MALWARE FAMILY

ELMER

Internal ID: win.elmer

aliases

Last seen:Mar 17, 2026

Intelligence Profile

ELMER is a non-persistent proxy-aware HTTP backdoor written in Delphi, and is capable of performing file uploads and downloads, file execution, and process and directory listings. To retrieve commands, ELMER sends HTTP GET requests to a hard-coded CnC server, and parses the HTTP response packets received from the CnC server for an integer string corresponding to the command that needs to be executed.

Threat Analysis

ELMER is a malware family tracked by threat intelligence researchers and catalogued in the Malpedia dataset. It represents a distinct malicious software lineage with identifiable code characteristics, behaviors, and victimology.

External References

→https://attack.mitre.org/groups/G0023

→https://attack.mitre.org/software/S0064

→https://cybergeeks.tech/a-detailed-analysis-of-elmer-backdoor-used-by-apt16/

→https://www.fireeye.com/blog/threat-research/2015/12/the-eps-awakens-part-two.html

→https://www.symantec.com/security-center/writeup/2015-122210-5724-99

Quick Facts

TypeMalware Family

Aliases1

Also Known As

win.elmer

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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