Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 88b9aacee4cb5e64…

MALICIOUS

Office (OLE)

283.0 KB Created: 2010-01-04 21:58:00 Authoring application: Microsoft Word 11.2
MD5: c78e37be3ae77ac9d3e94dd8a5b42161 SHA-1: 3e256a331ebcf4495df65510e457c8966a4742d3 SHA-256: 88b9aacee4cb5e64bb52bc92e700597b9ba1d40fcb1dab2b245f6b6dfcd3caf8
180 Risk Score

Malware Insights

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

The file is detected as malicious by ClamAV (Doc.Trojan.Thus-10) and contains VBA macros, including a Document_Open macro, indicating it is designed to execute code upon opening. The document body presents a benign cultural festival announcement, a common lure for social engineering. The embedded URLs are likely used for downloading secondary payloads.

Heuristics 5

  • ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Thus-10
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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://www.artmovesafrica.org/
    • http://www.culturesfrance.com
    • http://www.donkoseko.org
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
26c42d9fb5e6e807a5819d5fc5d3cb45dd58036e5ce806253e9a9ed3d55ee626
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2313 bytes
Detection
ClamAV: Doc.Trojan.Thus-10
Obfuscation or payload: unlikely