Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 3e5f21042dd828b7…

MALICIOUS

Office (OOXML)

9.3 KB Created: 2018-09-23 21:02:00 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2019-06-27
MD5: 60390e0b06863d47beed9c919e88e319 SHA-1: 826bdfa7be8a188bc265801901617a1ad6f02897 SHA-256: 3e5f21042dd828b7aed16547f38749fee83589ca56a75b0e36eddaa714b1e8c1
180 Risk Score

Malware Insights

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

The sample is an OOXML file containing an embedded OLE object, specifically identified as a Microsoft Equation Editor exploit. ClamAV detections confirm this, flagging it as Doc.Exploit.CVE_2017_11882-6934206-0. This exploit targets CVE-2017-11882, which allows for arbitrary code execution when the embedded object is activated. The document body text is generic and does not provide further clues about the attack's specific lure.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/oleObject1.bin 4096 bytes
SHA-256: 6ba70d85aaf30e2b0773ea0ea225a134f82d5b33c126b772012c694ef8a19a5f
Detection
ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0
Obfuscation or payload: unlikely

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