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

Static analysis result for SHA-256 5c77f3a493cabe60…

MALICIOUS

Office (OLE) / .DOC

230.4 KB Created: 2019-03-15 21:12:00 Authoring application: Microsoft Office Word
MD5: 05d1a3b3f9172ca3d3c24b24803d66c0 SHA-1: 45701e1a720f9bd45ad056974eec66d741901496 SHA-256: 5c77f3a493cabe60afa8403288fd2cf521c373dbf286aa4299d5195a602161ba
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The file is a Microsoft Word document containing VBA macros, specifically an AutoOpen macro that utilizes GetObject. This indicates an attempt to execute malicious code upon opening. The presence of VBA macros and the AutoOpen function strongly suggests a macro-based malware delivery mechanism, commonly used for spearphishing attachments. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 6

  • ClamAV: Doc.Malware.Droo-6896835-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Droo-6896835-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
1d105597f7e784cb68577ec72fa5622ceae4f1b9f9796e020640ba6bbdaa6f01
vba-macro oletools.olevba.extract_macros (decoded VBA source) 60289 bytes