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Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 20:27

General

  • Target

    2024-04-10_69acdd0fd75e6c5c6dbae19f58ee0f6d_cryptolocker.exe

  • Size

    41KB

  • MD5

    69acdd0fd75e6c5c6dbae19f58ee0f6d

  • SHA1

    1eaed23374e373d004b701f9ba6678342b54686a

  • SHA256

    cadef3502b6f8c4494a38d8c66eb02f6c90e33110edf26b74d5ceb03726cf2a7

  • SHA512

    4a5bca27d22a6aee1d7b98c41f0820e372c66917f543e88c12493858b8c52faf76b90b86d24223e97ee2578c50833d12de23fb5886792a284db0176859723e71

  • SSDEEP

    384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOOe:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/w

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 4 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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-10_69acdd0fd75e6c5c6dbae19f58ee0f6d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_69acdd0fd75e6c5c6dbae19f58ee0f6d_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1260
    • 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:3992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    8f5918713b6d2ae297cc6705c64a8bb2

    SHA1

    656e0fdbf57d81aa4faf346c2e135292f655cf34

    SHA256

    c80ca24d4b30c8dca1fa6551235f9489a6ced052ef37d2ce478201925d388f7d

    SHA512

    d47189ec52e2f079149c68ccdb5e30d3d7ea09abf403e0c0488f45404ca84cf14475347db0e0c83c8b1efafbcb0c07e646fb761f7d121e7fbfcc36f6ae87dcb3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1260-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1260-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1260-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1260-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/1260-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3992-19-0x00000000006E0000-0x00000000006E6000-memory.dmp

    Filesize

    24KB

  • memory/3992-21-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3992-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB