Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-04-2024 06:31

General

  • Target

    2024-04-30_6b8595e4b5b3c7b72794ce61f4aa1944_cryptolocker.exe

  • Size

    42KB

  • MD5

    6b8595e4b5b3c7b72794ce61f4aa1944

  • SHA1

    ce6782b6cb6d30812ce2e12e1e50c8486be991c5

  • SHA256

    d08ee97adf4b0323660b5948cfa9209c59946f9c1f9af6b7af7d0d7e0735657c

  • SHA512

    e36991089b16d949a78b0e07575322d064002564f580ce6ac7e10fe6058ae2d313ea8389ff1a91542931f6e7c0c92cb07a485047ce1dbaee511eb1f9c9faf827

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabM07:6j+1NMOtEvwDpjrR2XabMQ

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 6 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-30_6b8595e4b5b3c7b72794ce61f4aa1944_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_6b8595e4b5b3c7b72794ce61f4aa1944_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1444
    • 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:4320

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    42KB

    MD5

    8d62336e5bfb81de4c6c97a374cc9a65

    SHA1

    b879d32b24010707a801d03a633d6abd619998cd

    SHA256

    847f494006b9cf6050aa87539c9076144bf8f839672e069eaa945c0e95979d35

    SHA512

    29dc43fb111a49ed0a770616ff1d48dc3b2046cd80ee9a9471ecf1b830cabe947439b958f588fb4d8413e6a549dfb85db4e7cf15ede67cc98459a20f2e6595dc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1444-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1444-2-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/1444-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1444-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4320-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4320-20-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4320-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4320-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB