General

  • Target

    final.slim.exe

  • Size

    5.3MB

  • Sample

    250330-gj18patlz5

  • MD5

    81ec3629d40d7edec8772f4d359fa74c

  • SHA1

    9714c5e0feb98bb8ee1e6e52d51460c4f2dcbe9c

  • SHA256

    23f6a4e7ce6a59f009b688268b6a283323aa10bdc6955d3047c2247a61bc8099

  • SHA512

    5ab1af8a5a51337a6c06210b26312cc15d9b7d634c5e87b56eafca2dec244da0125f079aefd6219bc02e47e61ac4e9d2f1a2c5af5c729b4b35fe6b44e3ea9513

  • SSDEEP

    98304:Srl5kwHbL1vT6x5R14vx+Gjwfg14TBwOJdyajNn077PWJ2Tdta0C7lgODAKN1/:2vDHob4Z+I1KBw7ajh077Puidt5ChhHN

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1355000776564408502/zyBtzE7LqhbAqIMRcyDp8-pDUTsrz8lOF2RcxpV-REOA3whI-DvfZqYez-17cEoo0s_N

Targets

    • Target

      final.slim.exe

    • Size

      5.3MB

    • MD5

      81ec3629d40d7edec8772f4d359fa74c

    • SHA1

      9714c5e0feb98bb8ee1e6e52d51460c4f2dcbe9c

    • SHA256

      23f6a4e7ce6a59f009b688268b6a283323aa10bdc6955d3047c2247a61bc8099

    • SHA512

      5ab1af8a5a51337a6c06210b26312cc15d9b7d634c5e87b56eafca2dec244da0125f079aefd6219bc02e47e61ac4e9d2f1a2c5af5c729b4b35fe6b44e3ea9513

    • SSDEEP

      98304:Srl5kwHbL1vT6x5R14vx+Gjwfg14TBwOJdyajNn077PWJ2Tdta0C7lgODAKN1/:2vDHob4Z+I1KBw7ajh077Puidt5ChhHN

    • Mercurial Grabber Stealer

      Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

    • Mercurialgrabber family

    • Modifies security service

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Looks for VirtualBox Guest Additions in registry

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Creates new service(s)

    • Looks for VMWare Tools registry key

    • Sets service image path in registry

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Indicator Removal: Clear Windows Event Logs

      Clear Windows Event Logs to hide the activity of an intrusion.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks