Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2024, 09:29

General

  • Target

    2024-02-23_1c47538afda14f5bf9573dd8608dd347_cryptolocker.exe

  • Size

    49KB

  • MD5

    1c47538afda14f5bf9573dd8608dd347

  • SHA1

    e04ad14f503348fe0ae49b79da923f733a35f305

  • SHA256

    a8f80e1fb84d44a77304d80dfb4a623f1fff31b8beb095f89ba5e887f4a76f37

  • SHA512

    460f9b6bc9407c89562890e47bcf99683d643edadc6ac32e175c38f7d5fa2734456361cd2529c6aa4948000bfc6fa38558401ed065eea1951e47809edcb680e8

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUvn:BbdDmjr+OtEvwDpjMXK

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 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\2024-02-23_1c47538afda14f5bf9573dd8608dd347_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-23_1c47538afda14f5bf9573dd8608dd347_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1804
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    49KB

    MD5

    5e2e710d40f59f96f96c8de12824c8aa

    SHA1

    08cfa6be414968b75e1344751a4b4f39c29f43dc

    SHA256

    5117dd790eacfb08146e046ef6091ecedb78f9af709d86a11736ccb4ac0b6093

    SHA512

    de943a48636eef210dd1467dc0d96ecfd67b64c73cf2aae702d3e51cfaafd140142394707c39b907adce47901c73b3949e5e2b394103c154f859fca0b86e9829

  • memory/1804-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1804-1-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1804-2-0x0000000000730000-0x0000000000736000-memory.dmp

    Filesize

    24KB

  • memory/1804-3-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/1804-21-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2424-19-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/2424-18-0x0000000002060000-0x0000000002066000-memory.dmp

    Filesize

    24KB

  • memory/2424-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB