65c78afd637ee5211bbc712685cd346173e40c5f86061d276b6c71d7233f7879

Analysis

max time kernel
148s
max time network
135s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
27/07/2026, 12:23

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.4MB
Sample260727-pkth8sem4w
SHA256 65c78afd637ee5211bbc712685cd346173e40c5f86061d276b6c71d7233f7879
MD5 4b3946bdd11ad71151fedffd845019f3
SHA1 98b1b256ed200ba7f5322b6e1f100e941e3473fb
SHA512 b44b35a07db180441a1e062beec9059f37c1446ab97d0866e9dd969d240bf3f6870733c10c1b0378ffa5cc28fa6d1a530d5affee8c3636aba671be970569ccff
SSDEEP 98304:/zIus6efPUIdoaxcp8wy5c3trGOlkQ5DUOgJ9zl:/hfefPtHxcp9ym3nltDUJV
TLSH
T12E46E101B3D695B6D1BF1638D87A52696734BC049316CBBF5394BD392E32BC04E323A6
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/3724-2-0x00000000058C0000-0x0000000005BB2000-memory.dmp	revoked_cert_connectwise

Loads dropped DLL 11 IoCs

pid	Process
2200	MsiExec.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
2208	rundll32.exe
456	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)	\??\L:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\J:	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)	\??\Y:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\N:	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)	\??\M:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	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)	\??\H:	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 (4483994a9c7ab435)\ScreenConnect.Client.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.Core.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsClient.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsFileManager.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\Client.Override.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\Client.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\system.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsBackstageShell.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsFileManager.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\Client.Override.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.ClientService.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.ClientService.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\app.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.Windows.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\ScreenConnect.WindowsClient.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (4483994a9c7ab435)\Client.en-US.resources	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\e597bed.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\{9A316ABD-47DE-B7E7-BE02-5B04ABA271AB}\DefaultIcon	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File created	C:\Windows\SystemTemp\~DF720216ECA522346E.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI8350.tmp	msiexec.exe
File created	C:\Windows\Installer\e597bed.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI8301.tmp	msiexec.exe
File created	C:\Windows\Installer\{9A316ABD-47DE-B7E7-BE02-5B04ABA271AB}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DFE027D76F65EB1C0B.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DF2B9051169DCB5A1B.TMP	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\SystemTemp\~DFE62A1F95289CE756.TMP	msiexec.exe
File created	C:\Windows\Installer\SourceHash{9A316ABD-47DE-B7E7-BE02-5B04ABA271AB}	msiexec.exe
File created	C:\Windows\Installer\e597bef.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	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 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 = 000000000400000067831fc6f5c7bf350000000000000000000000000000000000000000000000000000000000000000000000000000000000001071020000000000c012000000000000000000000000270101000088380167831fc60000000000001071020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d0830200000000006025c501000000000000000000000700010000e8410167831fc6000000000000d08302000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9c701000000000000050000000000000000000000070001000098d4e367831fc600000000000030a9c7010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9cc0100000000000005000000000000000000000007000100009854e667831fc600000000000030a9cc01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\URL Protocol	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\Net	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\Media	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\Media\1 = ";"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\AdvertiseFlags = "388"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\4483994a9c7ab435\\"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\4483994a9c7ab435\\"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-4483994a9c7ab435\shell\open\command	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\PackageCode = "DBA613A9ED747E7BEB20B540BA2A17BA"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\Assignment = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-4483994a9c7ab435	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\shell\open	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\InstanceType = "0"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\DeploymentFlags = "3"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\shell	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\DBA613A9ED747E7BEB20B540BA2A17BA	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\ProductName = "ScreenConnect Client (4483994a9c7ab435)"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\ProductIcon = "C:\\Windows\\Installer\\{9A316ABD-47DE-B7E7-BE02-5B04ABA271AB}\\DefaultIcon"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\shell\open\command	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\Language = "1033"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\AuthorizedLUAApp = "0"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\85A08842AFE3A836443899A4C9A74B53	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\85A08842AFE3A836443899A4C9A74B53\DBA613A9ED747E7BEB20B540BA2A17BA	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-4483994a9c7ab435\shell\open\command\ = "\"C:\\Program Files (x86)\\ScreenConnect Client (4483994a9c7ab435)\\ScreenConnect.WindowsClient.exe\" \"%1\""	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\DBA613A9ED747E7BEB20B540BA2A17BA\Full	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	msiexec.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\Clients = 3a0000000000	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\DBA613A9ED747E7BEB20B540BA2A17BA\Version = "419561476"	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2572	msiexec.exe
2572	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3724	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	1900	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1900	msiexec.exe
Token: SeSecurityPrivilege	2572	msiexec.exe
Token: SeCreateTokenPrivilege	1900	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1900	msiexec.exe
Token: SeLockMemoryPrivilege	1900	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1900	msiexec.exe
Token: SeMachineAccountPrivilege	1900	msiexec.exe
Token: SeTcbPrivilege	1900	msiexec.exe
Token: SeSecurityPrivilege	1900	msiexec.exe
Token: SeTakeOwnershipPrivilege	1900	msiexec.exe
Token: SeLoadDriverPrivilege	1900	msiexec.exe
Token: SeSystemProfilePrivilege	1900	msiexec.exe
Token: SeSystemtimePrivilege	1900	msiexec.exe
Token: SeProfSingleProcessPrivilege	1900	msiexec.exe
Token: SeIncBasePriorityPrivilege	1900	msiexec.exe
Token: SeCreatePagefilePrivilege	1900	msiexec.exe
Token: SeCreatePermanentPrivilege	1900	msiexec.exe
Token: SeBackupPrivilege	1900	msiexec.exe
Token: SeRestorePrivilege	1900	msiexec.exe
Token: SeShutdownPrivilege	1900	msiexec.exe
Token: SeDebugPrivilege	1900	msiexec.exe
Token: SeAuditPrivilege	1900	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1900	msiexec.exe
Token: SeChangeNotifyPrivilege	1900	msiexec.exe
Token: SeRemoteShutdownPrivilege	1900	msiexec.exe
Token: SeUndockPrivilege	1900	msiexec.exe
Token: SeSyncAgentPrivilege	1900	msiexec.exe
Token: SeEnableDelegationPrivilege	1900	msiexec.exe
Token: SeManageVolumePrivilege	1900	msiexec.exe
Token: SeImpersonatePrivilege	1900	msiexec.exe
Token: SeCreateGlobalPrivilege	1900	msiexec.exe
Token: SeCreateTokenPrivilege	1900	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1900	msiexec.exe
Token: SeLockMemoryPrivilege	1900	msiexec.exe
Token: SeIncreaseQuotaPrivilege	1900	msiexec.exe
Token: SeMachineAccountPrivilege	1900	msiexec.exe
Token: SeTcbPrivilege	1900	msiexec.exe
Token: SeSecurityPrivilege	1900	msiexec.exe
Token: SeTakeOwnershipPrivilege	1900	msiexec.exe
Token: SeLoadDriverPrivilege	1900	msiexec.exe
Token: SeSystemProfilePrivilege	1900	msiexec.exe
Token: SeSystemtimePrivilege	1900	msiexec.exe
Token: SeProfSingleProcessPrivilege	1900	msiexec.exe
Token: SeIncBasePriorityPrivilege	1900	msiexec.exe
Token: SeCreatePagefilePrivilege	1900	msiexec.exe
Token: SeCreatePermanentPrivilege	1900	msiexec.exe
Token: SeBackupPrivilege	1900	msiexec.exe
Token: SeRestorePrivilege	1900	msiexec.exe
Token: SeShutdownPrivilege	1900	msiexec.exe
Token: SeDebugPrivilege	1900	msiexec.exe
Token: SeAuditPrivilege	1900	msiexec.exe
Token: SeSystemEnvironmentPrivilege	1900	msiexec.exe
Token: SeChangeNotifyPrivilege	1900	msiexec.exe
Token: SeRemoteShutdownPrivilege	1900	msiexec.exe
Token: SeUndockPrivilege	1900	msiexec.exe
Token: SeSyncAgentPrivilege	1900	msiexec.exe
Token: SeEnableDelegationPrivilege	1900	msiexec.exe
Token: SeManageVolumePrivilege	1900	msiexec.exe
Token: SeImpersonatePrivilege	1900	msiexec.exe
Token: SeCreateGlobalPrivilege	1900	msiexec.exe
Token: SeCreateTokenPrivilege	1900	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	1900	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1900	msiexec.exe
1900	msiexec.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1900	msiexec.exe
2572	msiexec.exe
2200	MsiExec.exe
456	MsiExec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 1900	3724	ScreenConnect.ClientSetup.exe	90
PID 2572 wrote to memory of 2200	2572	msiexec.exe	92
PID 2200 wrote to memory of 2208	2200	MsiExec.exe	93
PID 2572 wrote to memory of 3592	2572	msiexec.exe	99
PID 2572 wrote to memory of 456	2572	msiexec.exe	101

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:3724
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\4483994a9c7ab435\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:1900

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:2572
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 8368584AEB602EA075981F858EB58DDE C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI167C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240719671 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2208
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:3592
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 5EFDF7B1E57B15F8BF842F572DF7ECAB
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:456

