Analysis

  • max time kernel
    142s
  • max time network
    170s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 12:51

General

  • Target

    a91de2cf1e3983aba4591ade5de60c09.exe

  • Size

    6.1MB

  • MD5

    a91de2cf1e3983aba4591ade5de60c09

  • SHA1

    7bca47ffd723620f382cc9ac503277481e6d7afa

  • SHA256

    4a0354e05e77a9fdd435d70493c99650a8d5452399a058b64951e7b8d544f1a4

  • SHA512

    b7a4706433898caaaf854612b8bab6f87d6935b8c58e3e08b1d3c3ee63924341fae50c0acfd59e052a56ac3c0ccc017bd31ecf1f9bcd4362b739ac50b17b3f6e

  • SSDEEP

    196608:5bMfbHQ06JaxBEvXUJyXEJDNfZJoExr77dZWoNaUyr:NeH4YxBYXY+sJokFZWLUy

Malware Config

Signatures

  • RMS

    Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.

  • Grants admin privileges 1 TTPs

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

  • Executes dropped EXE 5 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 1 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.

  • Modifies WinLogon 2 TTPs 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies registry class 3 IoCs
  • NTFS ADS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 52 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 16 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a91de2cf1e3983aba4591ade5de60c09.exe
    "C:\Users\Admin\AppData\Local\Temp\a91de2cf1e3983aba4591ade5de60c09.exe"
    1⤵
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Modifies registry class
    • NTFS ADS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1628
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /TN "Microsoft\Windows\Wininet\winsers" /TR "\"C:\ProgramData\Windows Tasks Service\winserv.exe\" Task Service\winserv.exe" /SC MINUTE /MO 1 /RL HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:1312
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /TN "Microsoft\Windows\Wininet\winser" /TR "\"C:\ProgramData\Windows Tasks Service\winserv.exe\" Task Service\winserv.exe" /SC ONLOGON /RL HIGHEST
      2⤵
      • Creates scheduled task(s)
      PID:1792
    • C:\ProgramData\Windows Tasks Service\winserv.exe
      "C:\ProgramData\Windows Tasks Service\winserv.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1364
      • C:\ProgramData\Windows Tasks Service\winserv.exe
        "C:\ProgramData\Windows Tasks Service\winserv.exe" -second
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:548
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c net user John 12345 /add
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1512
      • C:\Windows\system32\net.exe
        net user John 12345 /add
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:680
        • C:\Windows\system32\net1.exe
          C:\Windows\system32\net1 user John 12345 /add
          4⤵
            PID:1124
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c net localgroup "Администраторы" John /add
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\system32\net.exe
          net localgroup "Администраторы" John /add
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:592
          • C:\Windows\system32\net1.exe
            C:\Windows\system32\net1 localgroup "Администраторы" John /add
            4⤵
              PID:1908
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c net localgroup "Пользователи удаленного рабочего стола" John /add
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1996
          • C:\Windows\system32\net.exe
            net localgroup "Пользователи удаленного рабочего стола" John /add
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1612
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /c net localgroup "Пользователи удаленного управления" john /add" John /add
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1964
          • C:\Windows\system32\net.exe
            net localgroup "Пользователи удаленного управления" john /add" John /add
            3⤵
              PID:976
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c net localgroup "Administrators" John /add
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1068
            • C:\Windows\system32\net.exe
              net localgroup "Administrators" John /add
              3⤵
                PID:1992
            • C:\Windows\system32\cmd.exe
              C:\Windows\system32\cmd.exe /c net localgroup "Administradores" John /add
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:1700
              • C:\Windows\system32\net.exe
                net localgroup "Administradores" John /add
                3⤵
                • Suspicious use of WriteProcessMemory
                PID:1976
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 localgroup "Administradores" John /add
                  4⤵
                    PID:852
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /c net localgroup "Remote Desktop Users" john /add
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:1684
                • C:\Windows\system32\net.exe
                  net localgroup "Remote Desktop Users" john /add
                  3⤵
                    PID:1624
                • C:\ProgramData\RDPWinst.exe
                  C:\ProgramData\RDPWinst.exe -i
                  2⤵
                  • Executes dropped EXE
                  • Sets DLL path for service in the registry
                  • Modifies WinLogon
                  • Drops file in Program Files directory
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1728
                  • C:\Windows\system32\netsh.exe
                    netsh advfirewall firewall add rule name="Remote Desktop" dir=in protocol=tcp localport=3389 profile=any action=allow
                    3⤵
                    • Modifies Windows Firewall
                    PID:1636
                • C:\Windows\system32\cmd.exe
                  cmd /c C:\Programdata\Install\del.bat
                  2⤵
                    PID:1864
                    • C:\Windows\system32\timeout.exe
                      timeout 5
                      3⤵
                      • Delays execution with timeout.exe
                      PID:1084
                • C:\Windows\system32\net1.exe
                  C:\Windows\system32\net1 localgroup "Пользователи удаленного управления" john /add" John /add
                  1⤵
                    PID:644
                  • C:\Windows\system32\net1.exe
                    C:\Windows\system32\net1 localgroup "Remote Desktop Users" john /add
                    1⤵
                      PID:1332
                    • C:\Windows\system32\net1.exe
                      C:\Windows\system32\net1 localgroup "Administrators" John /add
                      1⤵
                        PID:1768
                      • C:\Windows\system32\net1.exe
                        C:\Windows\system32\net1 localgroup "Пользователи удаленного рабочего стола" John /add
                        1⤵
                          PID:1540
                        • C:\Windows\system32\taskeng.exe
                          taskeng.exe {56A0259B-7080-47F9-B2A4-57957C323376} S-1-5-21-2292972927-2705560509-2768824231-1000:GRXNNIIE\Admin:Interactive:[1]
                          1⤵
                            PID:1180
                            • C:\ProgramData\Windows Tasks Service\winserv.exe
                              "C:\ProgramData\Windows Tasks Service\winserv.exe" Task Service\winserv.exe
                              2⤵
                              • Executes dropped EXE
                              • Checks computer location settings
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of SetWindowsHookEx
                              PID:1624
                            • C:\ProgramData\Windows Tasks Service\winserv.exe
                              "C:\ProgramData\Windows Tasks Service\winserv.exe" Task Service\winserv.exe
                              2⤵
                              • Executes dropped EXE
                              • Checks computer location settings
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of SetWindowsHookEx
                              PID:1624

