Malicious RTF — malware analysis report

Static analysis result for SHA-256 e46d1a3825fd70a0…

MALICIOUS

RTF

66.2 KB Created: 2016-12-05 11:18:00 First seen: 2018-02-07
MD5: 8e28b6f9d815c755342d2c4a4d6a7134 SHA-1: 30f0ef041f8d17219c5aab1997a344def43c59c9 SHA-256: e46d1a3825fd70a03c884ba15a7f0328e634ee043bc275e30f554faa0a661378
122 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains OLE object data and heuristics indicate that an automatically linked OLE object is being updated, suggesting an attempt to execute embedded code. The presence of an 'enable lure' heuristic further supports that the document is designed to trick the user into enabling content, which would trigger the OLE object's execution. The benign URL is likely a distraction or a misdirection.

Heuristics 5

  • Automatically linked OLE object high RTF_OBJAUTLINK
    RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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/2003/wordml In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000f2f7.bin rtf-objdata-decoded RTF \objdata at offset 0xF2F7 2579 bytes
SHA-256: e852c1d8acfc522c09e87367e062bfd7ee892f3ebde3e4873873987690750c51