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

Static analysis result for SHA-256 ac8309fa9a0dee53…

MALICIOUS

Office (OLE) / .XLS

974.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: be87b98fc2b32b28e143bd4b90730f6a SHA-1: c501bfbf28e186b4c9d0551288a46bd6f49e7854 SHA-256: ac8309fa9a0dee539797746bc727531b7e7a199c09ddd577e9cc85cfd9a949ee
128 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2017-0199 indicates that the OLE object within this Excel file is designed to exploit this vulnerability. The embedded URL, 'https://linkjago.me/LzcsRZ?&thigh=hot&misfit=hilarious&criticism=understood&boogeyman=late&nanoparticle', is highly suspicious and likely serves as a remote loader for a secondary stage payload. Although the VBA project itself contains no executable statements, the exploit mechanism is clearly defined by the CVE firing.

Heuristics 3

  • 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.
  • ClamAV: Xls.Downloader.Trojan-aa0b8f388d8573cd-aa0b8f388d8573cd-9950439-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Trojan-aa0b8f388d8573cd-aa0b8f388d8573cd-9950439-0
  • 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
382fc1344a2f0cf6eda18645d41def8d571debc6637bc7fe02a5c83715a51bef
vba-macro oletools.olevba.extract_macros (decoded VBA source) 2112 bytes