Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/07/2026, 00:58

General

  • Target
    Stub.exe
  • Size 421KB
  • Sample260730-bbrrdswdmb
  • SHA256 184d8005b6ad5eee22a0499fdabb82c5ad46a6bbe92e2fad605e584be60d7a55
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: StormKitty

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

  • StormKitty payload 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops desktop.ini file(s) 2 IoCs
  • Looks up external IP address via web service 1 TTPs 2 IoCs

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

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Stub.exe
    "C:\Users\Admin\AppData\Local\Temp\Stub.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • Drops desktop.ini file(s)
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • outlook_office_path
    • outlook_win_path
    PID:2488
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2488 -s 2536
      2⤵
      • Program crash
      PID:4232
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2488 -ip 2488
    1⤵
      PID:4772

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Process.txt

          • Path C:\Users\Admin\AppData\Roaming\EPSYDAFZ\Process.txt
          • Size 4KB
          • SHA256 c5be8ffb8703d1fb67a93f8d1d2bd1a0586a3c16ab4d0f52fb8a2a3b6b4b3f84
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2488-0-0x0000000000420000-0x0000000000490000-memory.dmp

          memory/2488-1-0x0000000002960000-0x0000000002970000-memory.dmp

          memory/2488-2-0x0000000004E40000-0x0000000004EA6000-memory.dmp

          memory/2488-20-0x00000000053D0000-0x0000000005462000-memory.dmp

          memory/2488-21-0x00000000063C0000-0x0000000006964000-memory.dmp

          memory/2488-113-0x0000000002960000-0x0000000002970000-memory.dmp