Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    26-06-2024 20:59

General

  • Target

    136e24d2e40c6bb49efec2c643f2dbe4_JaffaCakes118.exe

  • Size

    398KB

  • MD5

    136e24d2e40c6bb49efec2c643f2dbe4

  • SHA1

    0eb613aee9bd84a91045b01df6e80639b3072497

  • SHA256

    d14dc0c863a908b364ddb07dce87c1936d7d6f50f341f1ba72c83342bcdc5a66

  • SHA512

    9bcda7a8a883d2aad638ba6e27e315dea9ad3d69659473a8610169179c06635b04d71c3c950257c951e222280ecdd3e66548906f2aa22bf9f30d31187bf95c20

  • SSDEEP

    12288:r0eFWYP1stdJTFoKTV45jEJnp2/FB02fHdf:r0evStdEKTV45ss/L9f

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

127.0.0.1:1604

Mutex

DC_MUTEX-TDUES14

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    kLFnMeH6GMti

  • install

    true

  • offline_keylogger

    true

  • password

    0123456789

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

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

    Modifies file attributes to stop it showing in Explorer etc.

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

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\136e24d2e40c6bb49efec2c643f2dbe4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\136e24d2e40c6bb49efec2c643f2dbe4_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1732
    • C:\Users\Admin\AppData\Local\Temp\136e24d2e40c6bb49efec2c643f2dbe4_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\136e24d2e40c6bb49efec2c643f2dbe4_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2200
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2024
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • Views/modifies file attributes
          PID:2676
      • C:\Windows\MSDCSC\msdcsc.exe
        "C:\Windows\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Windows\MSDCSC\msdcsc.exe
          C:\Windows\MSDCSC\msdcsc.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3004
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
              PID:2796

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Persistence

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Privilege Escalation

    Boot or Logon Autostart Execution

    2
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Winlogon Helper DLL

    1
    T1547.004

    Defense Evasion

    Modify Registry

    2
    T1112

    Hide Artifacts

    2
    T1564

    Hidden Files and Directories

    2
    T1564.001

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • \Windows\MSDCSC\msdcsc.exe
      Filesize

      398KB

      MD5

      136e24d2e40c6bb49efec2c643f2dbe4

      SHA1

      0eb613aee9bd84a91045b01df6e80639b3072497

      SHA256

      d14dc0c863a908b364ddb07dce87c1936d7d6f50f341f1ba72c83342bcdc5a66

      SHA512

      9bcda7a8a883d2aad638ba6e27e315dea9ad3d69659473a8610169179c06635b04d71c3c950257c951e222280ecdd3e66548906f2aa22bf9f30d31187bf95c20

    • memory/1732-0-0x0000000000400000-0x00000000006DBC10-memory.dmp
      Filesize

      2.9MB

    • memory/1732-5-0x0000000002D20000-0x0000000002FFC000-memory.dmp
      Filesize

      2.9MB

    • memory/1732-6-0x0000000000400000-0x00000000006DBC10-memory.dmp
      Filesize

      2.9MB

    • memory/2200-3-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2200-4-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2200-7-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2200-8-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2200-9-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2200-22-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/2796-33-0x0000000000080000-0x0000000000081000-memory.dmp
      Filesize

      4KB

    • memory/2796-71-0x0000000000270000-0x0000000000271000-memory.dmp
      Filesize

      4KB

    • memory/2996-30-0x0000000000400000-0x00000000006DBC10-memory.dmp
      Filesize

      2.9MB

    • memory/3004-75-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-76-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-32-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-73-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-72-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-74-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-31-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-29-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-77-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-78-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-80-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-81-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-82-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-83-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-85-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/3004-86-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB