MALWARE FAMILY

DeerStealer

Internal ID: win.deerstealer

aliases

Last seen:Mar 17, 2026

Intelligence Profile

According to Broadcom, DeerStealer is an information stealer written in Delphi and targeting devices running an windows operating system. The malware has hidden VNC capabilities for stealthy remote desktop control, collecting crypto wallets from USB sticks and over 800 browser extensions. It exfiltrates the stolen data in form of a ZIP archive to a botnet C2 server.

Threat Analysis

DeerStealer is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.

External References

→https://bazaar.abuse.ch/browse/signature/DeerStealer/

→https://www.broadcom.com/support/security-center/protection-bulletin/deerstealer-malware-spread-via-fake-google-authenticator-websites

→https://www.cryptika.com/deerstealer-malware-delivered-via-weaponized-lnk-using-lolbin-tools/

→https://www.esentire.com/blog/dont-get-caught-in-the-headlights-deerstealer-analysis

→https://www.malwarebytes.com/blog/threat-intel/2024/07/threat-actor-impersonates-google-via-fake-ad-for-authenticator

Quick Facts

TypeMalware Family

Aliases1

Also Known As

win.deerstealer

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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