Analysis

  • max time kernel
    151s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 20:06

General

  • Target

    35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5.exe

  • Size

    1.3MB

  • MD5

    cbbfd5e8b4de64c80f616d8b819f8c2d

  • SHA1

    7e336562657b9a62a0dea9ee462a6e320a4cc332

  • SHA256

    35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

  • SHA512

    2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

  • SSDEEP

    24576:3fmMv6Ckr7Mny5Qs3d387ZNw8IjKDGVyF01vbXngUzFhU/6qu3Y:33v+7/5QsNaZNw8I0GVyiH5S/K3Y

Malware Config

Extracted

Family

darkcomet

Botnet

ezzzzz

C2

caydennary.ddns.net:1604

Mutex

DC_MUTEX-J9VPS6G

Attributes
  • InstallPath

    MSDCSC\driversu.exe

  • gencode

    zzlyPkLqPYa8

  • install

    true

  • offline_keylogger

    true

  • password

    yn2bkuc1

  • persistence

    true

  • reg_key

    DriverSu

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • AutoIT Executable 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5.exe
    "C:\Users\Admin\AppData\Local\Temp\35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds policy Run key to start application
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1712
    • C:\Users\Admin\AppData\Local\Temp\35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5.exe
      "C:\Users\Admin\AppData\Local\Temp\35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1352
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        PID:2036
      • C:\Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe
        "C:\Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Adds policy Run key to start application
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:912
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe
          "C:\Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:576
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
              PID:1708

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

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

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

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

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

    • C:\Users\Admin\AppData\Roaming\Microsoft\facecall.exe

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

    • \Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

    • \Users\Admin\AppData\Local\Temp\MSDCSC\driversu.exe

      Filesize

      1.3MB

      MD5

      cbbfd5e8b4de64c80f616d8b819f8c2d

      SHA1

      7e336562657b9a62a0dea9ee462a6e320a4cc332

      SHA256

      35a034918c2191bd29352c318defdd6b07ff43c9efb4e689a3dc973a32d78dd5

      SHA512

      2b80bc53c53b6cf331b0cd5e8bc24833dd45128fb4797c7ec96b741dde28c7e448169eb8b0af36c10f505d01fcecfcb15facfbc714fb54f5082954030f5af5af

    • memory/576-106-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/576-105-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/576-97-0x000000000048F888-mapping.dmp

    • memory/576-96-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/912-76-0x0000000000000000-mapping.dmp

    • memory/1352-64-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-65-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-72-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-70-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-69-0x0000000000000000-mapping.dmp

    • memory/1352-67-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-80-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-55-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-56-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-62-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-60-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1352-58-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/1708-103-0x0000000000000000-mapping.dmp

    • memory/1712-54-0x0000000075071000-0x0000000075073000-memory.dmp

      Filesize

      8KB

    • memory/2036-73-0x0000000000000000-mapping.dmp