Win.Dropper.Agent-211918 — RTF / .DOC malware analysis

Static analysis result for SHA-256 0d7e491efa072d6f…

MALICIOUS

RTF / .DOC

75.1 KB Authoring application: Msftedit 5.41.15.1515
MD5: 82797a7f17aecbd2df0b0424a5efde47 SHA-1: 21ce18a3f6113f6f318afc4f3d7cab95975fc1cd SHA-256: 0d7e491efa072d6feeecc7a97ba7c341930107ce0804f94b9fcb0347bd9969ef
260 Risk Score

Malware Insights

Win.Dropper.Agent-211918 · confidence 95%

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

The RTF file contains an embedded OLE object which decodes to a PE executable. ClamAV signatures identify this as Win.Dropper.Agent-211918, a known dropper. The presence of a PE header within the RTF object strongly suggests the file is designed to deliver a secondary payload, likely an executable.

Heuristics 6

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • ClamAV: Win.Dropper.Agent-211918 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Dropper.Agent-211918
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000cf.bin
40f5f20d10cb31c815933040693831c40f0d7247a11a90f6006e63e1c2aee4b9
rtf-objdata-decoded RTF \objdata at offset 0xCF 33604 bytes
Detection
ClamAV: Win.Dropper.Agent-211918
Obfuscation or payload: unlikely