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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/05/2024, 23:23

General

  • Target

    Choky Ice And His Best Friend Max A Surprising Us With Great Threesome Action.scr

  • Size

    597KB

  • MD5

    a536b5697a2055366d279ddc989a8c40

  • SHA1

    37caea17d1d1f700a9497726314964c841b087b5

  • SHA256

    2fca538f9cdbf78491933a5f5ffd02f176c372de8f468fbcc8d6b2da682cead7

  • SHA512

    e5ea92ab275fc8c36405e214a3cedc5845a2cfd76e4fe250a5edb1a2bc2335806a9f3ecab983934b6e5b8417980d3b8977ce038bf04acbeb9c461d8942adfdee

  • SSDEEP

    12288:ONWz1AUZbht1FGdX3UCwWOXA4DmeLM9S6bnM9S6bnM9S6bnM9S6bnM9S6bnM9S:OQzO8bhOgB2UUUUUS

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Modifies security service 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Disables Task Manager via registry modification
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 4 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 8 IoCs

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

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Choky Ice And His Best Friend Max A Surprising Us With Great Threesome Action.scr
    "C:\Users\Admin\AppData\Local\Temp\Choky Ice And His Best Friend Max A Surprising Us With Great Threesome Action.scr" /S
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1220
    • C:\Users\Admin\AppData\Local\Temp\Choky Ice And His Best Friend Max A Surprising Us With Great Threesome Action.scr
      "C:\Users\Admin\AppData\Local\Temp\Choky Ice And His Best Friend Max A Surprising Us With Great Threesome Action.scr"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1424
      • C:\Users\Admin\AppData\Local\Temp\fnzRevUT.exe
        "C:\Users\Admin\AppData\Local\Temp\fnzRevUT.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:440
        • C:\Users\Admin\AppData\Local\Temp\fnzRevUT.exe
          "C:\Users\Admin\AppData\Local\Temp\fnzRevUT.exe"
          4⤵
          • Modifies firewall policy service
          • Modifies security service
          • UAC bypass
          • Windows security bypass
          • Drops startup file
          • Executes dropped EXE
          • Windows security modification
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • System policy modification
          PID:3392

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\fnzRevUT.exe

    Filesize

    597KB

    MD5

    a536b5697a2055366d279ddc989a8c40

    SHA1

    37caea17d1d1f700a9497726314964c841b087b5

    SHA256

    2fca538f9cdbf78491933a5f5ffd02f176c372de8f468fbcc8d6b2da682cead7

    SHA512

    e5ea92ab275fc8c36405e214a3cedc5845a2cfd76e4fe250a5edb1a2bc2335806a9f3ecab983934b6e5b8417980d3b8977ce038bf04acbeb9c461d8942adfdee

  • memory/440-28-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/440-22-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/440-21-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1220-1-0x0000000000650000-0x0000000000651000-memory.dmp

    Filesize

    4KB

  • memory/1220-0-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1220-7-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/1424-4-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1424-8-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1424-5-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1424-2-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/1424-36-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/3392-34-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/3392-38-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB

  • memory/3392-43-0x0000000000400000-0x0000000000416000-memory.dmp

    Filesize

    88KB