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Analysis

  • max time kernel
    142s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/01/2024, 08:45

General

  • Target

    2024-01-19_1522cc94106e8430c7dcdea02721ca8e_cryptolocker.exe

  • Size

    98KB

  • MD5

    1522cc94106e8430c7dcdea02721ca8e

  • SHA1

    0d11866877b5345bd935b48e6bafe78d05033ebd

  • SHA256

    27e9cd644f40a0b6e0c2f5334403336df50deb1a87ced11fda918f8cad902bb4

  • SHA512

    447f42ab320187103480391c3b59cd188d8406ca34cec948ffbe8d15a153144d1f8d42dc0c20a87633f2606049bfd55de2cbcc7a234ed0b8960c020e00585fe6

  • SSDEEP

    1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWw6fx:26a+2OtEvwDpjtzz

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\2024-01-19_1522cc94106e8430c7dcdea02721ca8e_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-19_1522cc94106e8430c7dcdea02721ca8e_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4848
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    98KB

    MD5

    d252e3af416bd40390026c31181b469d

    SHA1

    23bcde9100ed0cf1f874f162072f14cf8a463567

    SHA256

    d55df44d0e3a55066e965be703c44f917a149e7a183136f589f1952e6947c7aa

    SHA512

    6a00611428d1543f1371c8ac485b8c9da283eed26359b19cd6cd5ac59663f0cb2fed2e02a5063a4202d4b1312942152b1177d82d0ad9b914ed658063a20de388

  • memory/4848-0-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4848-1-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/4848-2-0x0000000002070000-0x0000000002076000-memory.dmp

    Filesize

    24KB