Analysis

  • max time kernel
    150s
  • 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
    12/06/2024, 18:49

General

  • Target

    2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker.exe

  • Size

    40KB

  • MD5

    61304570d99fe7aaecffd49beecec94d

  • SHA1

    e3a7146e36cff679aed621cee825e133996f1bec

  • SHA256

    279eeb24428ff9c5b6460b89ac51f94cbdf5fe5912b9829b13ff85f4fcb00b85

  • SHA512

    e67008a20bb6256ea7eea6149b013001721670ae4bdb8969bf0134a167bbfd269566d02ff527f6ff4bc395fc295698e9d4489a4f71c7bf7da91b3766c1cc6840

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDb5:qDdFJy3QMOtEvwDpjjWMl7Tdl

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\2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_61304570d99fe7aaecffd49beecec94d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3904
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2216

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    98131efd313ad10bdf7b6ecd0600cd78

    SHA1

    6db8e4d6ec504c02297c0d1ff92f0dd05ecb4150

    SHA256

    88228f32a52678f117477e2021ab361d8e1d712c34aad7c7cee970e1d27883a5

    SHA512

    deba179242ac7fc7ad7a36cde5219c069ba9443552ddcb660fb8fd10fd0b2e9c97ff8dfe0943437a775f7b9da5cb5268e8b63b6c6bbb1d9ed8807e17e7187c1e

  • memory/2216-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2216-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3904-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3904-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3904-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3904-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3904-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB