Analysis

  • max time kernel
    152s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    19/10/2022, 17:52

General

  • Target
    document8765.exe
  • Size 4.7MB
  • Sample221019-wfsjpsaed5
  • SHA256 e1d1b39589002db4260dad9f4567cbb5a07803ca1fe7a17f1ca7f9bd1f035827
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Loads dropped DLL 22 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Drops file in Windows directory 15 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 49 IoCs
  • Modifies registry class 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\document8765.exe
    "C:\Users\Admin\AppData\Local\Temp\document8765.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1848
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\setup.msi"
      2⤵
      • Enumerates connected drives
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:2012
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1248
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 3203F515C70E033C29BBD0C12718C05C C
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIFEF8.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_7077874 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        PID:268
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 05C4DE343124DF152BE9D07DA417FAB6
      2⤵
      • Loads dropped DLL
      PID:1268
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DC90FC3EE929ADBA8507A2911CF1DC34 M Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      PID:1592
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:1724
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000598" "0000000000000494"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:1548
    • C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-l7l8l9-relay.screenconnect.com&p=443&s=71678d2b-1c69-4940-9923-3c1402a4105a&k=BgIAAACkAABSU0ExAAgAAAEAAQC9cxw5UA763FPcVEu4K7lTUZPe40uWy%2fdpeqfjnhw6qPCnMz1zFVt6J1HHp%2b9%2fhXseaHv7tHKfAevkRMosxtdVUlRlFjGO1E0lztj6BuXXY3hOn%2b9zOMiD85jSb5nrrk4O4IhgV9GNihZS3aAMUcTWlSUzCOGSECigjs5Sg8kxq5CHz1RuGp6Wbv7SO9LEriAGZj%2fYQU%2fq0X9%2bFDnKAKtBYkUdW3Muf9ewnItCRM9XErqohYafqh04mlqluyGqfx%2bAMezEuQDgFHQPIurisVhSinHWRCO4WDLKpaoeWneMJ3BMj6ReFvhaXVGW0u%2fPMkXzYLB2sMMBcibeuJV1yczL&t=&c=&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Sets service image path in registry
      • Loads dropped DLL
      • Drops file in System32 directory
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1360
      • C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe" "RunRole" "b527f962-40b7-4486-a46f-c3f566f14e1c" "User"
        2⤵
        • Executes dropped EXE
        PID:288

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\Client.en-US.resources
          • Size 42KB
          • SHA256 715cea8a7c4544691c00ee22a93cd42889e433f95786a2c509aa8ad10b3b316e
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\Client.resources
          • Size 2KB
          • SHA256 64da2cfeacfcba97cad701da9288618bc42a20f69dd4a0fe5652ce49ef92524c
          • MD5 SHA1 SHA512

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Client.dll
          • Size 174KB
          • SHA256 79394efd5794ce8d11fc859168358b849c88c0d5bc4e1e660f9fefc3cecd936b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.dll
          • Size 36KB
          • SHA256 da557c40b69dd91886d9df8d87b7c67f0d6466735c4c6e7fcd10217713ec50c9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.exe
          • Size 94KB
          • SHA256 334d431b85249829f240f1af0cb192e57b6c3bc94239b1143880fe45190a0c15
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Core.dll
          • Size 466KB
          • SHA256 15b94caf2a52ad2296d099a2b0666decab0d00396ff5d94726c158b4a34c4317
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 702fad4cebc39c7b60d79b0533815dedbbc90e0d860ffda3c59930d07a50eb5b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe
          • Size 555KB
          • SHA256 825955e76f8a8cd76fe601d2577e485af49b26b64ddad9eb1200bcb6c46ebe35
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe
          • Size 555KB
          • SHA256 825955e76f8a8cd76fe601d2577e485af49b26b64ddad9eb1200bcb6c46ebe35
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\system.config
          • Size 906B
          • SHA256 97fa3b558b41555ba23d4370e41967834bd15641e3a7154cb1803396d0e1d5b9
          • MD5 SHA1 SHA512

          MSIFEF8.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIFEF8.tmp
          • Size 1016KB
          • SHA256 87426736b1157828ba843bac4adf5bed17dc37db7c411c963e1529d4d21d66b0
          • MD5 SHA1 SHA512 SSDEEP

          setup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\setup.msi
          • Size 2.5MB
          • SHA256 caae3fd1692ee42d81529fb83365ffdc3db9ae97e8d1097c296354e0de98cc8b
          • MD5 SHA1 SHA512 SSDEEP

          MSI1E10.tmp

          • Path C:\Windows\Installer\MSI1E10.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          MSI8EF9.tmp

          • Path C:\Windows\Installer\MSI8EF9.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Client.dll
          • Size 174KB
          • SHA256 79394efd5794ce8d11fc859168358b849c88c0d5bc4e1e660f9fefc3cecd936b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Client.dll
          • Size 174KB
          • SHA256 79394efd5794ce8d11fc859168358b849c88c0d5bc4e1e660f9fefc3cecd936b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.dll
          • Size 36KB
          • SHA256 da557c40b69dd91886d9df8d87b7c67f0d6466735c4c6e7fcd10217713ec50c9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.dll
          • Size 36KB
          • SHA256 da557c40b69dd91886d9df8d87b7c67f0d6466735c4c6e7fcd10217713ec50c9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.dll
          • Size 36KB
          • SHA256 da557c40b69dd91886d9df8d87b7c67f0d6466735c4c6e7fcd10217713ec50c9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.ClientService.dll
          • Size 36KB
          • SHA256 da557c40b69dd91886d9df8d87b7c67f0d6466735c4c6e7fcd10217713ec50c9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Core.dll
          • Size 466KB
          • SHA256 15b94caf2a52ad2296d099a2b0666decab0d00396ff5d94726c158b4a34c4317
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Core.dll
          • Size 466KB
          • SHA256 15b94caf2a52ad2296d099a2b0666decab0d00396ff5d94726c158b4a34c4317
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 702fad4cebc39c7b60d79b0533815dedbbc90e0d860ffda3c59930d07a50eb5b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 702fad4cebc39c7b60d79b0533815dedbbc90e0d860ffda3c59930d07a50eb5b
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe
          • Size 555KB
          • SHA256 825955e76f8a8cd76fe601d2577e485af49b26b64ddad9eb1200bcb6c46ebe35
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path \Program Files (x86)\ScreenConnect Client (0e2f8d025e383f56)\ScreenConnect.WindowsClient.exe
          • Size 555KB
          • SHA256 825955e76f8a8cd76fe601d2577e485af49b26b64ddad9eb1200bcb6c46ebe35
          • MD5 SHA1 SHA512 SSDEEP

          MSIFEF8.tmp

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp
          • Size 1016KB
          • SHA256 87426736b1157828ba843bac4adf5bed17dc37db7c411c963e1529d4d21d66b0
          • MD5 SHA1 SHA512 SSDEEP

          MSIFEF8.tmp

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp
          • Size 1016KB
          • SHA256 87426736b1157828ba843bac4adf5bed17dc37db7c411c963e1529d4d21d66b0
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\ScreenConnect.Core.dll
          • Size 466KB
          • SHA256 15b94caf2a52ad2296d099a2b0666decab0d00396ff5d94726c158b4a34c4317
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\ScreenConnect.Core.dll
          • Size 466KB
          • SHA256 15b94caf2a52ad2296d099a2b0666decab0d00396ff5d94726c158b4a34c4317
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\ScreenConnect.InstallerActions.dll
          • Size 20KB
          • SHA256 29e3e009d17c754af1adc44b3008f877a0068bf43b7dd989a74ba569dc3710f6
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path \Users\Admin\AppData\Local\Temp\MSIFEF8.tmp-\ScreenConnect.InstallerActions.dll
          • Size 20KB
          • SHA256 29e3e009d17c754af1adc44b3008f877a0068bf43b7dd989a74ba569dc3710f6
          • MD5 SHA1 SHA512 SSDEEP

          MSI1E10.tmp

          • Path \Windows\Installer\MSI1E10.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          MSI8EF9.tmp

          • Path \Windows\Installer\MSI8EF9.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          memory/268-73-0x0000000000820000-0x000000000084E000-memory.dmp

          memory/268-79-0x0000000002330000-0x00000000023AC000-memory.dmp

          memory/268-76-0x0000000000890000-0x000000000089C000-memory.dmp

          memory/288-122-0x0000000000240000-0x0000000000250000-memory.dmp

          memory/288-121-0x000000001AE60000-0x000000001AFFE000-memory.dmp

          memory/288-120-0x0000000000520000-0x000000000059C000-memory.dmp

          memory/288-119-0x00000000002E0000-0x0000000000312000-memory.dmp

          memory/288-118-0x0000000000250000-0x00000000002DE000-memory.dmp

          memory/1248-63-0x000007FEFBCA1000-0x000007FEFBCA3000-memory.dmp

          memory/1360-109-0x0000000003D10000-0x0000000003EAE000-memory.dmp

          memory/1360-100-0x0000000000940000-0x0000000000972000-memory.dmp

          memory/1360-95-0x0000000000520000-0x0000000000530000-memory.dmp

          memory/1360-104-0x00000000033A0000-0x000000000341C000-memory.dmp

          memory/1360-92-0x0000000000520000-0x0000000000530000-memory.dmp

          memory/1848-55-0x0000000004F50000-0x00000000051C4000-memory.dmp

          memory/1848-59-0x0000000076091000-0x0000000076093000-memory.dmp

          memory/1848-56-0x0000000000B80000-0x0000000000BFC000-memory.dmp

          memory/1848-57-0x00000000005A0000-0x00000000005B8000-memory.dmp

          memory/1848-54-0x0000000000260000-0x0000000000268000-memory.dmp

          memory/1848-58-0x0000000004CD0000-0x0000000004E6E000-memory.dmp