Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    15/04/2022, 00:47

General

  • Target
    afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe
  • Size 1.3MB
  • Sample220415-a48pyaehgn
  • SHA256 afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • quasar

Version
  • 2.1.0.0

Botnet
  • Wraith00hrs

C2
  • 100.26.221.183:4782

Mutex
  • VNM_MUTEX_kv7tSTHxhbSWaYVuIh

Attributes
  • encryption_key

    VyRhk9JpIqX4HHIRBxn8

  • install_name

    windows chrome.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    chrome Startup

  • subdirectory

    SubDir

Extracted

Family
  • warzonerat

C2
  • 100.26.221.183:5200

Signatures

  • Contains code to disable Windows Defender 6 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Quasar Payload 6 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • VenomRAT

    VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

  • WarzoneRat, AveMaria

    WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

  • Warzone RAT Payload 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Modifies registry class 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe
    "C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2060
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Jjlxrtnulqhzcd.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:2248
      • C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe
        "C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Windows security modification
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2196
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks" /create /tn "chrome Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe" /rl HIGHEST /f
          4⤵
          • Creates scheduled task(s)
          PID:2592
        • C:\Users\Admin\AppData\Roaming\SubDir\windows chrome.exe
          "C:\Users\Admin\AppData\Roaming\SubDir\windows chrome.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:5084
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks" /create /tn "chrome Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows chrome.exe" /rl HIGHEST /f
            5⤵
            • Creates scheduled task(s)
            PID:1732
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "powershell" Get-MpPreference -verbose
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4276
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3188
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
            5⤵
              PID:972
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\e3ncpmSglZGY.bat" "
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:2224
            • C:\Windows\SysWOW64\chcp.com
              chcp 65001
              5⤵
                PID:4760
              • C:\Windows\SysWOW64\PING.EXE
                ping -n 10 localhost
                5⤵
                • Runs ping.exe
                PID:216
              • C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe
                "C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:32
        • C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe
          "C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe"
          2⤵
            PID:2200
          • C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe
            "C:\Users\Admin\AppData\Local\Temp\afe6ffe01133465cb36e3822a6a0583dc2041f405d82fe231d0ecc95ec05c7c7.exe"
            2⤵
            • Adds Run key to start application
            PID:2812

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              $77-Venom.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\$77-Venom.exe.log
              • Size 1KB
              • SHA256 f49dbd55029bfbc15134f7c6a4f967d6c39142c63f2e8f1f8c78fab108a2c928
              • MD5 SHA1 SHA512

              $77-Venom.exe

              • Path C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe
              • Size 534KB
              • SHA256 9505524dff86345befdf3ce0dba5a7a58abe57725badbe0aa19a16ac20579422
              • MD5 SHA1 SHA512 SSDEEP

              $77-Venom.exe

              • Path C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe
              • Size 534KB
              • SHA256 9505524dff86345befdf3ce0dba5a7a58abe57725badbe0aa19a16ac20579422
              • MD5 SHA1 SHA512 SSDEEP

              $77-Venom.exe

              • Path C:\Users\Admin\AppData\Local\Temp\$77-Venom.exe
              • Size 534KB
              • SHA256 9505524dff86345befdf3ce0dba5a7a58abe57725badbe0aa19a16ac20579422
              • MD5 SHA1 SHA512 SSDEEP

              Jjlxrtnulqhzcd.vbs

              • Path C:\Users\Admin\AppData\Local\Temp\Jjlxrtnulqhzcd.vbs
              • Size 97B
              • SHA256 2f931374cab0f3601d1698f4943f8e4f83cbfc3efb478bf518091ab23642dbc3
              • MD5 SHA1 SHA512

              e3ncpmSglZGY.bat

              • Path C:\Users\Admin\AppData\Local\Temp\e3ncpmSglZGY.bat
              • Size 206B
              • SHA256 0c97f22f8e1919127d7bca5296d4a9fc0e7448a64c3b632a3def0599a6d66943
              • MD5 SHA1 SHA512

              windows chrome.exe

              • Path C:\Users\Admin\AppData\Roaming\SubDir\windows chrome.exe
              • Size 534KB
              • SHA256 9505524dff86345befdf3ce0dba5a7a58abe57725badbe0aa19a16ac20579422
              • MD5 SHA1 SHA512 SSDEEP

              windows chrome.exe

              • Path C:\Users\Admin\AppData\Roaming\SubDir\windows chrome.exe
              • Size 534KB
              • SHA256 9505524dff86345befdf3ce0dba5a7a58abe57725badbe0aa19a16ac20579422
              • MD5 SHA1 SHA512 SSDEEP

              memory/2060-130-0x0000000000FF0000-0x0000000001148000-memory.dmp

              memory/2060-133-0x0000000005AF0000-0x0000000005AFA000-memory.dmp

              memory/2060-132-0x0000000005B60000-0x0000000005BF2000-memory.dmp

              memory/2060-131-0x0000000006110000-0x00000000066B4000-memory.dmp

              memory/2196-140-0x0000000000820000-0x00000000008AC000-memory.dmp

              memory/2196-148-0x00000000064B0000-0x00000000064EC000-memory.dmp

              memory/2196-147-0x0000000006090000-0x00000000060A2000-memory.dmp

              memory/2196-146-0x0000000005130000-0x0000000005196000-memory.dmp

              memory/2812-144-0x0000000000400000-0x0000000000554000-memory.dmp

              memory/2812-142-0x0000000000400000-0x0000000000554000-memory.dmp

              memory/2812-145-0x0000000000400000-0x0000000000554000-memory.dmp

              memory/4276-155-0x0000000005440000-0x0000000005A68000-memory.dmp

              memory/4276-170-0x0000000007850000-0x0000000007858000-memory.dmp

              memory/4276-163-0x00000000067D0000-0x00000000067EE000-memory.dmp

              memory/4276-164-0x0000000007B70000-0x00000000081EA000-memory.dmp

              memory/4276-165-0x0000000007530000-0x000000000754A000-memory.dmp

              memory/4276-166-0x00000000075A0000-0x00000000075AA000-memory.dmp

              memory/4276-167-0x00000000077B0000-0x0000000007846000-memory.dmp

              memory/4276-168-0x0000000007760000-0x000000000776E000-memory.dmp

              memory/4276-169-0x0000000007870000-0x000000000788A000-memory.dmp

              memory/4276-162-0x0000000070380000-0x00000000703CC000-memory.dmp

              memory/4276-161-0x00000000067F0000-0x0000000006822000-memory.dmp

              memory/4276-160-0x00000000028A0000-0x00000000028B0000-memory.dmp

              memory/4276-158-0x0000000005E40000-0x0000000005E5E000-memory.dmp

              memory/4276-157-0x0000000005B70000-0x0000000005BD6000-memory.dmp

              memory/4276-156-0x0000000005370000-0x0000000005392000-memory.dmp

              memory/4276-154-0x0000000002900000-0x0000000002936000-memory.dmp