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APT18 is a China-linked advanced persistent threat group associated with cyberespionage against U.S. organizations, including healthcare targets. It is also tracked as Wekby, Dynamite Panda, TG-0416, Threat Group-0416, Combine, Elderwood Group, Red Wraith, Satin Typhoon, Scandium, and SilverViper. The group uses legitimate credentials to access externally available remote services and the Windows command shell to execute commands on compromised systems. Its post-compromise capabilities include transferring files onto victim machines, enumerating directories, and collecting system information. It establishes persistence through user-level Windows Registry autostart mechanisms and deletes tools and batch scripts to remove operational artifacts. APT18 has deployed Pisloader, a variant of the HTTPBrowser remote-access trojan, against a U.S.-based organization. Pisloader uses DNS requests for command-and-control beaconing and receives commands through DNS TXT records. Its concealment techniques include string obfuscation, single-byte XOR transformations, and return-oriented programming to impede analysis. Other documented APT18 activity uses HTTP for command-and-control communications. The group has also exploited Adobe Flash Player vulnerability CVE-2015-5119 through exploit kits.
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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.
Attributed origin per open-source reporting.
23 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
4 malware families attributed to this actor across reporting.
2 CVEs this actor has used in observed campaigns. 2 of them exploited in the wild.
The attackers exploited the Heartbleed vulnerability affecting the OpenSSL to steal 4.5 million patient records.
In July 2015, the Wekby APT group was spotted exploiting the CVE-2015-5119 Flash Player vulnerability in their exploit kits, the exploit code was disclosed as the result of the attack against the Hacking Team.
4 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed in the detection annotation metadata.
Referenced only as an annotated actor associated with the detection technique.
Listed only as an annotation associated with the LOLBAS uncommon-port detection.
Listed only in the detection's ATT&CK/actor annotations.
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.