Analysis

  • max time kernel
    117s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    13/07/2020, 12:04

General

  • Target

    Guqcvju_Signed_.exe

  • Size

    1.1MB

  • MD5

    271646d2ae5f0c7693be133688eaca38

  • SHA1

    fce0e671122419cbb94f9651039323e945960964

  • SHA256

    b2ebc0f8c302a04961b8c2ed0673384050e5932a370be062788b7630bf188123

  • SHA512

    263656c10302a5ae39d3712b7bcbf8424b46bb98132bdb1f659baebba72eb1e166e5af4b63ad83e4b458fc4547ebcb1b7be62c18e4dd3622fdcf8067f40fe3b7

Score
8/10

Malware Config

Signatures

  • Modifies registry key 1 TTPs 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Script User-Agent 1 IoCs
  • Suspicious use of WriteProcessMemory 527 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Adds Run entry to start application 2 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Guqcvju_Signed_.exe
    "C:\Users\Admin\AppData\Local\Temp\Guqcvju_Signed_.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious use of SetThreadContext
    • Adds Run entry to start application
    PID:1496
    • C:\Windows\SysWOW64\TapiUnattend.exe
      "C:\Windows\System32\TapiUnattend.exe"
      2⤵
        PID:748
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c C:\Users\Public\Natso.bat
          3⤵
            PID:2348
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:2408
            • C:\Windows\SysWOW64\reg.exe
              reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\x.bat reg delete hkcu\Environment /v windir /f && REM "
              4⤵
              • Modifies registry key
              PID:2420
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:2432
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:2520
            • C:\Windows\SysWOW64\cmd.exe
              cmd /c C:\Users\Public\Runex.bat
              3⤵
                PID:2600
                • C:\Windows \System32\fodhelper.exe
                  "C:\Windows \System32\fodhelper.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:2648
                • C:\Windows \System32\fodhelper.exe
                  "C:\Windows \System32\fodhelper.exe"
                  4⤵
                  • Executes dropped EXE
                  PID:2672
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
              • Loads dropped DLL
              PID:2368

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1496-124-0x0000000050480000-0x00000000504C0000-memory.dmp

            Filesize

            256KB

          • memory/2368-129-0x0000000000660000-0x00000000007B6000-memory.dmp

            Filesize

            1.3MB

          • memory/2368-127-0x0000000000660000-0x00000000007B6000-memory.dmp

            Filesize

            1.3MB