Analysis

  • max time kernel
    134s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 23:23

General

  • Target

    2024-05-22_3a1e9ac1be4c43bfd80cbcf136c94944_cryptolocker.exe

  • Size

    68KB

  • MD5

    3a1e9ac1be4c43bfd80cbcf136c94944

  • SHA1

    937fc03d410cbff66c3bd2da3ab481d0b2b6436e

  • SHA256

    c068b877c04922013b0e1448dfa9a992678b7aebb9c291a2ccd983d4eaea22b2

  • SHA512

    0b8024f5a3673b1e7022f6464d7b337b72d7c136a6eff2a1111d8660e464ff5e9fd9e4f9a94cee5c7fb704b57734cabe55063340e573ea4ced8f5f7017cf33c3

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xFI0:6j+1NMOtEvwDpjr8ox8UDEpN/jh

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 5 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_3a1e9ac1be4c43bfd80cbcf136c94944_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_3a1e9ac1be4c43bfd80cbcf136c94944_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2328
    • 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:928

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    68KB

    MD5

    206bc0c0c8a202099445c44d265a9cd7

    SHA1

    3e6b36ad3808133a49314285fe3c5d5e165fcfdd

    SHA256

    fb059a91ec506446b3781cd18ae2c700d1f94e304a87985ba4cab9b65b7a2997

    SHA512

    e343c1f5fe306411e9a2a6f6ccb7f133f06e82013b18448bf43cca94bf30fb9baef2c013fa82fc4d644056c6244a7fbb54fba71ab3ea222b8b7072787ba35451

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/928-19-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/928-25-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/928-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2328-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2328-1-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB

  • memory/2328-9-0x0000000001F50000-0x0000000001F56000-memory.dmp

    Filesize

    24KB

  • memory/2328-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/2328-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB