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

Static analysis result for SHA-256 4c792d22965dc34c…

MALICIOUS

Office (OOXML) / .DOC

1.27 MB Created: 2022-11-01 14:58:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-11-11
MD5: 39fde882a0e5810cbe75f7288df9826e SHA-1: 672e7119a37b0b767512404daaff1a8efc2a679c SHA-256: 4c792d22965dc34c50c9e9ea29532d99525bcc40959be79e119a7866a77bdd07
230 Risk Score

Malware Insights

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

The sample is an OOXML document containing VBA macros, including a Document_Open macro and a critical Shell() call. The ClamAV heuristic identifies it as a downloader. The VBA script, though partially truncated and obfuscated, appears to construct and execute a command, likely to download and run a secondary payload. The presence of the Document_Open macro and Shell() call strongly suggests a malicious intent to execute arbitrary code upon opening.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Downloader.afc5c039d11fd238-9978787-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.afc5c039d11fd238-9978787-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4692f3f4277dc852d7d8337688f1da70b969a0d822a3f03a6eef3f316c77e900		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 18133 bytes
vbaProject_00.bin
59f4db764a306ec7aafc6051e815cc61a142ca2fc43679942f6d474806488591		 vba-project OOXML VBA project: word/vbaProject.bin 36864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.