Analysis

  • max time kernel
    139s
  • max time network
    131s
  • 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 02:51

General

  • Target

    2024-05-22_d0a8de91371cdaca5aae932ea05893de_cryptolocker.exe

  • Size

    44KB

  • MD5

    d0a8de91371cdaca5aae932ea05893de

  • SHA1

    56f45d7c55b53fe5c755ba41fb937d9eca85966c

  • SHA256

    50341e31fc9361f084e6624ae80dd7deb78c55c06ffec4b6f27f3640db3f1b34

  • SHA512

    6c2a925749f129681f273f7060cb70ab295628289efe9f759ce402d5b339a2ebe0419a88048dd6ab43afa5f3ba5162fc53e14f248c9e02802985f6f9e3dc36be

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/aMDR:6j+1NMOtEvwDpjrRrd

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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_d0a8de91371cdaca5aae932ea05893de_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_d0a8de91371cdaca5aae932ea05893de_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4552
    • 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:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    0a0fece5f457dd8b5a6ffba547cf7072

    SHA1

    6f7b6bf0b0596851b17d0d7356016e4ee99439a5

    SHA256

    13561466c449451df0efca4b614882a8c19aa9ab682ed87ad97cc47b36956e52

    SHA512

    9a95c0cf8157dd88f6f7c9196024d621774a859b34c154f9c47199feaf06b317e13286603789b874fe81418391816611f931d78bfd3070654104dfeadceb6a18

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/3000-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3000-20-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/3000-26-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/3000-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4552-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/4552-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4552-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4552-9-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4552-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB