Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/02/2025, 21:30

General

  • Target

    JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe

  • Size

    780KB

  • MD5

    2fa2de66b1ca550b11513f0cb325e8e0

  • SHA1

    8ecbfa853696eb382744d311cd353a6bf2d2f483

  • SHA256

    9f80f443cc464de6d17678e94e25cede1218568b75a2e89a0278b766fb07f37a

  • SHA512

    86391843d66dd56d35b2eee5e43e02bdc0162d23c61e79b344888cfa41c1ffb8a62f00ff04ec7e59a3eb4c380c1b3d8cda1838b12dda9abe955558bb658bbaa7

  • SSDEEP

    12288:rxa6q6jnieErDHrlWUQ6AkGtTRj9SIu78iBoE7UYVlda:rxrxie67BWeAkqyn83LYVlda

Malware Config

Extracted

Family

darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

rc4.plain

Extracted

Family

darkcomet

Botnet

Guest16

C2

192.168.1.2:1604

Mutex

DC_MUTEX-8F7010S

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    a5S5MyDcHw4d

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    System32dll

rc4.plain

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe
      C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1872
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2fa2de66b1ca550b11513f0cb325e8e0.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2236
      • 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:2700
        • 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:2664
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2708
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2444
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2924
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
            5⤵
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            PID:2044
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2044 -s 48
              6⤵
              • Program crash
              PID:2504

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    780KB

    MD5

    2fa2de66b1ca550b11513f0cb325e8e0

    SHA1

    8ecbfa853696eb382744d311cd353a6bf2d2f483

    SHA256

    9f80f443cc464de6d17678e94e25cede1218568b75a2e89a0278b766fb07f37a

    SHA512

    86391843d66dd56d35b2eee5e43e02bdc0162d23c61e79b344888cfa41c1ffb8a62f00ff04ec7e59a3eb4c380c1b3d8cda1838b12dda9abe955558bb658bbaa7

  • memory/1808-0-0x0000000000020000-0x0000000000024000-memory.dmp

    Filesize

    16KB

  • memory/1872-9-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-15-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-20-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-21-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1872-11-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-5-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-19-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-22-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-7-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-23-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-13-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-3-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-60-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/1872-1-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/2708-26-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2708-49-0x00000000002A0000-0x00000000002A1000-memory.dmp

    Filesize

    4KB