Analysis

  • max time kernel
    129s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/05/2024, 02:27

General

  • Target

    2024-05-28_1b8906cca19c865b21fb470738e58e58_cryptolocker.exe

  • Size

    38KB

  • MD5

    1b8906cca19c865b21fb470738e58e58

  • SHA1

    67e3852c80345e0891e9138720d73ac45de6f4f5

  • SHA256

    8d25d950cb7ce125cbe64d57895db542e1788e024e57d583fca2b91b552c5c4a

  • SHA512

    21f7248e1443fa5ccbe356e93e157c886f70246965ddee74feb1577d0ef964f9f05cd304fef536703287411499ad7274ac81eec875ee1138dc88dfd6c836f256

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4XM:fT+hsMQMOtEvwDpjoIHXM

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-05-28_1b8906cca19c865b21fb470738e58e58_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_1b8906cca19c865b21fb470738e58e58_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2120
    • 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:2656

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    d461afc91ed0e985ea5ca417f0df0565

    SHA1

    248ba8214b3a0a0d08aa531f0e682c5145723b16

    SHA256

    8d5e0fdc5f90f0ceae2d783068080cfedd85c234f6b7aa0546b8000b24c3703d

    SHA512

    97b1c5aad786fcdd9d54752c35d37d8e60ba7a5275eac76a1a838aee5f790103009c8a094ee2eebd93184d9fab84889dc7f61fa630bb6f97235cfe84c368bd5f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2120-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2120-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2120-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2656-17-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB