c01666d1403c50854435c95febd48bc93d1a176f1d446dd58186ed102f1c2a20

Analysis

max time kernel
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/08/2026, 16:53

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.4MB
Sample260831-vd4crayyfv
SHA256 c01666d1403c50854435c95febd48bc93d1a176f1d446dd58186ed102f1c2a20
MD5 07013ad4ee3f650891656fb801449be9
SHA1 f03c9290411b85f93f5ddeff9b853f0a36bbd111
SHA512 f77ec71beea3ae8c6a1fe0eb46857f67967308400d55f55e9d710cf047d40696175aa4ac41205884818296812ab54d9a26af8f0aea1b8e95ab226ec262592a97
SSDEEP 49152:YEEL5cx5xTkYJkGYYpT0+TFiH7efP8Q1yJJ4ZD1F5z97oL1YbGQ+okRPGHpRPqM8:REs6efPNwJ4t1h0cG5FGJRPxow8O
TLSH
T14946E111B3DA95B9D47F063CD87A82A99A74BC044712C7EF53D4BD2D2D32BC05A323A6
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

discovery ransomware revoked_codesign

Malware Config

Signatures

Signed with revoked ConnectWise certificate 1 IoCs

Binary is signed using a ConnectWise certificate revoked for key compromise.

revoked_codesign

resource	yara_rule
behavioral2/memory/4520-2-0x0000000005760000-0x0000000005A50000-memory.dmp	revoked_cert_connectwise

Loads dropped DLL 11 IoCs

pid	Process
3176	MsiExec.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
3168	rundll32.exe
4432	MsiExec.exe

Enumerates connected drives 3 TTPs 46 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe

Drops file in Program Files directory 16 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\Client.Override.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\system.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.Client.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsFileManager.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.ClientService.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsClient.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsClient.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsFileManager.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\Client.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.ClientService.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.WindowsBackstageShell.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\app.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\Client.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.Core.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (de28c68c89fb2fa2)\ScreenConnect.Windows.dll	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File created	C:\Windows\Installer\SourceHash{1D8CA73B-C156-87FE-753E-495F0F7D8D8F}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB695.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DF0B2254E78AD28836.TMP	msiexec.exe
File created	C:\Windows\Installer\e59afb1.msi	msiexec.exe
File created	C:\Windows\SystemTemp\~DFECEF3834996AFE04.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\SystemTemp\~DF5CF7DFC668608C08.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIB675.tmp	msiexec.exe
File created	C:\Windows\Installer\{1D8CA73B-C156-87FE-753E-495F0F7D8D8F}\DefaultIcon	msiexec.exe
File created	C:\Windows\Installer\e59afaf.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\{1D8CA73B-C156-87FE-753E-495F0F7D8D8F}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DFB40D243A7BF9DEF5.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\e59afaf.msi	msiexec.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ScreenConnect.ClientSetup.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MsiExec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MsiExec.exe

Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe

Modifies data under HKEY_USERS 3 IoCs

description	ioc	Process
Key deleted	\REGISTRY\USER\.DEFAULT\SOFTWARE\CLASSES\LOCAL SETTINGS\MUICACHE\27\52C64B7E	msiexec.exe
Key deleted	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27	msiexec.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\28	msiexec.exe

Modifies registry class 32 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\URL Protocol	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\B37AC8D1651CEF7857E394F5F0D7D8F8\Full	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\DeploymentFlags = "3"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\shell\open\command\ = "\"C:\\Program Files (x86)\\ScreenConnect Client (de28c68c89fb2fa2)\\ScreenConnect.WindowsClient.exe\" \"%1\""	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\AuthorizedLUAApp = "0"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\24.3.7.9067\\de28c68c89fb2fa2\\"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\shell\open	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\Language = "1033"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\Assignment = "1"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\24.3.7.9067\\de28c68c89fb2fa2\\"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-de28c68c89fb2fa2	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\shell	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\InstanceType = "0"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\899672AE88812619ED826CC898BFF22A\B37AC8D1651CEF7857E394F5F0D7D8F8	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\Net	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\Media	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList\Media\1 = ";"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-de28c68c89fb2fa2\shell\open\command	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2\shell\open\command	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\B37AC8D1651CEF7857E394F5F0D7D8F8	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\ProductName = "ScreenConnect Client (de28c68c89fb2fa2)"	msiexec.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\Clients = 3a0000000000	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-de28c68c89fb2fa2	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\PackageCode = "B37AC8D1651CEF7857E394F5F0D7D8F8"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\AdvertiseFlags = "388"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\ProductIcon = "C:\\Windows\\Installer\\{1D8CA73B-C156-87FE-753E-495F0F7D8D8F}\\DefaultIcon"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\899672AE88812619ED826CC898BFF22A	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\Version = "402849799"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\B37AC8D1651CEF7857E394F5F0D7D8F8\SourceList	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
6116	msiexec.exe
6116	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4520	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	4328	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4328	msiexec.exe
Token: SeSecurityPrivilege	6116	msiexec.exe
Token: SeCreateTokenPrivilege	4328	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4328	msiexec.exe
Token: SeLockMemoryPrivilege	4328	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4328	msiexec.exe
Token: SeMachineAccountPrivilege	4328	msiexec.exe
Token: SeTcbPrivilege	4328	msiexec.exe
Token: SeSecurityPrivilege	4328	msiexec.exe
Token: SeTakeOwnershipPrivilege	4328	msiexec.exe
Token: SeLoadDriverPrivilege	4328	msiexec.exe
Token: SeSystemProfilePrivilege	4328	msiexec.exe
Token: SeSystemtimePrivilege	4328	msiexec.exe
Token: SeProfSingleProcessPrivilege	4328	msiexec.exe
Token: SeIncBasePriorityPrivilege	4328	msiexec.exe
Token: SeCreatePagefilePrivilege	4328	msiexec.exe
Token: SeCreatePermanentPrivilege	4328	msiexec.exe
Token: SeBackupPrivilege	4328	msiexec.exe
Token: SeRestorePrivilege	4328	msiexec.exe
Token: SeShutdownPrivilege	4328	msiexec.exe
Token: SeDebugPrivilege	4328	msiexec.exe
Token: SeAuditPrivilege	4328	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4328	msiexec.exe
Token: SeChangeNotifyPrivilege	4328	msiexec.exe
Token: SeRemoteShutdownPrivilege	4328	msiexec.exe
Token: SeUndockPrivilege	4328	msiexec.exe
Token: SeSyncAgentPrivilege	4328	msiexec.exe
Token: SeEnableDelegationPrivilege	4328	msiexec.exe
Token: SeManageVolumePrivilege	4328	msiexec.exe
Token: SeImpersonatePrivilege	4328	msiexec.exe
Token: SeCreateGlobalPrivilege	4328	msiexec.exe
Token: SeCreateTokenPrivilege	4328	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4328	msiexec.exe
Token: SeLockMemoryPrivilege	4328	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4328	msiexec.exe
Token: SeMachineAccountPrivilege	4328	msiexec.exe
Token: SeTcbPrivilege	4328	msiexec.exe
Token: SeSecurityPrivilege	4328	msiexec.exe
Token: SeTakeOwnershipPrivilege	4328	msiexec.exe
Token: SeLoadDriverPrivilege	4328	msiexec.exe
Token: SeSystemProfilePrivilege	4328	msiexec.exe
Token: SeSystemtimePrivilege	4328	msiexec.exe
Token: SeProfSingleProcessPrivilege	4328	msiexec.exe
Token: SeIncBasePriorityPrivilege	4328	msiexec.exe
Token: SeCreatePagefilePrivilege	4328	msiexec.exe
Token: SeCreatePermanentPrivilege	4328	msiexec.exe
Token: SeBackupPrivilege	4328	msiexec.exe
Token: SeRestorePrivilege	4328	msiexec.exe
Token: SeShutdownPrivilege	4328	msiexec.exe
Token: SeDebugPrivilege	4328	msiexec.exe
Token: SeAuditPrivilege	4328	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4328	msiexec.exe
Token: SeChangeNotifyPrivilege	4328	msiexec.exe
Token: SeRemoteShutdownPrivilege	4328	msiexec.exe
Token: SeUndockPrivilege	4328	msiexec.exe
Token: SeSyncAgentPrivilege	4328	msiexec.exe
Token: SeEnableDelegationPrivilege	4328	msiexec.exe
Token: SeManageVolumePrivilege	4328	msiexec.exe
Token: SeImpersonatePrivilege	4328	msiexec.exe
Token: SeCreateGlobalPrivilege	4328	msiexec.exe
Token: SeCreateTokenPrivilege	4328	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4328	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4328	msiexec.exe
4328	msiexec.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4328	msiexec.exe
6116	msiexec.exe
3176	MsiExec.exe
4432	MsiExec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 4328	4520	ScreenConnect.ClientSetup.exe	89
PID 6116 wrote to memory of 3176	6116	msiexec.exe	91
PID 3176 wrote to memory of 3168	3176	MsiExec.exe	92
PID 6116 wrote to memory of 1792	6116	msiexec.exe	97
PID 6116 wrote to memory of 4432	6116	msiexec.exe	99

