Analysis

  • max time kernel
    135s
  • 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
    01/06/2024, 18:26

General

  • Target

    2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe

  • Size

    69KB

  • MD5

    591e76dd1f35231887a39966c2148fb9

  • SHA1

    5b032aa85c8a2e3f3c5c2629e8cd896d9e8c5235

  • SHA256

    09d5aa573e53136fb60dbd62bf242901248d694afc52ab4c5105f685e7044c4f

  • SHA512

    c1e62dec0aaed3d97081bc809e899c2d301f8ee32ae0d1cbd28f49caa88676371fffc2194f01f158ffab4a2c8e2863086e8969f3b607c41e9e83b8d0ce49d696

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/dh:i5nkFGMOtEvwDpjNbwQEI8UZD7

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\2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-01_591e76dd1f35231887a39966c2148fb9_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4820
    • 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:2332

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    69KB

    MD5

    f4f111462cc682d01cbf2d22d5f641d5

    SHA1

    e3b4941cd3de94d8669de343416e1771bc9cbf34

    SHA256

    3743c1c52d6db73fc1cabd463faffec1900f97069ac53719da11c18c0b2b7534

    SHA512

    22db08692e08e027e8a3bb1f89fe14e09a5e07f01082b3be8c6566328e90a59edcbf1468273c6861101796ed4f668c352bfa526514dd8377bf9538924bb3c046

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2332-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2332-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2332-50-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4820-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4820-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4820-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4820-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4820-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB