Analysis

  • max time kernel
    195s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 8 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
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 44 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:2804
    • 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
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2584
      • C:\Windows\WindowaUpdatet\winupdate.exe
        "C:\Windows\WindowaUpdatet\winupdate.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:584
        • C:\Windows\WindowaUpdatet\winupdate.exe
          C:\Windows\WindowaUpdatet\winupdate
          4⤵
          • Windows security bypass
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Loads dropped DLL
          • 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:2164
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\_dcsc_.bat" "
        3⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:2792
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 2
          4⤵
          • Runs ping.exe
          PID:1992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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

  • \Windows\WindowaUpdatet\winupdate.exe

    Filesize

    832KB

    MD5

    157b70b28ccb30e83648047b554e3c3d

    SHA1

    aec6f47ebbbaeac58e84125eed9718fa3f85a4a9

    SHA256

    f80290a8421be89d934d806011a56f7f200d39cef25aea9d3c67422ef7d04227

    SHA512

    1086fc5604e9dec06b414b68cc550813faae21af6dcb066ce3718573a18778dfccfffdeeeb67bb650effe309c24c23da2f82dc661b2f2e98e1b6c56304e63126

  • memory/2164-84-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-85-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-83-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-82-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-81-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-80-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-79-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-74-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2164-69-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2584-16-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2584-25-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-26-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2584-23-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-22-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-44-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-21-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-20-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-24-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-2-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-14-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-12-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-10-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-8-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-6-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB

  • memory/2584-4-0x0000000000400000-0x00000000004C0000-memory.dmp

    Filesize

    768KB