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
"C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4520
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\24.3.7.9067\de28c68c89fb2fa2\ScreenConnect.ClientSetup.msi"
  2⤵
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:4328

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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:6116
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 377AA80A6EC57DA4DCE5438496618F30 C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240736609 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3168
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:1792
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 37C7651D20F3429ACB2F3F0464BE2E9D
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:4432

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:120

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

e59afb0.rbs

Path C:\Config.Msi\e59afb0.rbs
Size 10KB
SHA256 801c04db1f0b9e2a5d90bf31368687c312e0b849a04f7bde1e9196a91e6034f0
MD5 9b61fdf2f887a555c2cfb465eb59d02c
SHA1 6711f81161a5a5e6299017963e659982f72fc093
SHA512 11b6c5f1ecef656bcba4b83460a16aa98087a56e5819ba65c15081bf5eb11da5b1c513f79275262528f2044a66cb5444b419e3157b4a10edd4f70f8fbedb396f
SSDEEP 96:JRrDKtAhQGvf9eRC+/+ILrmUWIHCsThqsUWIHC6jKGiIThq2HJ65T1dBIx+CCipd:JJDaH7RCuZ1iIa1iGAtxipd
TLSH
T17922DB913609B2E2F2871B31D74B0A203B36DED96311225F0ACC693D9E627C597BD6C7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI58B5.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp
Size 1.0MB
SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
MD5 8a8767f589ea2f2c7496b63d8ccc2552
SHA1 cc5de8dd18e7117d8f2520a51edb1d165cae64b0
SHA512 518231213ca955acdf37b4501fde9c5b15806d4fc166950eb8706e8d3943947cf85324faee806d7df828485597eceffcfa05ca1a5d8ab1bd51ed12df963a1fe4
SSDEEP 24576:QUUGGHn+rUGemcPe9MpKL4Plb2sZWV+tLv0QYu5OPthT+gd:jGHpRPqMpvlqs0O4iO2k
TLSH
T18C35231873E9C436F5E679385E32A1D205FCBE764E70904E6B99292C0DB0F82D6B4763
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Microsoft.Deployment.WindowsInstaller.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp-\Microsoft.Deployment.WindowsInstaller.dll
Size 172KB
SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
MD5 5ef88919012e4a3d8a1e2955dc8c8d81
SHA1 c0cfb830b8f1d990e3836e0bcc786e7972c9ed62
SHA512 4544565b7d69761f9b4532cc85e7c654e591b2264eb8da28e60a058151030b53a99d1b2833f11bfc8acc837eecc44a7d0dbd8bc7af97fc0e0f4938c43f9c2684
SSDEEP 3072:FkfZS7FUguxN+77b1W5GR69UgoCaf8TpCnfKlRUjW01Ky4:x+c7b1W4R6joxfQE
TLSH
