Gamaredon — Office (OOXML) malware analysis

Static analysis result for SHA-256 ed9f005f5c0e0b27…

MALICIOUS

Office (OOXML)

210.1 KB Created: 2021-06-24 15:11:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-07-02
MD5: 35211b75b7a3627af4fc2276c4a1ef6a SHA-1: 57d90e3c67b0763f34ef715033faf3fd21bfc274 SHA-256: ed9f005f5c0e0b27386b90cd66642da9f039df6268c944d559799fa41f828dfe
122 Risk Score

Malware Insights

Gamaredon · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Gamaredon-9966166-1', strongly suggesting the Gamaredon family. Heuristics indicate remote template injection and external relationships pointing to 'http://false.grafitto.ru/DCH00-01/rehearsal.dot', which is likely used to download a secondary payload. The document body contains what appears to be Ukrainian police department information, potentially used as a lure.

Heuristics 4

  • ClamAV: Doc.Downloader.Gamaredon-9966166-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Gamaredon-9966166-1
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://false.grafitto.ru/DCH00-01/rehearsal.dot) — 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/settings.xml.rels: http://false.grafitto.ru/DCH00-01/rehearsal.dot
  • 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://false.grafitto.ru/DCH00-01/rehearsal.dot Remote template reference
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • 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.microsoft.com/office/word/2010/wordprocessingDrawingIn 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/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
    • https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwijm9i3_bDxAhVgRpEFHSqgBgYYABACGgJscg&ae=2&ohost=www.google.com&cid=CAASEuRoS0VoeuA3fZ8qGT9pxb-K7Q&sig=AOD64_2tsktNs7zHgVo5K1ICKXIZZFGROQ&q&adurl&ved=2ahUKEwjartG3_bDxAhXHxIsKHVwJCN4Q0Qx6BAgEEAEIn document text (OOXML body / shared strings)

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