Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 289dddaee452877c…

MALICIOUS

Office (OLE)

42.5 KB Created: 2009-06-26 18:58:00 Authoring application: Microsoft Word 10.0
MD5: 7bc7214122aca616b061c5720001cf8b SHA-1: 5d3322b6d65ec18baaba2c5a3c015dcedf4e5ab0 SHA-256: 289dddaee452877c2a11ffba495c037f213c93dad255556f83b26625bc2d514d
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Pecas-2. Static analysis detected VBA macros within the OLE document, indicating a macro-based attack. The document body presents itself as a financial invoice from HECARO, S.L. to BANCO DE LA PEQUEÑA Y MEDIANA EMPRESA, S. A., likely intended to trick the recipient into enabling macros to view the details, which would then execute the malicious payload.

Heuristics 3

  • ClamAV: Doc.Trojan.Pecas-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Pecas-2
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
703156cd3366013555daf29695269cfc7bb01c6697cbcb4e347d2427c6d81b08
vba-macro oletools.olevba.extract_macros (decoded VBA source) 5563 bytes
Detection
ClamAV: Doc.Trojan.Pecas-2
Obfuscation or payload: unlikely