Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/05/2024, 16:01

General

  • Target

    2024-05-21_d7ee1bf17910d721ad5930ef7ec20ed2_cryptolocker.exe

  • Size

    48KB

  • MD5

    d7ee1bf17910d721ad5930ef7ec20ed2

  • SHA1

    4d07a957067e9dbb5d6c3f4051c9bf8cf7ec59ee

  • SHA256

    0dd4e73b9dab969dcb1a18730ce1d318dfcb178470e7f4e9c02b581149953fbd

  • SHA512

    e7ec01a5c40700fa8acdc43781c924691deb73a9da1a37b006c736b86f2499651d2d20e5b2193959e9a1a2f78933099c1598062d69318c84e917718362549785

  • SSDEEP

    384:icX+ni9VCr5nQI021q4VQBqURYp055TOtOOtEvwDpjqIGR/hHi7/OlI0G/BdmRSw:XS5nQJ24LR1bytOOtEvwDpjNbP/bm3

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-05-21_d7ee1bf17910d721ad5930ef7ec20ed2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-21_d7ee1bf17910d721ad5930ef7ec20ed2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4900
    • 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:3796

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    48KB

    MD5

    85a275ca7fee9d42063e13a2001edf8b

    SHA1

    fe845dc7c9e475729b705d82c8291c47fc55afa1

    SHA256

    2c5f5c1b3c3bef4fcba7d36299afd7e419e0345429e67bee7059c623675eaf09

    SHA512

    8151e641875d98680db3845969e859666394032d465ce445f2c372cba641c470e0c1c82842760e77130efdc226fbf3ee532339bea63147ae672c0efa1e8d86a3

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3796-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3796-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3796-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4900-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4900-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4900-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4900-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4900-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB