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

Static analysis result for SHA-256 12898ccc6a9cf84d…

MALICIOUS

Office (OOXML) / .DOC

89.3 KB Created: 2024-11-25 08:51:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 9db5584eca2b1e730f43a22fe423d3d6 SHA-1: 96a491acb5e0ab5d9d1bcb92720382ba9d959e02 SHA-256: 12898ccc6a9cf84dda412ea2bc17de58de6742ffae8392a84294fb7f95fcde27
84 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample exhibits characteristics of a malicious OOXML document, specifically triggering heuristics for remote template injection and external relationships. The embedded URL points to a suspicious domain, likely serving as a lure for a secondary payload. The presence of an embedded OLE object further suggests an attempt to deliver malicious content.

Heuristics 5

  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://short.ruksk.com/qXSvmc?&wind-chime=utopian&line=abrasive&patriarch=painful&cartridge=slimy&lightning) — a common remote-template-injection vector used by Hancitor, Emotet and many phishing campaigns. Word can fetch and apply the remote template; macros in that template may execute depending on Office policy and trust state.
  • External relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/settings.xml.rels: https://short.ruksk.com/qXSvmc?&wind-chime=utopian&line=abrasive&patriarch=painful&cartridge=slimy&lightning
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • Suspicious extracted artifact info 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 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 https://short.ruksk.com/qXSvmc?&wind-chime=utopian&line=abrasive&patriarch=painful&cartridge=slimy&lightning
    • http://www.wowform.com
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2006/wordml

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
f236536e5f31216edfa9d145a8f8de74e7fb34a25e0470842c7d70d2c5d405e0		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Office_Excel_97-2003_Worksheet1.xls 182784 bytes
ooxml_oleobject_00_ole10native_00.bin
bdf966db1cc87fea5dc0c7408b7d9a750bac7995b62c8f4514feb7ad6e8c069e		 ole-package OOXML word/embeddings/Microsoft_Office_Excel_97-2003_Worksheet1.xls Ole10Native stream: MBD00074A93/Ole10Native 26683 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.59, consistent with packed or encrypted content.
ooxml_oleobject_01.bin
211c7c5719d40d91d081acf5ff91f4190c5eedf9a7ec8f3a20608f0f18ff4615		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/Microsoft_Office_Excel_Worksheet1.xlsx 26550 bytes
emf_00.emf
a4ae28d467d266c639ff45ec8cab9baa1aba5d8045c54523199f4ed83779dbbc		 ooxml-emf OOXML EMF part: word/media/image1.emf 52712 bytes
emf_01.emf
cafa904c5cb5e70d820ac212c29b6b492c657a10bf932d531bf9a4551864cd04		 ooxml-emf OOXML EMF part: word/media/image2.emf 112564 bytes

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