Analysis

  • max time kernel
    147s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-04-2024 05:32

General

  • Target

    2024-04-06_6acf628a0f36a6c02c2e0ac81685183a_cryptolocker.exe

  • Size

    66KB

  • MD5

    6acf628a0f36a6c02c2e0ac81685183a

  • SHA1

    dcdbe56894281c66268309046c04b9055e90d818

  • SHA256

    bd16d914b86847d7f58f3e0e0bd00f2a9d58cfadb32ee80529fe23868946291c

  • SHA512

    67ceb2806d5a8ee19e5f5a6f484a1541dd378553504ef9b91d69d7d3ecf04a19c22c9e2c41f1f30c7558c37139ca14a4564b46791393ae87ad7014870652e953

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEpE0P/xDQxc:6j+1NMOtEvwDpjr8ox8UDEpN/Gm

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 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-06_6acf628a0f36a6c02c2e0ac81685183a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-06_6acf628a0f36a6c02c2e0ac81685183a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:892
    • 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:2704

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    66KB

    MD5

    2760f48204e22e63bebe42b03d06147e

    SHA1

    8c7ef0a37faae575eff38ed712bacde340b135fb

    SHA256

    cb0a7968cae64a893d5fa84020791c12d1c12e0a6f40bef2de95cf89d1f03779

    SHA512

    c6df60c16089d6d59c43901ed28e79fbfe738e3b1f9465ef4d09a81cc3050bef3108bd5a9a8128e688ce5250a75a3301dc93b3b28a3d1003d17e8c4d947825e8

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/892-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/892-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/892-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB

  • memory/892-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/892-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2704-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2704-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2704-48-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB