Analysis

  • max time kernel
    151s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 06:53

General

  • Target

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5.exe

  • Size

    1.8MB

  • MD5

    14dccd6022b3dd646b6faba60a02f9f6

  • SHA1

    115d0acb064d8dc9e77dad53b04741d1820e6267

  • SHA256

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5

  • SHA512

    689d657bed3a7277912eb4378d45432b55ed43aff07c2c7b2610a57fbcb0d15de30f5ffb7aa9292ec45591895c46307f53ed6d860382614e2056c5b95d91cdf0

  • SSDEEP

    49152:rJZoQrbTFZY1iazOvFjzrZmMcRu0XsgR+PS4+F7xee:rtrbTA1WdH8TJXtKExee

Malware Config

Extracted

Family

darkcomet

Botnet

daynasmithx.ddns.net

C2

daynasmithx.ddns.net:100

Mutex

DCMIN_MUTEX-PXNS91A

Attributes
  • InstallPath

    DCSCMIN\explorer.exe

  • gencode

    rnNHzgvUMD43

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    explorer

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 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • AutoIT Executable 4 IoCs

    AutoIT scripts compiled to PE executables.

  • 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 use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5.exe
    "C:\Users\Admin\AppData\Local\Temp\35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1088
    • C:\Users\Admin\AppData\Local\Temp\35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5.exe
      "C:\Users\Admin\AppData\Local\Temp\35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1968
      • C:\Users\Admin\Documents\DCSCMIN\explorer.exe
        "C:\Users\Admin\Documents\DCSCMIN\explorer.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:1464
        • C:\Users\Admin\Documents\DCSCMIN\explorer.exe
          "C:\Users\Admin\Documents\DCSCMIN\explorer.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:908

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\td132ccwa2.gec

    Filesize

    658KB

    MD5

    19fa65fbcdfa280eb80cb02405609883

    SHA1

    c0da8a66743c29ef2e04ce744dcfc9c993a4b986

    SHA256

    c4ef9ead26fee5ef1ff533c360d60a39ddd306b63fda8d058c9c5aa82863ce8c

    SHA512

    9524796ec69d09397e7545ca7f3071f2ed8b8a45de5c7110d253de1e2ca7c85f54ee4eb366a043ad40cfb65552bf7b9f4b64c97dff4b81b51dc622305a7b9f98

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

    Filesize

    1.8MB

    MD5

    14dccd6022b3dd646b6faba60a02f9f6

    SHA1

    115d0acb064d8dc9e77dad53b04741d1820e6267

    SHA256

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5

    SHA512

    689d657bed3a7277912eb4378d45432b55ed43aff07c2c7b2610a57fbcb0d15de30f5ffb7aa9292ec45591895c46307f53ed6d860382614e2056c5b95d91cdf0

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

    Filesize

    1.8MB

    MD5

    14dccd6022b3dd646b6faba60a02f9f6

    SHA1

    115d0acb064d8dc9e77dad53b04741d1820e6267

    SHA256

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5

    SHA512

    689d657bed3a7277912eb4378d45432b55ed43aff07c2c7b2610a57fbcb0d15de30f5ffb7aa9292ec45591895c46307f53ed6d860382614e2056c5b95d91cdf0

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

    Filesize

    1.8MB

    MD5

    14dccd6022b3dd646b6faba60a02f9f6

    SHA1

    115d0acb064d8dc9e77dad53b04741d1820e6267

    SHA256

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5

    SHA512

    689d657bed3a7277912eb4378d45432b55ed43aff07c2c7b2610a57fbcb0d15de30f5ffb7aa9292ec45591895c46307f53ed6d860382614e2056c5b95d91cdf0

  • \Users\Admin\Documents\DCSCMIN\explorer.exe

    Filesize

    1.8MB

    MD5

    14dccd6022b3dd646b6faba60a02f9f6

    SHA1

    115d0acb064d8dc9e77dad53b04741d1820e6267

    SHA256

    35bcf8d5c18f8f939493a17a9c70faf014e15a87498c05c15b4ec9bbb3c32fb5

    SHA512

    689d657bed3a7277912eb4378d45432b55ed43aff07c2c7b2610a57fbcb0d15de30f5ffb7aa9292ec45591895c46307f53ed6d860382614e2056c5b95d91cdf0

  • memory/908-102-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/908-101-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/908-100-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/908-96-0x000000000048F888-mapping.dmp

  • memory/1088-54-0x0000000076681000-0x0000000076683000-memory.dmp

    Filesize

    8KB

  • memory/1464-76-0x0000000000000000-mapping.dmp

  • memory/1968-64-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-73-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-74-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-71-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-69-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-70-0x000000000048F888-mapping.dmp

  • memory/1968-67-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-65-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-62-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-60-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-58-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-56-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/1968-55-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB