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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2024, 12:34

General

  • Target

    2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe

  • Size

    60KB

  • MD5

    4ffdc9736ffaf21fae185069ae22f840

  • SHA1

    eb4a42df98c41f41601ce00e43c1e31db749f472

  • SHA256

    ff6c3ba44a85536e14d9a528421d2e512cb159c0102a2d84ad662c063128e678

  • SHA512

    bba849777abe4e85128e3f833528c783c1ae128bfffa98fa0ceb435957647dc2f489ee0c9893daa95f3a2473a73e64a1902adaabdec4818d020b49932ed4d3f1

  • SSDEEP

    768:3Uz7yVEhs9+Hs1SQtOOtEvwDpjO9+4hdCY8EQMjpi/Wpi3B3URiLqCyLuAx8XGP:3P+HsMQMOtEvwDpjoHy7B3g9CWuAxWM

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 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\2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-18_4ffdc9736ffaf21fae185069ae22f840_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2520

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    4a3956c5924c8f72ba1ad89d11a5e7f4

    SHA1

    88317e4d2fc98e6c3ef14b9813a82b81985b4dac

    SHA256

    9ad3225827ccc4c858d97fb73cbfea0776e26a6fbdc028627e3500003aa33c24

    SHA512

    7577126290717b1a0b072aeef0311ec7a3aa5acf354fa8fbd93dd2d46f73d910340adad8b67d1bbb28866a1cc76618c421517a4264882a743d013752b74f562f

  • memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/1228-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1228-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/1228-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2520-20-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/2520-19-0x0000000000550000-0x0000000000556000-memory.dmp

    Filesize

    24KB

  • memory/2520-26-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB