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

Static analysis result for SHA-256 dfc13c361ea51165…

MALICIOUS

Office (OLE) / .DOC

703.5 KB Created: 2003-03-25 10:03:00 Authoring application: Microsoft Office Word
MD5: d31e3c60ee1536fbafd8901f4e3f56c5 SHA-1: 1ebd830bec5819e622b2213c2424557f6fd02424 SHA-256: dfc13c361ea51165a9826ce9493ef572be5f158dafd33c95b8cf86feefab7de8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1204.002 Malicious File

The sample is a Microsoft Word document containing VBA macros. The document body provides instructions for installing a program named 'WinVHB', explicitly telling the user to lower their macro security settings and then execute macros. Heuristics indicate the presence of VBA macros, a Shell() call, a CreateObject call, and auto-execution of macros with execution tokens. The document also mentions password-protected archives, suggesting a potential payload delivery mechanism. No specific malware family could be identified.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://www.vbv.baden-wuerttemberg.de/VHB/Seiten/start.htm

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
cc55d76260fb18530169a156fe275f9a9c0d535e59836b4d5d84f25f42908fdd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 232726 bytes

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