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

Static analysis result for SHA-256 c0484101a8ad9d96…

MALICIOUS

Office (OLE) / .XLS

1.01 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 7a9a6e2a484c942e9247513bf8420f13 SHA-1: 9a0399a2c75537687cdcaa939adb4a871b56f26e SHA-256: c0484101a8ad9d96190d39f100d6a6ed337873df68eb587c74a91b5cdd19cdd5
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE2Link file that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic firing indicates it attempts to load a remote resource from the URL http://tny.wtf/jk8Z5I. Although no VBA macros were found to be executable, the presence of the CVE exploit and the embedded URL strongly suggest a downloader or dropper functionality.

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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