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
    11-05-2024 23:31

General

  • Target

    2024-05-11_d056df3ef182508448d86d45e3ce5288_cryptolocker.exe

  • Size

    39KB

  • MD5

    d056df3ef182508448d86d45e3ce5288

  • SHA1

    076dccdb918dd2dfae790b474b4872c74a569b5a

  • SHA256

    1c0fe7576cf4b8558214b3ba0e0a21cef70c153af8a602a0b1c9fa2923842366

  • SHA512

    8a13e37c99a0d01712672016cbcdda6bd28d6d9c65495bee6930429c65ada01e8e5b5e9e9eb0965c26c6dc6fcd6ea6c6724e902dafd8375ef0f854af867a35a7

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/U:qDdFJy3QMOtEvwDpjjWMl7Tx

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\2024-05-11_d056df3ef182508448d86d45e3ce5288_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_d056df3ef182508448d86d45e3ce5288_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:432
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    1008b7ed40392299a5e50241493e9e56

    SHA1

    ea2efbad8ed60589bec0db088beb51e91a0d5374

    SHA256

    8ba4a0d679b21d0fc998aaa9b8d5c2cd0709b3e851c5c046360d7005b815d02b

    SHA512

    5178cfe0bc0eacd9f97cb199a1d545348d758dffdea396c7954ae7dabfe19f0f788a98d586a23447f5c61d89ccba8129384790a4b6500196da4b25e90e7e646c

  • memory/432-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/432-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/432-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/432-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/432-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4348-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4348-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB