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Analysis

  • max time kernel
    149s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/01/2025, 20:50

General

  • Target

    JaffaCakes118_682da2ccae76111c09259cd266455b80.exe

  • Size

    923KB

  • MD5

    682da2ccae76111c09259cd266455b80

  • SHA1

    e38abd3d0c8c9a35f96530394665fc5b430608fe

  • SHA256

    1645887545149105df230d360c1d505a197025e5dff6cb231dcc4415f5a966e2

  • SHA512

    ea916addaa81b685e410e75b52f3b1ad1883c2263cd272ba2ceb6d0a5b032fe8f23cfee15a22f501a0f61af4dc2b6315212fbc52e5a464dab2c7e6635f524d6c

  • SSDEEP

    12288:6t62RB8MItKik4O8LsgGTXduAqnr0oObvIxHtpdvm+cpim9mMvOUO1Yx1KBkAm/Y:nJMjNL8LXbyj2ZNc0fiO5YxBAGxc

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-DVZCVWJ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    z1Hiq9E1g4Nq

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • 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
  • 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 1 IoCs
  • Drops file in System32 directory 4 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 9 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 behavior: GetForegroundWindowSpam 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\JaffaCakes118_682da2ccae76111c09259cd266455b80.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_682da2ccae76111c09259cd266455b80.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4260
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_682da2ccae76111c09259cd266455b80.ExE
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_682da2ccae76111c09259cd266455b80.ExE"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1388
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_682da2ccae76111c09259cd266455b80.ExE" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3624
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_682da2ccae76111c09259cd266455b80.ExE" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2292
      • 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:2944
        • 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:1400
      • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
        "C:\Windows\system32\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2756
        • C:\Windows\SysWOW64\MSDCSC\msdcsc.ExE
          "C:\Windows\SysWOW64\MSDCSC\msdcsc.ExE"
          4⤵
          • Modifies firewall policy service
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4452
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:3080

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

    Filesize

    923KB

    MD5

    682da2ccae76111c09259cd266455b80

    SHA1

    e38abd3d0c8c9a35f96530394665fc5b430608fe

    SHA256

    1645887545149105df230d360c1d505a197025e5dff6cb231dcc4415f5a966e2

    SHA512

    ea916addaa81b685e410e75b52f3b1ad1883c2263cd272ba2ceb6d0a5b032fe8f23cfee15a22f501a0f61af4dc2b6315212fbc52e5a464dab2c7e6635f524d6c

  • memory/1388-73-0x0000000000400000-0x00000000004E5000-memory.dmp

    Filesize

    916KB

  • memory/1388-74-0x0000000000400000-0x00000000004E5000-memory.dmp

    Filesize

    916KB

  • memory/1388-205-0x0000000000400000-0x00000000004E5000-memory.dmp

    Filesize

    916KB

  • memory/2756-210-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/4260-31-0x0000000002BB0000-0x0000000002BC0000-memory.dmp

    Filesize

    64KB

  • memory/4260-35-0x0000000002BF0000-0x0000000002C00000-memory.dmp

    Filesize

    64KB

  • memory/4260-1-0x0000000002160000-0x0000000002170000-memory.dmp

    Filesize

    64KB

  • memory/4260-9-0x00000000021E0000-0x00000000021F0000-memory.dmp

    Filesize

    64KB

  • memory/4260-32-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

    Filesize

    64KB

  • memory/4260-7-0x00000000021C0000-0x00000000021D0000-memory.dmp

    Filesize

    64KB

  • memory/4260-6-0x00000000021B0000-0x00000000021C0000-memory.dmp

    Filesize

    64KB

  • memory/4260-5-0x00000000021A0000-0x00000000021B0000-memory.dmp

    Filesize

    64KB

  • memory/4260-4-0x0000000002190000-0x00000000021A0000-memory.dmp

    Filesize

    64KB

  • memory/4260-3-0x0000000002180000-0x0000000002190000-memory.dmp

    Filesize

    64KB

  • memory/4260-11-0x0000000002210000-0x0000000002220000-memory.dmp

    Filesize

    64KB

  • memory/4260-19-0x0000000002AF0000-0x0000000002B00000-memory.dmp

    Filesize

    64KB

  • memory/4260-18-0x0000000002AE0000-0x0000000002AF0000-memory.dmp

    Filesize

    64KB

  • memory/4260-17-0x0000000002380000-0x0000000002390000-memory.dmp

    Filesize

    64KB

  • memory/4260-16-0x0000000002370000-0x0000000002380000-memory.dmp

    Filesize

    64KB

  • memory/4260-20-0x0000000002B00000-0x0000000002B10000-memory.dmp

    Filesize

    64KB

  • memory/4260-15-0x0000000002360000-0x0000000002370000-memory.dmp

    Filesize

    64KB

  • memory/4260-14-0x0000000002350000-0x0000000002360000-memory.dmp

    Filesize

    64KB

  • memory/4260-13-0x0000000002340000-0x0000000002350000-memory.dmp

    Filesize

    64KB

  • memory/4260-12-0x0000000002220000-0x0000000002230000-memory.dmp

    Filesize

    64KB

  • memory/4260-10-0x0000000002200000-0x0000000002210000-memory.dmp

    Filesize

    64KB

  • memory/4260-21-0x0000000002B10000-0x0000000002B20000-memory.dmp

    Filesize

    64KB

  • memory/4260-22-0x0000000002B20000-0x0000000002B30000-memory.dmp

    Filesize

    64KB

  • memory/4260-23-0x0000000002B30000-0x0000000002B40000-memory.dmp

    Filesize

    64KB

  • memory/4260-25-0x0000000002B50000-0x0000000002B60000-memory.dmp

    Filesize

    64KB

  • memory/4260-24-0x0000000002B40000-0x0000000002B50000-memory.dmp

    Filesize

    64KB

  • memory/4260-27-0x0000000002B70000-0x0000000002B80000-memory.dmp

    Filesize

    64KB

  • memory/4260-26-0x0000000002B60000-0x0000000002B70000-memory.dmp

    Filesize

    64KB

  • memory/4260-28-0x0000000002B80000-0x0000000002B90000-memory.dmp

    Filesize

    64KB

  • memory/4260-29-0x0000000002B90000-0x0000000002BA0000-memory.dmp

    Filesize

    64KB

  • memory/4260-30-0x0000000002BA0000-0x0000000002BB0000-memory.dmp

    Filesize

    64KB

  • memory/4260-0-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/4260-8-0x00000000021D0000-0x00000000021E0000-memory.dmp

    Filesize

    64KB

  • memory/4260-2-0x0000000002170000-0x0000000002180000-memory.dmp

    Filesize

    64KB

  • memory/4260-57-0x0000000002D60000-0x0000000002D70000-memory.dmp

    Filesize

    64KB

  • memory/4260-33-0x0000000002BD0000-0x0000000002BE0000-memory.dmp

    Filesize

    64KB

  • memory/4260-36-0x0000000002C00000-0x0000000002C10000-memory.dmp

    Filesize

    64KB

  • memory/4260-37-0x0000000002C10000-0x0000000002C20000-memory.dmp

    Filesize

    64KB

  • memory/4260-38-0x0000000002C20000-0x0000000002C30000-memory.dmp

    Filesize

    64KB

  • memory/4260-39-0x0000000002C30000-0x0000000002C40000-memory.dmp

    Filesize

    64KB

  • memory/4260-40-0x0000000002C40000-0x0000000002C50000-memory.dmp

    Filesize

    64KB

  • memory/4260-41-0x0000000002C50000-0x0000000002C60000-memory.dmp

    Filesize

    64KB

  • memory/4260-42-0x0000000002C60000-0x0000000002C70000-memory.dmp

    Filesize

    64KB

  • memory/4260-43-0x0000000002C80000-0x0000000002C90000-memory.dmp

    Filesize

    64KB

  • memory/4260-44-0x0000000002C90000-0x0000000002CA0000-memory.dmp

    Filesize

    64KB

  • memory/4260-45-0x0000000002CA0000-0x0000000002CB0000-memory.dmp

    Filesize

    64KB

  • memory/4260-46-0x0000000002CB0000-0x0000000002CC0000-memory.dmp

    Filesize

    64KB

  • memory/4260-47-0x0000000002CC0000-0x0000000002CD0000-memory.dmp

    Filesize

    64KB

  • memory/4260-48-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

    Filesize

    64KB

  • memory/4260-49-0x0000000002CE0000-0x0000000002CF0000-memory.dmp

    Filesize

    64KB

  • memory/4260-50-0x0000000002CF0000-0x0000000002D00000-memory.dmp

    Filesize

    64KB

  • memory/4260-51-0x0000000002D00000-0x0000000002D10000-memory.dmp

    Filesize

    64KB

  • memory/4260-52-0x0000000002D10000-0x0000000002D20000-memory.dmp

    Filesize

    64KB

  • memory/4260-53-0x0000000002D20000-0x0000000002D30000-memory.dmp

    Filesize

    64KB

  • memory/4260-54-0x0000000002D30000-0x0000000002D40000-memory.dmp

    Filesize

    64KB

  • memory/4260-55-0x0000000002D40000-0x0000000002D50000-memory.dmp

    Filesize

    64KB

  • memory/4260-56-0x0000000002D50000-0x0000000002D60000-memory.dmp

    Filesize

    64KB

  • memory/4260-34-0x0000000002BE0000-0x0000000002BF0000-memory.dmp

    Filesize

    64KB

  • memory/4260-58-0x0000000002D70000-0x0000000002D80000-memory.dmp

    Filesize

    64KB

  • memory/4260-59-0x0000000002D80000-0x0000000002D90000-memory.dmp

    Filesize

    64KB

  • memory/4260-60-0x0000000002D90000-0x0000000002DA0000-memory.dmp

    Filesize

    64KB

  • memory/4260-61-0x0000000002DA0000-0x0000000002DB0000-memory.dmp

    Filesize

    64KB

  • memory/4260-62-0x0000000002DB0000-0x0000000002DC0000-memory.dmp

    Filesize

    64KB

  • memory/4260-63-0x0000000002DC0000-0x0000000002DD0000-memory.dmp

    Filesize

    64KB

  • memory/4260-64-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

    Filesize

    64KB

  • memory/4260-72-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/4452-211-0x0000000000400000-0x00000000004E5000-memory.dmp

    Filesize

    916KB

  • memory/4452-217-0x0000000000400000-0x00000000004E5000-memory.dmp

    Filesize

    916KB