Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 00:43

General

  • Target
    617d70d252369ecf2a258c62f52fc094_JaffaCakes118.exe
  • Size 6.7MB
  • Sample240521-a3bc2sda5v
  • SHA256 171130eaa34c91cb23e8ca87bff1b20149a0502483e3e9f9e63330a5a6370bd6
  • 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\617d70d252369ecf2a258c62f52fc094_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\617d70d252369ecf2a258c62f52fc094_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:228
    • C:\Windows\svchost.exe
      "C:\Windows\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4292

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 8.8MB
        • SHA256 74c4e21c9bc2440327d02cc23cd1e43ad74696f2837e5f7d49fb791f95f9e799
        • 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 c37e5f135fe8a124f4d173aa410e6b9ead53916fd09cf3194e82118a646650f1
        • MD5 SHA1 SHA512 SSDEEP

        memory/228-0-0x0000000000400000-0x0000000000613000-memory.dmp

        memory/4292-416-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-533-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-415-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-394-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-426-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-461-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-392-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-396-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-534-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-535-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-536-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-537-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-538-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4292-539-0x0000000000400000-0x00000000004DA000-memory.dmp