Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/05/2024, 23:45

General

  • Target

    2024-05-16_1ebca21f1ed735a2cd61d59bd7e19d03_cryptolocker.exe

  • Size

    39KB

  • MD5

    1ebca21f1ed735a2cd61d59bd7e19d03

  • SHA1

    e5aec87a86d7a5d9e1dee012272e06b3e93b0579

  • SHA256

    a54b4176bf8ac4991f9b55467298b3d25142dd945a32a4d68080c1280eb31572

  • SHA512

    01f7523c728f7fd62e7c2b200c400a7fbb10bcb2daaac1211f13d4ddd46a049cfd14d78169a2c2bb4a315aceca53e3e05474c90f894db4e195a6d208a57f24fd

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYjwL:qDdFJy3QMOtEvwDpjjWMl7TkM

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\2024-05-16_1ebca21f1ed735a2cd61d59bd7e19d03_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-16_1ebca21f1ed735a2cd61d59bd7e19d03_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1624
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1780

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    6437fbbd43404bb2e68620d152dfcea5

    SHA1

    78313ae6344847073fb3c734169b8ad62477ec6f

    SHA256

    d8088a1593ba26535b8a47b30a85e45ea3a48dffbc3ad17540f7579c06d62331

    SHA512

    ed33caceb9b56cc97789d5449aac040c32a7981dc9b5889603e42a032d81c813686c79cb077ebfa71d4ffc9398b5066a02f70c510742c4aefe03760810bfd489

  • memory/1624-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1624-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1624-2-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/1624-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1624-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1780-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1780-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

    Filesize

    24KB

  • memory/1780-26-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/1780-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB