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

Static analysis result for SHA-256 d518d5b096d9d534…

MALICIOUS

Office (OOXML) / .DOC

168.9 KB Created: 2021-04-28 05:31:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: c0211e198f68b68bb83deb716cca6d06 SHA-1: 038467272a555d691b98d66a5d1ce87fba3fdb4d SHA-256: d518d5b096d9d5349adc233413961ab057835ea712d610f19c929207b52f9faa
140 Risk Score

Malware Insights

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

The OOXML document contains a VBA project with an AutoOpen macro, indicating malicious intent. The macro utilizes CreateObject to likely download and execute a second-stage payload from the provided URL. The presence of a long, encoded blob within the extracted VBA further supports this conclusion.

Heuristics 5

  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • 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://goose-gaines2011.com/bijol/2bKqaFiam3y1OavCfnB1SvPQqUDa7q0AFpqd/OCICGT92ZFjhcZrdhteaIeUYrPb0Xmi5dr/H9ngm4gzGkSiCuTNEEyUKqzYnTa/D3SzLsSBS6e12bKPSrNtt5cV/laka14?page=NVZDd2ykLqRI2Ngf8nAUD&cid=EuSYLY&4xvF9UCY8=eIznFmA&SL9VJcMVU=Z8RI2pytD4t&=zuPskqnmIhk3b8VlIASCLKpFkbfSRZ
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartex
    • 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/2012/wordml
    • http://schemas.microsoft.com/office/word/2015/wordml/symex
    • 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
2cc96f1b27ca28633e5fd0f0d4a8a2064b0cb460d667522da154d0e19f5ffe58		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2850 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
2e0feb96f51918a19ff084b9c3d6c6fdc49313a9a48aecccc53277857029c99f		 vba-project OOXML VBA project: word/vbaProject.bin 26624 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved artifact contains 1 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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