Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-10-2024 23:45

General

  • Target

    7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe

  • Size

    717KB

  • MD5

    7d28b6a3977fb89528359197ab7a7e6d

  • SHA1

    092a58676dec908e7960e3504cf7f5adb873b45b

  • SHA256

    52062426a82e77857f1c0785c412d5b2453a0cb0a7cfc1c0f33748762d469aa6

  • SHA512

    4b866fb01308e810ef9aa04d7c3131ac9c25946a387f4b7744582a27003312eb4fa5828028a0d45759ef2509f1c9d2a4c14affca6bf2dad29e1021e0a0bcd70b

  • SSDEEP

    12288:29zEGJrT9YN4VAbPZWeOF8RHVJiN5+Aho0nLX/XH249uS:Z2TadBWPC7+IAho0nLXeAuS

Malware Config

Extracted

Family

darkcomet

Botnet

Guest10

C2

smth1.zapto.org:1604

Mutex

DC_MUTEX-2CV8R3D

Attributes
  • InstallPath

    MSDCSC\msdcss.exe

  • gencode

    iUkSoqq15Y7a

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Drops file in Drivers directory 1 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
  • 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).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Drops file in Drivers directory
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1516
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4712
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\7d28b6a3977fb89528359197ab7a7e6d_JaffaCakes118.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:4828
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2336
        • 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:2832
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1008
      • C:\Users\Admin\Documents\MSDCSC\msdcss.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcss.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4760
        • C:\Users\Admin\Documents\MSDCSC\msdcss.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcss.exe"
          4⤵
          • Modifies firewall policy service
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3052
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3448
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 200
              6⤵
              • Program crash
              PID:780
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3448 -ip 3448
    1⤵
      PID:4768

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\Documents\MSDCSC\msdcss.exe

      Filesize

      717KB

      MD5

      7d28b6a3977fb89528359197ab7a7e6d

      SHA1

      092a58676dec908e7960e3504cf7f5adb873b45b

      SHA256

      52062426a82e77857f1c0785c412d5b2453a0cb0a7cfc1c0f33748762d469aa6

      SHA512

      4b866fb01308e810ef9aa04d7c3131ac9c25946a387f4b7744582a27003312eb4fa5828028a0d45759ef2509f1c9d2a4c14affca6bf2dad29e1021e0a0bcd70b

    • memory/1008-12-0x00000000005D0000-0x00000000005D1000-memory.dmp

      Filesize

      4KB

    • memory/1516-46-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1516-3-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1516-4-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1516-5-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1516-6-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1516-7-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2068-56-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/2068-0-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/3052-61-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-65-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-54-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-51-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-53-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-60-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-58-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-62-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-71-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-69-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-59-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-63-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-64-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-70-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-66-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-67-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-68-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3052-50-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3448-52-0x0000000000560000-0x0000000000561000-memory.dmp

      Filesize

      4KB

    • memory/4760-57-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB