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

Static analysis result for SHA-256 6ca94e81683b8a3a…

MALICIOUS

Office (OLE) / .DOC

156.0 KB Created: 2020-09-22 12:54:00 Authoring application: Microsoft Office Word
MD5: b3204bbeb0d3f5b2a5d9e6c5dbb9277a SHA-1: 5d1a7aaa0190abc0e0574d1e80620725e6776c9d SHA-256: 6ca94e81683b8a3a91b0205b6dd1fc1155a443028bde46f528a439cf100e5a81
242 Risk Score

Malware Insights

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

The sample contains a Document_Open VBA macro, which is a common technique for executing malicious code upon opening the document. The macro utilizes CreateObject and GetObject calls, indicative of an attempt to download and execute a second-stage payload. The obfuscated nature of the VBA script suggests an effort to evade detection, and the presence of a ClamAV detection further supports its malicious nature.

Heuristics 7

  • ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
63bc7201a259a9f3eac24fc4f9990c61de6bed3eb66abffd8ef4af2ac67d9b62
vba-macro oletools.olevba.extract_macros (decoded VBA source) 15901 bytes