Rtf.Dropper.Agent-7701580-0 — RTF malware analysis

Static analysis result for SHA-256 956525ca3862decd…

MALICIOUS

RTF

98.1 KB First seen: 2020-07-24
MD5: 02f0f49508de2de9020e3d03d10afb7e SHA-1: 795c148085fabfe1a72f01c32d05185b8f1815b8 SHA-256: 956525ca3862decd20db8145a2fed230da945f35b7e60afa3ecf597f3e2386ee
180 Risk Score

Malware Insights

Rtf.Dropper.Agent-7701580-0 · confidence 95%

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

The sample is an RTF document containing embedded OLE objects, flagged by multiple high-severity heuristics for OLE activation and automatic linking. ClamAV identifies it as Rtf.Dropper.Agent-7701580-0, indicating its function as a dropper. The embedded OLE object data, specifically objdata_00_off00000495.bin, is the likely payload carrier, suggesting the document is designed to exploit OLE vulnerabilities for initial execution.

Heuristics 5

  • ClamAV: Rtf.Dropper.Agent-7701580-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-7701580-0
  • 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
  • Suspicious extracted artifact medium 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000495.bin rtf-objdata-decoded RTF \objdata at offset 0x495 33295 bytes
SHA-256: 9fa23a38f3293c28a4b19a8f52d561dc0b2137a556e2bfdd7cfa55fe8a33204e
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL