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Analysis

  • max time kernel
    79s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    09/09/2022, 17:01

General

  • Target

    cuspule.exe

  • Size

    144KB

  • MD5

    cb51286b55d81634de24cdf0fa2bd358

  • SHA1

    af50caf6cc4ba374d63911031491fc846ce443db

  • SHA256

    16a775ae7240434e0563eeb9220c0fb4d2352251d4483d08d9d9678f2b743f1c

  • SHA512

    3450d5aa671164de9953f7dbfe17751619ce1bd20dd24f773d858d65e7f521e935c13da286f0a994dae91b64716339834cf8be560aad21c5a97c28a10adab47b

  • SSDEEP

    1536:fSV/Zws3kTnvzbhNBPmxue2SRQg0dkEwiqoViow8KLNH7auPyzjbuf:feZTkLfhjFSiO3omBNWuaz/m

Malware Config

Signatures

  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 4 IoCs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cuspule.exe
    "C:\Users\Admin\AppData\Local\Temp\cuspule.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:864
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      2⤵
      • Accesses Microsoft Outlook profiles
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:948

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/864-56-0x0000000075141000-0x0000000075143000-memory.dmp

    Filesize

    8KB

  • memory/948-57-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/948-59-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/948-62-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB

  • memory/948-64-0x0000000000090000-0x00000000000AA000-memory.dmp

    Filesize

    104KB