TA459
TA459 is a threat actor tracked in the provided content for spearphishing-led intrusion activity. The content states that TA459 targeted victims with spearphishing emails carrying malicious Microsoft Word attachments and attempted to get victims to open those attachments. It also states that TA459 exploited the Microsoft Word vulnerability CVE-2017-0199 for execution and used PowerShell to execute a payload. Additional context in the content links TA459-related infrastructure to domains including yandax[.]net, and Positive Technologies reported overlaps between ShadowPad infrastructure and activity clusters involving TA459. The content also notes TA459 in association with UDL-file-based spearphishing attachment activity. No higher-confidence attribution, nationality, or additional aliases beyond "ta459" are directly established in the provided content.
Know when an actor pivots toward your sector
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Tradecraft
30 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
4 malware families attributed to this actor across reporting.
Associated vulnerabilities
2 CVEs this actor has used in observed campaigns. 2 of them exploited in the wild.
...used exploits for... Word (CVE-2017-0199)...
This detection identifies instances where Windows Explorer.exe spawns PowerShell or cmd.exe processes, particularly focusing on executions initiated by LNK files. This behavior is associated with the ZDI-CAN-25373 Windows shortcut zero-day vulnerability, where specially crafted LNK files are used to trigger malicious code execution through cmd.exe or powershell.exe. This technique has been actively exploited by multiple APT groups in targeted attacks through both HTTP and SMB delivery methods.
Recent activity
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed as a threat actor associated with the PowerShell P/Invoke process injection API chain detection and related ATT&CK techniques.
Listed as a threat actor associated with PowerShell execution behavior relevant to this detection analytic.
Listed as a threat actor associated with the malicious file execution technique detected by this analytic.
Listed as a threat actor associated with use of Cobalt Strike PowerShell loader patterns.
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.