fd54e12a3dde03c477c48d8f8d4d070bc691cf386154f0df5b42e3c561450538

Analysis

max time kernel
148s
max time network
142s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/10/2026, 12:19

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.5MB
Sample261002-phpr9stt4q
SHA256 fd54e12a3dde03c477c48d8f8d4d070bc691cf386154f0df5b42e3c561450538
MD5 f9c9675e02190e6df7d376d5b6a61e48
SHA1 e3d114fdbb3ed84d3d0f3d89a42405f7b44cc2f4
SHA512 802b2ef2611e7aa131f135e3252edac14bb1d296ac39e3867dc5c3ff72572ca80f7f772e5ee222d0f58062b80f8fe7b7dfcb3f18d295ee03da5cc3f934f1f3bb
SSDEEP 98304:UzIus6efPUIdoaxcp8wy5c3trGOlkQ5DUOgJ9zl:UhfefPtHxcp9ym3nltDUJV
TLSH
T1A546E111B3D695B6D1BF1638D87A52656774BC048312CBBF5394BD392E32BC08E323A6
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/4936-3-0x00000000055F0000-0x00000000058E2000-memory.dmp	revoked_cert_connectwise

Loads dropped DLL 11 IoCs

pid	Process
5456	MsiExec.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
4264	rundll32.exe
2220	MsiExec.exe

Enumerates connected drives 3 TTPs 47 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)	\??\D:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
	\??\F:\	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsBackstageShell.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\app.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\Client.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsFileManager.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.ClientService.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\Client.Override.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\Client.Override.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\system.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.ClientService.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.Core.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.Windows.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsClient.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsFileManager.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.Client.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsClient.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\Client.resources	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\e59e862.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File created	C:\Windows\SystemTemp\~DFED4F0C0C5087817C.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DF10DCF9D771F4036B.TMP	msiexec.exe
File created	C:\Windows\Installer\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DFAEA28EEF924ABA6C.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DFB624F1FC48B13BD1.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIEF1A.tmp	msiexec.exe
File created	C:\Windows\Installer\e59e864.msi	msiexec.exe
File created	C:\Windows\Installer\e59e862.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\SourceHash{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIEEEA.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\DefaultIcon	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	rundll32.exe
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

