Doc.Dropper.Agent-6412232-1 — RTF malware analysis

Static analysis result for SHA-256 4f0c3c9cbc73a098…

MALICIOUS

RTF

948.7 KB Created: 2018-05-08 22:17:00 First seen: 2018-06-19
MD5: 77aaaa90e3c069711a9ccf48bd2eddc3 SHA-1: 1cb9372aab8d3f07418b44d809ec9a5d90957e28 SHA-256: 4f0c3c9cbc73a098c8e4d51c221b55b7ad9eae5031c8b7e2fe5c9c42364de9e8
262 Risk Score

Malware Insights

Doc.Dropper.Agent-6412232-1 · confidence 95%

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

The RTF file contains multiple embedded OLE objects and triggers their activation via \objupdate, exploiting CVE-2017-8759. This indicates the file is designed to drop and execute a secondary payload, as suggested by the ClamAV detection name 'Doc.Dropper.Agent-6412232-1'. The exploitation of a known vulnerability points to a malicious dropper.

Heuristics 6

  • CVE-2017-8759 — MSXML SAX OLE activation critical CVE likely CVE_2017_8759
    RTF contains a hex-encoded OLE1 object for Msxml2.SAXXMLReader.6.0 followed by an embedded OLE compound document, and the document requests OLE activation. This matches the RTF staging shape used for CVE-2017-8759 SOAP/WSDL parser code injection.
  • ClamAV: Doc.Dropper.Agent-6412232-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6412232-1
  • \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 10 \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 10

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002d0c.bin rtf-objdata-decoded RTF \objdata at offset 0x2D0C 33339 bytes
SHA-256: 83854707b3e78cd1d1d8f855a10cbe513810df680667f679d673b96d5152cf3f
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_01_off00018caa.bin rtf-objdata-decoded RTF \objdata at offset 0x18CAA 33339 bytes
SHA-256: b6cbb18e3fd962bea7f13ceb079acfdf530a07d41bd2f9e97c64d26613b7be72
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_02_off0002ebfd.bin rtf-objdata-decoded RTF \objdata at offset 0x2EBFD 33339 bytes
SHA-256: 2bae19565e399508144e0f2f48f516f7d1b722f65bcdba318eac3ce73011ba59
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_03_off00044b50.bin rtf-objdata-decoded RTF \objdata at offset 0x44B50 33339 bytes
SHA-256: b9b9f14ed39b7c64605080ecdac07680a65202497ef4d49a132cf59e36753ca7
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_04_off0005aaa3.bin rtf-objdata-decoded RTF \objdata at offset 0x5AAA3 33339 bytes
SHA-256: 1725b494a4260be1135578fdff463d17d7b725ab82cd03aa73d6085107dd1e44
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_05_off000709fd.bin rtf-objdata-decoded RTF \objdata at offset 0x709FD 33339 bytes
SHA-256: 212bee41c54104be2022e44cccb6740e8a7380eeb4663ae60bfdc1f2e940f4a7
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_06_off00086950.bin rtf-objdata-decoded RTF \objdata at offset 0x86950 33339 bytes
SHA-256: 06516f60f6d50b490d63322b63a4d8eadff5ac48b1c561d14b5ec0399daa4754
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_07_off0009c8a3.bin rtf-objdata-decoded RTF \objdata at offset 0x9C8A3 33339 bytes
SHA-256: 188d0252cd318b2d28c287d2c185aa9e1a11705de1bcad10e26e8e7ee1ec51ef
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_08_off000b27f6.bin rtf-objdata-decoded RTF \objdata at offset 0xB27F6 33339 bytes
SHA-256: d203b0c8d589033a3d645ddd1e77609a49cf0cd17e9cbcbd83e2dc8d696cc52c
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely
objdata_09_off000c8749.bin rtf-objdata-decoded RTF \objdata at offset 0xC8749 33339 bytes
SHA-256: ea3c7d48f6184021a223c1f4dd05441170e943b02bef9acf6a40d9cc0b2ad3e4
Detection
ClamAV: Doc.Dropper.Agent-6412232-1
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.