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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/02/2024, 08:06

General

  • Target

    2024-02-14_a5eee7bbabd3cd43dd761e06b99e9cfe_cryptolocker.exe

  • Size

    48KB

  • MD5

    a5eee7bbabd3cd43dd761e06b99e9cfe

  • SHA1

    d3b80a1d2420b113357feb30a7c2d20f4f812e2e

  • SHA256

    4820e5d62b12d843bd8718015bf3effb8f45b90c19128f546d99e27639e21d01

  • SHA512

    4f6b7dcd0facf1424f013456c3a02cf781efe10d4a326512894bddf65c17e13ffd9e32b6724ab1afa8105e62bcb002cc0fcaa435b3154a1a121daa38f1a9d943

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNfW:V6a+pOtEvwDpjt

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\2024-02-14_a5eee7bbabd3cd43dd761e06b99e9cfe_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-14_a5eee7bbabd3cd43dd761e06b99e9cfe_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1616
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3152

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    bee4463c98c3ebeba351988de64f4b3b

    SHA1

    c1b0fc2346afa01bd842c167db60da6fa8a7f9e8

    SHA256

    81e213e3cb09c8eec58a7612fd3b9db6b872e768546119f318b4db0eab784066

    SHA512

    0fd9748ab296ee99ef8f9af7c1bf4027370a81a959828f8f5b828788865cc09d7c54dce6ffe21c0ae45c3799419c7a9b71639b4da4f7e721682ee63c9488f9ad

  • memory/1616-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/1616-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

    Filesize

    24KB

  • memory/1616-2-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/3152-17-0x0000000002110000-0x0000000002116000-memory.dmp

    Filesize

    24KB

  • memory/3152-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

    Filesize

    24KB