Malicious Office (OLE) / .DOCX — malware analysis report

Static analysis result for SHA-256 0eabb37538a78fb8…

MALICIOUS

Office (OLE) / .DOCX

259.3 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word
MD5: 5b467856d1f84b095bc6270af0b861f1 SHA-1: b2df15121033ec689043e912a022d9b1243a1224 SHA-256: 0eabb37538a78fb8b43917d7263b14ceeb7cd09922f2d1c397b8db18cab99e2b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the 'Document_Open' heuristic. The macro utilizes 'CreateObject' and appears to be designed to download and execute a second-stage payload, consistent with the ClamAV detection of 'Doc.Downloader.Generic'. The obfuscated nature of the script prevents a more detailed analysis of its specific actions or the exact URL it contacts.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18919 bytes

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