RedLine Stealer — Office (OOXML) / .DOC malware analysis

Static analysis result for SHA-256 e9d99b13aacd39de…

MALICIOUS

Office (OOXML) / .DOC

10.1 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 12.0000
MD5: 817c9dd09f7e556d0ef6ff8fb68d89de SHA-1: 990f6d8a8c6662fe87da9414d2b4a80e693ac9c1 SHA-256: e9d99b13aacd39de4a6d28fec7c97bfde4127b9746d2e1ae1fcda4f65a375309
122 Risk Score

Malware Insights

RedLine Stealer · confidence 90%

MITRE ATT&CK
T1218.003 System Binary Proxy Execution: Rundll32 T1027 Obfuscated Files or Information T1105 Ingress Tool Transfer T1204.002 User Execution: Malicious File T1059.001 name own's the same as the other one T1218 name own's the same as the other one

The sample utilizes a remote template injection technique to fetch a malicious template from https://bitestan.com/c4fxhPYO. ClamAV identifies this file as Doc.Downloader.Redline, indicating it is a downloader for the RedLine Stealer malware family. The combination of remote template injection and thes specific AV detection provides high confidence in this attribution.

Heuristics 4

  • ClamAV: Doc.Downloader.Redline-9972754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Redline-9972754-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://bitestan.com/c4fxhPYO) — 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/webSettings.xml.rels: https://bitestan.com/c4fxhPYO
  • 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://bitestan.com/c4fxhPYO
    • 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

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