Analysis

  • max time kernel
    155s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-10-2022 20:59

General

  • Target

    e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a.exe

  • Size

    636KB

  • MD5

    6aa8b96dc40d343ed01f71a98bc33dd0

  • SHA1

    f3054de583789ae77b90268b89b15842c81da48b

  • SHA256

    e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a

  • SHA512

    d248d8f1db0b34dcdee876e3a5e52e8585bfec4d49765458ea620b4276ed5a691deae5eb5007e37ce9979a919c3c8fc59de8fe617dcab6321719a6c8303e7934

  • SSDEEP

    12288:rClWWlTMKehR5IjmGRUqA6bARgoCfrgbisv69Wu:r3WlYKer2Wo0RgoCfriv+

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

microchip.myftp.org:80

microchip.myftp.org:5190

microchip.myftp.org:25

microchip.myftp.org:110

microchip.myftp.org:945

Mutex

DC_MUTEX-22M89DH

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    bNsEugEKgtYk

  • install

    true

  • offline_keylogger

    true

  • password

    pa$$w0rd117756

  • 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
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a.exe
    "C:\Users\Admin\AppData\Local\Temp\e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1900
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 308
      2⤵
      • Program crash
      PID:1124
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 344
      2⤵
      • Program crash
      PID:4988
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 356
      2⤵
      • Program crash
      PID:1812
    • C:\Users\Admin\AppData\Local\Temp\e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a.exe
      "C:\Users\Admin\AppData\Local\Temp\e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2844
      • C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
        "C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4692
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 324
          4⤵
          • Program crash
          PID:2964
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 328
          4⤵
          • Program crash
          PID:4340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 372
          4⤵
          • Program crash
          PID:2804
        • C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe
          "C:\Users\Admin\AppData\Roaming\MSDCSC\msdcsc.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1268
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
            5⤵
              PID:2272
            • C:\Windows\explorer.exe
              "C:\Windows\explorer.exe"
              5⤵
                PID:1608
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 408
              4⤵
              • Program crash
              PID:3892
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4692 -s 416
              4⤵
              • Program crash
              PID:4724
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 376
          2⤵
          • Program crash
          PID:4288
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1900 -s 344
          2⤵
          • Program crash
          PID:3360
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1900 -ip 1900
        1⤵
          PID:4268
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1900 -ip 1900
          1⤵
            PID:5012
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1900 -ip 1900
            1⤵
              PID:560
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1900 -ip 1900
              1⤵
                PID:4496
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 1900 -ip 1900
                1⤵
                  PID:236
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 4692 -ip 4692
                  1⤵
                    PID:3196
                  • C:\Windows\SysWOW64\WerFault.exe
                    C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4692 -ip 4692
                    1⤵
                      PID:4668
                    • C:\Windows\SysWOW64\WerFault.exe
                      C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 4692 -ip 4692
                      1⤵
                        PID:3936
                      • C:\Windows\SysWOW64\WerFault.exe
                        C:\Windows\SysWOW64\WerFault.exe -pss -s 636 -p 4692 -ip 4692
                        1⤵
                          PID:1208
                        • C:\Windows\SysWOW64\WerFault.exe
                          C:\Windows\SysWOW64\WerFault.exe -pss -s 656 -p 4692 -ip 4692
                          1⤵
                            PID:2276

                          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

                          Query Registry

                          1
                          T1012

                          System Information Discovery

                          2
                          T1082

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

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

                            636KB

                            MD5

                            6aa8b96dc40d343ed01f71a98bc33dd0

                            SHA1

                            f3054de583789ae77b90268b89b15842c81da48b

                            SHA256

                            e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a

                            SHA512

                            d248d8f1db0b34dcdee876e3a5e52e8585bfec4d49765458ea620b4276ed5a691deae5eb5007e37ce9979a919c3c8fc59de8fe617dcab6321719a6c8303e7934

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

                            636KB

                            MD5

                            6aa8b96dc40d343ed01f71a98bc33dd0

                            SHA1

                            f3054de583789ae77b90268b89b15842c81da48b

                            SHA256

                            e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a

                            SHA512

                            d248d8f1db0b34dcdee876e3a5e52e8585bfec4d49765458ea620b4276ed5a691deae5eb5007e37ce9979a919c3c8fc59de8fe617dcab6321719a6c8303e7934

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

                            636KB

                            MD5

                            6aa8b96dc40d343ed01f71a98bc33dd0

                            SHA1

                            f3054de583789ae77b90268b89b15842c81da48b

                            SHA256

                            e1988357bf7b368cd41004b28d836914b075f0f35d985c426397d343f0c1e78a

                            SHA512

                            d248d8f1db0b34dcdee876e3a5e52e8585bfec4d49765458ea620b4276ed5a691deae5eb5007e37ce9979a919c3c8fc59de8fe617dcab6321719a6c8303e7934

                          • memory/1268-164-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/1268-151-0x0000000000000000-mapping.dmp
                          • memory/1608-165-0x0000000000000000-mapping.dmp
                          • memory/1900-132-0x0000000000400000-0x000000000049F000-memory.dmp
                            Filesize

                            636KB

                          • memory/1900-146-0x0000000000400000-0x000000000049F000-memory.dmp
                            Filesize

                            636KB

                          • memory/2844-145-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-144-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-142-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-141-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-140-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-138-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-136-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-135-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-134-0x0000000000400000-0x00000000004B2000-memory.dmp
                            Filesize

                            712KB

                          • memory/2844-133-0x0000000000000000-mapping.dmp
                          • memory/4692-147-0x0000000000000000-mapping.dmp
                          • memory/4692-150-0x0000000000400000-0x000000000049F000-memory.dmp
                            Filesize

                            636KB

                          • memory/4692-166-0x0000000000400000-0x000000000049F000-memory.dmp
                            Filesize

                            636KB