Analysis

  • max time kernel
    154s
  • max time network
    163s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    31-07-2022 11:41

General

  • Target

    c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784.exe

  • Size

    659KB

  • MD5

    c98ab7ddf2809a9db363bce22d5468f9

  • SHA1

    f3d28dae38bba6b614a63504119f202f08308919

  • SHA256

    c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784

  • SHA512

    2b8ce86d4de1fe35b12195f42881737506f32cd4abad2be9688d3f5077427f7a477ef35677fe05bc85c70ba4b17faaaf8d6a717b52f26bc86a36d862220bf302

Malware Config

Extracted

Family

darkcomet

Botnet

ZQW

C2

http://aliq.no-ip.info:1604

http://aliq.no-ip.info:1605

http://aliq.no-ip.info:2147

http://aliq.no-ip.info:4569

aliq.no-ip.info:1604

aliq.no-ip.info:1605

aliq.no-ip.info:2147

aliq.no-ip.info:4569

http://aliq111.no-ip.info:1604

http://aliq111.no-ip.info:1605

http://aliq111.no-ip.info:2147

http://aliq111.no-ip.info:4569

http://aliq555.publicvm.com:1604

http://aliq555.publicvm.com:2147

http://aliq555.publicvm.com:1605

http://aliq555.publicvm.com:4569

aliq555.publicvm.com:1604

aliq555.publicvm.com:1605

aliq555.publicvm.com:2147

aliq555.publicvm.com:4569

Mutex

DC_MUTEX-BM2VJFH

Attributes
  • InstallPath

    C:\MSDCSC\ZQWZ.exe

  • gencode

    N7GilaH4YpEz

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    ZQWZ

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 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • 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 behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784.exe
    "C:\Users\Admin\AppData\Local\Temp\c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:640
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1924
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:1256
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:972
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:1292
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      PID:1440
    • C:\MSDCSC\ZQWZ.exe
      "C:\MSDCSC\ZQWZ.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1788
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1748
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:1724

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Winlogon Helper DLL

    1
    T1004

    Hidden Files and Directories

    2
    T1158

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Hidden Files and Directories

    2
    T1158

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MSDCSC\ZQWZ.exe
      Filesize

      659KB

      MD5

      c98ab7ddf2809a9db363bce22d5468f9

      SHA1

      f3d28dae38bba6b614a63504119f202f08308919

      SHA256

      c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784

      SHA512

      2b8ce86d4de1fe35b12195f42881737506f32cd4abad2be9688d3f5077427f7a477ef35677fe05bc85c70ba4b17faaaf8d6a717b52f26bc86a36d862220bf302

    • C:\MSDCSC\ZQWZ.exe
      Filesize

      659KB

      MD5

      c98ab7ddf2809a9db363bce22d5468f9

      SHA1

      f3d28dae38bba6b614a63504119f202f08308919

      SHA256

      c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784

      SHA512

      2b8ce86d4de1fe35b12195f42881737506f32cd4abad2be9688d3f5077427f7a477ef35677fe05bc85c70ba4b17faaaf8d6a717b52f26bc86a36d862220bf302

    • \MSDCSC\ZQWZ.exe
      Filesize

      659KB

      MD5

      c98ab7ddf2809a9db363bce22d5468f9

      SHA1

      f3d28dae38bba6b614a63504119f202f08308919

      SHA256

      c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784

      SHA512

      2b8ce86d4de1fe35b12195f42881737506f32cd4abad2be9688d3f5077427f7a477ef35677fe05bc85c70ba4b17faaaf8d6a717b52f26bc86a36d862220bf302

    • \MSDCSC\ZQWZ.exe
      Filesize

      659KB

      MD5

      c98ab7ddf2809a9db363bce22d5468f9

      SHA1

      f3d28dae38bba6b614a63504119f202f08308919

      SHA256

      c439c14021fc0aa06d37ea075b6629e4eedee4518a5960f73941bc82291cf784

      SHA512

      2b8ce86d4de1fe35b12195f42881737506f32cd4abad2be9688d3f5077427f7a477ef35677fe05bc85c70ba4b17faaaf8d6a717b52f26bc86a36d862220bf302

    • memory/640-54-0x0000000075CD1000-0x0000000075CD3000-memory.dmp
      Filesize

      8KB

    • memory/972-56-0x0000000000000000-mapping.dmp
    • memory/1256-59-0x0000000000000000-mapping.dmp
    • memory/1292-60-0x0000000000000000-mapping.dmp
    • memory/1440-57-0x0000000000000000-mapping.dmp
    • memory/1724-67-0x0000000000000000-mapping.dmp
    • memory/1788-63-0x0000000000000000-mapping.dmp
    • memory/1924-55-0x0000000000000000-mapping.dmp