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

Static analysis result for SHA-256 519b8fe7e38d5ee2…

MALICIOUS

Office (OLE) / .DOC

369.5 KB Created: 2019-03-11 11:44:00 Authoring application: Microsoft Office Word
MD5: 09aabd2613d339d90ddbd4b7c09195a9 SHA-1: c13e3e26bcffd003fd01fe3813b4175a376ee43c SHA-256: 519b8fe7e38d5ee2d628d04ceb04ce934975a696032c834ba1f3ffb6dce0f0e7
460 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject and CallByName. Heuristics indicate references to PowerShell and Windows Script Host, and the document instructs the user to enable macros. This suggests the macro is designed to execute a payload, likely a dropper, as indicated by the ClamAV detection 'Doc.Dropper.Agent-6896384-0'. No specific family could be identified.

Heuristics 13

  • ClamAV: Doc.Dropper.Agent-6896384-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6896384-0
  • Reference to PowerShell high SC_STR_POWERSHELL
    Reference to PowerShell
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
68d9d5857c41abe7fe44da60ca83426897b474734c8b0b65f587cc0d22517d21		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5882 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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