Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/08/2024, 07:23

General

  • Target

    bad3375c1afb85e12eaa4f872e640c58_JaffaCakes118.exe

  • Size

    758KB

  • MD5

    bad3375c1afb85e12eaa4f872e640c58

  • SHA1

    d279596e7fbc990d2ee51649aa2e4f79bcd51bf1

  • SHA256

    828bf06da890c926bcfec850972e98ef358b5def95ca47da2c0ab931a6202aab

  • SHA512

    ff7c03887def0abf56aca3a814020e8a699fef48b02e5844a1ec7d2c63db847578cf2017cb86f4a5aa19c75e76710f1d0c850c6ffe26b715f90116d463720631

  • SSDEEP

    12288:I3GnbxJJobfq8zKx2p3c9n9X4Lj/Ajiam4KLPzdRnSR5MmB:I21roDz26c9n9oHDC

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 43 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bad3375c1afb85e12eaa4f872e640c58_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\bad3375c1afb85e12eaa4f872e640c58_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3900
    • C:\Users\Admin\AppData\Local\Temp\bad3375c1afb85e12eaa4f872e640c58_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4908
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2528
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:544
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:3236
      • C:\Users\Admin\AppData\Roaming\iexplorer.exe
        "C:\Users\Admin\AppData\Roaming\iexplorer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4456
        • C:\Users\Admin\AppData\Roaming\iexplorer.exe
          4⤵
          • Modifies firewall policy service
          • Windows security bypass
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:4120

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

          Filesize

          50B

          MD5

          b774ae3fb1da087e1f83b4f7b2060e5a

          SHA1

          97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

          SHA256

          adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

          SHA512

          f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

        • C:\Users\Admin\AppData\Roaming\iexplorer.exe

          Filesize

          758KB

          MD5

          bad3375c1afb85e12eaa4f872e640c58

          SHA1

          d279596e7fbc990d2ee51649aa2e4f79bcd51bf1

          SHA256

          828bf06da890c926bcfec850972e98ef358b5def95ca47da2c0ab931a6202aab

          SHA512

          ff7c03887def0abf56aca3a814020e8a699fef48b02e5844a1ec7d2c63db847578cf2017cb86f4a5aa19c75e76710f1d0c850c6ffe26b715f90116d463720631

        • memory/1924-2-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/1924-3-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/1924-4-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/1924-5-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/1924-6-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/1924-25-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-37-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-46-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-41-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-40-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-39-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-38-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-35-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-42-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-43-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-44-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-45-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-36-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-47-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-48-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-49-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-50-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-51-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-52-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-53-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-54-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-55-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB

        • memory/4120-56-0x0000000000400000-0x00000000004C7000-memory.dmp

          Filesize

          796KB