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

Static analysis result for SHA-256 ddfa667a6805bf8b…

MALICIOUS

Office (OLE) / .DOC

92.9 KB Created: 2018-08-01 15:10:00 Authoring application: Microsoft Office Word
MD5: 4ed6536cc686553f21e7583d5257e590 SHA-1: 437dcc1cc98f92a4bdfaab6746a87403ded4dba0 SHA-256: ddfa667a6805bf8b9216feb8df15b1590c340914d7142aa142ecb858d117ba9b
200 Risk Score

Malware Insights

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

The file contains VBA macros, specifically an AutoOpen macro that executes shell commands. This indicates an attempt to run arbitrary code upon opening the document. The ClamAV detection 'Doc.Malware.Valyria-6744207-0' strongly suggests malicious intent, likely involving the download and execution of a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Valyria-6744207-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-6744207-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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
ded1a105b41d6cbf4d52bbf78784ca5c336ba809070a86803d83bce8f764e44b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 5894 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 8 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.