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

Static analysis result for SHA-256 453ae71569c49be9…

MALICIOUS

Office (OLE) / .DOC

201.6 KB Created: 2019-03-13 16:28:00 Authoring application: Microsoft Office Word
MD5: 412f5adf7a4017c80e0d217eb373b9fc SHA-1: f4284d23c95b82d5506e50b84106643a8d3bab94 SHA-256: 453ae71569c49be9931836de1975dbe6391f599db93ebf1d25dde287b6a7b4e0
200 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing VBA macros, specifically triggering an AutoOpen macro that uses GetObject for execution. This indicates the document is designed to run malicious code upon opening. The presence of VBA macros and the AutoOpen execution method strongly suggest a downloader or droppper functionality, aiming to fetch and execute further stages of malware. The ClamAV detection further confirms its malicious nature.

Heuristics 6

  • ClamAV: Doc.Malware.00536d-6895331-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.00536d-6895331-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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.
  • 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
1b08abd0fda58ba8d5f6d838f3853f115f3559eb3ef48a12eae256707229ff27
vba-macro oletools.olevba.extract_macros (decoded VBA source) 40124 bytes