29b84ba0678e99da095d58abcdaa08412d4532c1fd1b0f9eb27ce9c36197e830

Analysis

max time kernel
149s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
17/05/2026, 12:11

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.4MB
Sample260517-pcvrbsfz5x
SHA256 29b84ba0678e99da095d58abcdaa08412d4532c1fd1b0f9eb27ce9c36197e830
MD5 006112fe2a992db892e3f5466527baeb
SHA1 4b1dc3a78679b50107c731ee9efc1a6c9eeca8af
SHA512 3cdccbdc7f0900421b6fa2bd841bafe715b7ee300edf36a02b220bd99784a1b09283ca22a7a613aea731c90b67d409e6281b4325a634e64da1636df88a0559aa
SSDEEP 98304:KzIus6efPUIdoaxcp8wy5c3trGOlkQ5DUOgJ9zl:KhfefPtHxcp9ym3nltDUJV
TLSH
T14E46E101B3D695B6D1BF1638D87A52696734BC049316CBBF5394BD392E32BC04E323A6
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/5484-3-0x0000000005810000-0x0000000005B02000-memory.dmp	revoked_cert_connectwise

Loads dropped DLL 11 IoCs

pid	Process
3972	MsiExec.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5360	rundll32.exe
5236	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)	\??\G:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\E:	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)	\??\T:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe

Drops file in Program Files directory 15 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.Core.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsBackstageShell.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsClient.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsFileManager.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsFileManager.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\Client.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.Client.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.ClientService.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.Windows.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.WindowsClient.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\ScreenConnect.ClientService.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\app.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\Client.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (036c5dcb409037ee)\system.config	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File created	C:\Windows\Installer\e58c57e.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\SystemTemp\~DF6F26D1CFD49D6249.TMP	msiexec.exe
File created	C:\Windows\Installer\{A14B9AF3-E37A-1DE7-DA0C-AB8E1D783F3F}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DF42A3ABF30316A443.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DF3733D0FC853C1C53.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\{A14B9AF3-E37A-1DE7-DA0C-AB8E1D783F3F}\DefaultIcon	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 created	C:\Windows\Installer\SourceHash{A14B9AF3-E37A-1DE7-DA0C-AB8E1D783F3F}	msiexec.exe
File created	C:\Windows\Installer\e58c580.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\e58c57e.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC704.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC744.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DF29ABB181DEBA3B97.TMP	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	MsiExec.exe
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

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
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
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

