Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2024, 12:50

General

  • Target
    b770f555a2ea72bd21694e8f12d39bfa.exe
  • Size 65KB
  • Sample240306-p29lsacc43
  • SHA256 b4331f0e682f64105ac6a3fe724e07f86e5bc2e1e727ad8c616e6dee654e9388
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • cobaltstrike

C2
  • http://thecapo-42980.portmap.host:42980/jquery-3.3.2.slim.min.js

Attributes
  • user_agent

    Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Referer: http://code.jquery.com/ Accept-Encoding: gzip, deflate User-Agent: Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b770f555a2ea72bd21694e8f12d39bfa.exe
    "C:\Users\Admin\AppData\Local\Temp\b770f555a2ea72bd21694e8f12d39bfa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Windows\SYSTEM32\rundll32.exe
      rundll32.exe
      2⤵
        PID:4320
    • 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 --mojo-platform-channel-handle=3704 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:4712

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            memory/3428-0-0x0000000000370000-0x0000000000384000-memory.dmp

            memory/3428-1-0x00007FFCA2B00000-0x00007FFCA35C1000-memory.dmp

            memory/3428-2-0x0000000000B60000-0x0000000000B63000-memory.dmp

            memory/3428-3-0x0000000180000000-0x0000000180006000-memory.dmp

            memory/3428-7-0x0000000000B60000-0x0000000000B63000-memory.dmp

            memory/3428-11-0x00007FFCA2B00000-0x00007FFCA35C1000-memory.dmp

            memory/4320-10-0x000001CD1BF20000-0x000001CD1BF21000-memory.dmp