Analysis

  • max time kernel
    188s
  • max time network
    224s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2022 19:46

General

  • Target

    e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe

  • Size

    1.4MB

  • MD5

    867a94427df23e7400f1912e0054c02e

  • SHA1

    c8004ee0f6895757e6e3c391100b09ca6fedacc3

  • SHA256

    e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263

  • SHA512

    a2ef02dd014ab123d372b9925b86e352cc1324cb0ebc8838f94e52243fef2d867a49ad132e8c7e35b983d9395b7140e4a454f4dfa20d17aad7de6ee04fce579d

  • SSDEEP

    24576:V6f6UcjbYmVn3hITCmvOTggIRfmQX3zRYC6FVZPv+FWe4Ys/E:V861jnJgjYlDZ3+UT/E

Malware Config

Extracted

Family

darkcomet

Botnet

gyge

C2

127.0.0.1:1604

Mutex

DCMIN_MUTEX-CZGVNEU

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    2uuQwotMFJj1

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

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 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of WriteProcessMemory 41 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe
    "C:\Users\Admin\AppData\Local\Temp\e8acd36b264ba0f6ef059bd9e31a2adbae4ae8271462880501bbc786dd087263.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2032
    • C:\Users\Admin\AppData\Local\Temp\STUB.exe
      "C:\Users\Admin\AppData\Local\Temp\STUB.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4684
      • C:\Users\Admin\AppData\Local\Temp\STUB.exe
        "C:\Users\Admin\AppData\Local\Temp\STUB.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1232
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          4⤵
            PID:4504
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          3⤵
            PID:4496
        • C:\Users\Admin\AppData\Local\Temp\svchost.exe
          C:\Users\Admin\AppData\Local\Temp\svchost.exe
          2⤵
          • Modifies WinLogon for persistence
          • Executes dropped EXE
          • Checks computer location settings
          • Adds Run key to start application
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3816
          • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe
            "C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe"
            3⤵
            • Executes dropped EXE
            PID:2028

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\STUB.exe

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

      • C:\Users\Admin\AppData\Local\Temp\STUB.exe

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

      • C:\Users\Admin\AppData\Local\Temp\STUB.exe

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

      • C:\Users\Admin\AppData\Local\Temp\svchost.exe

        Filesize

        1.1MB

        MD5

        d881de17aa8f2e2c08cbb7b265f928f9

        SHA1

        08936aebc87decf0af6e8eada191062b5e65ac2a

        SHA256

        b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

        SHA512

        5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

      • C:\Users\Admin\AppData\Local\Temp\svchost.exe

        Filesize

        1.1MB

        MD5

        d881de17aa8f2e2c08cbb7b265f928f9

        SHA1

        08936aebc87decf0af6e8eada191062b5e65ac2a

        SHA256

        b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

        SHA512

        5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

      • C:\Users\Admin\AppData\Roaming\chrtmp

        Filesize

        88KB

        MD5

        8ee018331e95a610680a789192a9d362

        SHA1

        e1fba0ac3f3d8689acf6c2ee26afdfd0c8e02df9

        SHA256

        94354ea6703c5ef5fa052aeb1d29715587d80300858ebc063a61c02b7e6e9575

        SHA512

        4b89b5adc77641e497eda7db62a48fee7b4b8dda83bff637cac850645d31deb93aafee5afeb41390e07fd16505a63f418b6cb153a1d35777c483e2d6d3f783b4

      • C:\Users\Admin\AppData\Roaming\fud istealer 2.exe

        Filesize

        471KB

        MD5

        c928bc831e6ce7922c9fe238cdabb934

        SHA1

        fde9ab78e71d9800f6f2cdfb86a3f8a66d3aed52

        SHA256

        bcaf53d9cb39dc6031270bfa336d450aae0cbab112d5e7cbf369702f1a9bcf24

        SHA512

        07d7a5557bb56ceaf72c65b65c3fd5e1ddbd10dd75a5b6ac726b0e95c33eb1ea0c77f996b1969991452f12accb92c0628f68832e64c9f679450d4147ef57cf5d

      • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

        Filesize

        1.1MB

        MD5

        d881de17aa8f2e2c08cbb7b265f928f9

        SHA1

        08936aebc87decf0af6e8eada191062b5e65ac2a

        SHA256

        b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

        SHA512

        5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

      • C:\Users\Admin\Documents\DCSCMIN\IMDCSC.exe

        Filesize

        1.1MB

        MD5

        d881de17aa8f2e2c08cbb7b265f928f9

        SHA1

        08936aebc87decf0af6e8eada191062b5e65ac2a

        SHA256

        b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

        SHA512

        5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

      • memory/1232-165-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB

      • memory/1232-136-0x0000000000000000-mapping.dmp

      • memory/1232-156-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB

      • memory/2028-162-0x0000000000000000-mapping.dmp

      • memory/2032-157-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB

      • memory/2032-132-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB

      • memory/3816-145-0x0000000000000000-mapping.dmp

      • memory/3816-154-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/3816-158-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/3816-149-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/3816-160-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/3816-161-0x0000000000400000-0x00000000004B2000-memory.dmp

        Filesize

        712KB

      • memory/4496-138-0x0000000000000000-mapping.dmp

      • memory/4496-153-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/4496-146-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/4496-141-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/4504-140-0x0000000000000000-mapping.dmp

      • memory/4504-155-0x0000000000400000-0x0000000000458000-memory.dmp

        Filesize

        352KB

      • memory/4684-147-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB

      • memory/4684-133-0x0000000000000000-mapping.dmp

      • memory/4684-166-0x0000000074E50000-0x0000000075401000-memory.dmp

        Filesize

        5.7MB