Tag: CVE-2023-38831

6 Attack Reports | 0 Vulnerabilities

Attack reports

Head Mare and Twelve: Joint attacks on Russian entities

Head Mare and Twelve, two hacktivist groups, have launched joint attacks on Russian companies. Head Mare has expanded its toolkit, now using tools previously associated only with Twelve, such as the CobInt backdoor. The attackers gained initial access through phishing emails and compromised contrac…

infrastructure sharing

Published: March 13, 2025

Downloadable IOCs: 0

Russian State Actors: Development in Group Attributions

This analysis explores the evolution of Russian state-backed cyber actors and their operations. It highlights the activities of several prominent groups, including UNC2589, APT44 (Sandworm), APT29, and APT28. These actors, associated with various Russian intelligence agencies, have been involved in…

Published: March 8, 2025

Downloadable IOCs: 0

"Breach Report" from UAC-0099 (CERT-UA#12463)

The Ukrainian CERT-UA investigated cyberattacks by UAC-0099 against government organizations during November-December 2024. The attacks involved emails with malicious attachments, including exploits for CVE-2023-38831. The LONEPAGE program, used for command execution, has evolved to use encrypted f…

lonepage program

Published: December 18, 2024

Downloadable IOCs: 25

Intensifies Attacks On Russia With PhantomCore

The Head Mare hacktivist group has escalated its campaign against Russian targets using the PhantomCore backdoor. The group employs deceptive ZIP archives containing malicious LNK files and executables disguised as archive files to deploy PhantomCore. This C++-compiled backdoor, which replaces earl…

Published: December 11, 2024

Linked vulnerabilities : CVE-2023-38831

Downloadable IOCs: 31

Head Mare: adventures of a unicorn in Russia and Belarus

Head Mare is a hacktivist group targeting companies in Russia and Belarus since 2023. They use phishing campaigns exploiting the CVE-2023-38831 vulnerability in WinRAR for initial access. Their toolkit includes custom malware like PhantomDL and PhantomCore, as well as publicly available tools like …

Published: September 2, 2024

Linked vulnerabilities : CVE-2023-38831

Downloadable IOCs: 52

Disrupting FlyingYeti's campaign targeting Ukraine

This report details Cloudforce One's real-time effort to detect, deny, degrade, disrupt, and delay a phishing campaign by the Russia-aligned threat actor FlyingYeti targeting Ukraine. The campaign aimed to capitalize on anxiety over potential loss of housing and utilities by enticing targets to ope…

Published: May 31, 2024

Linked vulnerabilities : CVE-2023-38831

Downloadable IOCs: 8

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