Office (OLE) malware analysis — malicious · 022c209e582010c3

MALICIOUS

Office (OLE)

48.0 KB Created: 2018-01-23 18:58:00 Authoring application: Microsoft Office Word First seen: 2018-02-19

MD5: f156a81952a8c221ffcd8ab027912e0c SHA-1: 71d64775d16545175e2718b7cce9012d3cc111ad SHA-256: 022c209e582010c39023e3f4850bb2952103ee3d35bc25fe459e8e2055364d9f

142 Risk Score

Malware Insights

MITRE ATT&CK

T1218.005 Client Execution: Signed Binary Proxy Execution T1566.001 Spearphishing Attachment

The sample leverages Dynamic Data Exchange (DDE) to execute certutil.exe, which is instructed to download a file from 'http://currency.alderaantours.com/cows.xml'. The downloaded file is saved locally and then potentially processed by MSBuild.exe. This indicates a dropper functionality designed to fetch and execute a secondary payload.

Heuristics 4

ClamAV: Doc.Dropper.Agent-6451049-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.Agent-6451049-0
Reference to certutil (download/decode) high SC_STR_CERTUTIL

Reference to certutil (download/decode)
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://currency.alderaantours.com/cows.xml In document text (OLE body)
- http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

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