MVISION Insights: Multi-staged JSOUTPROX RAT targets banks and finance companies
Technical Articles ID:
KB95207
Last Modified: 1/21/2022
Last Modified: 1/21/2022
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
Various campaigns against the financial sector in India using JSOutProx RAT have taken place since January 2021. Security company Quick Heal has found multiple payloads being dropped at different stages of its operations. Although the RAT campaigns have also been previously reported on other countries, those targeting Indian companies are operated through separate C2 domains. JSOutProx is a modular JScript-based RAT delivered to the user as a .hta file and first executed by the mshta.exe process. The initial attack vector is a spear-phishing email with a compressed attachment having a ".hta" file with a file name related to a financial transaction.
The McAfee Enterprise ATR Team gathers and analyzes information from multiple open and closed sources before disseminating intelligence reports.
This campaign was researched by Quick Heal and shared publicly here.
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.
This Knowledge Base article discusses a specific threat that is being tracked. The list of IOCs will change over time; check MVISION Insights for the latest IOCs.
Campaign IOC
| Type | Value |
| SHA256 | AC7AE2843BCD80256CDB23E061D82BE74B5C68CD1A8035AC4A63584E89E0040D |
| SHA256 | 615F4D91510D3DBB1C199BC2D953110C93531D7A5EA3F0925F3E06E3773C2D88 |
| SHA256 | 4A8104AC7432FEC3409E70B336511F5863209CCA9271D6E81396463AFA66A18C |
| SHA256 | 698CED4170469C3084AFBB0E21778477360D2AC10FB93B33EE3011870C7CA089 |
| SHA256 | 826FD121CC5A549B5010843C6B0A064782F15FC367A16482E98AF1C7358574F1 |
| SHA256 | AB160C6F6D5E1BE9BF7622A6F2F071A9BA1F7820FE77F7A2148CA198106B5254 |
| SHA256 | 77A1E666FCED63FC157A24C41F7A4A4DE23B520CB03799F264DAFF10AA5EA713 |
| SHA256 | 971586970C365016F8017275748A1D3740D6A38ADB1F52269CD223FB833F58F1 |
| SHA256 | 2EA9074AA7B6BDD9175C01028F02E5036BA8DC39A373CA7EEF367AA016008B3D |
| SHA256 | 67AAE99FB04275D1E4987E7989171361BC29A8745E72D6B4BF4EDBC8E16808DB |
| DOMAIN | marcelbosgath.zapto.org |
| DOMAIN | ruppamoda.zapto.org |
| DOMAIN | apatee40rm.gotdns.ch |
| DOMAIN | mathepqo.serveftp.com |
| DOMAIN | protogoo.ddnsking.com |
| DOMAIN | riyaipopa.ddns.net |
| DOMAIN | dirrcharlirastrup.gotdns.ch |
| DOMAIN | uloibdrupain.hopto.org |
| DOMAIN | gensamogh.myq-see.com |
| DOMAIN | cccicpatooluma.hopto.org |
| DOMAIN | feednet.myftp.biz |
Minimum Content Versions:
| Content Type | Version |
| V2 DAT (VirusScan Enterprise) | 10056 |
| V3 DAT (Endpoint Security) | 4508 |
Detection Summary
| IOC | Scanner | Detection |
| AC7AE2843BCD80256CDB23E061D82BE74B5C68CD1A8035AC4A63584E89E0040D | AVEngine V2 | JS/Agent.da |
| AVEngine V3 | JS/Agent.da | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 615F4D91510D3DBB1C199BC2D953110C93531D7A5EA3F0925F3E06E3773C2D88 | AVEngine V2 | JS/Agent.da |
| AVEngine V3 | JS/Agent.da | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 4A8104AC7432FEC3409E70B336511F5863209CCA9271D6E81396463AFA66A18C | AVEngine V2 | JS/Agent.ct |
| AVEngine V3 | JS/Agent.ct | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 698CED4170469C3084AFBB0E21778477360D2AC10FB93B33EE3011870C7CA089 | AVEngine V2 | JS/Downloader.gen.je |
| AVEngine V3 | JS/Downloader.gen.je | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 826FD121CC5A549B5010843C6B0A064782F15FC367A16482E98AF1C7358574F1 | AVEngine V2 | JS/Backdoor.i |
| AVEngine V3 | JS/Backdoor.i | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| AB160C6F6D5E1BE9BF7622A6F2F071A9BA1F7820FE77F7A2148CA198106B5254 | AVEngine V2 | Packed-GDT!98FDEE365893 |
| AVEngine V3 | Packed-GDT!98FDEE365893 | |
| JTI (ATP Rules) | JTI/Suspect.196612!98fdee365893 | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 77A1E666FCED63FC157A24C41F7A4A4DE23B520CB03799F264DAFF10AA5EA713 | AVEngine V2 | JS/Agent.cx |
| AVEngine V3 | JS/Agent.cx | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 971586970C365016F8017275748A1D3740D6A38ADB1F52269CD223FB833F58F1 | AVEngine V2 | JS/Backdoor.i |
| AVEngine V3 | JS/Backdoor.i | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 2EA9074AA7B6BDD9175C01028F02E5036BA8DC39A373CA7EEF367AA016008B3D | AVEngine V2 | JS/Agent.ct |
| AVEngine V3 | JS/Agent.ct | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
| IOC | Scanner | Detection |
| 67AAE99FB04275D1E4987E7989171361BC29A8745E72D6B4BF4EDBC8E16808DB | AVEngine V2 | JS/Downloader.gen.ru |
| AVEngine V3 | JS/Downloader.gen.ru | |
| JTI (ATP Rules) | - | |
| RP Static | - | |
| RP Dynamic | - |
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
Rule ID: 324 Prevent mshta from launching suspicious process
Rule ID: 324 Prevent mshta from launching suspicious process
Endpoint Security - Exploit Prevention:
Rule ID: 344 T1060 - New Startup Program Creation
Rule ID: 6086 Powershell Command Restriction - Command
Rule ID: 6086 Powershell Command Restriction - Command
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
Prevent programs registering to autorun
Prevent programs registering to autorun
Host Intrusion Prevention:
Rule ID: 6011 Generic Application Invocation Protection
Rule ID: 344 T1060 - New Startup Program Creation
Rule ID: 6010 Generic Application Hooking Protection
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 1148 CMD Tool Access by a Network Aware Application
Rule ID: 344 T1060 - New Startup Program Creation
Rule ID: 6010 Generic Application Hooking Protection
Rule ID: 1020 Windows Agent Shielding - File Access
Rule ID: 1148 CMD Tool Access by a Network Aware Application
Endpoint Security - Access Protection Rules:
Executing scripts by Windows script host (CScript.exe or Wscript.exe) from common user folders
Endpoint Security - Access Protection Custom Rules:
Rule: 1
Executables (Include):
mshta.exe
Subrules:
Subrule Type: Files
Operations:
execute
Targets (Include):
cmd.exe
Executables (Include):
mshta.exe
Subrules:
Subrule Type: Files
Operations:
execute
Targets (Include):
cmd.exe
VirusScan Enterprise - Access Protection Custom Rules:
Rule: 1
Rule Type: File
Process to include: mshta.exe
File or folder name to block: cmd.exe
File actions to prevent: Terminate
Rule Type: File
Process to include: mshta.exe
File or folder name to block: cmd.exe
File actions to prevent: Terminate
