Analysis

  • max time kernel
    92s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/03/2024, 05:52

General

  • Target
    b1604839b3dace254776abbfbc9502a3.exe
  • Size 328KB
  • Sample240304-gkwdtscd68
  • SHA256 57e2778ab304e430ef5d6dd3d61f0dc26517cb6f0ea50f8eef0205fe6d6f4704
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • mercurialgrabber

C2
  • https://discord.com/api/webhooks/868559352003457034/dTdMLqh4_IpORTEPiHVx21-wA3YbOpblaXGNdGfU4SRujvYBPDaL2uE4H_TU8o2uW1KU

Signatures

  • Mercurial Grabber Stealer

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

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b1604839b3dace254776abbfbc9502a3.exe
    "C:\Users\Admin\AppData\Local\Temp\b1604839b3dace254776abbfbc9502a3.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4408
    • C:\Users\Admin\AppData\Local\Temp\Image Logger.exe
      "C:\Users\Admin\AppData\Local\Temp\Image Logger.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Maps connected drives based on registry
      • Checks SCSI registry key(s)
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:4652

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        Image Logger.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Image Logger.exe
        • Size 41KB
        • SHA256 145ce805304271d9e11ba8c5aac53a92c2bd956cc5055f4e2edf028a4822b731
        • MD5 SHA1 SHA512 SSDEEP

        memory/4652-14-0x00000000000F0000-0x0000000000100000-memory.dmp

        memory/4652-15-0x00007FFAAE240000-0x00007FFAAED01000-memory.dmp

        memory/4652-16-0x000000001AE50000-0x000000001AE60000-memory.dmp

        memory/4652-20-0x00007FFAAE240000-0x00007FFAAED01000-memory.dmp