APT / THREAT GROUP

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 known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

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

TypeAPT / Threat Group

Aliases2

Also Known As

win.deerstealerDeerStealer

External Intelligence

Malpedia: 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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