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

Static analysis result for SHA-256 b1547dac35076d8c…

MALICIOUS

Office (OLE) / .DOC

37.5 KB Created: 2021-02-07 04:14:00 Authoring application: Microsoft Office Word
MD5: e81a9543aec2041c91569ab0e710f887 SHA-1: fd258ef196a30a989d3336309c3b7342171aa08d SHA-256: b1547dac35076d8c682b112c485b76d1ab03aa22f9ae047f3b68676a105ad741
142 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing VBA macros, specifically an AutoOpen macro. The presence of GetObject calls and p-code execution suggests the macro is designed to run arbitrary code. While no specific URLs or further payloads were extracted, the AutoOpen macro indicates an immediate execution attempt upon opening the document, likely for initial compromise.

Heuristics 6

  • 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
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
b33735f29a1272e13dc03ba534e743cd59d0b288c87c30902ff95cd59562a2fc
vba-macro oletools.olevba.extract_macros (decoded VBA source) 3533 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).