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Analysis

  • max time kernel
    143s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/03/2023, 18:27

General

  • Target

    QUOTATION _RFQ# 1043999.exe

  • Size

    1.1MB

  • MD5

    e434e422d6bb9bc02f9a4be0b1c41d1b

  • SHA1

    af7347b789fb43b26a83f4864e50eedf7f62095e

  • SHA256

    c269b1931db163462343d0ecd8ef501e35e4da91c91f1464c8d526ef07a041bd

  • SHA512

    72ffed26dfa5617a70852e88d8058d6adebcbd771bc3f0102f8fcf9bdddcac2264b37d07b5fd4790c177ad87f81fce0253ff9fc85c22f8034c066e66df657552

  • SSDEEP

    24576:nVlj9vY9URDvRtWBQDtty/ziBgqMSAqzQYkYJrrzZL:nVB9g9YDptWuryduIA1L

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). Likely ransomware behaviour.

  • Script User-Agent 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 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\QUOTATION _RFQ# 1043999.exe
    "C:\Users\Admin\AppData\Local\Temp\QUOTATION _RFQ# 1043999.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2164
    • C:\Users\Admin\AppData\Local\Temp\QUOTATION _RFQ# 1043999.exe
      "C:\Users\Admin\AppData\Local\Temp\QUOTATION _RFQ# 1043999.exe"
      2⤵
        PID:1176
      • C:\Users\Admin\AppData\Local\Temp\QUOTATION _RFQ# 1043999.exe
        "C:\Users\Admin\AppData\Local\Temp\QUOTATION _RFQ# 1043999.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2724
        • 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:2548

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/2164-133-0x0000000000170000-0x0000000000288000-memory.dmp

      Filesize

      1.1MB

    • memory/2164-134-0x0000000005290000-0x0000000005834000-memory.dmp

      Filesize

      5.6MB

    • memory/2164-135-0x0000000004DF0000-0x0000000004E82000-memory.dmp

      Filesize

      584KB

    • memory/2164-136-0x0000000004A20000-0x0000000004A30000-memory.dmp

      Filesize

      64KB

    • memory/2164-137-0x0000000004A20000-0x0000000004A30000-memory.dmp

      Filesize

      64KB

    • memory/2164-138-0x0000000006230000-0x00000000062CC000-memory.dmp

      Filesize

      624KB

    • memory/2548-146-0x0000000000B50000-0x0000000000BB6000-memory.dmp

      Filesize

      408KB

    • memory/2548-147-0x0000000005100000-0x0000000005110000-memory.dmp

      Filesize

      64KB

    • memory/2724-139-0x0000000000400000-0x000000000046E000-memory.dmp

      Filesize

      440KB

    • memory/2724-142-0x0000000000400000-0x000000000046E000-memory.dmp

      Filesize

      440KB

    • memory/2724-145-0x0000000000400000-0x000000000046E000-memory.dmp

      Filesize

      440KB

    • memory/2724-155-0x0000000000400000-0x000000000046E000-memory.dmp

      Filesize

      440KB