Malware Activity Detected

Sent when malware activity is detected. For more information, see Malware Detection.

General Information

Event ID: 41600

Event message details: Potential malware activity detected: <Details>

Severity: Warning

Parameters

Parameter Name	Description	Example
DetectionTimeUTC	Date and time when malware activity has been detected.	DetectionTimeUTC="03/20/2025 13:05:41"
OibID	Machine ID.	OibID="0e54d3bf-add8-48eb-9122-fad3ac1e8fb3"
ActivityType	Malware activity type. Possible values: DeletedUsefulFiles — Deleted files SuspiciousFilesInDelta — Indicators of compromise RansomwareNotes — Ransom notes and onion links RansomwareExtensions — Known suspicious files and extensions EncryptedData — Encrypted files YaraScan — Malware activity specified in the YARA rule AntivirusScan — Malware activity specified in the antivirus configuration file RenamedFiles — Renamed files	ActivityType="EncryptedData"
UserName	Name of the user who performed an operation.	UserName="TECH\user1"
UserFullInfo	Detailed information about the user who performed an operation. Includes the following data: fullName — the user name loginType	UserFullInfo="<ModifiedUserInfo fullName="TECH\user1" loginType="0" />"
ObjectName	Object name.	ObjectName="VM01"
VbrHostName	Backup server name. Can be a DNS name, an FQDN or an IP address.	VbrHostName="vbrsrv01.tech.local"
VbrVersion	Veeam Backup & Replication version.	VbrVersion="12.3.1.1139"
Version	Event version (service parameter).	Version="1"
Description	Event message details.	Description="Potential malware activity detected for OIB: 0e54d3bf-add8-48eb-9122-fad3ac1e8fb3 (VM01), rule: Encrypted data by user: TECH\user1."

Syslog Message Example

1 2025-03-20T14:06:09.662307+02:00 VBRSRV01 Veeam_MP - - [origin enterpriseId="31023"] [categoryId=0 instanceId=41600 DetectionTimeUTC="03/20/2025 13:05:41" OibID="0e54d3bf-add8-48eb-9122-fad3ac1e8fb3" ActivityType="EncryptedData" UserName="TECH\user1" UserFullInfo="<ModifiedUserInfo fullName="TECH\user1" loginType="0" />" ObjectName="VM01" VbrHostName="vbrsrv01.tech.local" VbrVersion="12.3.1.1139" Version="1" Description="Potential malware activity detected for OIB: 0e54d3bf-add8-48eb-9122-fad3ac1e8fb3 (VM01), rule: Encrypted data by user: TECH\user1."]