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • C:\ProgramData\RDPWinst.exe

                            Filesize

                            1.4MB

                            MD5

                            3288c284561055044c489567fd630ac2

                            SHA1

                            11ffeabbe42159e1365aa82463d8690c845ce7b7

                            SHA256

                            ac92d4c6397eb4451095949ac485ef4ec38501d7bb6f475419529ae67e297753

                            SHA512

                            c25b28a340a23a9fa932aa95075f85fdd61880f29ef96f5179097b652f69434e0f1f8825e2648b2a0de1f4b0f9b8373080a22117974fcdf44112906d330fca02

                          • C:\ProgramData\Windows Tasks Service\settings.dat

                            Filesize

                            2KB

                            MD5

                            0c76256fb66c565841d785cc7b7ab23c

                            SHA1

                            43f5aabc9fbc03144744294b53bd1515c6eec93f

                            SHA256

                            7b0f3c349d8ea4839d7c7c00840304cf64b810d2d69e5447156464b77f9cb042

                            SHA512

                            bee68635e80b52a8042c796763cc16b95104871009b53f615879c353c7bebce850481cf8fd95647e2877e4cc46bd99856b55d638309ad5af5112ad66461e9d5e

                          • C:\ProgramData\Windows Tasks Service\winserv.exe

                            Filesize

                            10.2MB

                            MD5

                            3f4f5a6cb95047fea6102bd7d2226aa9

                            SHA1

                            fc09dd898b6e7ff546e4a7517a715928fbafc297

                            SHA256

                            99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

                            SHA512

                            de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

                          • C:\ProgramData\Windows Tasks Service\winserv.exe

                            Filesize

                            10.2MB

                            MD5

                            3f4f5a6cb95047fea6102bd7d2226aa9

                            SHA1

                            fc09dd898b6e7ff546e4a7517a715928fbafc297

                            SHA256

                            99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

                            SHA512

                            de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

                          • C:\ProgramData\Windows Tasks Service\winserv.exe

                            Filesize

                            10.2MB

                            MD5

                            3f4f5a6cb95047fea6102bd7d2226aa9

                            SHA1

                            fc09dd898b6e7ff546e4a7517a715928fbafc297

                            SHA256

                            99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

                            SHA512

                            de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

                          • C:\ProgramData\Windows Tasks Service\winserv.exe

                            Filesize

                            10.2MB

                            MD5

                            3f4f5a6cb95047fea6102bd7d2226aa9

                            SHA1

                            fc09dd898b6e7ff546e4a7517a715928fbafc297

                            SHA256

                            99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

                            SHA512

                            de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

                          • C:\ProgramData\Windows Tasks Service\winserv.exe

                            Filesize

                            10.2MB

                            MD5

                            3f4f5a6cb95047fea6102bd7d2226aa9

                            SHA1

                            fc09dd898b6e7ff546e4a7517a715928fbafc297

                            SHA256

                            99fd9e75e6241eff30e01c5b59df9e901fb24d12bee89c069cc6158f78b3cc98

                            SHA512

                            de5c8155f426a4e55953ae85410c7d9ad84f5643c30865fc036d1270310e28754772bd0f3093444a16ef0c1fa3db6c56301746fb5e7f03ce692bfdad0c4fb688

                          • C:\Programdata\Install\del.bat

                            Filesize

                            159B

                            MD5

                            49a9fec3ba20596a39e2bfae59ff4b3c

                            SHA1

                            b9cc7369a94831b912ed85532d7cc99f32c82040

                            SHA256

                            3a85f338cd09aefe830c7b8bac225e3d8d847b7184ecfb625ad7f46492dba681

                            SHA512

                            e5174539967fbc5dd1a4cec7d7a868c45ff58906fd2e580ba49a82b0ff6fabfb0564678d3aca37e86f9124776d7aba6c65fa0f72219e0474adcb9dc8e7484bea

                          • \Program Files\RDP Wrapper\rdpwrap.dll

                            Filesize

                            114KB

                            MD5

                            461ade40b800ae80a40985594e1ac236

                            SHA1

                            b3892eef846c044a2b0785d54a432b3e93a968c8

                            SHA256

                            798af20db39280f90a1d35f2ac2c1d62124d1f5218a2a0fa29d87a13340bd3e4

                            SHA512

                            421f9060c4b61fa6f4074508602a2639209032fd5df5bfc702a159e3bad5479684ccb3f6e02f3e38fb8db53839cf3f41fe58a3acad6ec1199a48dc333b2d8a26

                          • memory/548-64-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/548-77-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1364-59-0x0000000075831000-0x0000000075833000-memory.dmp

                            Filesize

                            8KB

                          • memory/1364-63-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1624-102-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1624-101-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1624-94-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1624-93-0x0000000000400000-0x0000000000E31000-memory.dmp

                            Filesize

                            10.2MB

                          • memory/1628-54-0x000007FEFC1B1000-0x000007FEFC1B3000-memory.dmp

                            Filesize

                            8KB