Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/04/2024, 20:22

General

  • Target
    ee44c34541a3a4f987ce0765da845a0b_JaffaCakes118.exe
  • Size 750KB
  • Sample240411-y526jsfd91
  • SHA256 c3d218f3d1865a767a7baf0e212d72efbd9972a4ebb88e52a4788705bac7596b
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry class 46 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 11 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ee44c34541a3a4f987ce0765da845a0b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\ee44c34541a3a4f987ce0765da845a0b_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:3460
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\MARD.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\MARD.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:4312
        • C:\Users\Admin\AppData\Local\Temp\Xpadder.exe
          C:\Users\Admin\AppData\Local\Temp\Xpadder.exe
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of WriteProcessMemory
          PID:5024
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ipconfig /all
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3764
            • C:\Windows\SysWOW64\ipconfig.exe
              ipconfig /all
              6⤵
              • Gathers network information
              PID:2996
      • C:\Windows\SysWOW64\bpk.exe
        C:\Windows\system32\bpk.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Installs/modifies Browser Helper Object
        • Drops file in System32 directory
        • Modifies registry class
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:2852

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        MARD.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\MARD.exe
        • Size 697KB
        • SHA256 c8f08f5d73d606249d940e4cdc0f961f0e1d330698118e1bee2e50d6739ec323
        • MD5 SHA1 SHA512 SSDEEP

        bpk.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpk.exe
        • Size 428KB
        • SHA256 ae22fe0a782d27107cde7dd7fcdc74fdb4bb7b602093a3a7ea9b09906e42d837
        • MD5 SHA1 SHA512 SSDEEP

        bpkhk.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpkhk.dll
        • Size 24KB
        • SHA256 fc09f3ac69631457beafab2c685d40eb4e049d2daa715e83bf0f11264a990b3b
        • MD5 SHA1 SHA512 SSDEEP

        bpkwb.dll

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bpkwb.dll
        • Size 40KB
        • SHA256 bc1cab9bded0629ee28790c9da235aa8a47b417092932692b07f3530e9fe076a
        • MD5 SHA1 SHA512 SSDEEP

        inst.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\inst.dat
        • Size 996B
        • SHA256 294125444e4f4afd1bb177fcdfa78d9de0c80d93b3ef78d2fa03e3ad2b635c74
        • MD5 SHA1 SHA512

        mc.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mc.dat
        • Size 14B
        • SHA256 28a77ec010f69a13953482761f48f73146bed1aa5559b19b715941811da335d3
        • MD5 SHA1 SHA512

        pk.bin

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pk.bin
        • Size 4KB
        • SHA256 f25da810bfc0cbc5908cadb27f56b0dcdf3210e620287c881dfdb79d2b526af2
        • MD5 SHA1 SHA512 SSDEEP

        rinst.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
        • Size 7KB
        • SHA256 446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092
        • MD5 SHA1 SHA512 SSDEEP

        Xpadder.exe

        • Path C:\Users\Admin\AppData\Local\Temp\Xpadder.exe
        • Size 445KB
        • SHA256 dbe6411f35bafe5c70e6f0da5ac27e3d48837fda68c0bc0ffbfc22ecb96cf6ab
        • MD5 SHA1 SHA512 SSDEEP

        bpk.exe

        • Path C:\Windows\SysWOW64\bpk.exe
        • Size 428KB
        • SHA256 92ff08bfffa729b69d6e4e128ee2fa03a1c1f367b168213e907bd3f70d64cb61
        • MD5 SHA1 SHA512 SSDEEP

        bpkhk.dll

        • Path C:\Windows\SysWOW64\bpkhk.dll
        • Size 24KB
        • SHA256 6c48b4fe62614ad35aab89b534310024770fbcaa669d50a462f4973feeee926f
        • MD5 SHA1 SHA512 SSDEEP

        bpkwb.dll

        • Path C:\Windows\SysWOW64\bpkwb.dll
        • Size 40KB
        • SHA256 3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977
        • MD5 SHA1 SHA512 SSDEEP

        mc.dat

        • Path C:\Windows\SysWOW64\mc.dat
        • Size 14B
        • SHA256 d83341c9ce56898de022eec477f254f5480e15cd0ccb3a751c47c02e725b4489
        • MD5 SHA1 SHA512

        pk.bin

        • Path C:\Windows\SysWOW64\pk.bin
        • Size 4KB
        • SHA256 4a15b0ae8158dffdc3f5520c4ce585e9f467b4ed40860a8be83303803aba5043
        • MD5 SHA1 SHA512 SSDEEP

        memory/956-63-0x0000000000400000-0x0000000000412000-memory.dmp