Analysis

  • max time kernel
    87s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-02-2024 21:02

General

  • Target

    2024-02-01_3a9cbf10d38e01f108bc57af9cecd32a_cryptolocker.exe

  • Size

    80KB

  • MD5

    3a9cbf10d38e01f108bc57af9cecd32a

  • SHA1

    109fff8f2850de9998e8a417bdb9816ae115cc33

  • SHA256

    a0f44f7255c1c96ee4f5ce855f3825b639340815e8debd64603121354ccd41b6

  • SHA512

    1023768150d4b3526da0226cff7ba522ee285d305cedc870a7dbb1d098a7391a31d58ad4cb58da5240f11c452b1971d08bd9c917fa31823ce9cd9c019209e68e

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMM9:TCjsIOtEvwDpj5HE/OUHnSMj

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-02-01_3a9cbf10d38e01f108bc57af9cecd32a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-01_3a9cbf10d38e01f108bc57af9cecd32a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:976
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    3780e3b2810a0513e9b77a965cbacd28

    SHA1

    eae9d4dbaebf29d18e297258059435c4cba931c5

    SHA256

    6500452c5bec4362396181269b9c1e49528ba74a7c135b98c5945f05c906d6c2

    SHA512

    4ac77601ee39d43f8a14a8bcc7d32832eb8c9d7468c07d033901dcb48f3a3ae2d41f1cb01f5aff260e1515a9e4c0712f0378fc3fe28130251d1c26db3f19dce8

  • memory/800-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/800-20-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/800-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/800-55-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/976-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/976-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/976-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/976-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/976-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB