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, 15:33

General

  • Target

    2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker.exe

  • Size

    92KB

  • MD5

    e4eb63de14f56983b365b68199cf2c4c

  • SHA1

    deab3733bf021ce1fa857a622aaeb2aa08f44892

  • SHA256

    b8c87dea9554b06b87fd88d9d5f23f0dfc41368132cc2140054d75a16aa9d01d

  • SHA512

    8d567626d61e633a1a1b51c02f6a56c5e72fefeec40802991200015ee80375ddf63973eff54e07fda4a126c23f6e137a9507bc073e8f274510df9efee7618954

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgdd2r:AnBdOOtEvwDpj6z0

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_e4eb63de14f56983b365b68199cf2c4c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_e4eb63de14f56983b365b68199cf2c4c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    92KB

    MD5

    f04d9dfc405ac56785b70ff84c42a6dc

    SHA1

    08b536d2a6e137ed577a42ef6eb17aaa77ec7d2f

    SHA256

    5efb9147f1f46818f391bef8c7c4b479389215e7eecebb0719bf557f1ba7a3ae

    SHA512

    2743a208598f4c99c9dae1add0bf06edfade4f1621ae3acd16ee2060fe86b24563130f74d6d16c22dac99e5e5a295ec78c95f206cc9cbd3e0595146d4c56d822

  • memory/436-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/436-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/436-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/436-28-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3068-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3068-1-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/3068-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3068-9-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/3068-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB