Home Malware Programs Backdoors BKDR_DLDR.A

BKDR_DLDR.A

Posted: November 29, 2012

Threat Metric

Threat Level: 2/10
Infected PCs: 49
First Seen: November 29, 2012
OS(es) Affected: Windows

BKDR_DLDR.A is a backdoor Trojan that is included in a spam malware campaign related to Hurricane Sandy. The specific attack which is used to spread TROJ_ARTIEF.SDY to victimized computers affects NATO's Special Operations Headquarters (NSHQ). The unsolicited email has the subject 'Did Global Warming Contribute to Hurricane Sandy's Devastation' and carries a .DOC file with the same title. Cybercriminals behind this scam seem to have used the title of a recent New York Times blog post about Hurricane Sandy. The infectious file attachment, found as TROJ_ARTIEF.SDY, exploits the RTF Stack Buffer Overflow Vulnerability (CVE-2010-3333) which was addressed by Microsoft in November 2010 in MS10-087 to drop the backdoor BKDR_DLDR.A. BKDR_DLDR.A connects to its command-and-control (C&C) server to send and receive commands from remote attackers. Some of the commands that BKDR_DLDR.A can execute involve downloading, copying, modifying, creating files and folders, stealing file information, and acquiring time zone information among others. BKDR_DLDR.A is an Enfal/Lurid variant.

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