fd54e12a3dde03c477c48d8f8d4d070bc691cf386154f0df5b42e3c561450538

Analysis

max time kernel
148s
max time network
130s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
01/10/2026, 18:26

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.5MB
Sample261001-w3jv3syshy
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/3780-2-0x0000000005A40000-0x0000000005D32000-memory.dmp	revoked_cert_connectwise

Loads dropped DLL 11 IoCs

pid	Process
2764	MsiExec.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
244	rundll32.exe
2852	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)	\??\Q:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
	\??\F:\	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	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)	\??\R:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe

Drops file in Program Files directory 17 IoCs

description	ioc	Process
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.Client.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.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\ScreenConnect.WindowsBackstageShell.exe.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.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.WindowsClient.exe.config	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)\app.config	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)\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.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (855dc423e2405ffa)\system.config	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\e59b721.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 created	C:\Windows\SystemTemp\~DF30294F45C4C745CA.TMP	msiexec.exe
File created	C:\Windows\Installer\SourceHash{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}	msiexec.exe
File created	C:\Windows\SystemTemp\~DFA7D42F3966F2C4BC.TMP	msiexec.exe
File created	C:\Windows\Installer\e59b723.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\DefaultIcon	msiexec.exe
File opened for modification	C:\Windows\Installer\e59b721.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBCDE.tmp	msiexec.exe
File created	C:\Windows\Installer\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DF03D4AB419034D60E.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DF1FF9A31E0D55121B.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBD0E.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 = 000000000400000032ed1b0a2a5ec3f10000000000000000000000000000000000000000000000000000000000000000000000000000000000001071020000000000c012000000000000000000000000270101000088380132ed1b0a0000000000001071020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d0830200000000006025c501000000000000000000000700010000e8410132ed1b0a000000000000d08302000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9c701000000000000050000000000000000000000070001000098d4e332ed1b0a00000000000030a9c7010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9cc0100000000000005000000000000000000000007000100009854e632ed1b0a00000000000030a9cc01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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 (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Clients = 3a0000000000	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-855dc423e2405ffa\shell\open\command	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell\open\command	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 (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\ProductIcon = "C:\\Windows\\Installer\\{95BE8D4C-B9CF-53FA-5FC2-96717DE9E62E}\\DefaultIcon"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\55B90CCB32C8B5A658D54C322E04F5AF	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-855dc423e2405ffa	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\shell\open	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\Language = "1033"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Media\1 = ";"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\InstanceType = "0"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\AuthorizedLUAApp = "0"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\DeploymentFlags = "3"	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 (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-855dc423e2405ffa\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\ProductName = "ScreenConnect Client (855dc423e2405ffa)"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\PackageCode = "C4D8EB59FC9BAF35F52C6917D79E6EE2"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	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
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Assignment = "1"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\AdvertiseFlags = "388"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\SourceList\Net	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\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\855dc423e2405ffa\\"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\C4D8EB59FC9BAF35F52C6917D79E6EE2\Version = "419561476"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\55B90CCB32C8B5A658D54C322E04F5AF\C4D8EB59FC9BAF35F52C6917D79E6EE2	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
6080	msiexec.exe
6080	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3780	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	1588	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1588	msiexec.exe
Token: SeSecurityPrivilege	6080	msiexec.exe
Token: SeCreateTokenPrivilege	1588	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1588	msiexec.exe
Token: SeLockMemoryPrivilege	1588	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1588	msiexec.exe
Token: SeMachineAccountPrivilege	1588	msiexec.exe
Token: SeTcbPrivilege	1588	msiexec.exe
Token: SeSecurityPrivilege	1588	msiexec.exe
Token: SeTakeOwnershipPrivilege	1588	msiexec.exe
Token: SeLoadDriverPrivilege	1588	msiexec.exe
Token: SeSystemProfilePrivilege	1588	msiexec.exe
Token: SeSystemtimePrivilege	1588	msiexec.exe
Token: SeProfSingleProcessPrivilege	1588	msiexec.exe
Token: SeIncBasePriorityPrivilege	1588	msiexec.exe
Token: SeCreatePagefilePrivilege	1588	msiexec.exe
Token: SeCreatePermanentPrivilege	1588	msiexec.exe
Token: SeBackupPrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeShutdownPrivilege	1588	msiexec.exe
Token: SeDebugPrivilege	1588	msiexec.exe
Token: SeAuditPrivilege	1588	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1588	msiexec.exe
Token: SeChangeNotifyPrivilege	1588	msiexec.exe
Token: SeRemoteShutdownPrivilege	1588	msiexec.exe
Token: SeUndockPrivilege	1588	msiexec.exe
Token: SeSyncAgentPrivilege	1588	msiexec.exe
Token: SeEnableDelegationPrivilege	1588	msiexec.exe
Token: SeManageVolumePrivilege	1588	msiexec.exe
Token: SeImpersonatePrivilege	1588	msiexec.exe
Token: SeCreateGlobalPrivilege	1588	msiexec.exe
Token: SeCreateTokenPrivilege	1588	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1588	msiexec.exe
Token: SeLockMemoryPrivilege	1588	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1588	msiexec.exe
Token: SeMachineAccountPrivilege	1588	msiexec.exe
Token: SeTcbPrivilege	1588	msiexec.exe
Token: SeSecurityPrivilege	1588	msiexec.exe
Token: SeTakeOwnershipPrivilege	1588	msiexec.exe
Token: SeLoadDriverPrivilege	1588	msiexec.exe
Token: SeSystemProfilePrivilege	1588	msiexec.exe
Token: SeSystemtimePrivilege	1588	msiexec.exe
Token: SeProfSingleProcessPrivilege	1588	msiexec.exe
Token: SeIncBasePriorityPrivilege	1588	msiexec.exe
Token: SeCreatePagefilePrivilege	1588	msiexec.exe
Token: SeCreatePermanentPrivilege	1588	msiexec.exe
Token: SeBackupPrivilege	1588	msiexec.exe
Token: SeRestorePrivilege	1588	msiexec.exe
Token: SeShutdownPrivilege	1588	msiexec.exe
Token: SeDebugPrivilege	1588	msiexec.exe
Token: SeAuditPrivilege	1588	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1588	msiexec.exe
Token: SeChangeNotifyPrivilege	1588	msiexec.exe
Token: SeRemoteShutdownPrivilege	1588	msiexec.exe
Token: SeUndockPrivilege	1588	msiexec.exe
Token: SeSyncAgentPrivilege	1588	msiexec.exe
Token: SeEnableDelegationPrivilege	1588	msiexec.exe
Token: SeManageVolumePrivilege	1588	msiexec.exe
Token: SeImpersonatePrivilege	1588	msiexec.exe
Token: SeCreateGlobalPrivilege	1588	msiexec.exe
Token: SeCreateTokenPrivilege	1588	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1588	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1588	msiexec.exe
1588	msiexec.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1588	msiexec.exe
6080	msiexec.exe
2764	MsiExec.exe
2852	MsiExec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 1588	3780	ScreenConnect.ClientSetup.exe	89
PID 6080 wrote to memory of 2764	6080	msiexec.exe	91
PID 2764 wrote to memory of 244	2764	MsiExec.exe	92
PID 6080 wrote to memory of 2988	6080	msiexec.exe	97
PID 6080 wrote to memory of 2852	6080	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:3780
- 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:1588

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:6080
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 19CB81ECBDBFEAD5DA67AC142305F5DF C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI5922.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240736671 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:244
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:2988
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding D319DC052985E8630AEAA05D3FA943FC
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2852

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:5924

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

e59b722.rbs

Path C:\Config.Msi\e59b722.rbs
Size 10KB
SHA256 56b4b72ddea968ddda40801e02479acdad70b04bc3b48197428ec27bdcce4ba2
MD5 c6ff781e342cb9c7661f164575182b4d
SHA1 418fe0b10b26397f16494896ad2997d2b275d70d
SHA512 c1f4ec85fb76ca876057db22179b6df4b397abf787d1a90af85b20ef2cae48f2673e4c7334e262abb3c5ebb987b1e62af39c12507e9063d46744d332687fb2b6
SSDEEP 96:curg3ZZ+94JAN0Ggj9fDEPCLi39UoTiCsThqpUoTiC6j9TTq+ipThqMHza5HEhed:cvH+94J3PyPCgWwhIXwhU+YiEMZ9pHU
TLSH
T1A322FE01338095F2E2076F36C7531A913B33AEA45346324BA4CD46B88EDA79E5F7D1DA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI5922.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI5922.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\MSI5922.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\MSI5922.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\MSI5922.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\MSI5922.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

MSIBD0E.tmp

Path C:\Windows\Installer\MSIBD0E.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 fec10c2e609702c70f21338f0f486d03f23edbc6b76336d0cfcd4f4ca277af5b
MD5 cec39b15f80fa0abc6c9383562a5f0db
SHA1 6d77f144b33b6f2a43058672ff164b66f39af8cc
SHA512 c60db2b9b9a979e0f9b1605306746d70f1b27163b54af0a79f7954ddde71043b19df8bd772a8c0b8cfd8846e9842e75ed4997140c6a6260a0d2eb7add05ae5d8
SSDEEP 24576:+Fo3DMPTdoO/vvTL/CgQQyFAv7Oqbr3DUt2id9O4mFea5HRQc4BmwJKR0uK:4Ho
TLSH
T1FE57B51836F92100E7F79F3CA8F46A63493A7D579C1ADE8D45411B4E0821FB1E872F6A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{f9bf63d7-cf91-4e3e-9f6f-ed446dee9377}_OnDiskSnapshotProp

Path \??\Volume{0a1bed32-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{f9bf63d7-cf91-4e3e-9f6f-ed446dee9377}_OnDiskSnapshotProp
Size 6KB
SHA256 1381726e6516fb3149132ae9d03ea25878e8420f7083f569d96db4faf2c48a97
MD5 b7dc200b1332818fad0438f11ab89291
SHA1 9ad93427ce326fbbfe79f8665813db0d641067b7
SHA512 6764a8e8015c7694cb898e375b5e2236a718cd0902569fcaab772e504843f488c59599424de2658ced8188f3a12059018e5fd33ab969fccbcdb38a9274580d8e
SSDEEP 96:FGo9LuqkRsvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpu:v9qRgb++uVm
TLSH
T159D1760C5AE54311E2B3AB7129F18557A877B811EF33CB8E0198238E6671A10F875F6F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/244-40-0x0000000005C60000-0x0000000005CEC000-memory.dmp

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memory/244-32-0x0000000005B80000-0x0000000005BAE000-memory.dmp

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memory/244-44-0x0000000005EA0000-0x000000000604C000-memory.dmp

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memory/244-36-0x0000000005BC0000-0x0000000005BCA000-memory.dmp

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memory/3780-7-0x00000000057D0000-0x000000000597C000-memory.dmp

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memory/3780-8-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/3780-9-0x00000000062F0000-0x00000000068AA000-memory.dmp

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memory/3780-12-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/3780-0-0x0000000074482000-0x0000000074483000-memory.dmp

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memory/3780-10-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/3780-6-0x0000000003170000-0x0000000003192000-memory.dmp

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memory/3780-5-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/3780-4-0x0000000005740000-0x00000000057CC000-memory.dmp

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memory/3780-2-0x0000000005A40000-0x0000000005D32000-memory.dmp

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memory/3780-3-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/3780-1-0x0000000001880000-0x0000000001888000-memory.dmp

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