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Analysis

  • max time kernel
    91s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/02/2024, 07:25

General

  • Target

    2024-02-13_0f3acc4a58b9240588224e7d55d0bf1c_cryptolocker.exe

  • Size

    56KB

  • MD5

    0f3acc4a58b9240588224e7d55d0bf1c

  • SHA1

    54869ccb7c4793aacdea352d91376a78e6653cdf

  • SHA256

    0295268340e502250ddbf6ee554d22572ce699a9937412eb9f2f4fbc734c7ae7

  • SHA512

    3bdb2b0ca1012aeb45ffe88419de6c6775d4016cca4a7c3cfd475d13bfc66453015a3750d5ae065fc6cf7662eaa186ef12f41d43921f7e253eeb4b6d0ec21ab5

  • SSDEEP

    1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHK:btng54SMLr+/AO/kIhfoKMHdH

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-02-13_0f3acc4a58b9240588224e7d55d0bf1c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_0f3acc4a58b9240588224e7d55d0bf1c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3996
    • C:\Users\Admin\AppData\Local\Temp\gewos.exe
      "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    1e1657cabc18203a2c01bc89c559b095

    SHA1

    6879855f4a5e4512d80c69c095b455706ddc3a76

    SHA256

    332cf42193e454f3917fd70216e31e5553837fe45f775868cb2a1a73d6f02020

    SHA512

    12a6e3ea85ffb48c6caee81dee2a66bdac3cb068a7186c4c73566a4c4ace7bb46b8c932dbd873b77b29cac6268f41f6d97a2386e5a18753da77901aeaec75564

  • memory/3036-23-0x0000000002160000-0x0000000002166000-memory.dmp

    Filesize

    24KB

  • memory/3996-0-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/3996-1-0x0000000002150000-0x0000000002156000-memory.dmp

    Filesize

    24KB

  • memory/3996-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB