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

Static analysis result for SHA-256 835af12782ca2dba…

MALICIOUS

Office (OLE) / .DOC

159.3 KB Created: 2021-01-13 14:17:00 Authoring application: Microsoft Office Word
MD5: 7331da42502b2800e59977fe14339b12 SHA-1: eec204604a834ab9d67d17cf1b32be47f99949c3 SHA-256: 835af12782ca2dbae6295295570220a669cad1e2dbb5e0dfec640ad4bf4a160e
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 configured to auto-execute upon opening, utilizing 'CreateObject' to likely download and execute a second-stage payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' further supports its role as a downloader.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
96dc378d8785782a38cac5ad5d77aa40c8fabc4fceeed54d50500697eb497989		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10771 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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