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

Static analysis result for SHA-256 a80a538e201a8d23…

MALICIOUS

Office (OLE) / .DOC

171.0 KB Created: 2021-01-25 09:28:00 Authoring application: Microsoft Office Word
MD5: 14462d4d974bc29f6802193ec47cdeef SHA-1: 4ba6e2fd0f05bc77f18c4c65e541549fbbcddbe4 SHA-256: a80a538e201a8d2318aa87a58508b9e0c83b1cbd00f0c5d21d7005f10221f5eb
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file contains VBA macros, specifically a Document_Open macro that uses GetObject, indicating an attempt to automatically execute code when the document is opened. The ClamAV detection name 'Doc.Malware.Valyria-10034158-0' further confirms its malicious nature. The embedded URL, though marked as benign, is listed as an indicator. The primary intent appears to be the execution of a malicious macro to download and run a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Valyria-10034158-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-10034158-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
f3c1208957a8588b8a5352b63af9a94a87401fa2b1f98d6dafce63f68312781e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8529 bytes

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