Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 84e5dfcc212c7229…

MALICIOUS

Office (OOXML)

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2021-09-27
MD5: 7fabffbfb607a11654f9e31b8c23cff0 SHA-1: 916c8c99342154496c076d98914a6e918d9be694 SHA-256: 84e5dfcc212c7229f85083df4dbadf7e88c3630fd1e3b0bc8ca58354aabc880e
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file exhibits critical heuristic firings for remote template injection and external relationships, indicating an attempt to load external content. The ClamAV detection as Doc.Downloader.Redline-9972754-0 strongly suggests a downloader functionality. The embedded URLs point to a suspicious IP address, likely serving as the source for a secondary payload. No scripts were extracted from this sample.

Heuristics 4

  • ClamAV: Doc.Downloader.Redline-9972754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Redline-9972754-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://51.158.90.229/........---------------------.------------------------.------/.........-----------------.wiz..._................wiz....) — a common remote-template-injection vector used by Hancitor, Emotet and many phishing campaigns. Word can fetch and apply the remote template; macros in that template may execute depending on Office policy and trust state.
  • External relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/webSettings.xml.rels: http://51.158.90.229/........---------------------.------------------------.------/.........-----------------.wiz..._...
  • 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://51.158.90.229/........---------------------.------------------------.------/.........-----------------.wiz..._................wiz Remote template reference
    • http://51.158.90.229/........---------------------.------------------------.------/.........-----------------.wiz..._................wiz...........wizRemote template reference
    • http://51.158.90.229/........---------------------.------------------------.------/.........-----------------.wiz..._Remote template reference
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)

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