Analysis

  • max time kernel
    134s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-05-2024 06:31

General

  • Target

    2024-05-29_4374c285268704d96171cb86939f3640_cryptolocker.exe

  • Size

    68KB

  • MD5

    4374c285268704d96171cb86939f3640

  • SHA1

    f32c4440195f61452e144dbf1e9ccda8e915d9f5

  • SHA256

    b31f7bb832304a7bc8837eb6aeb74b9e53c078caf737f68279ac89fbabea4fec

  • SHA512

    0cffbf038ae5a91ab5be2aaf346bd6b4e33da5a9f99f60dba3dd88a62918856a26a45bb798f4e0f5187de400a53c14ca248689f5a4b7f8a9d21b5507d35db435

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFIa:6j+1NMOtEvwDpjr8ox8UDEpN/jr

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-29_4374c285268704d96171cb86939f3640_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_4374c285268704d96171cb86939f3640_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:468
    • 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:1704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    072ea101c7cd04584c2b8f28c7b7f1cc

    SHA1

    cbad92e9289d2d00c7505b9f89ad42f01a7a3203

    SHA256

    0c4dde1e5176089655b0cbce676664f5cfe09a911d41b81f792b82316d9ae634

    SHA512

    23dcc1fdeeed368841be46e20645cdba34c64b862a01d33b6326b3d77fbe65109d33852662c9f33721a8e0eddd45c7b3b987249ef125caa65f91ddb0fe4a7424

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/468-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/468-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/468-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/468-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/468-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1704-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1704-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB