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

Static analysis result for SHA-256 1a48160aeaa458f6…

MALICIOUS

Office (OLE) / .DOC

30.5 KB Created: 2020-12-05 02:37:00 Authoring application: Microsoft Office Word
MD5: 9519ce3d10a2a31cde1cf635f1b68b96 SHA-1: cda0e8642d2a73332fb673be22fa41549ad68f3b SHA-256: 1a48160aeaa458f668954f9eb79f9dc5bd8259a00adf10ecfac3acc9e6347f24
180 Risk Score

Malware Insights

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

The file is a malicious OLE document containing VBA macros. The presence of an AutoOpen macro and CreateObject calls indicates that the script is designed to execute code upon opening. The heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' specifically points to auto-execution with execution tokens, suggesting the script likely downloads and executes a second-stage payload. No specific family could be identified, but the delivery method is consistent with macro-based malware.

Heuristics 6

  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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.
  • Suspicious extracted artifact high 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.
  • 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
727a48cd47215fb9f9ae9ec1e2f820cb3e6bb46ac5cdaa4b0617ba8f1077c0cb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1784 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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