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

Static analysis result for SHA-256 e5c7cf685fc8a492…

MALICIOUS

Office (OLE) / .DOCX

159.3 KB Created: 2020-09-17 16:56:00 Authoring application: Microsoft Office Word
MD5: b7f365f3781646221ad80b527777f047 SHA-1: ac331f9e44eec181a7f6b01d28f7959783e833b0 SHA-256: e5c7cf685fc8a492d002057fa7a17c4bf0931ec66ab71cfe60631b0c5b80ae7b
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is a Microsoft Office document containing a large VBA macro. The 'Document_Open' macro is automatically executed upon opening, and it utilizes 'CreateObject' to initiate malicious actions. The ClamAV detection 'Doc.Downloader.Generic-9763026-0' strongly suggests this is a downloader. The VBA macros are designed to execute arbitrary code, likely downloading and executing a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9763026-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763026-0
  • 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
d72f45ff27ad6de46c4e2f18d1cb6c13c4a0c6682629fccb5d0be1c4ab69db7a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19870 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 20 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.