T14E045B2563FC473ECAEF87B4E2624251E7B2E2E97113DB0DDC8541AA2522780F792753
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.Core.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp-\ScreenConnect.Core.dll
Size 536KB
SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
MD5 14e7489ffebbb5a2ea500f796d881ad9
SHA1 0323ee0e1faa4aa0e33fb6c6147290aa71637ebd
SHA512 2110113240b7d803d8271139e0a2439dbc86ae8719ecd8b132bbda2520f22dc3f169598c8e966ac9c0a40e617219cb8fe8aac674904f6a1ae92d4ac1e20627cd
SSDEEP 12288:xC2YKhQCNc6kVTplfWL/YTHUYCBdySISYz:HhE6O7WL/EC
TLSH
T12BC47D2233AC9A2EC56E133BB072915DC5F0E906351AF79F76C5E5BC2EC27450E112EA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.InstallerActions.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp-\ScreenConnect.InstallerActions.dll
Size 11KB
SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
MD5 73a24164d8408254b77f3a2c57a22ab4
SHA1 ea0215721f66a93d67019d11c4e588a547cc2ad6
SHA512 650d4320d9246aaecd596ac8b540bf7612ec7a8f60ecaa6e9c27b547b751386222ab926d0c915698d0bb20556475da507895981c072852804f0b42fdda02b844
SSDEEP 192:V8/Qp6lCJuV3jHXtyVNamVNG1YZfCrMmbfHJ7kjvLjbuLd9NEFbM64:y/cBJaLXt2NaheUrMmb/FkjvLjbuZj64
TLSH
T1F932E70077DC533AE8BE1F78EEB361910A71FB64A011DF2E18CCA1569C367449EA07A3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.Windows.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI58B5.tmp-\ScreenConnect.Windows.dll
Size 1.6MB
SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
MD5 9ad3964ba3ad24c42c567e47f88c82b2
SHA1 6b4b581fc4e3ecb91b24ec601daa0594106bcc5d
SHA512 ce557a89c0fe6de59046116c1e262a36bbc3d561a91e44dcda022bef72cb75742c8b01bedcc5b9b999e07d8de1f94c665dd85d277e981b27b6bfebeaf9e58097
SSDEEP 24576:dx5xeYkYFj+Ifz3zvnXj/zXzvAAkGz8mvgtX79S+2bfh+RfmT01krTFiH4SqfKPo:dx5xTkYJkGYYpT0+TFiH7efP
TLSH
T1DC85BD41E2C365F5D46B047888BF572ABA743C080315CAFB97D4AE396D33BC09A36756
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.ClientSetup.msi

Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\24.3.7.9067\de28c68c89fb2fa2\ScreenConnect.ClientSetup.msi
Size 11.3MB
SHA256 1a679cbf23a745fa10bbf350f326aad3ce77df2476a09794840cd077ee59edf2
MD5 7fd8460d1708a950e57037f6eef01eea
SHA1 1965dcd6b1028bd514731397b6abab2760cc3d09
SHA512 604facf407aa0ae8be843c10ebf644a47bfdd4d2134bc369e35cb3237b312560568c337eb4ec5e1222a7ebe8a52b6a8cb985f450578809385b6d916e2659fa23
SSDEEP 196608:bWh0cGwlWh0cG4Wh0cGCWh0cG9Wh0cGsWh0cG:bWacjWacdWactWacUWac7Wac
TLSH
T1E7C6232523FD441AE8F74A79ED3682F45D72BE68CF21C11E9328B90D2A74D4096727B3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSIB695.tmp

