Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-10-2022 08:00

General

  • Target

    Transferir copia.exe

  • Size

    644KB

  • MD5

    2291920ad0a80650cba8a6d8e62fca40

  • SHA1

    f2f42f00f1c9337636f9615e0eebd38d86b46f14

  • SHA256

    af0c49cd5e2b41f27d460deb736e47c58009be3fcef52c8720926a0a6bdfc103

  • SHA512

    2c793123997b31f7ae8b94d4ffbb8d8e2fffbbd35da0f8f0b6f5e1c326a71cd0e4431c276ff2fc470f2f77d57343259f6b07036a2c6a0319958416ae53470245

  • SSDEEP

    12288:D+cPxGu+EjNjdUeJ2IZWAtb5xgtk5Atl3vF9uMW9e3fdn:HGzExjOejXxYkKdN9ck1n

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5627356603:AAG-Mx0TbSHRRW6IwndrpX3VLZdhd6C-Zac/sendMessage?chat_id=5472437377

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
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • 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\Transferir copia.exe
    "C:\Users\Admin\AppData\Local\Temp\Transferir copia.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4820
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
        PID:2216
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4192
        • 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:2732

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2732-142-0x0000000000500000-0x000000000051A000-memory.dmp

      Filesize

      104KB

    • memory/2732-143-0x00000000049E0000-0x0000000004A46000-memory.dmp

      Filesize

      408KB

    • memory/2732-144-0x0000000005410000-0x00000000054AC000-memory.dmp

      Filesize

      624KB

    • memory/4192-135-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4192-137-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4192-140-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4192-145-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4820-132-0x00000000000A0000-0x0000000000146000-memory.dmp

      Filesize

      664KB