Analysis

  • max time kernel
    223s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2022 10:25

General

  • Target

    83ade247633d89edd7c003a5e977da5e6dbdce41ab1de3a688d167ce51e2501b.exe

  • Size

    3.5MB

  • MD5

    8f67199f264b4b15551a67932f46e63e

  • SHA1

    3ec6a7e99997c2dae412db35e0ba0347cb307cac

  • SHA256

    83ade247633d89edd7c003a5e977da5e6dbdce41ab1de3a688d167ce51e2501b

  • SHA512

    4204b3aff9b6f229717fea16eafa9e6e0337212dc6ccf2496258e5b3fd7951eeb0a4f17d9fde9c31d5241bf62fef949c4ff9f9a99a1ec3c31dee09ac23147503

  • SSDEEP

    49152:QAJYJJkoiDGevfebtMDlHD3AHBMpmwpe36KUBDHpuLsH/zMLKx0CmsjJGXpZeoiu:7JYJAfvmZMFuMjgduDHcm4LHCMXpmiz

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 8 IoCs
  • Sets file to hidden 1 TTPs 4 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops file in System32 directory 18 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 5 IoCs
  • Modifies registry key 1 TTPs 2 IoCs
  • Runs net.exe
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\83ade247633d89edd7c003a5e977da5e6dbdce41ab1de3a688d167ce51e2501b.exe
    "C:\Users\Admin\AppData\Local\Temp\83ade247633d89edd7c003a5e977da5e6dbdce41ab1de3a688d167ce51e2501b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:620
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\stop.js"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1660
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
        3⤵
        • Loads dropped DLL
        • Drops file in System32 directory
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im RManServer.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1632
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im rutserv.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1960
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKLM\SYSTEM\Remote Manipulator System" /f
          4⤵
            PID:1472
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h "C:\Windows\System32\catroot3"
            4⤵
            • Sets file to hidden
            • Drops file in System32 directory
            • Views/modifies file attributes
            PID:1560
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\stop.js"
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:1552
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h +r "C:\Users\Admin\AppData\Local\Temp\install.bat"
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:1880
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h +r "C:\Windows\System32\de.exe"
            4⤵
            • Sets file to hidden
            • Drops file in System32 directory
            • Views/modifies file attributes
            PID:1920
          • C:\Windows\SysWOW64\net.exe
            net stop rserver3
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:760
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop rserver3
              5⤵
                PID:1964
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /f /im rserver3.exe
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1768
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /f /im r_server.exe
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1528
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /f /im cam_server.exe
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1752
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h -r "C:\Windows\system32\cam_server.exe"
              4⤵
              • Views/modifies file attributes
              PID:1616
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h -r "C:\Windows\SysWOW64\cam_server.exe"
              4⤵
              • Views/modifies file attributes
              PID:1620
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h "C:\Windows\system32\rserver30"
              4⤵
              • Views/modifies file attributes
              PID:1328
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h "C:\Windows\SysWOW64\rserver30"
              4⤵
              • Views/modifies file attributes
              PID:1340
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h -r "C:\Windows\system32\r_server.exe"
              4⤵
              • Views/modifies file attributes
              PID:568
            • C:\Windows\SysWOW64\attrib.exe
              attrib -s -h -r "C:\Windows\SysWOW64\r_server.exe"
              4⤵
              • Views/modifies file attributes
              PID:1432
            • C:\Windows\SysWOW64\net.exe
              net stop Telnet
              4⤵
                PID:1728
                • C:\Windows\SysWOW64\net1.exe
                  C:\Windows\system32\net1 stop Telnet
                  5⤵
                    PID:1116
                • C:\Windows\SysWOW64\sc.exe
