Malicious RTF — malware analysis report

Static analysis result for SHA-256 6683c319c2c5cac8…

MALICIOUS

RTF

3.75 MB Created: 2017-06-17 14:03:00 First seen: 2018-07-14
MD5: 9a3aa1f12c52be922ea8ffcd815c94fc SHA-1: 13dcc8172683a5c06deaa68dcfa6257bcb79ba0b SHA-256: 6683c319c2c5cac885e6b888655c56c7e0d308ade6dc9ec45bcf6b1fd2dbad47
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The RTF file contains embedded OLE objects, specifically a package object, which is a strong indicator of malicious intent. ClamAV detection as 'Win.Phishing.Suspicious-6355521-4' further supports a phishing-related attack pattern. The presence of embedded OLE objects suggests the file may be used to deliver a malicious payload or exploit. The SHA256 hash is included as a primary IOC.

Heuristics 5

  • ClamAV: Win.Phishing.Suspicious-6355521-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Phishing.Suspicious-6355521-4
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • OLE object data medium RTF_OBJDATA
    RTF contains 2 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — 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/2003/wordml In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off003a7733.bin rtf-objdata-decoded RTF \objdata at offset 0x3A7733 12388 bytes
SHA-256: 3590b893e90ad0c5f16a1f097eef06d096167e753e8aead78311d278d7cbf9ae

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