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:5544

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

e597bee.rbs

Path C:\Config.Msi\e597bee.rbs
Size 10KB
SHA256 2fa3bbea0a0fb44254e408c882e773cbf2e4787605c13108d5498936079bf2da
MD5 544ca255cd231db692ed635762621c46
SHA1 935dca464f4612a126b57913ba469c9166ae38f8
SHA512 106ec6d9f20b2715555ad550ba25c568b6806a1e62672de70deb3d5796e151139c704dcc08393b55cde4476d74ec19360180e4e855af0492e9c98e07774ee173
SSDEEP 96:RM3i8Ni5nAcoQsS84X8sCEhMZeGZvj/ihVfpgkeMJC3jujl9UEgpiCsThqxUEgpr:RCi5nriDqC6W7hIz7hnJ3HC2Zpua
TLSH
T10C225F513308B1E1E9A72F32C74B46207BB2EA955310130F60DCA1399E9379A6FBD7C6
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI167C.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI167C.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\MSI167C.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\MSI167C.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\MSI167C.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\MSI167C.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\4483994a9c7ab435\ScreenConnect.ClientSetup.msi
Size 12.8MB
SHA256 abc9a23c87966027221b0c7a5c189b534157c40037dd7884f959d336efae85a2
MD5 e93110897a75a575975486e575fbfc4c
SHA1 d88993a0d147a4ea4cb53f089ff24e532410fe96
SHA512 e189ce425e307e77beca5287b162a76f87bab9b7ac64732f9dd4a877038bb56d604fc9f3db7f98cadb0c4729e2fe51a00581a2f8b486a0588703f4b238db855b
SSDEEP 196608:bHxcp9ym3nltDUJV6Hxcp9ym37Hxcp9ym3kHxcp9ym3MHxcp9ym3YHxcp9ym3hHs:lGplpdGpFGpCGpqGpmGpTGpH
TLSH
T179D623116BF89678F0F22A35E876A0B1A5377C125E22D12E2324791E2C75EC0C9B3777
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI8350.tmp

Path C:\Windows\Installer\MSI8350.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 c7b2e4dc0d869dfcf3fa1b1eb398f35d41dfbff583de73c1bba8d51515705680
MD5 6ed719d2adf8b8dc8ebcebe556550db4
SHA1 f74a9844fe6c7732e16797148a1ccfae851151f2
SHA512 473d5ee744bdf8f8b377c252ca749181ce5702a7bbdc6b2e1fb2d946d0de65233a62cf3b621e653e2435584d15a4ab4a14e6dc7c3169c34280893d85c03ba1c9
SSDEEP 24576:wFo3DMPydoO/vvTL/SwyiCFAvre45LFB0vkwN/8qUn8aZ1jS8Ih2ibYDGuo:fHE
TLSH
T15457B42436F92100EBF7AE3CA8F06A274D397D57AC16DE8D45511B4D0822F71E872F6A
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

{348c5177-6c54-4f43-bd7b-31085dbf75c3}_OnDiskSnapshotProp

Path \??\Volume{c61f8367-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{348c5177-6c54-4f43-bd7b-31085dbf75c3}_OnDiskSnapshotProp
Size 6KB
SHA256 df52635f9d94ea2ffbaea536508b386a03102de76a37b9640c29c81897a95932
MD5 3b9e08dbe878f4ff8231cc51bb186d91
SHA1 0eee040d8eec4a88caefbb49d44e4661d893f96a
SHA512 ba8dda5bd8244532151bb82c456afd565fb7cc6c5767fed1ad6aa34526edae13434baac0bf6c3aa6582d96cfdd1fdd3e631b8ab995c83104427c6238c2973edd
SSDEEP 96:F6dlcvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpu:AQb++uVm
TLSH
T13CD177185AF54711E2B3AB7129F14557A877B912FF33CB8E0198238E2621910F875F6B
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2208-32-0x0000000003210000-0x000000000323E000-memory.dmp

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memory/2208-36-0x0000000003250000-0x000000000325A000-memory.dmp

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memory/2208-44-0x00000000056E0000-0x000000000588C000-memory.dmp

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memory/2208-40-0x0000000003380000-0x000000000340C000-memory.dmp

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memory/2572-90-0x0000024B38EF0000-0x0000024B39237000-memory.dmp

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memory/2572-49-0x0000024B38EF0000-0x0000024B39237000-memory.dmp

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memory/3724-6-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/3724-5-0x0000000003030000-0x0000000003052000-memory.dmp

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memory/3724-8-0x0000000006170000-0x000000000672A000-memory.dmp

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memory/3724-10-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/3724-0-0x0000000074BD2000-0x0000000074BD3000-memory.dmp

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memory/3724-7-0x0000000005650000-0x00000000057FC000-memory.dmp

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memory/3724-9-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/3724-3-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/3724-4-0x00000000055C0000-0x000000000564C000-memory.dmp

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memory/3724-13-0x0000000074BC0000-0x000000007537C000-memory.dmp

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memory/3724-2-0x00000000058C0000-0x0000000005BB2000-memory.dmp

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memory/3724-1-0x00000000016B0000-0x00000000016B8000-memory.dmp

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