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

Static analysis result for SHA-256 712d97e2a6189b39…

MALICIOUS

Office (OOXML) / .DOC

2.86 MB Created: 2022-08-16 14:42:00 UTC Authoring application: Microsoft Office Word 14.0000 First seen: 2022-08-22
MD5: a895e755df61c771f264c00460466064 SHA-1: 301b063fb5518c30ce419c47aee878f7281fa7cd SHA-256: 712d97e2a6189b39774aeb6f9c356cd31376e34a40720b6622b29d67e0e73c93
242 Risk Score

Malware Insights

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

The file is an OOXML document containing a VBA project with a renamed part to evade detection. The presence of a Document_Open macro, GetObject, and CallByName functions indicates malicious intent. The VBA script, though truncated, uses obfuscated API calls and appears to be a downloader, likely responsible for fetching and executing a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.afc5c039d11fd238-9978787-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.afc5c039d11fd238-9978787-0
  • VBA project part renamed to evade filename detection high OOXML_VBA_PROJECT_RENAMED
    The VBA project is bound through the OOXML relationship/content type but its part is not named vbaProject.bin. Legitimate Office producers always emit vbaProject.bin; renaming it hides the macros from path-only scanners (observed in the SVCReady loader).
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName call
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present (project part renamed away from vbaProject.bin: word/HRktIVKeuQ.bin)
  • 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
c3fdd70197d772ff1dd1e55def8065c548857a5a2d1c067a9f7db9d394eaf761		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 17708 bytes
vbaProject_00.bin
b73b3b48e3a9cefd14085a5ed4ab5857fd3408691c1427705aec0447eef92116		 vba-project OOXML VBA project: word/HRktIVKeuQ.bin 13824 bytes

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