Analysis

  • max time kernel
    163s
  • max time network
    202s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 12:39

General

  • Target

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625.exe

  • Size

    679KB

  • MD5

    5adafaad972e3ba20c8a9381e00ef147

  • SHA1

    f9ea16679b27fa79944b963f8db45ec00e9fb32d

  • SHA256

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625

  • SHA512

    be246760efab08d080d6f0c1c5b1f312a0e3155e4191c37e86f8b99a03406d61bd569660d32bee4919da4cbcacffbce2763cbc53e32385eaf3ee22077e91e391

  • SSDEEP

    12288:P1iW3qxJbe973FR15E3plnFWSZVcV88B37adcdwARQzySyQST/ZscO:tBj73FjCZlFWWLUa1zySyXhs

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

dcratted.duckdns.org:3080

Mutex

DCMIN_MUTEX-G22C7RQ

Attributes
  • gencode

    FFUwUJHhLVPu

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 3 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 51 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625.exe
    "C:\Users\Admin\AppData\Local\Temp\f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625.exe"
    1⤵
    • 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:4216
    • C:\Users\Admin\AppData\Local\Temp\vbc.exe
      C:\Users\Admin\AppData\Local\Temp\vbc.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:424
    • C:\Users\Admin\AppData\Local\Temp\svchost .exe
      "C:\Users\Admin\AppData\Local\Temp\svchost .exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1496
    • C:\Users\Admin\AppData\Local\Temp\csrss .exe
      "C:\Users\Admin\AppData\Local\Temp\csrss .exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4820
      • C:\Users\Admin\AppData\Local\Temp\vbc.exe
        C:\Users\Admin\AppData\Local\Temp\vbc.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:980

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\System.config

    Filesize

    658KB

    MD5

    f7bd5472d2fbc710b770d6c4eaf5882a

    SHA1

    8769f69d7a410ce92faa2c331ef335fc52b1708e

    SHA256

    d97bec075cabf338039503a5400a2971aa769630ede37862fc9de742c40a094d

    SHA512

    78a0159a75bedac15a4c1777a2ead30f8216c6529c1d489ed83bd3c8700cd0989566f30504fa75d988622c1ab1c2c3f9996d647daaa428645db2408787ae3353

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

    Filesize

    679KB

    MD5

    5adafaad972e3ba20c8a9381e00ef147

    SHA1

    f9ea16679b27fa79944b963f8db45ec00e9fb32d

    SHA256

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625

    SHA512

    be246760efab08d080d6f0c1c5b1f312a0e3155e4191c37e86f8b99a03406d61bd569660d32bee4919da4cbcacffbce2763cbc53e32385eaf3ee22077e91e391

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

    Filesize

    679KB

    MD5

    5adafaad972e3ba20c8a9381e00ef147

    SHA1

    f9ea16679b27fa79944b963f8db45ec00e9fb32d

    SHA256

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625

    SHA512

    be246760efab08d080d6f0c1c5b1f312a0e3155e4191c37e86f8b99a03406d61bd569660d32bee4919da4cbcacffbce2763cbc53e32385eaf3ee22077e91e391

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

    Filesize

    679KB

    MD5

    5adafaad972e3ba20c8a9381e00ef147

    SHA1

    f9ea16679b27fa79944b963f8db45ec00e9fb32d

    SHA256

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625

    SHA512

    be246760efab08d080d6f0c1c5b1f312a0e3155e4191c37e86f8b99a03406d61bd569660d32bee4919da4cbcacffbce2763cbc53e32385eaf3ee22077e91e391

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

    Filesize

    679KB

    MD5

    5adafaad972e3ba20c8a9381e00ef147

    SHA1

    f9ea16679b27fa79944b963f8db45ec00e9fb32d

    SHA256

    f876d29899bbb047f8f5fbb14c702a3ba88a34989d5ebe62b736ca060c1c4625

    SHA512

    be246760efab08d080d6f0c1c5b1f312a0e3155e4191c37e86f8b99a03406d61bd569660d32bee4919da4cbcacffbce2763cbc53e32385eaf3ee22077e91e391

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

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

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

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

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

    Filesize

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/424-145-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/424-142-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/424-144-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/424-141-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/424-138-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/424-137-0x0000000000000000-mapping.dmp

  • memory/424-149-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/980-154-0x0000000000000000-mapping.dmp

  • memory/980-159-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1496-146-0x0000000000000000-mapping.dmp

  • memory/4216-132-0x0000000000EC0000-0x0000000000F70000-memory.dmp

    Filesize

    704KB

  • memory/4216-135-0x0000000005920000-0x000000000592A000-memory.dmp

    Filesize

    40KB

  • memory/4216-134-0x0000000005940000-0x00000000059D2000-memory.dmp

    Filesize

    584KB

  • memory/4216-133-0x0000000005E10000-0x00000000063B4000-memory.dmp

    Filesize

    5.6MB

  • memory/4216-136-0x0000000007E50000-0x0000000007EEC000-memory.dmp

    Filesize

    624KB

  • memory/4820-150-0x0000000000000000-mapping.dmp