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 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 = 00000000040000000463f4e358e8ea170000000000000000000000000000000000000000000000000000000000000000000000000000000000001071020000000000c01200000000000000000000000027010100008838010463f4e30000000000001071020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d0830200000000006025c501000000000000000000000700010000e841010463f4e3000000000000d08302000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9c701000000000000050000000000000000000000070001000098d4e30463f4e300000000000030a9c7010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9cc0100000000000005000000000000000000000007000100009854e60463f4e300000000000030a9cc01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	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
Key created	\REGISTRY\MACHINE\Software\Classes\sc-855dc423e2405ffa\shell\open\command	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Language = "1033"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\InstanceType = "0"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell\open\command	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\DeploymentFlags = "3"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\55B90CCB32C8B5A658D54C322E04F5AF	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-855dc423e2405ffa	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell\open\command\ = "\"C:\\Program Files (x86)\\ScreenConnect Client (855dc423e2405ffa)\\ScreenConnect.WindowsClient.exe\" \"%1\""	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\AuthorizedLUAApp = "0"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell\open	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\ProductName = "ScreenConnect Client (855dc423e2405ffa)"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\AdvertiseFlags = "388"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\ProductIcon = "C:\\Windows\\Installer\\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\\DefaultIcon"	msiexec.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Clients = 3a0000000000	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\URL Protocol	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\55B90CCB32C8B5A658D54C322E04F5AF\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Media	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\PackageCode = "C4D8EB59FC9BAF35F52C6917D79E6EE2"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Version = "419561476"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\C4D8EB59FC9BAF35F52C6917D79E6EE2\Full	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Assignment = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Net	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\855dc423e2405ffa\\"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Media\1 = ";"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\855dc423e2405ffa\\"	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4072	msiexec.exe
4072	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	3236	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3236	msiexec.exe
Token: SeSecurityPrivilege	4072	msiexec.exe
Token: SeCreateTokenPrivilege	3236	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3236	msiexec.exe
Token: SeLockMemoryPrivilege	3236	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3236	msiexec.exe
Token: SeMachineAccountPrivilege	3236	msiexec.exe
Token: SeTcbPrivilege	3236	msiexec.exe
Token: SeSecurityPrivilege	3236	msiexec.exe
Token: SeTakeOwnershipPrivilege	3236	msiexec.exe
Token: SeLoadDriverPrivilege	3236	msiexec.exe
Token: SeSystemProfilePrivilege	3236	msiexec.exe
Token: SeSystemtimePrivilege	3236	msiexec.exe
Token: SeProfSingleProcessPrivilege	3236	msiexec.exe
Token: SeIncBasePriorityPrivilege	3236	msiexec.exe
Token: SeCreatePagefilePrivilege	3236	msiexec.exe
Token: SeCreatePermanentPrivilege	3236	msiexec.exe
Token: SeBackupPrivilege	3236	msiexec.exe
Token: SeRestorePrivilege	3236	msiexec.exe
Token: SeShutdownPrivilege	3236	msiexec.exe
Token: SeDebugPrivilege	3236	msiexec.exe
Token: SeAuditPrivilege	3236	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3236	msiexec.exe
Token: SeChangeNotifyPrivilege	3236	msiexec.exe
Token: SeRemoteShutdownPrivilege	3236	msiexec.exe
Token: SeUndockPrivilege	3236	msiexec.exe
Token: SeSyncAgentPrivilege	3236	msiexec.exe
Token: SeEnableDelegationPrivilege	3236	msiexec.exe
Token: SeManageVolumePrivilege	3236	msiexec.exe
Token: SeImpersonatePrivilege	3236	msiexec.exe
Token: SeCreateGlobalPrivilege	3236	msiexec.exe
Token: SeCreateTokenPrivilege	3236	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3236	msiexec.exe
Token: SeLockMemoryPrivilege	3236	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3236	msiexec.exe
Token: SeMachineAccountPrivilege	3236	msiexec.exe
Token: SeTcbPrivilege	3236	msiexec.exe
Token: SeSecurityPrivilege	3236	msiexec.exe
Token: SeTakeOwnershipPrivilege	3236	msiexec.exe
Token: SeLoadDriverPrivilege	3236	msiexec.exe
Token: SeSystemProfilePrivilege	3236	msiexec.exe
Token: SeSystemtimePrivilege	3236	msiexec.exe
Token: SeProfSingleProcessPrivilege	3236	msiexec.exe
Token: SeIncBasePriorityPrivilege	3236	msiexec.exe
Token: SeCreatePagefilePrivilege	3236	msiexec.exe
Token: SeCreatePermanentPrivilege	3236	msiexec.exe
Token: SeBackupPrivilege	3236	msiexec.exe
Token: SeRestorePrivilege	3236	msiexec.exe
Token: SeShutdownPrivilege	3236	msiexec.exe
Token: SeDebugPrivilege	3236	msiexec.exe
Token: SeAuditPrivilege	3236	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3236	msiexec.exe
Token: SeChangeNotifyPrivilege	3236	msiexec.exe
Token: SeRemoteShutdownPrivilege	3236	msiexec.exe
Token: SeUndockPrivilege	3236	msiexec.exe
Token: SeSyncAgentPrivilege	3236	msiexec.exe
Token: SeEnableDelegationPrivilege	3236	msiexec.exe
Token: SeManageVolumePrivilege	3236	msiexec.exe
Token: SeImpersonatePrivilege	3236	msiexec.exe
Token: SeCreateGlobalPrivilege	3236	msiexec.exe
Token: SeCreateTokenPrivilege	3236	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3236	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3236	msiexec.exe
3236	msiexec.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3236	msiexec.exe
4072	msiexec.exe
5456	MsiExec.exe
2220	MsiExec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 3236	4936	ScreenConnect.ClientSetup.exe	88
PID 4072 wrote to memory of 5456	4072	msiexec.exe	90
PID 5456 wrote to memory of 4264	5456	MsiExec.exe	91
PID 4072 wrote to memory of 4372	4072	msiexec.exe	96
PID 4072 wrote to memory of 2220	4072	msiexec.exe	98

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:4936
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\855dc423e2405ffa\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:3236

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:4072
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 9DA328BE632A0C5C0B971FEBC2DEC685 C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5456
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI9716.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240752546 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:4264
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:4372
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 74484DB1E78ACA017BEB42B425E6FD9B
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2220

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:1424

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

e59e863.rbs

Path C:\Config.Msi\e59e863.rbs
Size 10KB
SHA256 52e32896aaf45b6cfaa06b4f45c6a98080b127afefa5c136c97e7a20c6b7bc88
MD5 b5eb85af84e3fd05d4c16c02d69fe96b
SHA1 79e31d5ac444253b96af9215200c540ad56cc310
SHA512 91b08a891a95f8589e22b7c88b3ac6f36ddb3444d69bca27cae42b0ea9658b4d6103207bbe321b816c02049f907a69ab62c425f267eb2e48bf56412d60b42d27
SSDEEP 96:6urg3ZZ+94JAN0Ggj9fDEPC7l39UHTiCsThqpUHTiC6j9TTq+ipThqMHza5HEhed:6vH+94J3PyPCNWzhIXzhU+YiEMZ9pHU
TLSH
T10B22FE01338095F2E2076F36C7531A913B33AEA45346324BA4CD46B84ADA79E5FBD1DA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI9716.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI9716.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

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Microsoft.Deployment.WindowsInstaller.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI9716.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\MSI9716.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\MSI9716.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\MSI9716.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\855dc423e2405ffa\ScreenConnect.ClientSetup.msi
Size 13.0MB
SHA256 9c9f6fb6e1c09c75535e6830082ab0ba11ae67a6e4ba42a30f3ea4515c61e498
MD5 1aa4816080dedb5afbd353e9f048b4f3
SHA1 efed0351f36efc772aaaebe283fd0d1687315ee7
SHA512 3baac263028a4cd2ea0c5a6e0a8c763481cab5581fb5b22c573018fe36439b296d66799b64df13282d5150f1d5ed33ae788eee40fdee9332bf8259bb4340f55e
SSDEEP 196608:YHxcp9ym3nltDUJVaHxcp9ym3DHxcp9ym33Hxcp9ym3eHxcp9ym39Hxcp9ym3nHk:mGplphGptGphGpsGpvGpRGp
TLSH
T153D623116BF89668F0F22A35E876A0B1E5377D125E22D12E2324791E2C75EC0C9B3777
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSIEF1A.tmp

Path C:\Windows\Installer\MSIEF1A.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 23723abd9e1ba5eb784e378b6a61e71882007266ebc600154ce6310b67300a78
MD5 aae7b472140a32e4be1dcf7be81b5da7
SHA1 46e30af0ff753f0ea2eb0655e218c26f46404410
SHA512 f0773d567b1f7a21bf0bb5584ca663129e13678cb38b0f841da8a2a871b6ba0047d4023a0cf365a71bd7df2a71efd2cda4601f6ee00f6532404e39362decc232
SSDEEP 24576:aFo3DMPKdoO/vvTL/Sgn3iFwfru9MrwkEqhl9qJfBiJ6JQ2XMYR23uNmz+r:ZHk
TLSH
T14557022472F92211E7F39E3CA8F06A23493E7D9B9C15DE8D45411B4E0862F71E872F66
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{1bd0efe7-38a5-4ad9-802b-ff8e69de03b4}_OnDiskSnapshotProp

Path \??\Volume{e3f46304-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{1bd0efe7-38a5-4ad9-802b-ff8e69de03b4}_OnDiskSnapshotProp
Size 6KB
SHA256 fdfb1c1ec1e986becce95118430840533801efbba44606e5eb0ccf57d51c4bc3
MD5 93d4f8cc557aa57b7726b854448bc66b
SHA1 976e9bb7ddeb4b9324e0a2bf5132439d9bb4309d
SHA512 6767f1332077de5632c4ad18902c538a7a3becd5d24e65353b2950c6d2765ff9c79fea1e302f692dc3a5e6aae7d9505acf6819a3fbd9dd1f6be314fa988b785e
SSDEEP 96:FCPLujzvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpu:EPib++uVm
TLSH
T1F2D188084AF54311E2B3AB3128F18557A877B811EF33CB8E0198238E6671A10F935F6F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4264-32-0x0000000003180000-0x00000000031AE000-memory.dmp

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memory/4264-44-0x00000000055C0000-0x000000000576C000-memory.dmp

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memory/4264-40-0x00000000032D0000-0x000000000335C000-memory.dmp

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memory/4264-36-0x00000000031B0000-0x00000000031BA000-memory.dmp

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memory/4936-12-0x0000000074C90000-0x000000007544C000-memory.dmp

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memory/4936-7-0x0000000005380000-0x000000000552C000-memory.dmp

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memory/4936-6-0x0000000002D70000-0x0000000002D92000-memory.dmp

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memory/4936-0-0x0000000074CA2000-0x0000000074CA3000-memory.dmp

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memory/4936-4-0x00000000052F0000-0x000000000537C000-memory.dmp

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memory/4936-2-0x0000000074C90000-0x000000007544C000-memory.dmp

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memory/4936-5-0x0000000074C90000-0x000000007544C000-memory.dmp

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memory/4936-3-0x00000000055F0000-0x00000000058E2000-memory.dmp

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memory/4936-10-0x0000000074C90000-0x000000007544C000-memory.dmp

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memory/4936-1-0x0000000002B70000-0x0000000002B78000-memory.dmp

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memory/4936-9-0x0000000005EA0000-0x000000000645A000-memory.dmp

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memory/4936-8-0x0000000074C90000-0x000000007544C000-memory.dmp

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