ScreenConnect[.]ClientService[.]exe

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General

Target
ScreenConnect.ClientService.exe
Size 93KB
Sample260812-gzmegaxtct
SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
MD5 752d5cdda2a1d93d27e38f98a5d23fc2
SHA1 d4fd4ff0709271323b8d401579270e6567b6e360
SHA512 f48a21229a8d8cc80371e9aeeb47bb10ff0f3b0363e854ca30db833c74519d37ee21349fa9201c7ed5392ddf5d0ff2a66d250821d109dc0ac7425ab2a5a3fea2
SSDEEP 1536:wg1s9pgbNBAklbZfe2+zRVdHeDxGXAorrCnBsWBcd6myJkgUU0HMQ7oOgU:ZhbNDxZGXfdHrX7rAc6myJkgUU0HvMU
TLSH
T1E8935B13B5C28872D473093158E0DAB49A3FF9215E61DEAB3798022E4F741C1AE75EB7
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

revoked_codesign

Malware Config

Signatures

Revoked Certificate in Chain 1 IoCs

One or more certificates in the signing chain have been revoked, indicating potential compromise.

revoked_codesign

resource
ScreenConnect.ClientService.exe

Signed with revoked ConnectWise certificate 1 IoCs

Binary is signed using a ConnectWise certificate revoked for key compromise.

revoked_codesign

resource	yara_rule
sample	revoked_cert_connectwise

Untrusted Codesign Signers 1 IoCs

Codesigned file was signed by an untrusted entity.

resource
ScreenConnect.ClientService.exe

File Explorer

ScreenConnect.ClientService.exe

.exe 93KB

ScreenConnect.ClientService.exe

IMPHASH 5f510e22d141c137199e2ff4021a57be
SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
MD5 752d5cdda2a1d93d27e38f98a5d23fc2
SHA1 d4fd4ff0709271323b8d401579270e6567b6e360
SHA512 f48a21229a8d8cc80371e9aeeb47bb10ff0f3b0363e854ca30db833c74519d37ee21349fa9201c7ed5392ddf5d0ff2a66d250821d109dc0ac7425ab2a5a3fea2
SSDEEP 1536:wg1s9pgbNBAklbZfe2+zRVdHeDxGXAorrCnBsWBcd6myJkgUU0HMQ7oOgU:ZhbNDxZGXfdHrX7rAc6myJkgUU0HvMU
TLSH
T1E8935B13B5C28872D473093158E0DAB49A3FF9215E61DEAB3798022E4F741C1AE75EB7
MD5 SHA1 SHA512 SSDEEP TLSH

windows:5 windows x86 arch:x86

Revoked Certificate in Chain

One or more certificates in the signing chain have been revoked, indicating potential compromise.

revoked_codesign
Signed with revoked ConnectWise certificate

Binary is signed using a ConnectWise certificate revoked for key compromise.

revoked_codesign
Untrusted Codesign Signers

Codesigned file was signed by an untrusted entity.

PE Signature issue

Digest

cc:f9:95:f9:bc:4a:fd:00:0b:b4:4c:22:fe:cd:cd:6a:b0:c6:1e:14:df:10:ab:27:5d:61:9c:ea:0f:20:0a:9a

Digest Algorithm

sha256

PE Digests Matches

Trusted

Not trusted

Signing Certificate

CN=Connectwise\, LLC,O=Connectwise\, LLC,L=Tampa,ST=Florida,C=US

Chains

Apr 8, 2025

CN=Connectwise\, LLC,O=Connectwise\, LLC,L=Tampa,ST=Florida,C=US

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=Connectwise\, LLC,O=Connectwise\, LLC,L=Tampa,ST=Florida,C=US

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Serial Number

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Not revoked

Timespan

Apr 29, 2021 - Apr 28, 2036

Subject

CN=Connectwise\, LLC,O=Connectwise\, LLC,L=Tampa,ST=Florida,C=US

Serial Number

0b:93:60:05:1b:cc:f6:66:42:99:89:98:d5:ba:97:ce

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageCodeSigning

Revocation Status

Revoked

Revocation Date

Aug 17, 2022

Timespan

Aug 17, 2022 - Aug 15, 2025

Subject

CN=DigiCert Timestamp 2024,O=DigiCert,C=US

Serial Number

0b:ae:66:bc:5a:ba:7f:95:87:c6:f9:e9:04:e3:33:04

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Sep 26, 2024 - Nov 25, 2035

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Serial Number

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Ext Key Usages

ExtKeyUsageTimeStamping

Revocation Status

Not revoked

Timespan

Mar 23, 2022 - Mar 22, 2037

Subject

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Serial Number

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Key Usages

KeyUsageDigitalSignature, KeyUsageCertSign, KeyUsageCRLSign

Revocation Status

Not revoked

Timespan

Aug 1, 2022 - Nov 9, 2031

Minor OS version

Major OS version

Entry point

8575

Magic Number

267

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE

PDB paths

C:\Users\jmorgan\Source\cwcontrol\Custom\DotNetRunner\Release\DotNetServiceRunner.pdb

mscoree

CorBindToRuntimeEx

shlwapi

StrCatW PathFindFileNameW StrCpyW PathRemoveExtensionW

kernel32

SetEvent CloseHandle LoadLibraryW DecodePointer GetProcAddress GetLastError GetCurrentProcessId GetModuleHandleW SetStdHandle Sleep CreateEventW InitializeCriticalSectionAndSpinCount GetModuleFileNameW GetCommandLineW GetStringTypeW FlushFileBuffers GetConsoleCP GetConsoleMode SetFilePointerEx WriteConsoleW DeleteCriticalSection RtlUnwind GetFileType GetProcessHeap FreeEnvironmentStringsW IsDebuggerPresent OutputDebugStringW RaiseException EnterCriticalSection LeaveCriticalSection UnhandledExceptionFilter SetUnhandledExceptionFilter GetCurrentProcess TerminateProcess IsProcessorFeaturePresent GetStartupInfoW QueryPerformanceCounter GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead CreateFileW SetLastError EncodePointer TlsAlloc TlsGetValue TlsSetValue TlsFree FreeLibrary LoadLibraryExW ExitProcess GetModuleHandleExW GetModuleFileNameA MultiByteToWideChar WideCharToMultiByte GetStdHandle WriteFile GetACP HeapFree HeapSize HeapReAlloc LCMapStringW HeapAlloc FindClose FindFirstFileExA FindNextFileA IsValidCodePage GetOEMCP GetCPInfo GetCommandLineA GetEnvironmentStringsW

advapi32

RegisterServiceCtrlHandlerExW CreateServiceW QueryServiceStatus CloseServiceHandle OpenSCManagerW SetServiceStatus RegSetValueExW StartServiceW RegCreateKeyW StartServiceCtrlDispatcherW OpenServiceW RegOpenKeyW

oleaut32

VariantInit SysFreeString SysAllocString SafeArrayPutElement SafeArrayCreateVector VariantClear

Sharing

General

Malware Config

Signatures

File Explorer

ScreenConnect.ClientService.exe

PE Signature issue

mscoree

shlwapi

kernel32

advapi32

oleaut32

generic