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

Static analysis result for SHA-256 725e66047be2a54e…

MALICIOUS

Office (OLE) / .DOCX

158.1 KB Created: 2020-10-19 11:46:00 Authoring application: Microsoft Office Word
MD5: 9f3550c9bf2afb633153bb2bf4783c30 SHA-1: 650ed8175baf02d27ddaa1c12808236bcfbb2050 SHA-256: 725e66047be2a54ea02b16d3531f3e755345b2de161135f6ddc0e8545dcd7f96
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing a VBA macro that executes via the Document_Open auto-exec function. The macro utilizes CreateObject, indicating an attempt to execute arbitrary code, likely to download and run a secondary payload. The ClamAV detection name 'Doc.Trojan.Agent-9780503-0' further confirms its malicious nature. The obfuscated VBA script and the presence of the Document_Open macro strongly suggest a spearphishing attachment delivery method.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9780503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9780503-0
  • 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
df3f11a486897c7a189da6e4d0ac7fa240cbe9ec205152865e455c6dee8f09c5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15642 bytes

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