Analysis

  • max time kernel
    153s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 12:49

General

  • Target

    e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af.exe

  • Size

    1.4MB

  • MD5

    5767048bea30e525e28042ec49c0bf1a

  • SHA1

    18b156569e9a91cb5a6e484e3ee018539704fa2c

  • SHA256

    e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af

  • SHA512

    47bb86022569d8a36500693baefee77dcdfd086585d7a8c29141294a254ca1a4ef0513a163cafc3ac7b63853d123d1289d50a02033be836ff902493fcf209172

  • SSDEEP

    24576:b/iGnOdLr1TyV6WVuL0XHLR06fk0pDCt5KGiX:HncZTyV6WVuAtPfDGfKZX

Malware Config

Extracted

Family

darkcomet

Botnet

Wrdex

C2

127.0.0.1:1454

larryking.no-ip.biz:1454

Mutex

DC_MUTEX-7MQCAT1

Attributes
  • gencode

    ujzd2CCjR7AN

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af.exe
    "C:\Users\Admin\AppData\Local\Temp\e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4772
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\\mata.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2528
      • C:\Windows\SysWOW64\wscript.exe
        wscript.exe "C:\Users\Admin\AppData\Local\Temp\invs.vbs" "C:\Users\Admin\AppData\Local\Temp\mata2.bat
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:3372
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\mata2.bat" "
          4⤵
            PID:5048
      • C:\Users\Admin\AppData\Local\Temp\utini .exe
        "C:\Users\Admin\AppData\Local\Temp\utini .exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2296

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\invs.vbs

      Filesize

      78B

      MD5

      c578d9653b22800c3eb6b6a51219bbb8

      SHA1

      a97aa251901bbe179a48dbc7a0c1872e163b1f2d

      SHA256

      20a98a7e6e137bb1b9bd5ef6911a479cb8eac925b80d6db4e70b19f62a40cce2

      SHA512

      3ae6dc8f02d1a78e1235a0782b632972da5a74ab32287cc41aa672d4fa4a9d34bb5fc50eba07b6915f2e61c402927cd5f6feeb7f7602afa2f64e91efb3b7fc4d

    • C:\Users\Admin\AppData\Local\Temp\mata.bat

      Filesize

      47B

      MD5

      58c538a6ae20a3c6031217903cdf8e5d

      SHA1

      399fd50eadf4945b665877facfc4f53d16e18b1e

      SHA256

      6bcc0e04d9bc32209d90a65c320dc6363e523dd94b38b17bcdc5b980b6405f53

      SHA512

      c01828a5390fec3443e19d317137ae873de77c7737db7802650430e6a0a1edbd3aabe362903243b372536418fbd8482c2a6efd122d853744a41ade567956c359

    • C:\Users\Admin\AppData\Local\Temp\mata2.bat

      Filesize

      47B

      MD5

      211c543ddac4ea9273c99031f9dadd22

      SHA1

      1cb862349c3deca0af4bdda9a838ddb99f3ce49b

      SHA256

      c1f0f30deccf7edc8760d22c94875248d6662358893f13e1f1a3780b0872e46d

      SHA512

      9b347a926b243813083a29bb62c54a359424312542bfe5acf43c1e3629213f93c0d95988b0427c3c8d66231429498e09984b8b104276cee0bed43e635d9b9429

    • C:\Users\Admin\AppData\Local\Temp\rundll11-.txt

      Filesize

      1.4MB

      MD5

      5767048bea30e525e28042ec49c0bf1a

      SHA1

      18b156569e9a91cb5a6e484e3ee018539704fa2c

      SHA256

      e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af

      SHA512

      47bb86022569d8a36500693baefee77dcdfd086585d7a8c29141294a254ca1a4ef0513a163cafc3ac7b63853d123d1289d50a02033be836ff902493fcf209172

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

      Filesize

      1.4MB

      MD5

      5767048bea30e525e28042ec49c0bf1a

      SHA1

      18b156569e9a91cb5a6e484e3ee018539704fa2c

      SHA256

      e849e9c54d0af4b566e025cea441b849ae8ef17600f0b00d4c573dd21da311af

      SHA512

      47bb86022569d8a36500693baefee77dcdfd086585d7a8c29141294a254ca1a4ef0513a163cafc3ac7b63853d123d1289d50a02033be836ff902493fcf209172

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

      Filesize

      57KB

      MD5

      454501a66ad6e85175a6757573d79f8b

      SHA1

      8ca96c61f26a640a5b1b1152d055260b9d43e308

      SHA256

      7fd4f35aff4a0d4bfaae3a5dfb14b94934276df0e96d1a417a8f3693915e72c8

      SHA512

      9dc3b9a9b7e661acc3ac9a0ff4fd764097fc41ccbc2e7969cae9805cc693a87e8255e459ea5f315271825e7e517a46649acc8d42122a8018264cc3f2efa34fb7

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

      Filesize

      57KB

      MD5

      454501a66ad6e85175a6757573d79f8b

      SHA1

      8ca96c61f26a640a5b1b1152d055260b9d43e308

      SHA256

      7fd4f35aff4a0d4bfaae3a5dfb14b94934276df0e96d1a417a8f3693915e72c8

      SHA512

      9dc3b9a9b7e661acc3ac9a0ff4fd764097fc41ccbc2e7969cae9805cc693a87e8255e459ea5f315271825e7e517a46649acc8d42122a8018264cc3f2efa34fb7

    • memory/2296-136-0x0000000000000000-mapping.dmp

    • memory/2296-142-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2296-145-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2296-146-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2296-148-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/2528-133-0x0000000000000000-mapping.dmp

    • memory/3372-135-0x0000000000000000-mapping.dmp

    • memory/4772-141-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/4772-132-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/4772-150-0x0000000074EC0000-0x0000000075471000-memory.dmp

      Filesize

      5.7MB

    • memory/5048-139-0x0000000000000000-mapping.dmp