Analysis

  • max time kernel
    150s
  • max time network
    148s
  • 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, 17:12

General

  • Target

    2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe

  • Size

    62KB

  • MD5

    90f6766a46b3df081a75420ddae5ee49

  • SHA1

    7ca1739d7d50dfd53cf9d4b23fa79f5e6a5710f3

  • SHA256

    25aea726f37bc9d0f7faf4d9ff77b8a5a245f4ddbc9e067d2c9e51b1a10f09ed

  • SHA512

    3c4fd1213aac4b83aad7c6e34c0a10e34834057d8b865c522296a423aa098ff14e38d210e8ece69abeeb48477d0fddeae28ea66aca38916615254f0f166f5b02

  • SSDEEP

    768:0Qz7yVEhs9+syJP6ntOOtEvwDpjFSXOQ69zbjlAAX5e9zW:0j+soPSMOtEvwDpjwizbR9XwzW

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 4 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 4 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_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-12_90f6766a46b3df081a75420ddae5ee49_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:944
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2400

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    63KB

    MD5

    5e1e9f81314314e24a6b385ce639fb08

    SHA1

    968895b88e7f9e3ebb05ea831a63671bfd138824

    SHA256

    788ec95743f58966f7dd61b8df1614cfe818b824d57ad6029f2f640031b4b3ea

    SHA512

    653201612e5fc83abba6e36b85b6dc5e17951451a5ada07aaf2ab7723d9fd1dabb89ab6056390d093bf679e6454b64d2f5ecb94deee83eeffc287f9ad8e5f89f

  • memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/944-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/944-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/944-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/944-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2400-19-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/2400-20-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/2400-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB