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Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/02/2024, 04:11

General

  • Target

    2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe

  • Size

    88KB

  • MD5

    3f062d0ac36c9822b851dddf9d52979e

  • SHA1

    be0f09a1b431d42d10e20409fd7f3698f3fb7b45

  • SHA256

    76768dc797b14f1821c10e50dda85cbe2db01c19fe7e80b69930059ffe58d413

  • SHA512

    a8fbe56076550b17011196ab05af8c785039ff7778ed79228b6cac3866cae90e28a2920d568d53732758fcf7595c402e80877ad94604a828ad568b3a44bd459c

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgkD:AnBdOOtEvwDpj6zS

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_3f062d0ac36c9822b851dddf9d52979e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4268
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2176

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    88KB

    MD5

    8bd0c6e83009cdc3daef0ccd91f61ea9

    SHA1

    8d302eb9f68a6ea9d8517e2caac423cd094e2fda

    SHA256

    c9c6efa23ea8c07d59c200df56929e5ec5f70fa28f728ac6352e02baf9619bb0

    SHA512

    eb589ace398fdc0e8b57bf800a26767d99b18d90fceada74b39f8c5d021e79df6b7a1eed2ce83c37b0001a01be7ff9571640319bd7d18f326ae1445da7944cc7

  • memory/2176-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2176-20-0x0000000001F30000-0x0000000001F36000-memory.dmp

    Filesize

    24KB

  • memory/2176-26-0x0000000001F10000-0x0000000001F16000-memory.dmp

    Filesize

    24KB

  • memory/2176-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4268-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4268-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4268-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4268-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4268-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB