Analysis

  • max time kernel
    142s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/05/2024, 02:44

General

  • Target
    2024-05-31_6f2fbadc6b72579509e1ccbeda6f6689_cobalt-strike_cobaltstrike_xmrig.exe
  • Size 10.8MB
  • Sample240531-c75hssde63
  • SHA256 e25e88acf15509471692104526f99188dfcfb043dc77980eb57a408d267ce841
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Cobalt Strike reflective loader 1 IoCs

    Detects the reflective loader used by Cobalt Strike.

  • Cobaltstrike

    Detected malicious payload which is part of Cobaltstrike.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Detects Reflective DLL injection artifacts 1 IoCs
  • Detects executables containing URLs to raw contents of a Github gist 7 IoCs
  • XMRig Miner payload 7 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
  • Drops autorun.inf file 1 TTPs 3 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 64 IoCs
  • Modifies system certificate store 2 TTPs 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-31_6f2fbadc6b72579509e1ccbeda6f6689_cobalt-strike_cobaltstrike_xmrig.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-31_6f2fbadc6b72579509e1ccbeda6f6689_cobalt-strike_cobaltstrike_xmrig.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops autorun.inf file
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    PID:4288
  • 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=4252,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4612 /prefetch:8
    1⤵
      PID:4996

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          7-zip32.dll

          • Path C:\Program Files\7-Zip\7-zip32.dll
          • Size 11.0MB
          • SHA256 a4a0f2b7a49330fa03916221c10f578fd3e614b49a89c84cbab039aec55ccca6
          • MD5 SHA1 SHA512 SSDEEP

          070E0202839D9D67350CD2613E78E416

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\070E0202839D9D67350CD2613E78E416
          • Size 1KB
          • SHA256 d73494e3446b02167573b3cde3ae1c8584ac26e15e45ac3ec0326708425d90fb
          • MD5 SHA1 SHA512

          memory/4288-1929-0x0000000000400000-0x00000000010B2000-memory.dmp

          memory/4288-363-0x0000000000400000-0x00000000010B2000-memory.dmp

          memory/4288-931-0x0000000000400000-0x00000000010B2000-memory.dmp

          memory/4288-1443-0x0000000000400000-0x00000000010B2000-memory.dmp

          memory/4288-0-0x00000000001E0000-0x00000000001F0000-memory.dmp

          memory/4288-2136-0x0000000000400000-0x00000000010B2000-memory.dmp

          memory/4288-2228-0x0000000000060000-0x0000000000062000-memory.dmp

          memory/4288-2232-0x00000000001F0000-0x0000000000200000-memory.dmp

          memory/4288-2234-0x00000000059B0000-0x00000000059B1000-memory.dmp

          memory/4288-2235-0x0000000000401000-0x0000000000A18000-memory.dmp

          memory/4288-2236-0x0000000000400000-0x00000000010B2000-memory.dmp