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-036c5dcb409037ee\URL Protocol	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee\shell	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee\shell\open	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\3FA9B41AA73E7ED1ADC0BAE8D187F3F3	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\AdvertiseFlags = "388"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\036c5dcb409037ee\\"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\Version = "419561476"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\InstanceType = "0"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList	msiexec.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\Clients = 3a0000000000	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\ProductIcon = "C:\\Windows\\Installer\\{A14B9AF3-E37A-1DE7-DA0C-AB8E1D783F3F}\\DefaultIcon"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\71FFF28C7B327DA330C6D5BC040973EE	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\Net	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\Media	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee\shell\open\command	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-036c5dcb409037ee\shell\open\command\ = "\"C:\\Program Files (x86)\\ScreenConnect Client (036c5dcb409037ee)\\ScreenConnect.WindowsClient.exe\" \"%1\""	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\PackageCode = "3FA9B41AA73E7ED1ADC0BAE8D187F3F3"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-036c5dcb409037ee\shell\open\command	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\Language = "1033"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\Assignment = "1"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\036c5dcb409037ee\\"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-036c5dcb409037ee	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\DeploymentFlags = "3"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\ProductName = "ScreenConnect Client (036c5dcb409037ee)"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\Full	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\AuthorizedLUAApp = "0"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\71FFF28C7B327DA330C6D5BC040973EE\3FA9B41AA73E7ED1ADC0BAE8D187F3F3	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\3FA9B41AA73E7ED1ADC0BAE8D187F3F3\SourceList\Media\1 = ";"	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1580	msiexec.exe
1580	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5484	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	4880	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4880	msiexec.exe
Token: SeSecurityPrivilege	1580	msiexec.exe
Token: SeCreateTokenPrivilege	4880	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4880	msiexec.exe
Token: SeLockMemoryPrivilege	4880	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4880	msiexec.exe
Token: SeMachineAccountPrivilege	4880	msiexec.exe
Token: SeTcbPrivilege	4880	msiexec.exe
Token: SeSecurityPrivilege	4880	msiexec.exe
Token: SeTakeOwnershipPrivilege	4880	msiexec.exe
Token: SeLoadDriverPrivilege	4880	msiexec.exe
Token: SeSystemProfilePrivilege	4880	msiexec.exe
Token: SeSystemtimePrivilege	4880	msiexec.exe
Token: SeProfSingleProcessPrivilege	4880	msiexec.exe
Token: SeIncBasePriorityPrivilege	4880	msiexec.exe
Token: SeCreatePagefilePrivilege	4880	msiexec.exe
Token: SeCreatePermanentPrivilege	4880	msiexec.exe
Token: SeBackupPrivilege	4880	msiexec.exe
Token: SeRestorePrivilege	4880	msiexec.exe
Token: SeShutdownPrivilege	4880	msiexec.exe
Token: SeDebugPrivilege	4880	msiexec.exe
Token: SeAuditPrivilege	4880	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4880	msiexec.exe
Token: SeChangeNotifyPrivilege	4880	msiexec.exe
Token: SeRemoteShutdownPrivilege	4880	msiexec.exe
Token: SeUndockPrivilege	4880	msiexec.exe
Token: SeSyncAgentPrivilege	4880	msiexec.exe
Token: SeEnableDelegationPrivilege	4880	msiexec.exe
Token: SeManageVolumePrivilege	4880	msiexec.exe
Token: SeImpersonatePrivilege	4880	msiexec.exe
Token: SeCreateGlobalPrivilege	4880	msiexec.exe
Token: SeCreateTokenPrivilege	4880	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4880	msiexec.exe
Token: SeLockMemoryPrivilege	4880	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4880	msiexec.exe
Token: SeMachineAccountPrivilege	4880	msiexec.exe
Token: SeTcbPrivilege	4880	msiexec.exe
Token: SeSecurityPrivilege	4880	msiexec.exe
Token: SeTakeOwnershipPrivilege	4880	msiexec.exe
Token: SeLoadDriverPrivilege	4880	msiexec.exe
Token: SeSystemProfilePrivilege	4880	msiexec.exe
Token: SeSystemtimePrivilege	4880	msiexec.exe
Token: SeProfSingleProcessPrivilege	4880	msiexec.exe
Token: SeIncBasePriorityPrivilege	4880	msiexec.exe
Token: SeCreatePagefilePrivilege	4880	msiexec.exe
Token: SeCreatePermanentPrivilege	4880	msiexec.exe
Token: SeBackupPrivilege	4880	msiexec.exe
Token: SeRestorePrivilege	4880	msiexec.exe
Token: SeShutdownPrivilege	4880	msiexec.exe
Token: SeDebugPrivilege	4880	msiexec.exe
Token: SeAuditPrivilege	4880	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4880	msiexec.exe
Token: SeChangeNotifyPrivilege	4880	msiexec.exe
Token: SeRemoteShutdownPrivilege	4880	msiexec.exe
Token: SeUndockPrivilege	4880	msiexec.exe
Token: SeSyncAgentPrivilege	4880	msiexec.exe
Token: SeEnableDelegationPrivilege	4880	msiexec.exe
Token: SeManageVolumePrivilege	4880	msiexec.exe
Token: SeImpersonatePrivilege	4880	msiexec.exe
Token: SeCreateGlobalPrivilege	4880	msiexec.exe
Token: SeCreateTokenPrivilege	4880	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4880	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4880	msiexec.exe
4880	msiexec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5484 wrote to memory of 4880	5484	ScreenConnect.ClientSetup.exe	80
PID 1580 wrote to memory of 3972	1580	msiexec.exe	82
PID 3972 wrote to memory of 5360	3972	MsiExec.exe	83
PID 1580 wrote to memory of 1752	1580	msiexec.exe	87
PID 1580 wrote to memory of 5236	1580	msiexec.exe	89

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:5484
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\036c5dcb409037ee\ScreenConnect.ClientSetup.msi"
  2⤵
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:4880

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:1580
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding A654862C7520143587E057271E22253A C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3972
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9248.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240685734 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:5360
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:1752
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding E931AFC0DCD801B04DFAEBEF0A6EDBB6
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:5236

