Rtf.Dropper.Agent-7145798-0 — RTF malware analysis

Static analysis result for SHA-256 c92b6e418793510e…

MALICIOUS

RTF

14.3 KB First seen: 2018-09-04
MD5: a91e302ca1dcffce03d1cf07a6f721ae SHA-1: 1bf1255e02c8ab2a7d36f185148e99658cc7c7a6 SHA-256: c92b6e418793510eb0db9d284c4e92e9e7989bae9a23654ee70f282335ef4e64
160 Risk Score

Malware Insights

Rtf.Dropper.Agent-7145798-0 · confidence 95%

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

The RTF file contains OLE object data and an \objupdate directive, indicating an attempt to exploit a vulnerability through an embedded OLE object. ClamAV detection confirms this as Rtf.Dropper.Agent-7145798-0, suggesting its purpose is to act as a dropper for further malicious activity.

Heuristics 4

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • ClamAV: Rtf.Dropper.Agent-7145798-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-7145798-0
  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000090a.bin rtf-objdata-decoded RTF \objdata at offset 0x90A 4133 bytes
SHA-256: 675df15bc31670ab911f046036378331afaeaddb3084f34c7a6f19a9554851b6

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