Analysis

  • max time kernel
    151s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    11/10/2022, 18:52

General

  • Target

    fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3.exe

  • Size

    1.5MB

  • MD5

    7589a096aa62e18e4f551f8aac5f30ce

  • SHA1

    eaced6976c02d9f33f4a4d783f16a9290b5a71e5

  • SHA256

    fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

  • SHA512

    0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

  • SSDEEP

    24576:dRmJkcoQricOIQxiZY1iag0a4oAboSB70PwvKNFZTVMrZiD4iVheq86F9/xP:SJZoQrbTFZY1iagIzborkKN73DjV7Z

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

minamobile1.zapto.org:1604

Mutex

DC_MUTEX-FVRPPG1

Attributes
  • InstallPath

    MSDCSC\explorer.exe

  • gencode

    2Ml2U2nN4HCu

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Microsoft Explorer Service

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 6 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Loads dropped DLL 9 IoCs
  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • AutoIT Executable 17 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 4 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 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 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\fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3.exe
    "C:\Users\Admin\AppData\Local\Temp\fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:544
    • C:\Users\Admin\AppData\Roaming\explorer.exe
      C:\Users\Admin\AppData\Roaming\explorer.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1964
      • C:\Users\Admin\AppData\Roaming\explorer.exe
        "C:\Users\Admin\AppData\Roaming\explorer.exe"
        3⤵
        • Modifies WinLogon for persistence
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Drops desktop.ini file(s)
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1696
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming\explorer.exe" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:816
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Roaming\explorer.exe" +s +h
            5⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:2016
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Roaming" +s +h
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1324
          • C:\Windows\SysWOW64\attrib.exe
            attrib "C:\Users\Admin\AppData\Roaming" +s +h
            5⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:1768
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
            PID:1800
          • C:\Windows\SysWOW64\MSDCSC\explorer.exe
            "C:\Windows\system32\MSDCSC\explorer.exe"
            4⤵
            • Executes dropped EXE
            • Drops file in System32 directory
            • Suspicious use of WriteProcessMemory
            PID:1752
            • C:\Users\Admin\AppData\Roaming\explorer.exe
              C:\Users\Admin\AppData\Roaming\explorer.exe
              5⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:640
              • C:\Users\Admin\AppData\Roaming\explorer.exe
                "C:\Users\Admin\AppData\Roaming\explorer.exe"
                6⤵
                • Executes dropped EXE
                PID:1296
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 640 -s 372
                6⤵
                • Loads dropped DLL
                • Program crash
                PID:868
        • C:\Users\Admin\AppData\Roaming\explorer.exe
          "C:\Users\Admin\AppData\Roaming\explorer.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:972
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            4⤵
              PID:1992

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\res.ico

        Filesize

        756KB

        MD5

        83d355130739c18d5419a83a624f024e

        SHA1

        fee1e63ccaf4e679305b9a1dbd85227dc31bd370

        SHA256

        e059c497f12743ceeab1dd0ed37de27ce2299c86119460b6f1f694c48371f769

        SHA512

        fdbaec7467a346791ef63c76909831bcf5a6b708f13d528fffcde87c15b2d554da33db74cc34946a3fb0297e44800db7c5c4650cc8dd15e54e609c094744c96d

      • C:\Users\Admin\AppData\Local\Temp\res.ico

        Filesize

        756KB

        MD5

        ef91d5f955a429d1d229abb265f137d1

        SHA1

        0246c7ea325032f771933e6b25d35106cd782184

        SHA256

        22b680cb88daa56b81055a907dd0c8b7d9e8b3924814c1fb157641472c1cf4bc

        SHA512

        bc34a71b02fefd07a93a4616cbcb8dba608747d6fb5f74298c9df05f1b5edee59787f7b4f9e768e236121ff89c3a8e49e68ee563465c717bd4f793d59ff3d371

      • C:\Users\Admin\AppData\Local\Temp\res.ico

        Filesize

        756KB

        MD5

        ef91d5f955a429d1d229abb265f137d1

        SHA1

        0246c7ea325032f771933e6b25d35106cd782184

        SHA256

        22b680cb88daa56b81055a907dd0c8b7d9e8b3924814c1fb157641472c1cf4bc

        SHA512

        bc34a71b02fefd07a93a4616cbcb8dba608747d6fb5f74298c9df05f1b5edee59787f7b4f9e768e236121ff89c3a8e49e68ee563465c717bd4f793d59ff3d371

      • C:\Users\Admin\AppData\Local\Temp\res.ico2

        Filesize

        756KB

        MD5

        ef91d5f955a429d1d229abb265f137d1

        SHA1

        0246c7ea325032f771933e6b25d35106cd782184

        SHA256

        22b680cb88daa56b81055a907dd0c8b7d9e8b3924814c1fb157641472c1cf4bc

        SHA512

        bc34a71b02fefd07a93a4616cbcb8dba608747d6fb5f74298c9df05f1b5edee59787f7b4f9e768e236121ff89c3a8e49e68ee563465c717bd4f793d59ff3d371

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Windows\SysWOW64\MSDCSC\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • C:\Windows\SysWOW64\MSDCSC\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Users\Admin\AppData\Roaming\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • \Windows\SysWOW64\MSDCSC\explorer.exe

        Filesize

        1.5MB

        MD5

        7589a096aa62e18e4f551f8aac5f30ce

        SHA1

        eaced6976c02d9f33f4a4d783f16a9290b5a71e5

        SHA256

        fc6f91773f25c82a791d065a632ea8d27928b08ea3034eac24b8e62b39d619f3

        SHA512

        0558c6020395a0b376ca834357b26c2079f6eae0ac3270650c7f65078f4eb2fdc97d53962d634e304aa5136a005682a0d9a8cb2c9f19ef2c91310a86af98c30c

      • memory/544-54-0x0000000075A91000-0x0000000075A93000-memory.dmp

        Filesize

        8KB

      • memory/972-108-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/972-106-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/972-97-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-63-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-69-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-68-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-66-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-85-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB

      • memory/1696-61-0x00000000000C0000-0x000000000018A000-memory.dmp

        Filesize

        808KB