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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/05/2024, 04:52

General

  • Target

    2024-05-29_70bf58577fee487a9e8b4a585adc799b_cryptolocker.exe

  • Size

    39KB

  • MD5

    70bf58577fee487a9e8b4a585adc799b

  • SHA1

    e12eb418aae174314aa5954de64d2b1887854afe

  • SHA256

    835962b49b56b8d83e08f3ef1eac22ecc2894e089b71c6c547b5f12f3feccbb4

  • SHA512

    b6e08ba0ae85d7ba7e3f616693faacca048643bbdb40491595f4ffa0c766596b249f227f2727828fd92b76b99c5491f1a1a2fa548678bf4983a299635f7b4656

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/s:qDdFJy3QMOtEvwDpjjWMl7T5

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\2024-05-29_70bf58577fee487a9e8b4a585adc799b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_70bf58577fee487a9e8b4a585adc799b_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3292

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    7767ea9ec187893f96a01d6c43fef1dd

    SHA1

    30d85b2177eaf8fe53b221b26910cd418465f184

    SHA256

    19d72afadb85210c1f4873df6ac6cc7816d2df892efc9326f9681cc2dbc07e3b

    SHA512

    c35633c4129437d4825e31e5975d2371524e2e0985f259680bf5245eebf36997b8bff057716ea63b286e98a58f89973f7bf364d6daed39fc77665b2ec1c4af72

  • memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2060-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/2060-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/2060-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/2060-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3292-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3292-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3292-27-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3292-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB