585cc4a773e43663a0faba951f836bb71443105225f2a3c6e95367a2c40d8526

Analysis

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

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
08/06/2026, 12:44

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General

Target
ScreenConnect.ClientSetup.exe
Size 5.4MB
Sample260608-pypr7ses8x
SHA256 585cc4a773e43663a0faba951f836bb71443105225f2a3c6e95367a2c40d8526
MD5 e44cb419508a7cf6f6e609bc5b632f83
SHA1 662bca26ac50cdd32cb3f90c7e46abc583399904
SHA512 cda3c126f207a43b97ee230c9954bca973bd523472b67e39756653e62cbd2f5beb4052d3c30d63ef52f1946d6a8c824cc5252f36cfcb2e97d66e93cdca90d6bf
SSDEEP 98304:8z3us6efPcIdoaxcp8wy5c3trGflkQ5DUOgJ9zl88:8CfefPlHxcp9ym3WltDUJVe8
TLSH
T1AA46E101B3D695B6D1BF1638D87A52656734BC049712CBBF5394BD392E32BC08E323A6
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/2664-4-0x00000000057D0000-0x0000000005AC2000-memory.dmp	revoked_cert_connectwise

Badlisted process makes network request 3 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
3	5704	msiexec.exe
4	5704	msiexec.exe
5	4548	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)	\??\N:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsBackstageShell.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsFileManager.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\app.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\Client.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.Client.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsClient.exe.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\Client.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\system.config	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsClient.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.ClientService.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\Client.Override.en-US.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\Client.Override.resources	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.ClientService.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.Core.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.Windows.dll	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsBackstageShell.exe	msiexec.exe
File created	C:\Program Files (x86)\ScreenConnect Client (83dc569f9508ab90)\ScreenConnect.WindowsFileManager.exe.config	msiexec.exe

Drops file in Windows directory 15 IoCs

description	ioc	Process
File created	C:\Windows\Installer\e5872d9.msi	msiexec.exe
File created	C:\Windows\SystemTemp\~DFB56BDFD6AD5127F3.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DFD50E6BB05AF2BB64.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\{FB6C0F0E-4824-7328-BB17-2865C4C4C3EA}\DefaultIcon	msiexec.exe
File created	C:\Windows\SystemTemp\~DF24333EE7B4E4E82B.TMP	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI750D.tmp	msiexec.exe
File created	C:\Windows\Installer\e5872db.msi	msiexec.exe
File created	C:\Windows\Installer\{FB6C0F0E-4824-7328-BB17-2865C4C4C3EA}\DefaultIcon	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\SystemTemp\~DFAC1E9ED74B8C4105.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\e5872d9.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\SourceHash{FB6C0F0E-4824-7328-BB17-2865C4C4C3EA}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI74BE.tmp	msiexec.exe

Loads dropped DLL 11 IoCs

pid	Process
2388	MsiExec.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
1964	rundll32.exe
2740	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
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	vssvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr	vssvc.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 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	vssvc.exe