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:2672

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

Replay Monitor

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Downloads

e58c57f.rbs

Path C:\Config.Msi\e58c57f.rbs
Size 10KB
SHA256 05d540c9a8d40cead1e3e1f30acb9a741dcc5c6028162b5edc86f63f8e60ec13
MD5 7f39d5c42ad31d9b1d806014e7f94744
SHA1 ee27d84243f0f41657a52a5ecf0afcedd1e9a928
SHA512 3b863b6ee0186cd5707195c8f58769eac2848c48a0acbbbda20ce2d4bf446b9171dab5d4c54c26700402ee7c56525a8b250e69aa74b59484e9a5b46b442d0adc
SSDEEP 192:JT431vknC7s4WZhImZhEHZ2BAx57yDoiBam6p1719zX0/kM:J21vkQsrZPZ6HZ4U57yDoiBal719zX0j
TLSH
T1D1227340724084D1F28A5F72D7830A213B72EFF89359324B4ADE91395E523D94F7E1DA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI9248.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI9248.tmp
Size 1.0MB
SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
MD5 81f945dabc576ca389348a4e7147463f
SHA1 1876786194d49de92fff0b523f0c6280bdf94e22
SHA512 3f72d5a6f482757484b0c06cb5c1e6e018a4051fe43086f77f6ea8e61ee0d08afc0ec96eac5cb01e2d8dfdabe9115d7c277cd87b7ccf9bb02bd8da0e9556504a
SSDEEP 24576:QUUGG4DlIQMi4CJXxCHzCrvPfU8GWng+A2tuHt+pbW/aU0r1d:jG4DlItQ5xJrvPfU8VgJwW/zAd
TLSH
T19D35234832E58439E2A73A320CB6A6B125BC74773670D45FA78B4A1D5FB0AD1DE31327
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

Microsoft.Deployment.WindowsInstaller.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI9248.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\MSI9248.tmp-\ScreenConnect.Core.dll
Size 538KB
SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
MD5 1db8b9fa0bdcbfaab807f715c288c19a
SHA1 fde73710ce063bbf1e377c02a1a8615cf4da1c08
SHA512 fc132764026c682e8fac1a97171731d54880c8d95566c486c731c880e750a29875ac208fb4b4dc2897dfc49beb24f77af016d846c78be75df159d3542600eb73
SSDEEP 6144:SfoUrkyyvsbvpSLmwJUoqnoezGMZf1y99tg03Xdedu1h+xE5vce/6OdCatxq/trJ:SfpkywYszKoIzGafzece/6yx/Oek
TLSH
T144C47D9233B48B2FCABF5B7BE42454980770E901F209EB5B1AD6D4BC5F633854E412E6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.InstallerActions.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI9248.tmp-\ScreenConnect.InstallerActions.dll
Size 11KB
SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
MD5 454b489378d49d17021b3e85f86ae843
SHA1 8a208ddbcd5609b2a8d2dad34a6894396e806d51
SHA512 24ee8ed25df1d43169e9c762b5e1cbaa1e0150bb07387ac5ebeda6f19b83ecbe38342fe01259ca373bcfccb653ea6533395b88a4bce29aee7354815d5253538b
SSDEEP 192:b8/Qp6lCJuV3j/XtyVNamVNG1YZfCrMmbfHJ7kjvLHbuLd9NEFb5lZ:I/cBJaDXt2NaheUrMmb/FkjvLHbuZslZ
TLSH
T1A132D50077DC533AE8BE0F789EB762910A71FB64A011DF2E18CC91569C36744AEA07B7
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.Windows.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI9248.tmp-\ScreenConnect.Windows.dll
Size 1.6MB
SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
MD5 94216eb90ca53fbb175f0ee6adbfb663
SHA1 48038f060a5042ff44a2d9a9be46368ecc8436fd
SHA512 c6c7e2a63eaccc5703acf4cb482a9e441fb6e670a9086d3ade558a597b1fd6c17f5e5b7027d835b80ebf2c071f9442bde466f313ddb8456fe0d3e4db6d53b041
SSDEEP 24576:VDhFj+Ifz3zvnXj/zXzvAAkGz8mvgtX79S+2bfh+RfmT01krTFiH4SqfKPTsUTHs:VDhJkGYYpT0+TFiH7efP
TLSH
T14B85BD41E2D364F5D46B047888BF571ABA743C040325CAFB97D4AE3A6D33BC09A36796
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.ClientSetup.msi

Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\036c5dcb409037ee\ScreenConnect.ClientSetup.msi
Size 9.5MB
SHA256 29a8ebc7437c5ce24ed5c5ebb716d799086595eeb8fa955fd101c308e09bd37a
MD5 b61c7a31f4259a93b2b34792fb13ed65
SHA1 0e23d9b8fdbbbfa3393038726c5625c82f76a452
SHA512 338b67ca5527cb4ecb4bb2cfebe45fdaa97e6b1d86f4a6f856c50170078803adb02b29f92c28da2116cf5a4da39247e0b12a6275433daf94398d3757ba3d9433
SSDEEP 196608:NHxcp9ym3nltDUJVHHxcp9ym3YHxcp9ym39Hxcp9ym3dHxcp9ym3:/GplpgGpmGpvGpPGp
TLSH
T1E0A623116BF8D278F1F12A39D876A0B1A53A7D519E23C12E2324791E2C75EC0CA63777
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSIC744.tmp

Path C:\Windows\Installer\MSIC744.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 24.6MB
SHA256 afb6ebcfc6e4a90f202d550fbc7b66e471374097e69cde364206099670c8c2d5
MD5 773d6488705f0687028d32b804a14389
SHA1 d10fde184fdc29e748dba68bd8b40be1fcab55e7
SHA512 feba1396cc0656d12a464b870cf6860bdfe989d8a004cb085c6c22a5faebbe66011b5580ae0652ad9d958b3ece1d641ca48200f25fd624f1353c703090e96657
SSDEEP 24576:Q2gmSp1JdoO/vvTLZmSuBUHq/aJZwY24WWh93JkC7p6ok+mHIZzVrPoVh:s
TLSH
T1F047C12436F92250E7F79E3C68F06A238D3A7D5B9C159E8D05461B4E0921FB0E872F5B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{003e0308-fbf7-4045-b128-572931c863d3}_OnDiskSnapshotProp

Path \??\Volume{a40cd035-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{003e0308-fbf7-4045-b128-572931c863d3}_OnDiskSnapshotProp
Size 6KB
SHA256 8bc19ed0efa1c7f3f09d0b9464f725c649424979c78eeccea4f21a057b53c70f
MD5 3d3781472f467415cca0a41e913f4f8f
SHA1 07487ba081884deb6798828ac6c50af13e4f1c95
SHA512 3d05aec05476ca3a7fff1afe0e7c15bf7867ebca369ea0351764ff605ce0315a2383a5b5b13095e38b337bc9e95d8318a4e30d2d75fde96acbd2bb9be708af16
SSDEEP 96:FyfE6QHdtvc8DD84LTHzbOHXOHBlBRQ88Sc9XE56tOSVQpu:UfEndnb++ZVm
TLSH
T14FD177085AE54711E2B3AB7228F14557A877B911EF33CB8E0298638E2670A10F975F5F
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/5360-38-0x0000000005370000-0x00000000053FC000-memory.dmp

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memory/5360-30-0x0000000005210000-0x000000000523E000-memory.dmp

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memory/5360-34-0x0000000005250000-0x000000000525A000-memory.dmp

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memory/5360-42-0x00000000055B0000-0x000000000575C000-memory.dmp

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memory/5484-8-0x0000000005500000-0x0000000005510000-memory.dmp

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memory/5484-7-0x00000000060B0000-0x0000000006656000-memory.dmp

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memory/5484-0-0x0000000005500000-0x0000000005510000-memory.dmp

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memory/5484-6-0x0000000005510000-0x00000000056BC000-memory.dmp

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memory/5484-5-0x0000000005440000-0x0000000005462000-memory.dmp

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memory/5484-4-0x00000000053B0000-0x000000000543C000-memory.dmp

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memory/5484-3-0x0000000005810000-0x0000000005B02000-memory.dmp

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memory/5484-2-0x0000000005500000-0x0000000005510000-memory.dmp

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memory/5484-1-0x0000000001610000-0x0000000001618000-memory.dmp

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