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Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/03/2024, 04:50

General

  • Target

    2024-03-16_e58124774d878da59a1ef42449affd26_cryptolocker.exe

  • Size

    102KB

  • MD5

    e58124774d878da59a1ef42449affd26

  • SHA1

    2a1d402168cf5ff286fef8d419c827c58b7b7b07

  • SHA256

    e12f1bb8363583ae4f2d37cb99d3d003a490d748cdef784a244654c34462bbba

  • SHA512

    40b39ec25e7adbf9914f1af25411193c0c15442124434518f79da23266ff32c44ed2a0e5f06608741dad84a1358796d54112a368d1bcf441a271da074d8ed181

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2mwVea:xj+VGMOtEvwDpjubwQEIiVmkxv/Ca

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\2024-03-16_e58124774d878da59a1ef42449affd26_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-16_e58124774d878da59a1ef42449affd26_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3208
    • 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:1656

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    102KB

    MD5

    2add7e833be9f0f62492d61e08b4a7db

    SHA1

    3ab7518cff0a622352bc8a8a483a261acdf342ce

    SHA256

    47c0494fc6a8075adb2e8394fef3aa5babaf61a5780b8de4d1ae6ce57cb4d62b

    SHA512

    37771879d484a7228a8bab9348eec59c2e34f3d9eba12dbc6044e9a557aafe9b55014ef2cdf03695761060d34d160d8ef61049113dbe621b8e2aaa288bd3c04f

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1656-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1656-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1656-48-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3208-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3208-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3208-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3208-3-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3208-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB