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

Static analysis result for SHA-256 93b749082651d7fc…

MALICIOUS

Office (OLE) / .DOC

471.0 KB Created: 2019-03-10 18:46:00 Authoring application: Microsoft Office Word
MD5: 806adc79e7ea3be50ef1d3974a16b7fb SHA-1: b0ab6ce3d044a1339a705f233e113c44a1bced10 SHA-256: 93b749082651d7fc0b3caa9df81bad7617b3bd4475de58acfe953dfafc7b3987
460 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.005 Visual Basic T1059.003 Windows Command Shell

The file is a malicious Office document containing VBA macros, specifically a Document_Open macro designed to execute code. The document body explicitly instructs the user to 'Enable Editing' and 'Enable Content', indicating a social engineering lure to bypass macro security. Heuristics indicate the use of PowerShell and Windows Script Host, suggesting the macro likely downloads and executes a second-stage payload. The ClamAV detection 'Doc.Dropper.Agent-6889438-0' further supports its role as a dropper.

Heuristics 13

  • ClamAV: Doc.Dropper.Agent-6889438-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6889438-0
  • 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://schemas.openxmlformats.org/drawingml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
50f1757c9f77c72d4b872348f94e122ac4e834ca485d7dc8ec62332a29131dff		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 5831 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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