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Analysis

  • max time kernel
    143s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/02/2024, 10:37

General

  • Target

    2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe

  • Size

    60KB

  • MD5

    aac9890e46e0f6aa7580bbba5a5ee0b5

  • SHA1

    4db404abc9f3065a0b746eeb17f5ebda7fef5aba

  • SHA256

    ead8e3e9958652825e62446df553d7e99bd690b6873f4b4b77110f7ff6501f6a

  • SHA512

    e0c69f608444c519739ed0824ca51a82fc0275f7e3ab3da640543b79cae3b2a74ad760b0a38e2cda50d63d91dc9ed17dcce0c353578ad279d424a446dbd580d3

  • SSDEEP

    1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHu:btng54SMLr+/AO/kIhfoKMHdD

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\2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_aac9890e46e0f6aa7580bbba5a5ee0b5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1560
    • 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:4092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    bf7ec7a43c8ef2f5f9fdfeff181df7c2

    SHA1

    28fee08dd2dca994c436612207c2cc309c34aa89

    SHA256

    069a54e43cd2038be0e89508fac8b607f4f3bd504c45201112d751a804bc14e2

    SHA512

    23856eec5d7b040b28c969044fdd20f9b821d721eb409a2061085b94376256cb0a77945b890fd48dfc9012547cbf684c0934e0f06aa0dbdbbf3d8bcf70e5b9e0

  • memory/1560-0-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/1560-1-0x0000000002350000-0x0000000002356000-memory.dmp

    Filesize

    24KB

  • memory/1560-2-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/4092-21-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB