24b28affa681c23841f21e2c7a56a18a6bbb572042da8717abc9f195340d12f2fae6cf2a6d609ed5a0501e34d3b31f8151f194cdb8afc85e" ascii $s15 = "35560790835fe34ed478758636d3b2b797ba95c824533318dfb147146e2b5debb4f974c906dce439d3c97e94465849c9b42e9cb765a95ff42a7d8b27e62d470a" ascii $s16 = "0b3d20f3cf0f6b3a53c53b8f50f9116edd412776a8f218e6b0d921ccfeeb34875c4674072f84ac612004d8162a6b381f5a3d1f6d70c03203272740463ff4bcd5" ascii $s17 = "72f69c37649149002c41c2d85091b0f6f7683f6e6cc9b9a0063c9b0ce254dddb9736c68f81ed9fed779add52cbb453e106ab8146dab20a033c28dee789de8046" ascii $s18 = "f2b7f87aa149a52967593b53deff481355cfe32c2af99ad4d4144d075e2b2c70088758aafdabaf480e87cf202626bde30d32981c343bd47b403951b165d2dc0f" ascii $s19 = "9867f0633c80081f0803b0ed75d37296bac8d3e25e3352624a392fa338570a9930fa3ceb0aaee2095dd3dcb0aab939d7d9a8d5ba7f3baac0601ed13ffc4f0a1e" ascii $s20 = "3d08b3fcfda9d35efe288ebc6a63ef8206cd3c44e91f7d968044a8a5b512c59e76e937477837940a3a6c053a886818041e42f0ce8ede5912beab0b9b8c3f4bae" ascii condition: uint16(0) == 0x5a4d and filesize < 100KB and ( pe.imphash() == "81782d8702e074c0174968b51590bf48" and ( pe.exports("FZKlWfNWN") and pe.exports("IMlNwug") and pe.exports("RPrWVBw") and pe.exports("kCXkdKtadW") and pe.exports("pLugSs") and pe.exports("pRNAU") ) or 8 of them ) } rule quantum_ttsel { meta: description = "quantum - file ttsel.exe" author = "The DFIR Report" reference = "https://thedfirreport.com" date = "2022-04-24" hash1 = "b6c11d4a4af4ad4919b1063184ee4fe86a5b4b2b50b53b4e9b9cc282a185afda" strings: $s1 = "DSUVWj ]" fullword ascii $s2 = "WWVh@]@" fullword ascii $s3 = "expand 32-byte k" fullword ascii /* Goodware String - occured 1 times */ $s4 = "E4PSSh" fullword ascii /* Goodware String - occured 2 times */ $s5 = "tySjD3" fullword ascii $s6 = "@]_^[Y" fullword ascii /* Goodware String - occured 3 times */ $s7 = "0`0h0p0" fullword ascii /* Goodware String - occured 3 times */ $s8 = "tV9_ $s10 = "1-1:1I1T1Z1p1w1" fullword ascii $s11 = "8-999E9U9k9" fullword ascii $s12 = "8\"8)8H8i8t8" fullword ascii $s13 = "8\"868@8M8W8" fullword ascii $s14 = "3\"3)3>3F3f3m3t3}3" fullword ascii $s15 = "3\"3(3<3]3o3" fullword ascii $s16 = "9 9*909B9" fullword ascii $s17 = "9.979S9]9a9w9" fullword ascii $s18 = "txf9(tsf9)tnj\\P" fullword ascii $s19 = "5!5'5-5J5Y5b5i5~5" fullword ascii $s20 = "<2=7=>=E={=" fullword ascii condition: uint16(0) == 0x5a4d and filesize < 200KB and ( pe.imphash() == "68b5e41a24d5a26c1c2196733789c238" or 8 of them ) } |
This Knowledge Base article discusses a specific threat that's being tracked. The list of IOCs will change over time; check MVISION Insights for the latest IOCs.
Minimum Content Versions
Detection Summary
Minimum set of Manual Rules to improve protection to block this campaign:
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
Endpoint Security - Advanced Threat Protection:
Rule ID: 4 Use GTI file reputation to identify trusted or malicious files
Host Intrusion Prevention:
Rule ID: 6070 Hidden PowerShell Detected
Rule ID: 6081 PowerShell Command Restriction - NoProfile
Rule ID: 6083 PowerShell Command Restriction - NonInteractive
Rule ID: 6113 T1055 - Fileless Threat: Reflective Self Injection
Rule ID: 6081 PowerShell Command Restriction - NoProfile
Rule ID: 6083 PowerShell Command Restriction - NonInteractive
Rule ID: 6113 T1055 - Fileless Threat: Reflective Self Injection
Aggressive set of Manual Rules to improve protection to block this campaign:
IMPORTANT: Always follow best practices when you enable new rules and signatures.
When you implement new rules or signatures, always set them to Report mode first and check the alerts generated. Resolve any issues that arise and then set the rules to Block. This step mitigates against triggering false positives and allows you to refine your configuration.
For more information, see KB87843 - List of and best practices for Endpoint Security Dynamic Application Containment rules.
VirusScan Enterprise - Access Protection Rules:
Prevent creation of new executable files in the Windows folder
Host Intrusion Prevention:
Rule ID: 6010 Generic Application Hooking Protection
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 6011 Generic Application Invocation Protection
Rule ID: 1148 CMD Tool Access by a Network Aware Application
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 6011 Generic Application Invocation Protection
Rule ID: 1148 CMD Tool Access by a Network Aware Application
