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

Static analysis result for SHA-256 bef9051bb6e85d94…

MALICIOUS

Office (OLE) / .DOC

716.5 KB Created: 2019-02-18 06:17:00 Authoring application: Microsoft Office Word
MD5: 5c6148619abb10bb3789dcfb32f759a6 SHA-1: 9732cf8c9e84e992d8856537dc5988371bb73f7c SHA-256: bef9051bb6e85d94c4cfc4e03359b31584be027e87758483e3b1e65d389483e6
360 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic

The sample contains VBA macros, including an AutoOpen macro that uses CreateObject and CallByName, indicating an attempt to execute code. Heuristics also flag references to PowerShell and Windows Script Host, suggesting the macro is designed to download and execute a second-stage payload. The ClamAV detection as 'Doc.Dropper.Agent-6932616-0' further supports this dropper functionality.

Heuristics 10

  • ClamAV: Doc.Dropper.Agent-6932616-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6932616-0
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName 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
fae37c9ef4ce48c45806e9ffcee469b8578b76f98bbb10416f61bf7cb24ffe19		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 38669 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 36 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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