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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
    19/09/2022, 07:39

General

  • Target

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc.exe

  • Size

    421KB

  • MD5

    0a9ec679a384121c95204d4c259202ef

  • SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

  • SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

  • SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • SSDEEP

    12288:RaG4mtL6wfPAdTqrNH30dC0dM17/PmX2A:Rz4mtL6wH2QNX4C0dM1DmmA

Malware Config

Signatures

  • Darkcomet

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 2 IoCs
  • UPX packed file 12 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • 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.

  • 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
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc.exe
    "C:\Users\Admin\AppData\Local\Temp\629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:112
    • C:\Users\Admin\AppData\Local\Temp\629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc.exe
      C:\Users\Admin\AppData\Local\Temp\629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1792
      • C:\system32\isass.exe
        "C:\system32\isass.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\system32\isass.exe
          C:\system32\isass.exe
          4⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • Executes dropped EXE
          • Checks BIOS information in registry
          • Windows security modification
          • Adds Run key to start application
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • System policy modification
          PID:268

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\system32\isass.exe

    Filesize

    421KB

    MD5

    0a9ec679a384121c95204d4c259202ef

    SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

    SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

    SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • C:\system32\isass.exe

    Filesize

    421KB

    MD5

    0a9ec679a384121c95204d4c259202ef

    SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

    SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

    SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • C:\system32\isass.exe

    Filesize

    421KB

    MD5

    0a9ec679a384121c95204d4c259202ef

    SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

    SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

    SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • \system32\isass.exe

    Filesize

    421KB

    MD5

    0a9ec679a384121c95204d4c259202ef

    SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

    SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

    SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • \system32\isass.exe

    Filesize

    421KB

    MD5

    0a9ec679a384121c95204d4c259202ef

    SHA1

    44e703e7ddafe82e6bbdc119760a07f69471ca32

    SHA256

    629dc4304f9c36caf5cae2c23bba026298f40de00e87a2f3116488f642cac4bc

    SHA512

    195e4c1e52a245839de83da5cce409049fb1e10c5af3763659a68de0b0e310932056cb0a8456e0bff2d8fb43e8c40fcf59084cc88387bce2e4276109388d0cc8

  • memory/112-55-0x00000000001C0000-0x00000000001D0000-memory.dmp

    Filesize

    64KB

  • memory/112-57-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/112-56-0x00000000001D0000-0x00000000001E0000-memory.dmp

    Filesize

    64KB

  • memory/112-58-0x00000000001F0000-0x0000000000200000-memory.dmp

    Filesize

    64KB

  • memory/112-59-0x0000000000280000-0x0000000000290000-memory.dmp

    Filesize

    64KB

  • memory/112-61-0x0000000000290000-0x00000000002A0000-memory.dmp

    Filesize

    64KB

  • memory/112-54-0x00000000001B0000-0x00000000001C0000-memory.dmp

    Filesize

    64KB

  • memory/268-100-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/268-98-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/268-99-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/268-101-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/984-84-0x0000000000270000-0x0000000000280000-memory.dmp

    Filesize

    64KB

  • memory/984-82-0x0000000000250000-0x0000000000260000-memory.dmp

    Filesize

    64KB

  • memory/984-86-0x0000000000280000-0x0000000000290000-memory.dmp

    Filesize

    64KB

  • memory/984-78-0x0000000000220000-0x0000000000230000-memory.dmp

    Filesize

    64KB

  • memory/984-79-0x0000000000230000-0x0000000000240000-memory.dmp

    Filesize

    64KB

  • memory/984-80-0x0000000000240000-0x0000000000250000-memory.dmp

    Filesize

    64KB

  • memory/984-83-0x0000000000260000-0x0000000000270000-memory.dmp

    Filesize

    64KB

  • memory/1792-81-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-72-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-71-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-73-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-70-0x0000000074C11000-0x0000000074C13000-memory.dmp

    Filesize

    8KB

  • memory/1792-69-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-67-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-65-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-63-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB

  • memory/1792-62-0x0000000000400000-0x00000000004F7000-memory.dmp

    Filesize

    988KB