Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 f0df25ea720e6dcd…

MALICIOUS

Office (OLE) / .XLS

1.01 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: d178550ccbceb07c4175b26df95b854c SHA-1: b9963b21b99610f15d223f4428d8efeccb50cdf9 SHA-256: f0df25ea720e6dcd761d2050d552b180dd8b70d29b43e0099c65ffba997a34a4
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File T1059.005 Command and Scripting Interpreter: Visual Basic

The file is an OLE2Link object that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic explicitly points to a URL, http://tny.wtf/WP, which is likely used to download and execute a second-stage payload. No VBA macros were found to be executable, but the presence of the OLE2Link object and the associated URL strongly indicate a malicious intent to compromise the user's system.

Heuristics 2

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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