Analysis

  • max time kernel
    152s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2023, 20:06

General

  • Target

    5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe

  • Size

    890KB

  • MD5

    e0236718f5d4d70c2dc485d322834897

  • SHA1

    f0276ffdd801d3440918269f5d880f0502bda55e

  • SHA256

    5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081

  • SHA512

    a7fae05a2aeb61acac13e682dcbff7bd000ecbb0ebc1350a62e528bc6abffe94db1e0cc0b71fa0b6cb90479e666b71dfa7406b8aeddff0bd9490d556a2fdc553

  • SSDEEP

    24576:b4QWOM4PEXi53mZbPovZuFeBwEtumDDd+c6UcqK:b4QWV4Eq3mavEeBwEtfZ+cfcn

Malware Config

Extracted

Family

blustealer

C2

https://api.telegram.org/bot5797428905:AAGaRRXGZN1d9GGFd3sE5x4uSpCGF0PU4m4/sendMessage?chat_id=1251788325

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).

  • Script User-Agent 1 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
    "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2672
    • C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
      "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
      2⤵
        PID:1676
      • C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
        "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
        2⤵
          PID:4356
        • C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
          "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
          2⤵
            PID:1832
          • C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe
            "C:\Users\Admin\AppData\Local\Temp\5923a0d6ac3cd029ce06706021aaaff83c55193a23c2d5fedd5b3cdd0065b081.exe"
            2⤵
            • Suspicious use of SetThreadContext
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:1808
            • 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:2188

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1808-140-0x0000000000400000-0x000000000046E000-memory.dmp

          Filesize

          440KB

        • memory/1808-150-0x0000000000400000-0x000000000046E000-memory.dmp

          Filesize

          440KB

        • memory/1808-146-0x0000000000400000-0x000000000046E000-memory.dmp

          Filesize

          440KB

        • memory/1808-142-0x0000000000400000-0x000000000046E000-memory.dmp

          Filesize

          440KB

        • memory/2188-148-0x0000000005560000-0x0000000005570000-memory.dmp

          Filesize

          64KB

        • memory/2188-147-0x0000000000C90000-0x0000000000CF6000-memory.dmp

          Filesize

          408KB

        • memory/2672-136-0x0000000005190000-0x00000000051A0000-memory.dmp

          Filesize

          64KB

        • memory/2672-139-0x0000000000FA0000-0x000000000103C000-memory.dmp

          Filesize

          624KB

        • memory/2672-138-0x0000000005190000-0x00000000051A0000-memory.dmp

          Filesize

          64KB

        • memory/2672-137-0x0000000005190000-0x00000000051A0000-memory.dmp

          Filesize

          64KB

        • memory/2672-133-0x00000000006B0000-0x0000000000796000-memory.dmp

          Filesize

          920KB

        • memory/2672-135-0x0000000005240000-0x00000000052D2000-memory.dmp

          Filesize

          584KB

        • memory/2672-134-0x0000000005750000-0x0000000005CF4000-memory.dmp

          Filesize

          5.6MB