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

Static analysis result for SHA-256 c5a8bfdcd3b429b6…

MALICIOUS

Office (OLE) / .DOC

581.0 KB Created: 2022-01-25 11:36:00 Authoring application: Microsoft Office Word
MD5: 37a771a001125047d4f15a0ca3df7ce4 SHA-1: 067cfee987771e2a19db1404d88f57882ebd9943 SHA-256: c5a8bfdcd3b429b6b7ae7803b231a8c9f7e063b000d7ffb06f5aab843bbf188c
62 Risk Score

Malware Insights

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

The sample contains a VBA macro that executes upon opening the document. This macro, specifically the Document_Open subroutine, attempts to construct a URL by concatenating strings to 'tropitron5.ru/'. It then proceeds to open a password-protected document, likely a lure to trick the user into providing credentials or downloading further malware. The macro's intent is to download and execute a second-stage payload from the constructed URL.

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
c866f6c30e00ae5f8e870500558d7ba346d5badda4ad7064b18686742150b760		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1171 bytes

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