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

Static analysis result for SHA-256 f37f5eb4b2a9401d…

MALICIOUS

Office (OLE) / .DOC

182.5 KB Created: 2021-12-14 07:07:00 Authoring application: Microsoft Office Word
MD5: b5bde27026f7089c8bb85f5120670f97 SHA-1: 6e39ae0c274176e3374eab2a7519f22497b7ba38 SHA-256: f37f5eb4b2a9401d5543ba8769428c87ca79b1497af2a1e0f2b361050b79f048
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a Document_Open VBA macro that executes obfuscated code. The script first concatenates strings to form the URL "http://0bamandos.ru/" and then attempts to construct a secondary document path by concatenating "http://p://hel.poc". The macro's intent appears to be to download and open a secondary malicious document, likely for further payload delivery. The obfuscation and use of a Document_Open macro are common techniques for initial access.

Heuristics 3

  • 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://schemas.openxmlformats.org/drawingml/2006/main
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1b1ff1ba75d6b65562566a8fa69bda05952242689edb4f74a03ddf491ca2209e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1033 bytes

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