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

Static analysis result for SHA-256 ae764ec5438bb920…

MALICIOUS

Office (OLE) / .XLS

440.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4d0addd5b0f9ac742cc374b221333549 SHA-1: 9cb0d87bd167c7e17208f0c439cdf741f3a8ea90 SHA-256: ae764ec5438bb920104e7fdbd244fddfc0894b708654983153e49a26fe7f99a0
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 the exploitation of a known vulnerability in OLE2Link to load remote content. The extracted URL 'http://hop.fyi/30dp7' is highly suspicious and likely serves as the initial download source for a secondary payload. Although the VBA project contains no executable statements, the presence of the CVE exploit and the external URL strongly suggest a downloader functionality.

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