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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2024, 00:56

General

  • Target

    2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe

  • Size

    49KB

  • MD5

    a2c4cfe593ae221aa9375a5a8d553802

  • SHA1

    b43d2ae47e95c6900dc741e021eb221d2b8c3d26

  • SHA256

    2f7b4c47477b01776fdc86aed4ffb7a0b0ad35ed9dcb96e73c044dfbab2f918f

  • SHA512

    2087227d6c8201e27abb231cfb11da4d071cbaa187a2db80ffcfbe053fb60de820221412e539ecd89bb9e5c8478d805ab2b317374b4f77cb313480303a9986c5

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIBm:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7P

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-07_a2c4cfe593ae221aa9375a5a8d553802_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3156
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    50KB

    MD5

    b76dcd3585902db31033f020761143c8

    SHA1

    fd5712b418999b3c8a4827ce27ab2e57011aa71f

    SHA256

    0a7a1dcf1ec42ebda68a32cfde227682f0609696c4ca72d87cc964c0cd861f8a

    SHA512

    e9cb7fbc0590f6c3cf9ce314bef5f2c4927de7792272da70efef04fc8b6f57300a3b641d76bfe906364973f3ba4246d37d7e06b58b1d1db68385ff05f2157dab

  • memory/984-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3156-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3156-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3156-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB