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
    08-06-2024 23:31

General

  • Target

    2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe

  • Size

    65KB

  • MD5

    b95533c1bede604f8df9e48e96a04812

  • SHA1

    33b2b6a9f851a6f6d79b81cab28af14b6e4f6d49

  • SHA256

    18b33d3d4351adb75415e8e722ad14358333b4cf0de1d2ace53524b8e232b3b2

  • SHA512

    ecab842b7400655a89167f80c9f9ef7056c49c906192f8379b81455a360d62ac8d2898a22635ce9981a3f7e5ed68d2b46734f5bb06e6553f961a787b7f5e94d2

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsig:BbdDmjr+OtEvwDpjM85

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-08_b95533c1bede604f8df9e48e96a04812_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:5008
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3120

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    65KB

    MD5

    edbbff039ba098da4dcd8b1cb10bf6de

    SHA1

    a78be51266f0d1c4ad88ba6405960e9e6890160e

    SHA256

    a450a9ff3c8701f4403bc361b15bce6cc32c20796ce6045b518c45532d15586a

    SHA512

    03bfbb095adea6f03a98e120c30db2e53b991437285e468b46c57e4864f53e25ee502cec37849f1f6f68e0faf993e2222ccabc9c07e1abb89f0ba62f3c62bd56

  • memory/3120-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3120-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3120-27-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3120-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5008-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/5008-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/5008-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/5008-9-0x00000000020E0000-0x00000000020E6000-memory.dmp

    Filesize

    24KB

  • memory/5008-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB