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Analysis

  • max time kernel
    161s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/03/2024, 20:34

General

  • Target

    2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe

  • Size

    87KB

  • MD5

    73563319660481bd66bca2cd855ce9d1

  • SHA1

    ccc6978dcab79b2072b94d8d09b5e723e8cf1a80

  • SHA256

    0b75ab57a9dc0e397ff2cce783cb8628ff68a9a241978598d4a85098b3bda5e2

  • SHA512

    a8eddc33f957bcec37a438feddac51028601b7f5f321796809e7eb1460ca61de292d32c3904346ba510762d6f5baf9a3c4a3cad7151fa9e75b58de3dd4c6001c

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvxgn3:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8y3

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1512
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:1056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    87KB

    MD5

    f80079a811c7735e8a02afad74bfb95d

    SHA1

    3da1afa90d08a48a58a1b68b37f8416a7d91c190

    SHA256

    e73492efc471787e19f16db8d2e31251564278293820685396faed49b57f14a5

    SHA512

    fcc3f7c7eefbd989745dac15b5b019ea60cf38c5ef7ef920f508cb4568e0507c274887895138696fbf24f03ee81f17be3be08d521b0884d311f79266da3133e3

  • memory/1056-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/1056-22-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1512-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1512-1-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/1512-2-0x0000000002210000-0x0000000002216000-memory.dmp

    Filesize

    24KB

  • memory/1512-3-0x0000000002240000-0x0000000002246000-memory.dmp

    Filesize

    24KB

  • memory/1512-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB