Analysis

  • max time kernel
    107s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/05/2024, 00:01

General

  • Target
    2c58854b5c481e61fa75ba8fa40d08b6_JaffaCakes118.exe
  • Size 9.0MB
  • Sample240510-aa6cqaaa44
  • SHA256 807b4992925c7f407f5c3c967e0e5830d0ba519c103b8660f347962451f6d18a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Blackmoon, KrBanker

    Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.

  • Detect Blackmoon payload 2 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 17 IoCs
  • Sets file execution options in registry 2 TTPs 12 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2c58854b5c481e61fa75ba8fa40d08b6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\2c58854b5c481e61fa75ba8fa40d08b6_JaffaCakes118.exe"
    1⤵
    • UAC bypass
    • Sets file execution options in registry
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4524
    • C:\Windows\svchost.exe
      "C:\Windows\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2620

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        appvcleaner.exe

        • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe
        • Size 11.1MB
        • SHA256 6498cf8401c0ad111ccd795c89ccbd33bf3d406414ca777fbfb105b7ac486b32
        • MD5 SHA1 SHA512 SSDEEP

        config.json

        • Path C:\Windows\config.json
        • Size 1KB
        • SHA256 4756a234ed3d61fe187d9b6140792e54e7b757545edff82df594a507e528ed8e
        • MD5 SHA1 SHA512

        svchost.exe

        • Path C:\Windows\svchost.exe
        • Size 833KB
        • SHA256 08b55f9b7dafc53dfc43f7f70cdd7048d231767745b76dc4474370fb323d7ae7
        • MD5 SHA1 SHA512 SSDEEP

        vcredist2010_x86.log.html

        • Path C:\vcredist2010_x86.log.html
        • Size 81KB
        • SHA256 651a06c721b51ec0e01e8de990afdd73237b9707b9c0622d7f1660669931defc
        • MD5 SHA1 SHA512 SSDEEP

        memory/2620-398-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-304-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-394-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-396-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-532-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-417-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-418-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-427-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-428-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-461-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-392-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-529-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-530-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/2620-531-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4524-0-0x0000000000400000-0x0000000000613000-memory.dmp