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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/05/2024, 03:52

General

  • Target

    2024-05-12_4e67ffdb1df57762b5b0228ea8f445e3_cryptolocker.exe

  • Size

    64KB

  • MD5

    4e67ffdb1df57762b5b0228ea8f445e3

  • SHA1

    49c5ce3dacec762142f29d05a024d5875c533721

  • SHA256

    8766e9c44a4130932b55dbc17d1f82d1a289f19ce07ccb0ff1a15458d6c8f584

  • SHA512

    ec302d6b57b6b62a6d6cdffaab5a843f3d0494c69230ce8cf783a37b001d787fb4cfc37f114609f1b2c79af452afe314a006136b25da6a3bc4f6fb5dd8ef3b0b

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsihG:BbdDmjr+OtEvwDpjM89

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 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\2024-05-12_4e67ffdb1df57762b5b0228ea8f445e3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-12_4e67ffdb1df57762b5b0228ea8f445e3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    42dfa6bef8f7c86f63da1e63895be7b5

    SHA1

    d72f94af6dcf1655b4ce908dbd5476ebf2c94be1

    SHA256

    473153e1f27d492fc089e199d4afb1bb64f2f38400673d00edd9fc25d360c07c

    SHA512

    0cabd0044490d965cb488e09f6097749a71828a2b0186dd9d8afe0770061e7a85a92f5a52e0bf1c2d8ee88ebdda7c50e342976208e0f2758655e2fc86c336d43

  • memory/980-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/980-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/980-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/980-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1448-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1448-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1448-2-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/1448-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/1448-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB