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

Static analysis result for SHA-256 015f1050070a2507…

MALICIOUS

Office (OLE) / .DOCX

163.8 KB Created: 2020-10-20 08:13:00 Authoring application: Microsoft Office Word
MD5: 32cff4072dbc2e60e475b076f34438a4 SHA-1: 5ca6cd362888822cb32ab5634a16e00fccf56045 SHA-256: 015f1050070a250730f4de15f6ef453df59199e04a4d93cd8bb8ce7cf90bde36
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a VBA macro that automatically executes upon opening the document, as indicated by the 'Document_open' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics. The macro's obfuscated code, including calls to 'CreateObject', suggests it is designed to download and execute a second-stage payload. The ClamAV detection further confirms its malicious nature.

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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