Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/09/2024, 03:51

General

  • Target

    2024-09-10_40d889427c3db5dcf479378dcac954c9_cobalt-strike_ryuk.exe

  • Size

    951KB

  • MD5

    40d889427c3db5dcf479378dcac954c9

  • SHA1

    e60fe132d8ddffd242f794b3ebbe2f8ab04824ff

  • SHA256

    030405f03e9152882d7a480cd4af1ae1e60ab5e10a010c4ac98bad7d8b9c05b4

  • SHA512

    97f2b968621647ca5de8ff99e321f8a3620a808e6b5af0085274a53ec1bbc6310ee7808e4b4f4d831bb18a7c3e78c8fd242f9aa9a276a5d3ac9070f32d7ed862

  • SSDEEP

    12288:4QwwPAuxstPiXhK3WX89QLkTtgoYfZFV8BxNDCDZc5bP+MZQFVFmh/Z/4ANyB0:4QKuxst/3WugoBNGD9MaNB

Malware Config

Extracted

Family

cobaltstrike

C2

http://124.222.72.51:4433/fl9R

Attributes
  • user_agent

    User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; FunWebProducts; IE0006_ver1;EN_GB)

Signatures

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-10_40d889427c3db5dcf479378dcac954c9_cobalt-strike_ryuk.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-10_40d889427c3db5dcf479378dcac954c9_cobalt-strike_ryuk.exe"
    1⤵
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2272
    • C:\Windows\System32\nslookup.exe
      "C:\Windows\System32\nslookup.exe"
      2⤵
        PID:444
    • 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 --field-trial-handle=4376,i,11708048364682646792,608099842549576907,262144 --variations-seed-version --mojo-platform-channel-handle=4088 /prefetch:8
      1⤵
        PID:4864

      Network

      MITRE ATT&CK Matrix

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/444-0-0x0000029453A40000-0x0000029453A41000-memory.dmp

        Filesize

        4KB