Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-04-2024 09:33

General

  • Target

    6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe

  • Size

    478KB

  • MD5

    6e6fcb3ebbb49e38d9fc25d1c52e59bc

  • SHA1

    2e2a90129b418dc05d29cd3ddb32cd49941fc316

  • SHA256

    afe3bfc6332c25de3e042c7101f1fb3063720884a8921c0e754212cca4c1cf86

  • SHA512

    4d785edfd06a1d6b294bdaeeda00ba2be24fbc4b4f16681b044a5314f919f622facf7eabfbbc91983a35a60601bf889786187afc33022f49c20e7c2dae23167e

  • SSDEEP

    12288:ok5NWNPvHfEuJqF87cqNv2iNI65WJ2GaoCe8phFUr:vcXHAFkPNv2K

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/897216012603256842/Zf1W7RTuEyIvXw2r12OgP8sa8I5_odqhiTlFF6XnWhig090X7dOOZ6hDa2OY4AoeRrjc

Signatures

  • Mercurial Grabber Stealer

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

  • 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Users\Admin\AppData\Local\Temp\6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe
      "6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe"
      2⤵
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      PID:1900
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 2632
        3⤵
        • Program crash
        PID:4324
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1900 -ip 1900
    1⤵
      PID:392

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\6e6fcb3ebbb49e38d9fc25d1c52e59bc_JaffaCakes118.exe.log

      Filesize

      425B

      MD5

      4eaca4566b22b01cd3bc115b9b0b2196

      SHA1

      e743e0792c19f71740416e7b3c061d9f1336bf94

      SHA256

      34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

      SHA512

      bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

    • memory/1900-7-0x0000000000400000-0x0000000000410000-memory.dmp

      Filesize

      64KB

    • memory/1900-19-0x0000000075110000-0x00000000758C0000-memory.dmp

      Filesize

      7.7MB

    • memory/1900-15-0x0000000006D40000-0x0000000006DA6000-memory.dmp

      Filesize

      408KB

    • memory/1900-12-0x00000000055B0000-0x00000000055C0000-memory.dmp

      Filesize

      64KB

    • memory/1900-11-0x0000000075110000-0x00000000758C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3068-6-0x0000000007890000-0x00000000078A8000-memory.dmp

      Filesize

      96KB

    • memory/3068-0-0x0000000000930000-0x00000000009B2000-memory.dmp

      Filesize

      520KB

    • memory/3068-5-0x0000000002CF0000-0x0000000002CF6000-memory.dmp

      Filesize

      24KB

    • memory/3068-10-0x0000000075110000-0x00000000758C0000-memory.dmp

      Filesize

      7.7MB

    • memory/3068-4-0x00000000052B0000-0x000000000533C000-memory.dmp

      Filesize

      560KB

    • memory/3068-3-0x0000000002D00000-0x0000000002D10000-memory.dmp

      Filesize

      64KB

    • memory/3068-2-0x0000000002CD0000-0x0000000002CD6000-memory.dmp

      Filesize

      24KB

    • memory/3068-1-0x0000000075110000-0x00000000758C0000-memory.dmp

      Filesize

      7.7MB