Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 04:38

General

  • Target
    2024-06-10_1919babdd13e7946899294d8b5718ba2_cryptolocker.exe
  • Size 75KB
  • Sample240610-e9w1jscg99
  • SHA256 9c70e07e47b6adbed6d7a15793e9df12bc9f628dbe6820da8e8af829fd1f2e0b
  • MD5 SHA1 SHA512 SSDEEP
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\2024-06-10_1919babdd13e7946899294d8b5718ba2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_1919babdd13e7946899294d8b5718ba2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3012

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        asih.exe

        • Path C:\Users\Admin\AppData\Local\Temp\asih.exe
        • Size 75KB
        • SHA256 8e6470c0e48b3a3f43e55cd21ac7c4d0fc11b058204e30bcfd0f47368de09161
        • MD5 SHA1 SHA512 SSDEEP

        memory/2820-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/2820-1-0x00000000006C0000-0x00000000006C6000-memory.dmp

        memory/2820-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

        memory/3012-17-0x00000000006B0000-0x00000000006B6000-memory.dmp

        memory/3012-18-0x00000000006D0000-0x00000000006D6000-memory.dmp