Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 02:33

General

  • Target

    2024-06-11_a3a9dd626a688327ca80c15d785ca282_cryptolocker.exe

  • Size

    47KB

  • MD5

    a3a9dd626a688327ca80c15d785ca282

  • SHA1

    f59b23609205260aa94f58077d432851787eb80a

  • SHA256

    7f4406ab86bc17d47f02ae640b5935358865109d4b8f2e5c67e5871c32582ca6

  • SHA512

    508f4e7c9fe1bfa0776c8348dde9311e048691b393b2bc797763538375ae471bdfc123ce3e447bf1fdd46e7dc1445d5a8fa96f141bca005f82c5b090b0fd2e06

  • SSDEEP

    768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsix:V6QFElP6n+gMQMOtEvwDpjyaYaFAh39x

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\2024-06-11_a3a9dd626a688327ca80c15d785ca282_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_a3a9dd626a688327ca80c15d785ca282_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:760
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=2700,i,14648456027158448592,4956305794400220180,262144 --variations-seed-version --mojo-platform-channel-handle=4136 /prefetch:8
    1⤵
      PID:2344

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            47KB

            MD5

            3f264bc0acae630d3487fd93adc95135

            SHA1

            4c162fc3fe599152d13d6b40cf3b442a4ff963d3

            SHA256

            aa321c7bb31c9450c2df8e87d1a3b1f1391fbdf5de55e21014ee9dcd371cd839

            SHA512

            3f28694fd09b9d4c0e5431c0ed3ab6cc26d2a0aafa5dffc493b3a0f9de39fb4bb6bf6199ba9c78a338ed1cfa43ed75bfa68709d59e0be760e9fae43a69b86bba

          • memory/760-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

            Filesize

            24KB

          • memory/760-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

            Filesize

            24KB

          • memory/4932-0-0x0000000002140000-0x0000000002146000-memory.dmp

            Filesize

            24KB

          • memory/4932-8-0x0000000002140000-0x0000000002146000-memory.dmp

            Filesize

            24KB

          • memory/4932-1-0x0000000002060000-0x0000000002066000-memory.dmp

            Filesize

            24KB