Modifies data under HKEY_USERS 3 IoCs

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

Modifies registry class 32 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\FF220460E1BFE3DE38CD65F95980BA09\E0F0C6BF42848237BB7182564C4C3CAE	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\PackageCode = "E0F0C6BF42848237BB7182564C4C3CAE"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\ProductIcon = "C:\\Windows\\Installer\\{FB6C0F0E-4824-7328-BB17-2865C4C4C3EA}\\DefaultIcon"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\E0F0C6BF42848237BB7182564C4C3CAE	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\Assignment = "1"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\DeploymentFlags = "3"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\FF220460E1BFE3DE38CD65F95980BA09	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\shell\open	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\Language = "1033"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\Net	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\83dc569f9508ab90\\"	msiexec.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\Clients = 3a0000000000	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\ScreenConnect\\25.2.4.9229\\83dc569f9508ab90\\"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\UseOriginalUrlEncoding = "1"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\Media	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\shell	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\Version = "419561476"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\InstanceType = "0"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\E0F0C6BF42848237BB7182564C4C3CAE\Full	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\AdvertiseFlags = "388"	msiexec.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\AuthorizedLUAApp = "0"	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-83dc569f9508ab90	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\shell\open\command	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\shell\open\command\ = "\"C:\\Program Files (x86)\\ScreenConnect Client (83dc569f9508ab90)\\ScreenConnect.WindowsClient.exe\" \"%1\""	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\ProductName = "ScreenConnect Client (83dc569f9508ab90)"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\PackageName = "ScreenConnect.ClientSetup.msi"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\E0F0C6BF42848237BB7182564C4C3CAE\SourceList\Media\1 = ";"	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\sc-83dc569f9508ab90\URL Protocol	msiexec.exe
Key created	\REGISTRY\MACHINE\Software\Classes\sc-83dc569f9508ab90\shell\open\command	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4548	msiexec.exe
4548	msiexec.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2664	ScreenConnect.ClientSetup.exe
Token: SeShutdownPrivilege	5704	msiexec.exe
Token: SeIncreaseQuotaPrivilege	5704	msiexec.exe
Token: SeSecurityPrivilege	4548	msiexec.exe
Token: SeCreateTokenPrivilege	5704	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	5704	msiexec.exe
Token: SeLockMemoryPrivilege	5704	msiexec.exe
Token: SeIncreaseQuotaPrivilege	5704	msiexec.exe
Token: SeMachineAccountPrivilege	5704	msiexec.exe
Token: SeTcbPrivilege	5704	msiexec.exe
Token: SeSecurityPrivilege	5704	msiexec.exe
Token: SeTakeOwnershipPrivilege	5704	msiexec.exe
Token: SeLoadDriverPrivilege	5704	msiexec.exe
Token: SeSystemProfilePrivilege	5704	msiexec.exe
Token: SeSystemtimePrivilege	5704	msiexec.exe
Token: SeProfSingleProcessPrivilege	5704	msiexec.exe
Token: SeIncBasePriorityPrivilege	5704	msiexec.exe
Token: SeCreatePagefilePrivilege	5704	msiexec.exe
Token: SeCreatePermanentPrivilege	5704	msiexec.exe
Token: SeBackupPrivilege	5704	msiexec.exe
Token: SeRestorePrivilege	5704	msiexec.exe
Token: SeShutdownPrivilege	5704	msiexec.exe
Token: SeDebugPrivilege	5704	msiexec.exe
Token: SeAuditPrivilege	5704	msiexec.exe
Token: SeSystemEnvironmentPrivilege	5704	msiexec.exe
Token: SeChangeNotifyPrivilege	5704	msiexec.exe
Token: SeRemoteShutdownPrivilege	5704	msiexec.exe
Token: SeUndockPrivilege	5704	msiexec.exe
Token: SeSyncAgentPrivilege	5704	msiexec.exe
Token: SeEnableDelegationPrivilege	5704	msiexec.exe
Token: SeManageVolumePrivilege	5704	msiexec.exe
Token: SeImpersonatePrivilege	5704	msiexec.exe
Token: SeCreateGlobalPrivilege	5704	msiexec.exe
Token: SeCreateTokenPrivilege	5704	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	5704	msiexec.exe
Token: SeLockMemoryPrivilege	5704	msiexec.exe
Token: SeIncreaseQuotaPrivilege	5704	msiexec.exe
Token: SeMachineAccountPrivilege	5704	msiexec.exe
Token: SeTcbPrivilege	5704	msiexec.exe
Token: SeSecurityPrivilege	5704	msiexec.exe
Token: SeTakeOwnershipPrivilege	5704	msiexec.exe
Token: SeLoadDriverPrivilege	5704	msiexec.exe
Token: SeSystemProfilePrivilege	5704	msiexec.exe
Token: SeSystemtimePrivilege	5704	msiexec.exe
Token: SeProfSingleProcessPrivilege	5704	msiexec.exe
Token: SeIncBasePriorityPrivilege	5704	msiexec.exe
Token: SeCreatePagefilePrivilege	5704	msiexec.exe
Token: SeCreatePermanentPrivilege	5704	msiexec.exe
Token: SeBackupPrivilege	5704	msiexec.exe
Token: SeRestorePrivilege	5704	msiexec.exe
Token: SeShutdownPrivilege	5704	msiexec.exe
Token: SeDebugPrivilege	5704	msiexec.exe
Token: SeAuditPrivilege	5704	msiexec.exe
Token: SeSystemEnvironmentPrivilege	5704	msiexec.exe
Token: SeChangeNotifyPrivilege	5704	msiexec.exe
Token: SeRemoteShutdownPrivilege	5704	msiexec.exe
Token: SeUndockPrivilege	5704	msiexec.exe
Token: SeSyncAgentPrivilege	5704	msiexec.exe
Token: SeEnableDelegationPrivilege	5704	msiexec.exe
Token: SeManageVolumePrivilege	5704	msiexec.exe
Token: SeImpersonatePrivilege	5704	msiexec.exe
Token: SeCreateGlobalPrivilege	5704	msiexec.exe
Token: SeCreateTokenPrivilege	5704	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	5704	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5704	msiexec.exe
5704	msiexec.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2664 wrote to memory of 5704	2664	ScreenConnect.ClientSetup.exe	80
PID 4548 wrote to memory of 2388	4548	msiexec.exe	82
PID 2388 wrote to memory of 1964	2388	MsiExec.exe	83
PID 4548 wrote to memory of 3120	4548	msiexec.exe	87
PID 4548 wrote to memory of 2740	4548	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:2664
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\83dc569f9508ab90\ScreenConnect.ClientSetup.msi"
  2⤵
  - Badlisted process makes network request
  - Enumerates connected drives
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:5704

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Badlisted process makes network request
- 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:4548
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding E4B9A9A0FA8FAEEB819A727431E4EF1F C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI436D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240665500 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1964
- C:\Windows\system32\srtasks.exe
  C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
  2⤵
  PID:3120
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding D5FBEB2987E7EEE753AED235713097EF
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2740

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Checks SCSI registry key(s)
PID:3076

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

e5872da.rbs

Path C:\Config.Msi\e5872da.rbs
Size 10KB
SHA256 9c824d87b306e57b9e91762b6b481b125ee1d8e110dcdfa03d35676bd05e8371
MD5 30f0b808d2f1c76dd1cde369bd4f9a9b
SHA1 a76dac83e9f7c4b32ba7bbb34c5ee0fcfa37a651
SHA512 f3047a59ae21fe79dbdb67fce7fec8988b7909ebec68b200571b5a3b6672ff66b4b2bd4a3259e350d792bf103476d91f7e6fc0cffe52f3c4c9ccbadc5ce17bb7
SSDEEP 96:GrZjZyyA/4tG/jUfgBsCN1fV6R9UAiiCsThqnUAiiC6jBqBgMzThqeHG3A5xufRM:Grx0yjYxsCN1tmWZhIxZhDtzE6zXpKs
TLSH
T13B2211517A0195E2F1722B32CB525E113B73EEAA5300320B61DC44396E937996FBC2EE
MD5 SHA1 SHA512 SSDEEP TLSH

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57C8EDB95DF3F0AD4EE2DC2B8CFD4157

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
Size 4KB
SHA256 0300e9ddb527990e8b59d06e9ccf3ec2bd92d3bbd0ef4fba69d6336e4195e82d
MD5 5f036f91e86e30f749961506951d51eb
SHA1 acb87b59117c6e2db86f98c4c8bac52eade97cd4
SHA512 341f250cf3764207b5328a12b31016c0750daddcd16722b4bcef502bcbef7ef379abb601649ee6c3fdf121f3d3cd6890c8a80e5dae3169fe56ef82af20631944
SSDEEP 96:Dbonzjs6o1BXl7EV4/sClywa3UHimRkISatmQFjm:Dbsns6KXxUrClywawinLatvFjm
TLSH
T100A19E44A75AEB61C331EBB6829B7B51033B6D20178468FAEFDAA1E1695B44C143C3C2
MD5 SHA1 SHA512 SSDEEP TLSH

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57C8EDB95DF3F0AD4EE2DC2B8CFD4157

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
Size 342B
SHA256 83855ab0ec0bbdcf2ef6b34f95786f9bd16fe38c753de8064afe0a1a1e68d79d
MD5 2adfd4df0dd6eac7e77c1b0dc7ffe052
SHA1 800d05eef2ebab4c0465cedd84d0e4845d712661
SHA512 b36c4fd7800bb9be2e100b5399eba62222a0f423e39c321d1fafe3e17bae3a1cfdb716571abfe477ade22fbaf6de65d0f2414a8b004bbeb4913ada0fa2a1d569
TLSH
T1D0E05E11BBE80204F5770A3CAC7365499977B76B6A51CADD0275008D1C21F61C932719
MD5 SHA1 SHA512 TLSH

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MSI436D.tmp

Path C:\Users\Admin\AppData\Local\Temp\MSI436D.tmp
Size 1.0MB
SHA256 df08b98808c85da1d1ac7338dab9e4f0beeceee270d95bce2e044feb6117dfa6
MD5 ccc08ee4b0c9a2c48612e9615eb7f96a
SHA1 0c567b5d22718b10935e83530e1d974fa79b203d
SHA512 28ef4d1427ca88d8062fe0e4e93c94fa89213ea9ef0daf95ce024f14575f8bf61bda466832eff987c420b58c56eda5a02fdce5c6d8697cffd2bd3a3372e0fcdd
SSDEEP 24576:QUUGG7DlIQMi4CJXxCHzCrvPfU8GWng+A2tuHt+pbW/aU0r1d:jG7DlItQ5xJrvPfU8VgJwW/zAd
TLSH
T18935234832E58439E2A73A320CB6A6B125BC74773670D45FA78B4A1D5FB0AD1DE31327
MD5 SHA1 SHA512 SSDEEP TLSH

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Microsoft.Deployment.WindowsInstaller.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI436D.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

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ScreenConnect.Core.dll

Path C:\Users\Admin\AppData\Local\Temp\MSI436D.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\MSI436D.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\MSI436D.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

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ScreenConnect.ClientSetup.msi

Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\83dc569f9508ab90\ScreenConnect.ClientSetup.msi
Size 13.0MB
SHA256 55ef41b9731eed2618c5c0eeace4c2c0026550cd80f5f6b352d3250319437f91
MD5 f581a9d4f4519a80e9b131a48b26b60c
SHA1 03b567d123c89c63a4353811ab619c31a470b744
SHA512 1f45f0fe73f44f80003b381b42415985854eab83e43eabe8b7359c194d1224dbdf59608026ab4806c1122bc0501e98b9c48f2f773611e0eacc9ebcdfb5c3a909
SSDEEP 196608:vHxcp9ym3fltDUJV1Hxcp9ym3VHxcp9ym3QHxcp9ym3THxcp9ym3r3Hxcp9ym3ri:5Gp9piGpHGp+Gp9GpNGpNGp
TLSH
T116D623156BF89678F0F22A35E87A60B1A5377D126D22D12E2324791E2C71EC4C9B3773
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

ScreenConnect.ClientSetup.msi

Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.2.4.9229\83dc569f9508ab90\ScreenConnect.ClientSetup.msi
Size 13.0MB
SHA256 1b57698859530cadfc850d5dab75aa4c61ee4fe27a77549f60989668033cd600
MD5 f513525fd6b2003ea9edff0efb5e48cb
SHA1 6f58c42087b91d3937ffb6009c2a714af01f77ac
SHA512 d2c18763ce4c6b0c5968856443469bbe5ae54888db823e3ddcb124f3fdb8f4cf7c502057062236e8723a23016a98e4daced878e1f01b61547dd6ceedcbcbcacf
SSDEEP 196608:pHxcp9ym3fltDUJV1Hxcp9ym3VHxcp9ym3QHxcp9ym3THxcp9ym3r3Hxcp9ym3ri:7Gp9piGpHGp+Gp9GpNGpNGp
TLSH
T1DDD623156BF89678F0F22A35E87A60B1A5377D126D22D12E2324791E2C71EC4C9B3773
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

MSI750D.tmp

Path C:\Windows\Installer\MSI750D.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 324dd1a4fa3ef2cd5474733cb8ac03eb14d4812834e10adb0536c7f38b17ea4a
MD5 d10cbee423e196a4fa314d2cf7bcedf4
SHA1 3a99318e5e5e6ae7a402b9da8db0ab33ba4a4636
SHA512 1c7aec0374221ddcbd1677ac447725f052d3489672d31ae89439e94e42086cfc63fc2028e398b6b9bf4bb65e2427d989f1248f74782081ad1d5bf6776b9c2c18
SSDEEP 24576:z2gmSp1kdoO/vvTLNmGORkHqvaZ9AYCcmWVdHJkmftKoEKiTINnhLLsRR:6
TLSH
T15847E42436F92210E7F79E3CA8F06A234D3A7D5B8C15DE8D45415B4E0921FB1E872F6A
MD5 SHA1 SHA512 SSDEEP TLSH

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{8b21fe08-eb10-49a2-9b05-a22d54ff6ab0}_OnDiskSnapshotProp

Path \??\Volume{13ce4998-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{8b21fe08-eb10-49a2-9b05-a22d54ff6ab0}_OnDiskSnapshotProp
Size 6KB
SHA256 fd793f30bcbe0482b2e91ddf597364928f50956ef530b224963d4158509250d1
MD5 dbf88a09b6c09d9724d99e5efb60d586
SHA1 a5b8f13a7bb31ade64c94f3f3cc16d6c4864ea81
SHA512 693b1e9480dca11d2011cd5d9dedaa9a238a067dce680d31e17c29299576b541ad397fc4fdb22c7589aaf96b0918fb93c88b90982211434f04232e3ac7b16154
SSDEEP 96:FaBi8avc8DD84LTHzbOHXOHBlBRQ88Sc9XE56tOSVQpu:0BEb++ZVm
TLSH
T19AD178085AF54311E2B3AB7129F14557A877B911EF33CB8E0298638E2671A10F835F6F
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1964-47-0x0000000004F70000-0x0000000004FFC000-memory.dmp

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memory/1964-39-0x0000000004E70000-0x0000000004E9E000-memory.dmp

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memory/1964-51-0x00000000051B0000-0x000000000535C000-memory.dmp

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memory/1964-43-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

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memory/2664-8-0x0000000006070000-0x0000000006616000-memory.dmp

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memory/2664-0-0x0000000003050000-0x0000000003060000-memory.dmp

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memory/2664-7-0x00000000055D0000-0x000000000577C000-memory.dmp

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memory/2664-9-0x0000000003050000-0x0000000003060000-memory.dmp

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memory/2664-6-0x0000000003030000-0x0000000003052000-memory.dmp

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memory/2664-5-0x0000000005540000-0x00000000055CC000-memory.dmp

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memory/2664-4-0x00000000057D0000-0x0000000005AC2000-memory.dmp

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memory/2664-3-0x0000000003050000-0x0000000003060000-memory.dmp

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memory/2664-2-0x0000000003050000-0x0000000003060000-memory.dmp

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memory/2664-1-0x0000000002FF0000-0x0000000002FF8000-memory.dmp

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