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

Static analysis result for SHA-256 453c3ac3a5da64e3…

MALICIOUS

Office (OLE) / .DOC

216.9 KB Created: 2020-09-21 20:39:00 Authoring application: Microsoft Office Word
MD5: 0c54676ac2d94ac2fe603e1cceb8c5c5 SHA-1: 0d999346989b7f8654a02c6ff972bd6f56f1dcda SHA-256: 453c3ac3a5da64e336f00f48a7e77a64a0d1a69b2bb227fe318abd0e873501ab
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains VBA macros, including a Document_Open auto-exec macro, which is a common technique for initiating malicious activity upon opening the document. The presence of CreateObject and GetObject calls, along with a critical ClamAV detection for 'Doc.Downloader.Generic-9764666-0', strongly indicates that this document is designed to download and execute a secondary payload. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764666-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764666-0
  • 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
  • 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
6d2f50f334b8e082813c694e310720d341c184a4af51360bc43b61318b8ab2c5
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19051 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.