Resubmissions

28-12-2022 04:43

221228-fcc2vahe25 10

28-12-2022 04:38

221228-e9fcsshd94 10

Analysis

  • max time kernel
    150s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-12-2022 04:38

General

  • Target

    7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe

  • Size

    568KB

  • MD5

    62d82f1dfb55dde5554c8b278a819ac9

  • SHA1

    01e84f817807005f8d557d5320ddf9c366486620

  • SHA256

    7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc

  • SHA512

    e1e629f928a1596325af166a50248794d0a4c8129442b25dd514a5ec6e9eef39c1d8867db6f85a72ffd3f0aa349c28af7ff70dd58027f8a04e15a8cb491a1d54

  • SSDEEP

    12288:M3Ih6jMEb6Qyxao8Fhyq+rqSAl4zXh2J3Fi7mX/IkQkk36EZd/gnS9ZviI:W9Jb6Q28Fu9AvPI2k71fB

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5373590229:AAH5_bJ0JuiFbSG6WQwntRz245ybC0mPk0/sendMessage?chat_id=2005009509

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • StormKitty

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

  • StormKitty payload 1 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 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe
    "C:\Users\Admin\AppData\Local\Temp\7b968e65480e574dbf93ace25a28a30ca1f7b77fa98aabe980435484c365efbc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4892
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "{path}"
      2⤵
        PID:3468
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "{path}"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3640
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
          3⤵
          • Accesses Microsoft Outlook profiles
          • Checks processor information in registry
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:3920

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3640-148-0x0000000000400000-0x0000000000423000-memory.dmp

      Filesize

      140KB

    • memory/3640-146-0x0000000000400000-0x0000000000423000-memory.dmp

      Filesize

      140KB

    • memory/3640-141-0x0000000000400000-0x0000000000423000-memory.dmp

      Filesize

      140KB

    • memory/3640-139-0x0000000000400000-0x0000000000423000-memory.dmp

      Filesize

      140KB

    • memory/3920-145-0x0000000000760000-0x000000000077A000-memory.dmp

      Filesize

      104KB

    • memory/3920-147-0x0000000004C00000-0x0000000004C66000-memory.dmp

      Filesize

      408KB

    • memory/4892-136-0x00000000054E0000-0x00000000054EA000-memory.dmp

      Filesize

      40KB

    • memory/4892-135-0x00000000055C0000-0x000000000565C000-memory.dmp

      Filesize

      624KB

    • memory/4892-132-0x0000000000BE0000-0x0000000000C74000-memory.dmp

      Filesize

      592KB

    • memory/4892-134-0x0000000005520000-0x00000000055B2000-memory.dmp

      Filesize

      584KB

    • memory/4892-133-0x0000000005A30000-0x0000000005FD4000-memory.dmp

      Filesize

      5.6MB