Analysis

  • max time kernel
    149s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 10:45

General

  • Target

    828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll

  • Size

    111KB

  • MD5

    31aa3bc23c2cdb7ef511108cc593ee70

  • SHA1

    29f2a9485edd516665c5dfc811c3e63af56b8b6c

  • SHA256

    828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b

  • SHA512

    9ed2ddf1d9b17eba646cc69480b9bb609aeaf9ad0af0a7b122ba4f9a4cab84e45fe9b9c19d9f0a12e37fcdfe3427c75289d4bc1132a2bc2b4031fcf44163d91c

  • SSDEEP

    3072:oySFI8LZyHMpj7iefLFaHEYWv4GES6WM1Q:rv8LZyHGDLUHEYOh1cQ

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 4 IoCs
  • UPX packed file 3 IoCs

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

  • Loads dropped DLL 6 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops file in System32 directory 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\lsass.exe
    C:\Windows\system32\lsass.exe
    1⤵
      PID:476
    • C:\Windows\system32\services.exe
      C:\Windows\system32\services.exe
      1⤵
        PID:460
        • C:\Windows\System32\svchost.exe
          C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
          2⤵
            PID:792
            • C:\Windows\system32\Dwm.exe
              "C:\Windows\system32\Dwm.exe"
              3⤵
                PID:1176
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k NetworkService
              2⤵
                PID:240
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                2⤵
                  PID:1656
                • C:\Windows\system32\sppsvc.exe
                  C:\Windows\system32\sppsvc.exe
                  2⤵
                    PID:1800
                  • C:\Windows\system32\taskhost.exe
                    "taskhost.exe"
                    2⤵
                      PID:1120
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                      2⤵
                        PID:1060
                      • C:\Windows\System32\spoolsv.exe
                        C:\Windows\System32\spoolsv.exe
                        2⤵
                          PID:340
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k netsvcs
                          2⤵
                            PID:864
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalService
                            2⤵
                              PID:832
                            • C:\Windows\System32\svchost.exe
                              C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                              2⤵
                                PID:740
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k RPCSS
                                2⤵
                                  PID:652
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k DcomLaunch
                                  2⤵
                                    PID:576
                                  • C:\Windows\SysWOW64\ywkkso.exe
                                    C:\Windows\SysWOW64\ywkkso.exe
                                    2⤵
                                    • Executes dropped EXE
                                    • Suspicious use of SetThreadContext
                                    • Suspicious use of WriteProcessMemory
                                    PID:1832
                                    • C:\Windows\SysWOW64\svchost.exe
                                      svchost.exe
                                      3⤵
                                        PID:980
                                  • C:\Windows\system32\winlogon.exe
                                    winlogon.exe
                                    1⤵
                                      PID:416
                                    • C:\Windows\system32\csrss.exe
                                      %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                      1⤵
                                        PID:376
                                      • C:\Windows\system32\wininit.exe
                                        wininit.exe
                                        1⤵
                                          PID:368
                                          • C:\Windows\system32\lsm.exe
                                            C:\Windows\system32\lsm.exe
                                            2⤵
                                              PID:484
                                          • C:\Windows\system32\csrss.exe
                                            %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                            1⤵
                                              PID:332
                                            • C:\Windows\System32\smss.exe
                                              \SystemRoot\System32\smss.exe
                                              1⤵
                                                PID:260
                                              • C:\Windows\Explorer.EXE
                                                C:\Windows\Explorer.EXE
                                                1⤵
                                                  PID:1212
                                                  • C:\Windows\system32\rundll32.exe
                                                    rundll32.exe C:\Users\Admin\AppData\Local\Temp\828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll,#1
                                                    2⤵
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:800
                                                    • C:\Windows\SysWOW64\rundll32.exe
                                                      rundll32.exe C:\Users\Admin\AppData\Local\Temp\828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll,#1
                                                      3⤵
                                                      • Loads dropped DLL
                                                      • Enumerates connected drives
                                                      • Drops file in System32 directory
                                                      • Suspicious use of WriteProcessMemory
                                                      PID:1980
                                                      • C:\Windows\SysWOW64\rundll32mgr.exe
                                                        C:\Windows\SysWOW64\rundll32mgr.exe
                                                        4⤵
                                                        • Executes dropped EXE
                                                        • Loads dropped DLL
                                                        • Drops file in Program Files directory
                                                        • Suspicious use of WriteProcessMemory
                                                        PID:1928
                                                        • C:\Program Files (x86)\Microsoft\WaterMark.exe
                                                          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                                                          5⤵
                                                          • Executes dropped EXE
                                                          • Suspicious behavior: EnumeratesProcesses
                                                          • Suspicious use of AdjustPrivilegeToken
                                                          • Suspicious use of WriteProcessMemory
                                                          PID:1748
                                                          • C:\Windows\SysWOW64\svchost.exe
                                                            C:\Windows\system32\svchost.exe
                                                            6⤵
                                                            • Modifies WinLogon for persistence
                                                            • Drops file in System32 directory
                                                            • Drops file in Program Files directory
                                                            PID:1348
                                                          • C:\Windows\SysWOW64\svchost.exe
                                                            C:\Windows\system32\svchost.exe
                                                            6⤵
                                                            • Suspicious behavior: EnumeratesProcesses
                                                            • Suspicious use of AdjustPrivilegeToken
                                                            • Suspicious use of WriteProcessMemory
                                                            PID:672
                                                      • C:\Users\Admin\AppData\Local\Temp\hrlEA21.tmp
                                                        C:\Users\Admin\AppData\Local\Temp\hrlEA21.tmp
                                                        4⤵
                                                        • Executes dropped EXE
                                                        • Drops file in System32 directory
                                                        • Suspicious use of AdjustPrivilegeToken
                                                        • Suspicious use of WriteProcessMemory
                                                        PID:952
                                                        • C:\Windows\SysWOW64\cmd.exe
                                                          C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\hrlEA21.tmp > nul
                                                          5⤵
                                                            PID:1756
                                                  • C:\Windows\system32\wbem\wmiprvse.exe
                                                    C:\Windows\system32\wbem\wmiprvse.exe
                                                    1⤵
                                                      PID:1956
                                                    • \\?\C:\Windows\system32\wbem\WMIADAP.EXE
                                                      wmiadap.exe /F /T /R
                                                      1⤵
                                                        PID:2028

                                                      Network

                                                      MITRE ATT&CK Enterprise v6

                                                      Replay Monitor

                                                      Loading Replay Monitor...

                                                      Downloads

                                                      • C:\Program Files (x86)\Microsoft\WaterMark.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • C:\Program Files (x86)\Microsoft\WaterMark.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • C:\Users\Admin\AppData\Local\Temp\hrlEA21.tmp

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • C:\Users\Admin\AppData\Local\Temp\hrlEA21.tmp

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • C:\Windows\SysWOW64\rundll32mgr.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • C:\Windows\SysWOW64\rundll32mgr.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • C:\Windows\SysWOW64\ywkkso.exe

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • C:\Windows\SysWOW64\ywkkso.exe

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • \Program Files (x86)\Microsoft\WaterMark.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • \Program Files (x86)\Microsoft\WaterMark.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • \Users\Admin\AppData\Local\Temp\hrlEA21.tmp

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • \Users\Admin\AppData\Local\Temp\hrlEA21.tmp

                                                        Filesize

                                                        36KB

                                                        MD5

                                                        eb4ddda9e715be4be7423fc87e42c1c6

                                                        SHA1

                                                        ec541ac7cfcd55f37758f9a33137e19257307c11

                                                        SHA256

                                                        842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

                                                        SHA512

                                                        8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

                                                      • \Windows\SysWOW64\rundll32mgr.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • \Windows\SysWOW64\rundll32mgr.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        849ef19ec0155d79d4fa5bfb5657b106

                                                        SHA1

                                                        eb7e7ff208ecb40d35755d8f36e31e2482166299

                                                        SHA256

                                                        8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

                                                        SHA512

                                                        30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

                                                      • memory/672-99-0x0000000020010000-0x000000002001B000-memory.dmp

                                                        Filesize

                                                        44KB

                                                      • memory/672-96-0x0000000020010000-0x000000002001B000-memory.dmp

                                                        Filesize

                                                        44KB

                                                      • memory/980-81-0x0000000000400000-0x000000000040C000-memory.dmp

                                                        Filesize

                                                        48KB

                                                      • memory/980-83-0x0000000000400000-0x000000000040C000-memory.dmp

                                                        Filesize

                                                        48KB

                                                      • memory/1348-75-0x0000000020010000-0x0000000020022000-memory.dmp

                                                        Filesize

                                                        72KB

                                                      • memory/1348-156-0x0000000020010000-0x0000000020022000-memory.dmp

                                                        Filesize

                                                        72KB

                                                      • memory/1348-86-0x0000000020010000-0x0000000020022000-memory.dmp

                                                        Filesize

                                                        72KB

                                                      • memory/1348-92-0x0000000020010000-0x0000000020022000-memory.dmp

                                                        Filesize

                                                        72KB

                                                      • memory/1748-155-0x0000000000400000-0x0000000000421000-memory.dmp

                                                        Filesize

                                                        132KB

                                                      • memory/1748-91-0x0000000000400000-0x0000000000421000-memory.dmp

                                                        Filesize

                                                        132KB

                                                      • memory/1748-93-0x00000000003A0000-0x00000000003C1000-memory.dmp

                                                        Filesize

                                                        132KB

                                                      • memory/1928-72-0x0000000000220000-0x0000000000241000-memory.dmp

                                                        Filesize

                                                        132KB

                                                      • memory/1928-70-0x0000000000400000-0x0000000000421000-memory.dmp

                                                        Filesize

                                                        132KB

                                                      • memory/1980-90-0x0000000010000000-0x0000000010020000-memory.dmp

                                                        Filesize

                                                        128KB

                                                      • memory/1980-55-0x0000000075521000-0x0000000075523000-memory.dmp

                                                        Filesize

                                                        8KB