Path C:\Windows\Installer\MSIB695.tmp
Size 202KB
SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
MD5 ba84dd4e0c1408828ccc1de09f585eda
SHA1 e8e10065d479f8f591b9885ea8487bc673301298
SHA512 7a38418f6ee8dbc66fab2cd5ad8e033e761912efc465daa484858d451da4b8576079fe90fd3b6640410edc8b3cac31c57719898134f246f4000d60a252d88290
SSDEEP 3072:X9LUHM7ptZ8UKOGw5vMWSuRy1YaDJkflQn3H+QDO/6Q+cxbr0qMG:XuH2aCGw1ST1wQLdqv
TLSH
T129147C326494803EE7F91A36D93E9A61AE7DF6241760C99EC3848C0E5D604D06BF7B27
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

metadata-2

Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
Size 26.1MB
SHA256 ba7e37ee43c29e1c4060119bece7ed96e470acad5dc599cebede890b65932104
MD5 53610ca1d61e4d5f0e08f1561bb43735
SHA1 e2c0053ae46c7658475fdbeec493c7343470fb16
SHA512 f0429360abe7bfad9c1e70ac2b68233315db4778a5d9d4399dc9741df884296ca0fdf3aeab6121edb0bad733150a77e49189abdd689c3d6990e8e322ce02ef87
SSDEEP 24576:OFo3DMPzdoO/vvTL/yAsMilQPrOWX7rf0R6e9BCE65iqpLNMMoR2s12NoeC:cH0
TLSH
T11C57B51436F92100E7F79E3CA8F06A234D397D5BAC19DE8D45511B8E0922F71E872F6A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{3a3dc1f0-a072-472d-aef3-8b57c9f6905a}_OnDiskSnapshotProp

Path \??\Volume{c61fbfff-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{3a3dc1f0-a072-472d-aef3-8b57c9f6905a}_OnDiskSnapshotProp
Size 6KB
SHA256 193bbcecd32e2ce0a8e1e1971129c395ea3711291603054113c33abb2f34df12
MD5 51d2ab50a2cba213a509117b393337ea
SHA1 72a4283933c93adc64c438d7bf05b943591869d5
SHA512 a5541d1b8c2b249668aace843fcab1f4e710c2a52fa56eceeae3e84064b56b3a80564675207d333cb572b51e15d897618e425d7999b9ef692179dea9043c595f
SSDEEP 96:FDkAW5muJlDvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpu:efVJl/b++uVm
TLSH
T1E0D1890C5AE54311E2B3AB3129F18557A837B911EF33CB8E0294238E6671A11F935F6B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3168-40-0x0000000006100000-0x000000000618C000-memory.dmp

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memory/3168-32-0x0000000003FC0000-0x0000000003FEE000-memory.dmp

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memory/3168-44-0x0000000006460000-0x000000000660A000-memory.dmp

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memory/3168-36-0x0000000004000000-0x000000000400A000-memory.dmp

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memory/4520-7-0x0000000005480000-0x000000000562A000-memory.dmp

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memory/4520-9-0x0000000074810000-0x0000000074FCC000-memory.dmp

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memory/4520-6-0x0000000074810000-0x0000000074FCC000-memory.dmp

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memory/4520-8-0x0000000006010000-0x00000000065CA000-memory.dmp

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memory/4520-0-0x0000000074822000-0x0000000074823000-memory.dmp

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memory/4520-12-0x0000000074810000-0x0000000074FCC000-memory.dmp

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memory/4520-10-0x0000000074810000-0x0000000074FCC000-memory.dmp

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memory/4520-5-0x0000000005460000-0x0000000005482000-memory.dmp

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memory/4520-4-0x0000000074810000-0x0000000074FCC000-memory.dmp

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memory/4520-3-0x00000000053B0000-0x000000000543C000-memory.dmp

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memory/4520-2-0x0000000005760000-0x0000000005A50000-memory.dmp

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memory/4520-1-0x00000000016B0000-0x00000000016B8000-memory.dmp

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memory/6116-87-0x00000159A7A50000-0x00000159A83F4000-memory.dmp

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