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Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.
Backdoor.PowerExchange: PowerShell-based malware that can log into an Exchange Server with hardcoded credentials and monitor for emails sent by the attackers. It uses an Exchange Server as a C&C.
5 distinct techniques documented for this family, organized by ATT&CK tactic.
The first evidence of malicious activity on the target’s network occurred on February 1, 2023, when an unknown PowerShell script (file name: joper.ps1) was executed... Backdoor.Tokel: Has the ability to execute arbitrary PowerShell commands... Trojan.Dirps: Used to enumerate all files in a directory and execute PowerShell commands.
It uses an Exchange Server as a C&C. Mails received with “@@" in the subject contain commands sent from the attackers which allows them to execute arbitrary PowerShell commands... The result of the command is sent back to the attacker via email.
If an attachment is detected, it will decode it using Base64 and run it via PowerShell... uf: Decodes the file path and the file contents using Base64 and calls WriteAllBytes to write the file to the system... On September 1, the attackers used Certutil to download Plink to each machine.
1 indicator attributed across vendor reports, sandbox runs, and researcher write-ups. Full values are available in Mallory.
File hashes (MD5, SHA-1, SHA-256) from samples and reports.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.