MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


ConnectWise


Vendor detections: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd
SHA3-384 hash: d0d592df88b96f4e4b9cf666cb601f6ca903b63fa2bbe4abde37307e2fde7d8828b9dc04d1a44774c13dd1a180fe7df1
SHA1 hash: 87253fe03d8cf9cff6f0d7509096b63ab6e3a8a2
MD5 hash: b3310484053ab0a7bd91832e480aa0ce
humanhash: arkansas-orange-mobile-hamper
File name:vcredist_x64.dll
Download: download sample
Signature ConnectWise
Create hunting rule
File size:11'251'712 bytes
First seen:2026-01-17 21:29:21 UTC
Last seen:Never
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 196608:3op5ZZ6ryGD0yANlDdBHGbQE9d00AGqHGbQE9d00AGIHGbQE9d00AGpHGbQE9d06:3UJ+03NldBmkEd0mkEdOmkEdHmkEd
Threatray 1'367 similar samples on MalwareBazaar
TLSH T112B6231473F8A119F2B72A3AED3951F15C767C22CD62D15E17583A4D2AB0E818AB3373
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Magika msi
Reporter aachum
Tags:cloudsynn-com ConnectWise msi


Avatar
iamaachum
https://www.crosshair-x.com/ => https://www.file-download-crosshairx.giize.com/CrosshairX.zip and https://www.crosshairx.pro/

ConnectWise ScreenConnect C2: cloudsynn.com

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
MSI
Details
MSI
an embedded setup program or component
Link:
https://research.acce.ciphertechsolutions.com/results/32c1a872-af47-46d4-b349-f2d18abea2ed/
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/49178/
Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=696bff4157243ef151cdf069
Tags:
connectwise shellcode virus msil
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm base64 evasive expand explorer fingerprint installer installer lolbin lolbin masquerade packed rundll32 wix
Link:
https://www.filescan.io/uploads/696bff39584f1963ad593561/reports/e2139b1e-9449-4d9f-a390-d59ab8997659/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Adware
File Type:
msi
First seen:
2025-12-02T21:03:00Z UTC
Last seen:
2026-01-04T15:23:00Z UTC
Hits:
~10
Detections:
not-a-virus:HEUR:RemoteAdmin.Win32.ConnectWise.gen not-a-virus:HEUR:RemoteAdmin.MSIL.ConnectWise.gen not-a-virus:VHO:RemoteAdmin.MSIL.ConnectWise.gen
Link:
https://opentip.kaspersky.com/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd/results?tab=lookup
Result
Threat name:
ScreenConnect Tool
Create hunting rule
Detection:
malicious
Classification:
evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1852621
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Contains functionality to hide user accounts
Enables network access during safeboot for specific services
Joe Sandbox ML detected suspicious sample
Modifies security policies related information
Multi AV Scanner detection for submitted file
Reads the Security eventlog
Reads the System eventlog
Sigma detected: Remote Access Tool - ScreenConnect Suspicious Execution
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1852621 Sample: vcredist_x64.dll.msi Startdate: 17/01/2026 Architecture: WINDOWS Score: 84 50 cloudsynn.com 2->50 54 Multi AV Scanner detection for submitted file 2->54 56 .NET source code contains potential unpacker 2->56 58 .NET source code references suspicious native API functions 2->58 60 3 other signatures 2->60 8 msiexec.exe 93 50 2->8         started        12 ScreenConnect.ClientService.exe 2 5 2->12         started        15 msiexec.exe 6 2->15         started        signatures3 process4 dnsIp5 32 C:\Windows\Installer\MSIAEE9.tmp, PE32 8->32 dropped 34 C:\Windows\Installer\MSIAA35.tmp, PE32 8->34 dropped 36 C:\...\ScreenConnect.WindowsFileManager.exe, PE32 8->36 dropped 40 9 other files (7 malicious) 8->40 dropped 64 Enables network access during safeboot for specific services 8->64 66 Modifies security policies related information 8->66 17 msiexec.exe 8->17         started        19 msiexec.exe 1 8->19         started        21 msiexec.exe 8->21         started        52 cloudsynn.com 176.96.137.225, 49689, 8041 DE-FIRSTCOLOwwwfirst-colonetDE Germany 12->52 68 Reads the Security eventlog 12->68 70 Reads the System eventlog 12->70 23 ScreenConnect.WindowsClient.exe 2 12->23         started        26 ScreenConnect.WindowsClient.exe 2 12->26         started        38 C:\Users\user\AppData\Local\...\MSIA3FA.tmp, PE32 15->38 dropped file6 signatures7 process8 signatures9 28 rundll32.exe 11 17->28         started        62 Contains functionality to hide user accounts 23->62 process10 file11 42 C:\Users\user\...\ScreenConnect.Windows.dll, PE32 28->42 dropped 44 C:\...\ScreenConnect.InstallerActions.dll, PE32 28->44 dropped 46 C:\Users\user\...\ScreenConnect.Core.dll, PE32 28->46 dropped 48 4 other malicious files 28->48 dropped 72 Contains functionality to hide user accounts 28->72 signatures12
Score:
45%
Verdict:
Susipicious
File Type:
ARCHIVE
Link:
https://malprob.io/report/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd/
Verdict:
Malicious
Threat:
Family.SCREENCONNECT
Link:
https://tip.neiki.dev/file/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd
Threat name:
ByteCode-MSIL.PUA.ConnectWise
Create hunting rule
Status:
Suspicious
First seen:
2025-11-30 22:34:19 UTC
File Type:
Binary (Archive)
Extracted files:
346
AV detection:
5 of 24 (20.83%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6vm5lsxyos4y7s65we4tjtjj5nxbryxorr65nuswzhvtonm2jh6q._file
Verdict:
malicious
Label(s):
admintool_screenconnect
Create hunting rule
Similar samples:
1e27ef7fb06896dbb30f2a7e10ac71adf68c4650013963bed181f0803235c2ff
ConnectWise
63505f13269fbcf30eb3533ce2ba4ec3b9b04bd48f278ac5813779bc0f8416b7
ConnectWise
ab258b4e6868de773c9d532d7410a53a3a81861163ac0238100d1bdd8f2b0ed1
ConnectWise
c7647723c82978c6ecfcfcf7448ace8c7f0e475cccd103f06931cda09ee27574
ConnectWise
error
ConnectWise
+ 1'357 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery persistence privilege_escalation ransomware revoked_codesign
Link:
https://tria.ge/reports/260117-1b52fsdx3f/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies data under HKEY_USERS
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Event Triggered Execution: Installer Packages
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Boot or Logon Autostart Execution: Authentication Package
Drops file in System32 directory
Enumerates connected drives
Event Triggered Execution: Component Object Model Hijacking
Executes dropped EXE
Loads dropped DLL
Binary is signed using a ConnectWise certificate revoked for key compromise.
Sets service image path in registry
Verdict:
Suspicious
Tags:
exploit
YARA:
cve_2014_6352
Link:
https://app.threat.zone/submission/fbbf16c5-be12-4dd4-aa11-f464e2a678b2
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:INDICATOR_RMM_ConnectWise_ScreenConnect
Create hunting rule
Author:ditekSHen
Description:Detects ConnectWise Control (formerly ScreenConnect). Review RMM Inventory
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:win_evilconwi_w0
Create hunting rule
Author:Karsten Hahn @ G DATA CyberDefense
Description:Settings from app.config that hide the connection of the client. These settings are potentially unwanted

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ConnectWise

Microsoft Software Installer (MSI) msi f559d5caf874b98fcbddb13934cd29eb6e18e2ee8c7dd6d256c9eb37359a49fd

(this sample)

  
Link
https://tria.ge/260117-z4n3zadt5h/behavioral2
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/49178/

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