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

Static analysis result for SHA-256 0606ba599bf7a4fc…

MALICIOUS

Office (OLE) / .DOCX

176.3 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: ac9c876ff6f173997dcd3ef1aadc6bc5 SHA-1: fe0e95577ab096ca5bab43178faf6c7a6b86aed2 SHA-256: 0606ba599bf7a4fca591dc6e4c5b29805cb37284a37a2cefd0f5237a52ce46ac
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and uses 'CreateObject', indicating an attempt to execute code. The ClamAV heuristic 'Doc.Downloader.Generic-9763054-0' further confirms its downloader nature. The VBA script, though obfuscated, likely attempts to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6
vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes