Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2024, 06:51

General

  • Target
    RobloxPlayerLauncher.exe
  • Size 9.9MB
  • Sample241022-hmf8csvdkj
  • SHA256 25193a2af45b78c79136888748092d592a152f73c4805797f2d126b49d0fca8e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • skuld

C2
  • https://discord.com/api/webhooks/1297050065504047176/JtiObjk6yoWN5vIB4pnq2_TS1V3sF6nkfTv-FZCExVxzGYgKn6iFvuGtYs2QnO8K_8pk

Signatures

  • Skuld stealer

    An info stealer written in Go lang.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RobloxPlayerLauncher.exe
    "C:\Users\Admin\AppData\Local\Temp\RobloxPlayerLauncher.exe"
    1⤵
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1404
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\RobloxPlayerLauncher.exe
      2⤵
      • Views/modifies file attributes
      PID:2944
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
      2⤵
      • Views/modifies file attributes
      PID:4368
    • C:\Windows\System32\Wbem\wmic.exe
      wmic csproduct get UUID
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1812

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        SecurityHealthSystray.exe

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
        • Size 9.9MB
        • SHA256 25193a2af45b78c79136888748092d592a152f73c4805797f2d126b49d0fca8e
        • MD5 SHA1 SHA512 SSDEEP