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Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/03/2024, 09:04

General

  • Target

    2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe

  • Size

    49KB

  • MD5

    e53f4409f64e3c26782de5ed9a02a6d0

  • SHA1

    2f69b014ae6b9c5e5b6e4d81d666a06e3b34fb00

  • SHA256

    7665a1ae50a76f310f05584024ec794ce43d92e3804365411667b71e0ff8098a

  • SHA512

    2779f7b663f294af5250b36b707e561dc9856e6b5318b05b8093c23e1ec59603713a2e55a969838af1e094d86e5db20b9054d91e4ee2af57f433cd700a8e9cb6

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNQ:V6a+pOtEvwDpjf

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:768
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4492

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    f1c6b23b059124fa2db311f9cbae7b3e

    SHA1

    dd462911fe589e66a49d48cfd3b86e7da850fe33

    SHA256

    f70bc5e6dead95ceca567922ee5c0346040e47431c7460524d56d93af55ca077

    SHA512

    eb85417e26a8c15659b14ad30d5ec05f05c81c23a0a7c1b55e0f63121591ff31fa7e6c75c60d17a94f0bf1232d7c2231b96988a12a4d5295ff0d7c51f1344c37

  • memory/768-0-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/768-1-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/768-2-0x0000000000680000-0x0000000000686000-memory.dmp

    Filesize

    24KB

  • memory/4492-17-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB

  • memory/4492-19-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB