MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 1fd040c91b03f71d5a120f3c6b696da441d8424ba6f874991f5e7f1b014beb65. 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: 10
| SHA256 hash: | 1fd040c91b03f71d5a120f3c6b696da441d8424ba6f874991f5e7f1b014beb65 |
|---|---|
| SHA3-384 hash: | 4c527e0865d800267c48db95ef962b72ca83f2acc94152209b119032e2a2edb58e472b8f2cd25ae6e7ff86e126372f0c |
| SHA1 hash: | d5b2b79df6158f66daedf570e5762a2359296fd1 |
| MD5 hash: | 11dd50d77ae2c24c8331d15f6abe97d6 |
| humanhash: | purple-pizza-cat-triple |
| File name: | Microsoft_Excel.msi |
| Download: | download sample |
| Signature | ConnectWise |
| File size: | 16'670'720 bytes |
| First seen: | 2025-10-03 17:17:56 UTC |
| Last seen: | Never |
| File type: |  msi |
| MIME type: | application/x-msi |
| ssdeep | 393216:JT3dRx9fRT3dbT3dNT3dMT3dTT3dYhVT3dYhYT3dYh:N3dRr13dH3dh3d03d/3dIJ3dIA3dI |
| Threatray | 809 similar samples on MalwareBazaar |
| TLSH | T1EBF6230222ED8565E9F3173AFA7A86A01A347C389912C06FA761391D1B73F4094FB777 |
| 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 | Anonymous |
| Tags: | ConnectWise msi signed |
Code Signing Certificate
| Organisation: | CHRISSY'S CREDIBLE CLEANING LLC |
|---|---|
| Issuer: | SSL.com EV Code Signing Intermediate CA RSA R3 |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-09-03T10:51:10Z |
| Valid to: | 2026-09-03T10:51:10Z |
| Serial number: | 7301bd775d3e4dc6539b217a2c3cb137 |
| Cert Central Blocklist: | This certificate is on the Cert Central blocklist |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | b0c4cbb44682b9b883f5d482f7d80abdafc8805a9edad6fcfee1b064d970fbc0 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
1
# of downloads :
57
Origin country :
USVendor Threat Intelligence
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
90.2%
Tags:
connectwise phishing
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
expand installer lolbin obfuscated remote rundll32 signed threat
Result
Verdict:
MALICIOUS
Link:
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Clean
File Type:
msi
First seen:
2025-10-04T02:53:00Z UTC
Last seen:
2025-10-04T03:15:00Z UTC
Hits:
~10
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
.Net CAB:COMPRESSION:LZX CAB:COMPRESSION:NONE Executable Managed .NET Office Document PDB Path PE (Portable Executable) PE File Layout SOS: 0.21 SOS: 0.24 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.31 SOS: 0.36 SOS: 0.39
Verdict:
Malicious
Threat:
Connectwise
Threat name:
ByteCode-MSIL.Trojan.Generic
Status:
Suspicious
First seen:
2025-09-24 16:55:33 UTC
File Type:
Binary (Archive)
Extracted files:
191
AV detection:
6 of 24 (25.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
admintool_screenconnect
Similar samples:
+ 799 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
8/10
Tags:
backdoor discovery persistence privilege_escalation ransomware rat revoked_codesign
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
Executes dropped EXE
Loads dropped DLL
Boot or Logon Autostart Execution: Authentication Package
Drops file in System32 directory
Event Triggered Execution: Component Object Model Hijacking
Badlisted process makes network request
Enumerates connected drives
ConnectWise ScreenConnect remote access tool
Binary is signed using a ConnectWise certificate revoked for key compromise.
Sets service image path in registry
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | CP_AllMal_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | INDICATOR_RMM_ConnectWise_ScreenConnect |
|---|---|
| Author: | ditekSHen |
| Description: | Detects ConnectWise Control (formerly ScreenConnect). Review RMM Inventory |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | win_evilconwi_w0 |
|---|---|
| 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.
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