Doc.Dropper.Agent-6368018-0 — Office (OOXML) malware analysis

Static analysis result for SHA-256 071b78e3feecc095…

MALICIOUS

Office (OOXML)

144.9 KB Created: 2017-11-07 18:13:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2017-11-13
MD5: 868aa01277473cc6139cdd0b128e6881 SHA-1: a20fc5172f86be000a1e4c7d07bd0b224a950485 SHA-256: 071b78e3feecc095b0d70d576604d53a875c34dab85139d1ab2f80e8d120ed0e
222 Risk Score

Malware Insights

Doc.Dropper.Agent-6368018-0 · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The sample is identified as malicious by ClamAV with the signature Doc.Dropper.Agent-6368018-0. High-severity heuristics indicate the presence of an embedded OLE object containing executable or script indicators, specifically an .lnk file, which is a common technique for exploiting CVE-2026-21514. This embedded object likely functions as a dropper for a second-stage payload.

Heuristics 5

  • ClamAV: Doc.Dropper.Agent-6368018-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6368018-0
  • Ole10Native package carries executable/script file type high OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in an executable or script-capable extension. Even without UI extension spoofing, embedding a runnable payload inside an Office document is a high-risk delivery pattern.
  • 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.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • 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 In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 4608 bytes
SHA-256: 42bbf103a99a1df6d7cd4bf4a38a1e2f309e29ec493ec1f73d874523670df316
Detection
ClamAV: Doc.Dropper.Agent-6368018-0
Obfuscation or payload: likely
Static shellcode analysis recovered command string(s): powershell.exe, PowerShell\v1.0\powershell.exe
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 2339 bytes
SHA-256: bb567c92b49853e7643a46eb27de65e0939fab24e6940839a849b44372578683
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis recovered command string(s): powershell.exe, PowerShell\v1.0\powershell.exe
emf_00.emf ooxml-emf OOXML EMF part: word/media/image1.emf 5424 bytes
SHA-256: a73e9d368cb1cd3f0dcec9ec47564605d264728d2c3e392262837e793e0618b7

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