Logan — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 a0ac35ec0ee3a97f…

MALICIOUS

Office (OLE) / .DOC

184.0 KB Created: 2020-10-22 06:54:00 Authoring application: Microsoft Office Word
MD5: 9a1ffdc0ed9aab8e6901054fd24655e5 SHA-1: 491210447eb53de3a3b0eb2bafd2790696c8d528 SHA-256: a0ac35ec0ee3a97f79ecb953f29c1dca13fa5661a5df78ba82012b16c5b291d4
240 Risk Score

Malware Insights

Logan · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a downloader. The presence of a VBA macro in macros.bas, coupled with the auto-execution, suggests the macro is designed to run automatically upon opening the document. This macro likely downloads and executes a second-stage payload, consistent with the 'Logan' downloader family identified by ClamAV. The obfuscated document body content further supports the malicious intent.

Heuristics 7

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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.
  • 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
9979b97c308d841b566985c48e8a84b999556c3e27641c5af6c36c44f3b0664e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18953 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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