                  sc config tlntsvr start= disabled
                  4⤵
                  • Launches sc.exe
                  PID:1168
                • C:\Windows\SysWOW64\net.exe
                  net stop "Service Host Controller"
                  4⤵
                    PID:1804
                    • C:\Windows\SysWOW64\net1.exe
                      C:\Windows\system32\net1 stop "Service Host Controller"
                      5⤵
                        PID:1772
                    • C:\Windows\SysWOW64\net.exe
                      net user HelpAssistant /delete
                      4⤵
                        PID:432
                        • C:\Windows\SysWOW64\net1.exe
                          C:\Windows\system32\net1 user HelpAssistant /delete
                          5⤵
                            PID:1992
                        • C:\Windows\SysWOW64\schtasks.exe
                          schtasks /delete /tn security /f
                          4⤵
                            PID:452
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="RealIP"
                            4⤵
                            • Modifies Windows Firewall
                            PID:588
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="Microsoft Outlook Express"
                            4⤵
                            • Modifies Windows Firewall
                            PID:1672
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="Service Host Controller"
                            4⤵
                            • Modifies Windows Firewall
                            PID:952
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="ò«ßΓ-»α«µÑßß ñ½∩ ß½πªí Windows"
                            4⤵
                            • Modifies Windows Firewall
                            PID:1472
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="ò«ßΓ-»α«µÑßß ñ½∩ ºáñáτ Windows"
                            4⤵
                            • Modifies Windows Firewall
                            PID:1148
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh firewall delete portopening tcp 57009
                            4⤵
                            • Modifies Windows Firewall
                            PID:1400
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete rule name="cam_server"
                            4⤵
                            • Modifies Windows Firewall
                            PID:328
                          • C:\Windows\SysWOW64\netsh.exe
                            netsh advfirewall firewall delete portopening tcp 57011 all
                            4⤵
                            • Modifies Windows Firewall
                            PID:788
                          • C:\Windows\SysWOW64\reg.exe
                            reg delete HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run /v "Ä»Ñαᵿ«¡¡á∩ ß¿ßΓѼá Microsoft Windows" /f
                            4⤵
                            • Modifies registry key
                            PID:1188
                          • C:\Windows\SysWOW64\reg.exe
                            reg delete HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run /v "Service Host Controller" /f
                            4⤵
                            • Modifies registry key
                            PID:1624
                          • C:\Windows\SysWOW64\reg.exe
                            reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" /v HelpAssistant /f
                            4⤵
                              PID:1396
                            • C:\Windows\SysWOW64\reg.exe
                              reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /v "cam_server.exe" /f
                              4⤵
                                PID:1588
                              • C:\Windows\SysWOW64\reg.exe
                                reg delete "HKLM\System\CurrentControlSet\Services\RServer3" /f
                                4⤵
                                  PID:1020
                                • C:\Windows\SysWOW64\catroot3\rutserv.exe
                                  "rutserv.exe" /silentinstall
                                  4⤵
                                  • Executes dropped EXE
                                  • Suspicious use of AdjustPrivilegeToken
                                  PID:1356
                            • C:\Windows\SysWOW64\cmd.exe
                              cmd /c ""C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd" "
                              2⤵
                              • Deletes itself
                              PID:860

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • C:\Users\Admin\AppData\Local\Temp\7ZSfx000.cmd

                            Filesize

                            300B

                            MD5

                            685c4803abe213f0927353125ab855cc

                            SHA1

                            4a98d8b716e78a2219ee9bf5d01ee1a29abfe135

                            SHA256

                            2d59ce82f84512b155225f452625b26d44616d3c7540b19657383c082993495a

                            SHA512

                            85a692b204de76efabc38c1485f011970cf6a28d5a2e9a1f2f218dcc17400ce84ce80ee0e1b6560d37102317fedcafc1eb855d99d5c3a33a837eb7fc3fb37164

                          • C:\Users\Admin\AppData\Local\Temp\HookDrv.dll

                            Filesize

                            198KB

                            MD5

                            348af5474c0abb5769d4d75a12cca4ee

                            SHA1

                            b423c186f9cc4735f35df99bae8e72c351dfc745

                            SHA256

                            828ce0069f2f21dd9c3cf3832883ec9229831feaff4d212058e95579441d72a8

                            SHA512

                            6b6659c9b16ba523ffbf89f82194226299089cea92ee570e272a609a843d34f46e9a035b30f2cf99817e540a81bf692c1e72f4569675baf1189b256a8a5da487

                          • C:\Users\Admin\AppData\Local\Temp\RIPCServer.dll

                            Filesize

                            144KB

                            MD5

                            30e269f850baf6ca25187815912e21c5

                            SHA1

                            eb160de97d12b4e96f350dd0d0126d41d658afb3

                            SHA256

                            379191bfd34d41e96760c7a539e2056a22be3d44bf0e8712b53e443f55aead90

                            SHA512

                            9b86a4eefdcae46e605f85e752ef61e39fd0212a19b7fd4c35eb3ab99851a0b906d048d12d1e1e985a340a67a64d405b8cf803555865137278f0c19d686df5e7

                          • C:\Users\Admin\AppData\Local\Temp\RWLN.dll

                            Filesize

                            357KB

                            MD5

                            bb1f3e716d12734d1d2d9219a3979a62

                            SHA1

                            0ef66eed2f2ae45ec2d478902833b830334109cb

                            SHA256

                            d7e9c9043ed7df2af800d9b2a33e3efddf68b70f043e9717afc4b7dd4e13e077

                            SHA512

                            bbc90747dd45a01b05f5c0b6fa58ffe18af894b05363267ac1cc9fe3262f5e65c8ae4e08dfd82d89b9112e86e42d24a12784b79f5ea30b6443015c19b6792c9c

                          • C:\Users\Admin\AppData\Local\Temp\de.exe

                            Filesize

                            98KB

                            MD5

                            b8622a3042d7fa48b2e6de433007c870

                            SHA1

                            6399b9d115c3f1d3c5469f81b1a821bf75b75ae8

                            SHA256

                            cdb8330b9a36462dad63fb5c98520c4dd1cecf8a20d071bb0eff15ecf9fe0c98

                            SHA512

                            19450e826c78cc9526bf9ccba356fa63c8282ae3093db9ad71c1f21bcd80b3850b3aabbd2221fd6ddc293378df3d52ac0484c8882aeee517145d018ce3b4ed73

                          • C:\Users\Admin\AppData\Local\Temp\dsfVorbisEncoder.dll

                            Filesize

                            1.6MB

                            MD5

                            ff622a8812d8b1eff8f8d1a32087f9d2

                            SHA1

                            910615c9374b8734794ac885707ff5370db42ef1

                            SHA256

                            1b8fe11c0bdcbf1f4503c478843de02177c606912c89e655e482adec787c2ebf

                            SHA512

                            1a7c49f172691bf071df0d47d6ee270afbfa889afb8d5bd893496277fd816630ecd7b50c978b53d88228922ba6070f382b959ffc389394e0f08daab107369931

                          • C:\Users\Admin\AppData\Local\Temp\install.bat

                            Filesize

                            4KB

                            MD5

                            07635ff42819d63a141dbb23c099d614

                            SHA1

                            2b5ae76c7368634d15a79c8c06fe3bdc5e2bb73c

                            SHA256

                            7f45fe873cdd125e2fcdf8b146559d1500b3d622d1be1324af945db12c2d9179

                            SHA512

                            109f5ee9370d47ef988c811ba31d7696a39ebd4e08ddf9566dd7011508c7038cdbb9ad6fe58b73c4aaf2d7f8f587483b2cc1f8173e8defca5cfb00d915c03b31

                          • C:\Users\Admin\AppData\Local\Temp\rfusclient.exe

                            Filesize

                            3.9MB

                            MD5

                            1c08c069e2613830d464358e64e129c0

                            SHA1

                            88b13f5b0dbe01d8e8badbe6cd1254849304509e

                            SHA256

                            c1eca4a9056a18b412cb5ce3380598ee7bae385a99faae0cf471ac9bb04fd222

                            SHA512

                            5af70d797177b6bddf41daa753214ef5ee413c11023a775d431f6494cb5b01b50e2f9221f86dc9d95074b465cb27bbabfd88ea42c9f4a90be1135f1b70991fa0

