Loading malware…
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
2 distinct threat actors attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
When activated, these macros execute a PowerShell command, creating a scheduled task impersonating a Firefox browser updater. However, this task downloads the DeliveryCheck backdoor (also known as CapiBar and GAMEDAY) and launches it in memory, where it connects to the threat actor's command and control server to receive commands to execute or deploy further malware payloads.
When activated, these macros execute a PowerShell command, creating a scheduled task impersonating a Firefox browser updater. However, this task downloads the DeliveryCheck backdoor (also known as CapiBar and GAMEDAY) and launches it in memory, where it connects to the threat actor's command and control server to receive commands to execute or deploy further malware payloads.
14 distinct techniques documented for this family, organized by ATT&CK tactic.
When activated, these macros execute a PowerShell command, creating a scheduled task impersonating a Firefox browser updater.
Microsoft says that these malware payloads are embedded and launched from XSLT stylesheets.
When activated, these macros execute a PowerShell command, creating a scheduled task impersonating a Firefox browser updater.
...launches it in memory, where it connects to the threat actor's command and control server to receive commands to execute or deploy further malware payloads.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Malware/tool used alongside Kazuar in targeted Turla attacks; CAPIBAR is named in the title while DeliveryCheck is listed with the report.
A backdoor used by Turla/Secret Blizzard in phishing-led attacks against the defense sector and Microsoft Exchange environments. It is launched in memory, connects to C2 for tasking and payload delivery, and includes a server-side Microsoft Exchange component that can turn a legitimate Exchange server into a malware-distribution and command-and-control server.
DeliveryCheck [[URL_b3187638_112]] 2023 年 11 月 (v 5.119)
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.