Analysis

  • max time kernel
    93s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/05/2024, 04:44

General

  • Target

    2024-05-27_9b8622eb956606f25262d1efd12aabc4_cryptolocker.exe

  • Size

    48KB

  • MD5

    9b8622eb956606f25262d1efd12aabc4

  • SHA1

    2ede5cee708cf5be8e81e5c171c75c7da306f6ba

  • SHA256

    367ccdf710ba4671f01a079d26d7c916b22a618a532d682e9670cbcccb027966

  • SHA512

    8a490d270e5ee5ed874fa1333cfc256b8440ef0d82033332d64f070e1a9b53b5f6b2bcd2ceea23127952f441a90200c9ce38338b2a7bc37a0f2fe55a499eb824

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsmW:xj+VGMOtEvwDpjy+viHsv

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-27_9b8622eb956606f25262d1efd12aabc4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-27_9b8622eb956606f25262d1efd12aabc4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3544
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    5e4f7cd0b2eb1a6cf8a963ece314aa36

    SHA1

    1efff1494edb34ef957af8e99b9392d90250421a

    SHA256

    59bb01a52b51da97bff1ff2927c2ddb71f91abd087adc5c747851e4e5584fced

    SHA512

    d1ad0e3f5e7b3de1f6aed8b1d7d46a29bd8016540a919bdb494fd56861858aff76a7098e317c45561f5fb4dbda86f12add7e6139ab48449e6e2cadc9e56d2456

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/452-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/452-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/452-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/452-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3544-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3544-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3544-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3544-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3544-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB