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Analysis

  • max time kernel
    62s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    04/04/2023, 09:15

General

  • Target

    Quotation_pdf.exe

  • Size

    910KB

  • MD5

    6be7360d15864b39760f38be37d21b32

  • SHA1

    9a85a30228996405f11807cbbf8d9cd7e47d45cc

  • SHA256

    0f71aedb95163de525fa395b1a444f48222bc28b70521bff45467cbf98b63b9a

  • SHA512

    b98ad8f32c4632c403466e27161518c991b6c9395da27a743bc3af6ca2a7c632b595ce44fd7d09c6603212cdab9dcb220db76f80399719f7097451a8190f2a0e

  • SSDEEP

    24576:S0PXkGzgCC4mEIXxiZiX6vjgxxUtqY6VUOP:DPng74mJxmiX6vjgEb2

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5450700540:AAEJyEEV8BKgYUKmnCPZxp19kD9GVSRup5M/sendMessage?chat_id=5422342474

Signatures

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Quotation_pdf.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:520
      • 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
        • outlook_office_path
        • outlook_win_path
        PID:1708

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/520-64-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-83-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-74-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-71-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-69-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-68-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/520-66-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/520-65-0x0000000000400000-0x000000000046E000-memory.dmp

    Filesize

    440KB

  • memory/1168-60-0x0000000000490000-0x000000000049C000-memory.dmp

    Filesize

    48KB

  • memory/1168-57-0x0000000004DE0000-0x0000000004E20000-memory.dmp

    Filesize

    256KB

  • memory/1168-62-0x0000000000A50000-0x0000000000A56000-memory.dmp

    Filesize

    24KB

  • memory/1168-61-0x00000000051A0000-0x0000000005258000-memory.dmp

    Filesize

    736KB

  • memory/1168-54-0x00000000011B0000-0x000000000129A000-memory.dmp

    Filesize

    936KB

  • memory/1168-59-0x0000000004DE0000-0x0000000004E20000-memory.dmp

    Filesize

    256KB

  • memory/1168-58-0x0000000004DE0000-0x0000000004E20000-memory.dmp

    Filesize

    256KB

  • memory/1168-63-0x00000000054B0000-0x0000000005526000-memory.dmp

    Filesize

    472KB

  • memory/1168-56-0x0000000000480000-0x0000000000494000-memory.dmp

    Filesize

    80KB

  • memory/1168-55-0x0000000004DE0000-0x0000000004E20000-memory.dmp

    Filesize

    256KB

  • memory/1708-76-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

    Filesize

    4KB

  • memory/1708-77-0x0000000000090000-0x00000000000F6000-memory.dmp

    Filesize

    408KB

  • memory/1708-81-0x0000000000090000-0x00000000000F6000-memory.dmp

    Filesize

    408KB

  • memory/1708-79-0x0000000000090000-0x00000000000F6000-memory.dmp

    Filesize

    408KB

  • memory/1708-82-0x0000000004A20000-0x0000000004ADC000-memory.dmp

    Filesize

    752KB

  • memory/1708-75-0x0000000000090000-0x00000000000F6000-memory.dmp

    Filesize

    408KB