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

Static analysis result for SHA-256 0fafb3c7a81ea232…

MALICIOUS

Office (OLE) / .DOCX

164.1 KB Created: 2020-10-20 08:13:00 Authoring application: Microsoft Office Word
MD5: 2cdf44c46a669a297b8ecebf80762608 SHA-1: 39ed47c7aa5d8803e612431ad59476a06e748564 SHA-256: 0fafb3c7a81ea23206adb43223e0c98b2994e94b38ff36fd2d034f2fedb74c7c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initial execution. The macro utilizes CreateObject, indicating it's likely attempting to instantiate and run malicious code. ClamAV detection as 'Doc.Trojan.Agent' further supports its malicious nature. The obfuscated nature of the VBA code suggests it's designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9781037-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9781037-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
8eb6ba0866f4c6c9ad4d97b0723246709e3ca63ed0491e35acc3191e90884d63		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17541 bytes

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