Analysis

  • max time kernel
    93s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2024 23:51

General

  • Target

    2024-05-30_56283cec4b551c365d20cb6b974cf26c_cryptolocker.exe

  • Size

    65KB

  • MD5

    56283cec4b551c365d20cb6b974cf26c

  • SHA1

    b74588468a974dc99f1a89a598b2b292edd97a87

  • SHA256

    0b6be9baf72ab6c473638f12ee90b31647385ac856c8b4c1b2853e8d35037d65

  • SHA512

    cd38a6d5f11c6e3f4b80457657ad7bbac839bd00ee88cf10cfe3f7b0cfdf96f77b556b26077b50790ad3e40aac53a3bf5f0138fa5180d79c7386a9b2c599eee0

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzYr:TCjsIOtEvwDpj5HE/OUHnSM0

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).

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-30_56283cec4b551c365d20cb6b974cf26c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-30_56283cec4b551c365d20cb6b974cf26c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4760
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    4daf3b844357e5bb83a15168fbb5b665

    SHA1

    ad967985a10897c83216998d5ebdd0cb533294ba

    SHA256

    a504d7c4267a9acc3ae9b6435d3e46da7e47bd74e615b7ac7efa6850381776ca

    SHA512

    519bd8f3cef51c9a2d2b87c4c0195ee985fc0deee5378148172aa8a36cda7bfe08fb807adeb2e69bd6479108490e8f1096314c80ffdead9210fa5d008d336134

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2636-16-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/2636-20-0x0000000000650000-0x0000000000656000-memory.dmp

    Filesize

    24KB

  • memory/2636-26-0x0000000000630000-0x0000000000636000-memory.dmp

    Filesize

    24KB

  • memory/2636-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4760-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4760-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/4760-2-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4760-9-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/4760-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB