Analysis

  • max time kernel
    142s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 22:36

General

  • Target
    36e736330cf2d5ab422fd37c6d9fa789_JaffaCakes118.exe
  • Size 10.0MB
  • Sample240511-2jd4dacc7t
  • SHA256 13c061394ac647cce694961d45cfa972f7cbe44a26135416f8b08eec67d8d6c9
  • 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 4 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • xmrig

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

  • XMRig Miner payload 19 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.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\36e736330cf2d5ab422fd37c6d9fa789_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\36e736330cf2d5ab422fd37c6d9fa789_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:2020
    • C:\Windows\svchost.exe
      "C:\Windows\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4208

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 12.1MB
        • SHA256 d448df24be6e9ba9ffe6119fb63618604b656d33b0a3923ff4ddd618e416de04
        • 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 3bb652140bf407559c11ee8be14ff440fa030b08c2a705f5aa0c9e2eb15a94f2
        • MD5 SHA1 SHA512 SSDEEP

        memory/2020-530-0x0000000000400000-0x0000000000619000-memory.dmp

        memory/2020-0-0x0000000000400000-0x0000000000619000-memory.dmp

        memory/2020-393-0x0000000000400000-0x0000000000619000-memory.dmp

        memory/4208-392-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-529-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-416-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-426-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-427-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-460-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-395-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-397-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-356-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-531-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-532-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-533-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-534-0x0000000000400000-0x00000000004DA000-memory.dmp

        memory/4208-535-0x0000000000400000-0x00000000004DA000-memory.dmp