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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/05/2024, 13:24

General

  • Target

    2024-05-09_3e8ad8ef675de1909e3b39fb026a5aa5_cryptolocker.exe

  • Size

    47KB

  • MD5

    3e8ad8ef675de1909e3b39fb026a5aa5

  • SHA1

    e56f31363e2a80cbbc31b5c458e356ab70fde02a

  • SHA256

    316ac4407ce6ae88b49cbf00d9add8631e6ffb5dfc55e01cac73e39a1008c4f3

  • SHA512

    422bc3f0e0b41dd7a6475bc5268d5d6f02bfd3d675053c72f9c58b792db38537c19e9f34881afde6edf0be7f0ec906001f50104ddad48cbdbc210bcbf1ba6bea

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9Rva/yYsmt:xj+VGMOtEvwDpjy+viHsw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-05-09_3e8ad8ef675de1909e3b39fb026a5aa5_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_3e8ad8ef675de1909e3b39fb026a5aa5_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:412
    • 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:3660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    a75141be44cafd42e128e2537216d0a3

    SHA1

    6bb89248cc25a44b99a23903024d74441271a2b3

    SHA256

    f3df0af22815ec0202dc8e3e601e3a13627f3915f2bfb6b1bdc70cfdccdbc284

    SHA512

    ed31427701f22407e546b8abb58b0c32e8412e493471c86b791a723a1a0fc3b2f5009b71f40c853d2504f67b9c93bb4c31b6b7db75405207dc55c0bd8e3ba421

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/412-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/412-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/412-2-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/412-3-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/412-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3660-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3660-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/3660-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/3660-49-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB