Suspicious File Downloaded From File-Sharing Website Via Certutil.EXE

Detects the execution of certutil with certain flags that allow the utility to download files from file-sharing websites.

Detection logic

Platform: ESXi Linux macOS Network Devices Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: windows
Log source category: process_creation

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
forensicitguy.github.io/agenttesla-vba-certutil-download/	Unclassified	3
learn.microsoft.com/en-us/windows-server/administration/windows-commands/certutil	Product documentation	6
lolbas-project.github.io/lolbas/Binaries/Certutil/	Tool	6from 2 sources
news.sophos.com/en-us/2021/04/13/compromised-exchange-server-hosting-cryptojacker-targeting-other-exchange-servers/	Threat report	4
twitter.com/egre55/status/1087685529016193025	Social post	4from 2 sources
www.hexacorn.com/blog/2020/08/23/certutil-one-more-gui-lolbin	Unclassified	3
www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/	Threat report	10from 2 sources