Punishing Owl
Punishing Owl is a newly identified, suspected politically motivated hacktivist threat actor active since at least December 2025, targeting Russian state institutions, a Russian government security agency, scientific enterprises, and IT organizations (including Russian critical infrastructure targets). The group publicly claimed a breach on December 12, 2025 and leaked stolen internal documents via a data leak site and a Mega.nz repository. In at least one intrusion, the actor gained access to the victim’s DNS configuration, created a subdomain, and modified DNS records to redirect traffic to a Brazil-hosted server that served the stolen data and a political manifesto; the announcement was timed for Friday evening (6:37 PM) to slow response and maximize impact. Post-compromise, Punishing Owl conducted business email compromise (BEC) against the victim’s partners/contractors using email addresses created within the victim’s domain and sending from Brazilian infrastructure; the actor also set up supporting infrastructure including fake TLS certificates and IMAP/SMTP services. Initial access and execution are described as phishing-based: emails deliver password-protected ZIP archives containing Windows shortcut (LNK) files masquerading as PDF documents. Opening the LNK triggers PowerShell to download and execute a PowerShell stealer dubbed ZipWhisper (download observed from bloggoversikten[.]com). ZipWhisper harvests sensitive data including browser credential files, cookies, and saved passwords; stages collected data as ZIP archives in AppData\Local\Temp (with archive naming patterns including username and chunk numbers); and uploads the archives back to the same command-and-control server via a customized endpoint structure. Analysis noted code comments suggesting possible use of AI tooling to generate parts of the script. One social media account associated with Punishing Owl was administered from Kazakhstan.
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Tradecraft
6 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Associated malware families
1 malware family attributed to this actor across reporting.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Politically motivated (suspected hacktivist) actor targeting Russian state/scientific/IT organizations; steals and leaks data; uses phishing with password-protected ZIPs delivering LNK that runs PowerShell to install a stealer (ZipWhisper) for data exfiltration.
Politically motivated (suspected hacktivist) actor targeting Russian entities; uses phishing with password-protected ZIPs containing LNK masquerading as PDFs to execute PowerShell that downloads the ZipWhisper stealer; steals and leaks data on dark web.
Newly emerged hacktivist group conducting intrusions and data leaks against Russian government security agencies, including DNS tampering to redirect traffic to attacker-controlled infrastructure, followed by business email compromise against partners/contractors and credential theft via a PowerShell-based stealer delivered through password-protected ZIPs containing LNK files.
Hacking and leaking data from Russian companies; operating via dark web leak activity.
The version that knows your environment.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.