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Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2023, 07:28

General

  • Target

    TRANSFERIR COPIA_26-01-2023.exe

  • Size

    124KB

  • MD5

    6b6158281be7a4c6d27c26a19584a506

  • SHA1

    642977b3de3a0d226859228dae11cb5d74ff0472

  • SHA256

    d7cd5ce46ffb8abe6ee2cb0c2a9f6528d8121fb90bd4072e71cd901099885eb3

  • SHA512

    ad9fda9a3a6f251f5bbfecf0a7b0aac322f9593e2ceca758aeaef42f651351ca0b77e346651f7b25cbfdb2d05b8fb1f7bb40e50bd7fbff78c4099c9905f8f506

  • SSDEEP

    3072:hzVvRQ0DOtiT3VLK8LEN7m8lneeF1eujsqk7jx++eH6:hpJpOtQON7m8de6okkB++eH

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_26-01-2023.exe
    "C:\Users\Admin\AppData\Local\Temp\TRANSFERIR COPIA_26-01-2023.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
      2⤵
        PID:1140
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Caspol.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4416
        • 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:1660

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1192-132-0x00000000002E0000-0x0000000000308000-memory.dmp

      Filesize

      160KB

    • memory/1660-142-0x0000000000A00000-0x0000000000A1A000-memory.dmp

      Filesize

      104KB

    • memory/1660-143-0x0000000004E90000-0x0000000004EF6000-memory.dmp

      Filesize

      408KB

    • memory/1660-144-0x0000000005920000-0x00000000059BC000-memory.dmp

      Filesize

      624KB

    • memory/4416-135-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4416-137-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4416-140-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB

    • memory/4416-145-0x0000000000400000-0x0000000000424000-memory.dmp

      Filesize

      144KB