ELMER

Description

(FireEye) The exploit documents delivered during the December campaigns dropped a binary containing an embedded variant of a backdoor we refer to as ELMER. 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. Table 2 lists the ELMER backdoors observed during the December campaigns.

Names

Name
ELMER
Elmost

Category

Malware

Type

• Reconnaissance
• Backdoor
• Info stealer
• Exfiltration

Information

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

Mitre Attack

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

Malpedia

• https://malpedia.caad.fkie.fraunhofer.de/details/win.elmer

Other Information

Uuid

b2351a30-d7be-4309-8f5d-9818164c9811

Last Card Change

2020-04-23