Analysis

  • max time kernel
    152s
  • max time network
    182s
  • 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 15:45

General

  • Target

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab.exe

  • Size

    1.1MB

  • MD5

    d1fceb90478d54b87b35727a97cd0cc2

  • SHA1

    09f8ddc6065f6850fa493a7b524075dffa34dd28

  • SHA256

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab

  • SHA512

    d6a6b524ee4c085370bfb668ae1786f8ddc0e81f69a9af4288f48b955904e961b8fbb0a421ccb4c8aa7f6329574fa8919fe984c43acb432caf04b86a01a3a209

  • SSDEEP

    24576:MzJbMXSnCk10qYQW4Hcocwrv3QuYVp1zCyY:UbMXSnCk1oQjHcocwbQXC

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 5 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 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 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 48 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab.exe
    "C:\Users\Admin\AppData\Local\Temp\93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab.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:2792
    • 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:4876
    • 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 use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4680
      • 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:3212
    • 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 WriteProcessMemory
      PID:4176
      • 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:4756

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    658KB

    MD5

    ae5f32dfd87174e729d2c71883546953

    SHA1

    d2a5cd6f37ad921f868a6a7bff9920e6bea3d678

    SHA256

    7841f853a2a61c32b1ff6888869f6ba85d7b540048acabc2bf9f54f45a9d84f9

    SHA512

    4f013b73553d74eb0e71415f984ca405d90b12661f254965ae4936c297470db61f8f61f60b61d89132e0d2a03b5075145bb3cf31f25692ef35dc429b9ae70759

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

    658KB

    MD5

    ae5f32dfd87174e729d2c71883546953

    SHA1

    d2a5cd6f37ad921f868a6a7bff9920e6bea3d678

    SHA256

    7841f853a2a61c32b1ff6888869f6ba85d7b540048acabc2bf9f54f45a9d84f9

    SHA512

    4f013b73553d74eb0e71415f984ca405d90b12661f254965ae4936c297470db61f8f61f60b61d89132e0d2a03b5075145bb3cf31f25692ef35dc429b9ae70759

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

    1.1MB

    MD5

    d1fceb90478d54b87b35727a97cd0cc2

    SHA1

    09f8ddc6065f6850fa493a7b524075dffa34dd28

    SHA256

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab

    SHA512

    d6a6b524ee4c085370bfb668ae1786f8ddc0e81f69a9af4288f48b955904e961b8fbb0a421ccb4c8aa7f6329574fa8919fe984c43acb432caf04b86a01a3a209

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

    1.1MB

    MD5

    d1fceb90478d54b87b35727a97cd0cc2

    SHA1

    09f8ddc6065f6850fa493a7b524075dffa34dd28

    SHA256

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab

    SHA512

    d6a6b524ee4c085370bfb668ae1786f8ddc0e81f69a9af4288f48b955904e961b8fbb0a421ccb4c8aa7f6329574fa8919fe984c43acb432caf04b86a01a3a209

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

    1.1MB

    MD5

    d1fceb90478d54b87b35727a97cd0cc2

    SHA1

    09f8ddc6065f6850fa493a7b524075dffa34dd28

    SHA256

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab

    SHA512

    d6a6b524ee4c085370bfb668ae1786f8ddc0e81f69a9af4288f48b955904e961b8fbb0a421ccb4c8aa7f6329574fa8919fe984c43acb432caf04b86a01a3a209

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

    1.1MB

    MD5

    d1fceb90478d54b87b35727a97cd0cc2

    SHA1

    09f8ddc6065f6850fa493a7b524075dffa34dd28

    SHA256

    93a08e0a2a62a6e2422a0f05d578727254f42bed9a5eed8bf9b2e558dda81eab

    SHA512

    d6a6b524ee4c085370bfb668ae1786f8ddc0e81f69a9af4288f48b955904e961b8fbb0a421ccb4c8aa7f6329574fa8919fe984c43acb432caf04b86a01a3a209

  • 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

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

    1.1MB

    MD5

    d881de17aa8f2e2c08cbb7b265f928f9

    SHA1

    08936aebc87decf0af6e8eada191062b5e65ac2a

    SHA256

    b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

    SHA512

    5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

  • memory/2792-136-0x0000000007E20000-0x0000000007EBC000-memory.dmp
    Filesize

    624KB

  • memory/2792-132-0x0000000000BB0000-0x0000000000CCA000-memory.dmp
    Filesize

    1.1MB

  • memory/2792-135-0x0000000005680000-0x000000000568A000-memory.dmp
    Filesize

    40KB

  • memory/2792-134-0x00000000056A0000-0x0000000005732000-memory.dmp
    Filesize

    584KB

  • memory/2792-133-0x0000000005BB0000-0x0000000006154000-memory.dmp
    Filesize

    5.6MB

  • memory/3212-158-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/3212-150-0x0000000000000000-mapping.dmp
  • memory/4176-155-0x0000000000000000-mapping.dmp
  • memory/4680-146-0x0000000000000000-mapping.dmp
  • memory/4756-165-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4756-160-0x0000000000000000-mapping.dmp
  • memory/4876-138-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4876-145-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4876-144-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4876-142-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4876-141-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

  • memory/4876-137-0x0000000000000000-mapping.dmp