Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 23:08

General

  • Target

    a0944adca0738fef3c942b008d3646ee.exe

  • Size

    844KB

  • MD5

    a0944adca0738fef3c942b008d3646ee

  • SHA1

    039ed8aa1a7f2a9d16a246e245b388b64902f717

  • SHA256

    82a9aa0fd8bd98de2279486644673dd85f492310074bd2c94a21558c87e98164

  • SHA512

    cfb87fdf2eee241635a4078080546356ad7f1428bf385016d5aa7909b2e23923df28c685e43f38493bd6857ee64c1d57e00ab34bb5f59bea9a1db8a7183f31a1

  • SSDEEP

    24576:70MgAAUnebGZYKulmSEuoJzsWdqWeKO0X:PFAUnYKunWIWx

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a0944adca0738fef3c942b008d3646ee.exe
    "C:\Users\Admin\AppData\Local\Temp\a0944adca0738fef3c942b008d3646ee.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3616
    • C:\Users\Admin\AppData\Local\Temp\a0944adca0738fef3c942b008d3646ee.exe
      C:\Users\Admin\AppData\Local\Temp\a0944adca0738fef3c942b008d3646ee
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5088
      • C:\Windows\WindowaUpdatet\winupdate.exe
        "C:\Windows\WindowaUpdatet\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4292
        • C:\Windows\WindowaUpdatet\winupdate.exe
          C:\Windows\WindowaUpdatet\winupdate
          4⤵
          • Windows security bypass
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Windows security modification
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:876
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3636
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • Runs ping.exe
          PID:1828

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    105B

    MD5

    8a7ccf4f8832923245069c66ff37712e

    SHA1

    d67a19bfada2c36eb432e0a86e0834ef26107921

    SHA256

    a3c62d78404162e128897d7608d8751561c416c37b10362e5be2a95c7cfbae3a

    SHA512

    6a92cac914b4b681f458976e8755912118ee7199d5a7dda0da1f50415c3a495cae754207568b0ea23afd00f9a74f33547fdb0572f7eefee3b3bfcf3055a168bc

  • C:\Windows\WindowaUpdatet\winupdate.exe

    Filesize

    844KB

    MD5

    a0944adca0738fef3c942b008d3646ee

    SHA1

    039ed8aa1a7f2a9d16a246e245b388b64902f717

    SHA256

    82a9aa0fd8bd98de2279486644673dd85f492310074bd2c94a21558c87e98164

    SHA512

    cfb87fdf2eee241635a4078080546356ad7f1428bf385016d5aa7909b2e23923df28c685e43f38493bd6857ee64c1d57e00ab34bb5f59bea9a1db8a7183f31a1

  • memory/876-88-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-91-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-105-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-104-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-103-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-102-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-80-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-81-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-90-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-84-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-101-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-85-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-86-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-87-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-100-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-99-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-82-0x00000000021C0000-0x00000000021C1000-memory.dmp

    Filesize

    4KB

  • memory/876-89-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-92-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-93-0x00000000021C0000-0x00000000021C1000-memory.dmp

    Filesize

    4KB

  • memory/876-94-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-95-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-96-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-97-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/876-98-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-2-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-5-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-3-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-74-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-4-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-7-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/5088-6-0x0000000002880000-0x0000000002881000-memory.dmp

    Filesize

    4KB