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StrikeShark is an intrusion cluster associated with the previously undocumented SharkLoader malware loader, which is used to deploy Cobalt Strike Beacon largely in memory. The activity has affected organizations across multiple countries, with confirmed victims including government bodies, diplomatic missions, and software development companies. Targeting patterns indicate broad opportunistic access combined with a notable concentration on government and diplomatic networks, consistent with possible intelligence-gathering objectives, although attribution and intent remain unconfirmed at high confidence. StrikeShark obtains initial access through exploitation of known vulnerabilities in internet-facing applications and network appliances, and also through trojanized installers masquerading as trusted software. Observed exploited technologies include Microsoft Exchange, SharePoint, Openfire, GeoServer, Fortinet, Cisco IOS XE, Apache Shiro, F5 BIG-IP, Hikvision, and Zimbra. Researchers assessed with medium confidence that the operators primarily relied on publicly available proof-of-concept exploits. SharkLoader is a multi-stage loader engineered for stealth and defense evasion. It commonly abuses DLL sideloading, including use of legitimate Windows binaries to load malicious DLLs, and has been observed using the Perfect DLL Hijacking technique to manipulate Windows loader behavior and create malicious threads safely from DLL initialization. The malware decrypts and reflectively loads subsequent stages in memory, installs extensive API hooks, redirects selected Windows APIs to runtime-generated direct system calls, interferes with Event Tracing for Windows logging, performs parent-process spoofing, and modifies memory protections around the embedded Beacon during sleep intervals to reduce memory-scanning visibility. After compromise, StrikeShark establishes persistence through scheduled tasks, registry Run keys, and in some server intrusions webshell deployment. Post-compromise activity includes system reconnaissance, Active Directory enumeration, credential theft, LSASS dumping, NTDS extraction, and lateral movement using Cobalt Strike Beacon and multiple open-source post-exploitation tools. No definitive code reuse, infrastructure overlap, or operational similarity has been established linking StrikeShark to a previously known threat actor. Some tooling has been assessed with low confidence as possibly associated with Chinese-speaking developers, but there is insufficient evidence for confident attribution to any known group or state sponsor.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
32 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
2 malware families attributed to this actor across reporting.
13 CVEs this actor has used in observed campaigns. 13 of them exploited in the wild.
Beyond these incidents, we identified additional exploitation activity targeting vulnerabilities in multiple internet-facing enterprise applications and network appliances including those listed below: Remote Code Execution (RCE) Apache Shiro: CVE-2016-4437
In the incident affecting an Indonesian diplomatic entity, the threat actor exploited Microsoft Exchange vulnerabilities, including CVE-2021-26855 (ProxyLogon), to gain access to the target environment.
Beyond these incidents, we identified additional exploitation activity targeting vulnerabilities in multiple internet-facing enterprise applications and network appliances including those listed below: Remote Code Execution (RCE) Microsoft SharePoint: CVE-2021-27076
Beyond these incidents, we identified additional exploitation activity targeting vulnerabilities in multiple internet-facing enterprise applications and network appliances including those listed below: Remote Code Execution (RCE) Hikvision Products: CVE-2021-36260
Beyond these incidents, we identified additional exploitation activity targeting vulnerabilities in multiple internet-facing enterprise applications and network appliances including those listed below: Remote Code Execution (RCE) Zimbra Collaboration Suite: CVE-2022-27925
8 more CVEs tied to this actor tracked in Mallory.
14 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An intrusion cluster using the SharkLoader malware loader to compromise networks via fake software installers and exploitation of known vulnerabilities, followed by in-memory execution, persistence, reconnaissance, credential theft, LSASS dumping, NTDS extraction, and lateral movement using Cobalt Strike Beacon and other post-exploitation tools.
Intrusion cluster using the custom SharkLoader malware loader to deploy Cobalt Strike Beacon against government-related, diplomatic, and software development targets across multiple regions. The group gains initial access through exploitation of vulnerable internet-facing applications and custom droppers disguised as legitimate software installers, then conducts reconnaissance, credential theft, Active Directory enumeration, LSASS dumping, NTDS extraction, persistence, and lateral movement.
A newly identified intrusion cluster conducting broad opportunistic and strategic intrusions across multiple countries and sectors, using exploitation of internet-facing applications and custom droppers to deploy SharkLoader, which in turn loads Cobalt Strike Beacon. Activity includes persistence via scheduled tasks and registry Run keys, webshell deployment, reconnaissance, Active Directory enumeration, credential dumping, and stealth through API hooking and ETW suppression.
Previously undocumented intrusion cluster using SharkLoader to deploy Cobalt Strike Beacon, exploiting internet-facing applications and using malicious droppers against government organizations, diplomatic entities, software development companies, and other sectors across multiple countries.
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.