Analysis

  • max time kernel
    150s
  • max time network
    51s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    30-11-2022 19:50

General

  • Target

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe

  • Size

    1.0MB

  • MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

  • SHA1

    d8449c14407703a7194089f567173e6827fd3f69

  • SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

  • SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • SSDEEP

    24576:QqtjXbJKN77OhLQ8Qxc8PrzeXb9qa39IS3wx9G9UG+v:XxX4N7YbpErzObH39Iau9G9UR

Malware Config

Extracted

Family

darkcomet

Botnet

YoDc

C2

robttt.zapto.org:912

Mutex

DC_MUTEX-BP5TXBD

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    3W7x0fxttgsw

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    rundll32

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 4 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 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe
    "C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe
      "C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:1948
      • C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe
        "C:\Users\Admin\AppData\Local\Temp\e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
          "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:1188
          • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
            "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1180
            • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
              "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:1108

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

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

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

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

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

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

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    Filesize

    1.0MB

    MD5

    daf490df6a5fcb1ac47bdc6d5f235f70

    SHA1

    d8449c14407703a7194089f567173e6827fd3f69

    SHA256

    e6d7ca18087a13b366c3a044bf54d642a0a46ff77dd19114db8bf7990c0bd24e

    SHA512

    18e100806fe229acee93e200e6c10fb6fb07ec9b8323a9e7753fca59eaf4e5f97b017a28c956339b98b3fe0ce25e10a2f962d5cdcbc05231e45983f184bb6fe5

  • memory/1108-124-0x000000000048F888-mapping.dmp
  • memory/1108-130-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1108-131-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1180-103-0x0000000000401110-mapping.dmp
  • memory/1180-127-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1188-89-0x0000000000000000-mapping.dmp
  • memory/1864-80-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-70-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-78-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-77-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-92-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-83-0x000000000048F888-mapping.dmp
  • memory/1864-82-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-84-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-86-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-74-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-72-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-68-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1864-67-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/1948-76-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-54-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-65-0x0000000075D71000-0x0000000075D73000-memory.dmp
    Filesize

    8KB

  • memory/1948-66-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-63-0x0000000000401110-mapping.dmp
  • memory/1948-62-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-60-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-55-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-59-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-58-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB

  • memory/1948-57-0x0000000000400000-0x00000000004AC000-memory.dmp
    Filesize

    688KB