Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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 01:35

General

  • Target

    2024-05-22_1db7ed1064af0099eb2b72000532d254_cryptolocker.exe

  • Size

    69KB

  • MD5

    1db7ed1064af0099eb2b72000532d254

  • SHA1

    404f7d89ad5860349f9db735ac71ceec0c88f0b1

  • SHA256

    aee9e5782539a5240895b6dd201ea00847d576fea0bca7adf2659ecd078cd88b

  • SHA512

    202a1a5fde9c8ab2ff3ad82db1fcebc705e1d2cd179e5005a603b7f6feda36f6be97bb1dc9b9b2ad06bee7c4f0bc4d6eb4fb573088f4344c718c58f19750ec68

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/dE:i5nkFGMOtEvwDpjNbwQEI8UZDK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-05-22_1db7ed1064af0099eb2b72000532d254_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_1db7ed1064af0099eb2b72000532d254_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4764
    • 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:3160

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    24c73b952dd48342e3bfcab6195efdff

    SHA1

    f1540ec6581517dffb3c533e5f5ca2f895c4ed31

    SHA256

    91a59e041d51146b2df5c9202ef1ce3b90dc9f1519c90d12c5175d74de426878

    SHA512

    b8bc04c39164673474c6bbe601db5c6a4a2274d9da6cfed723dc88160110f410245e44b3f4adaab92bda23f7300cc9c2bd8d34254d2b5969184267ad6cf2a96e

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3160-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3160-22-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/3160-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3160-50-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4764-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4764-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4764-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4764-3-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4764-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB