Analysis

  • max time kernel
    141s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-11-2022 17:48

General

  • Target

    e40081ecb6bb87bceb8fbe60569557246431b4e4bb5d2f6e370cb577265b2e3b.exe

  • Size

    84KB

  • MD5

    1548abe4734a1e91f208f54b55969580

  • SHA1

    001cfbaef0ca45f8c67878772089e0a44aa8075d

  • SHA256

    e40081ecb6bb87bceb8fbe60569557246431b4e4bb5d2f6e370cb577265b2e3b

  • SHA512

    a81c391c2586107d9837fa16621ba0972e3774995e0bb900794862a61352b43e91741c80668027468433f74c2bafedd515be4b9f9b03ed2163d76228db437ddf

  • SSDEEP

    1536:ofFYrHzmJcABxt2mE5OAkYJkz4aFQB0KAIDA9Rv5f2HLKoZ:xrTmJ/vElJkz4a6rAIk9RvgHuoZ

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Sets DLL path for service in the registry 2 TTPs 1 IoCs
  • Loads dropped DLL 7 IoCs
  • Creates a Windows Service
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: MapViewOfSection 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 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 DcomLaunch
          2⤵
            PID:584
            • C:\Windows\system32\wbem\wmiprvse.exe
              C:\Windows\system32\wbem\wmiprvse.exe
              3⤵
                PID:2036
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k NetworkService
              2⤵
                PID:272
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                2⤵
                  PID:680
                • C:\Windows\system32\sppsvc.exe
                  C:\Windows\system32\sppsvc.exe
                  2⤵
                    PID:1056
                  • C:\Windows\system32\taskhost.exe
                    "taskhost.exe"
                    2⤵
                      PID:1128
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                      2⤵
                        PID:1080
                      • C:\Windows\System32\spoolsv.exe
                        C:\Windows\System32\spoolsv.exe
                        2⤵
                          PID:972
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k netsvcs
                          2⤵
                            PID:884
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalService
                            2⤵
                              PID:844
                            • C:\Windows\System32\svchost.exe
                              C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                              2⤵
                                PID:812
                              • C:\Windows\System32\svchost.exe
                                C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                                2⤵
                                  PID:744
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k RPCSS
                                  2⤵
                                    PID:664
                                  • C:\Windows\SysWOW64\svchost.exe
                                    C:\Windows\SysWOW64\svchost.exe -k "Stysm Prorest"
                                    2⤵
                                      PID:2020
                                    • C:\Windows\SysWOW64\svchost.exe
                                      C:\Windows\SysWOW64\svchost.exe -k "Stysm Prorest"
                                      2⤵
                                      • Loads dropped DLL
                                      • Drops file in System32 directory
                                      PID:1920
                                      • C:\Windows\SysWOW64\Stysm Prorest.exe
                                        "C:\Windows\system32\Stysm Prorest.exe" "c:\users\admin\appdata\local\temp\7071712.dll",MainThread
                                        3⤵
                                        • Executes dropped EXE
                                        • Loads dropped DLL
                                        PID:1460
                                  • 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:380
                                      • 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\wbem\WMIADAP.EXE
                                            wmiadap.exe /F /T /R
                                            1⤵
                                              PID:1992
                                            • C:\Windows\Explorer.EXE
                                              C:\Windows\Explorer.EXE
                                              1⤵
                                                PID:1244
                                                • C:\Users\Admin\AppData\Local\Temp\e40081ecb6bb87bceb8fbe60569557246431b4e4bb5d2f6e370cb577265b2e3b.exe
                                                  "C:\Users\Admin\AppData\Local\Temp\e40081ecb6bb87bceb8fbe60569557246431b4e4bb5d2f6e370cb577265b2e3b.exe"
                                                  2⤵
                                                  • Sets DLL path for service in the registry
                                                  • Loads dropped DLL
                                                  • Drops file in System32 directory
                                                  • Suspicious behavior: EnumeratesProcesses
                                                  • Suspicious behavior: MapViewOfSection
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  • Suspicious use of SetWindowsHookEx
                                                  • Suspicious use of WriteProcessMemory
                                                  PID:1440
                                              • C:\Windows\system32\Dwm.exe
                                                "C:\Windows\system32\Dwm.exe"
                                                1⤵
                                                  PID:1188

                                                Network

                                                MITRE ATT&CK Enterprise v6

                                                Replay Monitor

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                                                Downloads

                                                • C:\Windows\SysWOW64\Stysm Prorest.exe

                                                  Filesize

                                                  43KB

                                                  MD5

                                                  51138beea3e2c21ec44d0932c71762a8

                                                  SHA1

                                                  8939cf35447b22dd2c6e6f443446acc1bf986d58

                                                  SHA256

                                                  5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

                                                  SHA512

                                                  794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

                                                • C:\Windows\SysWOW64\Stysm Prorest.exe

                                                  Filesize

                                                  43KB

                                                  MD5

                                                  51138beea3e2c21ec44d0932c71762a8

                                                  SHA1

                                                  8939cf35447b22dd2c6e6f443446acc1bf986d58

                                                  SHA256

                                                  5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

                                                  SHA512

                                                  794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

                                                • \??\c:\users\admin\appdata\local\temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Users\Admin\AppData\Local\Temp\7071712.dll

                                                  Filesize

                                                  26KB

                                                  MD5

                                                  8d50e0ddc6ec657765e41f5b2408561f

                                                  SHA1

                                                  3b6d7c4face9167061ed60ba09ac32e52d758d91

                                                  SHA256

                                                  0ecb3b1b56c98ba24e10541e6638afbf91cc4ac680a9770650126e6d0ccd86da

                                                  SHA512

                                                  3b0ea7689f99ff7c11a49b6ea583916013ad48adbc1603594dcdf9c69bfe23d182208e74ff906c218484bf2c1550074a7de050b39f73aa3c0f2d26f8fdb36255

                                                • \Windows\SysWOW64\Stysm Prorest.exe

                                                  Filesize

                                                  43KB

                                                  MD5

                                                  51138beea3e2c21ec44d0932c71762a8

                                                  SHA1

                                                  8939cf35447b22dd2c6e6f443446acc1bf986d58

                                                  SHA256

                                                  5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

                                                  SHA512

                                                  794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

                                                • memory/1440-54-0x0000000076181000-0x0000000076183000-memory.dmp

                                                  Filesize

                                                  8KB

                                                • memory/1440-58-0x0000000000400000-0x0000000000415000-memory.dmp

                                                  Filesize

                                                  84KB

                                                • memory/1460-60-0x0000000000000000-mapping.dmp