                          • C:\Users\Admin\AppData\Local\Temp\rutserv.exe

                            Filesize

                            4.6MB

                            MD5

                            89d8579491b86455a3fd9dce03eebcd2

                            SHA1

                            05a46af0fc9ffc29bbf8f15979e1cd940a730f78

                            SHA256

                            7489894bf2d7995af8dbca5fcf83f0e7577b9a73da39e014db27efff4967b4e4

                            SHA512

                            d9294684648bc4b8c3d1fb0b5a5cc68d7b1d503fbf5f9c565bb30e1e4511a35771b9751b38af14c544f53892ed98be50d52ff7050cacf6ba974aaeb0e274186b

                          • C:\Users\Admin\AppData\Local\Temp\set.reg

                            Filesize

                            16KB

                            MD5

                            81c80910b0c2cf0be469f33dc4ef12c1

                            SHA1

                            0399ed7b5f725c8140a3505c86355f6226a47729

                            SHA256

                            fecbb64b2e7292f7aabeb6e0a7dc212e4dd14af58f8b8f387ce53c53c373743c

                            SHA512

                            c659175c735620763ad5b11627da01e61321d1eac8f36c58212b4ae957db328baf21fa9c1a9090f0ff56ec580e3f71bf14f07f2a634d836b60e63a0f22e91fd3

                          • C:\Users\Admin\AppData\Local\Temp\stop.js

                            Filesize

                            215B

                            MD5

                            804b35ef108ec9839eb6a9335add8ca1

                            SHA1

                            bf91e6645c4a1c8cab2d20388469da9ed0a82d56

                            SHA256

                            fe111b7ea4e14ab7ba5004aea52b10030e0282bb5c40d4ba55761a2c5be59406

                            SHA512

                            822a3ec5e0e353058d4355bc01a44440dafe8d16c57744a3dcbc962eb110ed3f6843556568616bfc5dc7fad5f5832cd27d6591dc50105f2c79fc16c33919936d

                          • C:\Windows\SysWOW64\catroot3\rutserv.exe

                            Filesize

                            4.6MB

                            MD5

                            89d8579491b86455a3fd9dce03eebcd2

                            SHA1

                            05a46af0fc9ffc29bbf8f15979e1cd940a730f78

                            SHA256

                            7489894bf2d7995af8dbca5fcf83f0e7577b9a73da39e014db27efff4967b4e4

                            SHA512

                            d9294684648bc4b8c3d1fb0b5a5cc68d7b1d503fbf5f9c565bb30e1e4511a35771b9751b38af14c544f53892ed98be50d52ff7050cacf6ba974aaeb0e274186b

                          • C:\Windows\SysWOW64\de.exe

                            Filesize

                            98KB

                            MD5

                            b8622a3042d7fa48b2e6de433007c870

                            SHA1

                            6399b9d115c3f1d3c5469f81b1a821bf75b75ae8

                            SHA256

                            cdb8330b9a36462dad63fb5c98520c4dd1cecf8a20d071bb0eff15ecf9fe0c98

                            SHA512

                            19450e826c78cc9526bf9ccba356fa63c8282ae3093db9ad71c1f21bcd80b3850b3aabbd2221fd6ddc293378df3d52ac0484c8882aeee517145d018ce3b4ed73

                          • \Windows\SysWOW64\catroot3\rutserv.exe

                            Filesize

                            4.6MB

                            MD5

                            89d8579491b86455a3fd9dce03eebcd2

                            SHA1

                            05a46af0fc9ffc29bbf8f15979e1cd940a730f78

                            SHA256

                            7489894bf2d7995af8dbca5fcf83f0e7577b9a73da39e014db27efff4967b4e4

                            SHA512

                            d9294684648bc4b8c3d1fb0b5a5cc68d7b1d503fbf5f9c565bb30e1e4511a35771b9751b38af14c544f53892ed98be50d52ff7050cacf6ba974aaeb0e274186b

                          • memory/620-54-0x00000000763D1000-0x00000000763D3000-memory.dmp

                            Filesize

                            8KB