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

Static analysis result for SHA-256 e94ac68acb3789ea…

MALICIOUS

Office (OOXML) / .DOC

168.5 KB Created: 2021-04-27 05:36:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 41803e220ec9e140f987d7e1d4f348fe SHA-1: d5b8d3cba80d8ceb3dff29e5940e55aabcf91d10 SHA-256: e94ac68acb3789ea9117198a42a5167a1ce3b230ec1395ba4972002d25e1c370
260 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The document contains VBA macros, including an AutoOpen macro, which are designed to execute code upon opening. Critical heuristics indicate the use of Shell() and WScript.Shell, suggesting the script attempts to download and execute a second-stage payload from the provided URL. The presence of these indicators strongly points to a malicious document designed for malware delivery.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • 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://alone-pham2010.com/bijol/84491/3h5qDHNACbWVZkgMceY0duMWvbVq3U/jMyVfmZ7lMCfzAbEoVSbLlq9aX3rzmtmrEUMKp4/95475/18931/eY/YEJczWKH72PYbHirT716P1j/7941/fozu11?eExpp=EubkJ7D&time=oOCkwdDlC&=NWvACcxddQXF9A4pxFKoXNj5&cid=tMy00S7kFoCVUofDJvJ&OigpUEn=S1Ysk8q6lbxCwUF&=GEeKTBtN9jenOdCKI&sid=c5b77s25NVTG6slDmw
    • 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
a0913d55e05a414ec4742b3925a8b54703fe5fdd4397f7f60fc9c84c6426c71c		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2518 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
55b9495c01475e81e1aa90c766508b042c52e5c4881dbe8b588ec0c41415b18f		 vba-project OOXML VBA project: word/vbaProject.bin 26112 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 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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