Xls.Downloader.Trojan-aa0b8f388d8573cd — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 7edad7c62ce4233b…

MALICIOUS

Office (OLE) / .XLS

973.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 025310d1e911d6bba798ba8432a868f7 SHA-1: d832a84b3ab52f97b2fb909f4edd9ed7f2f773d6 SHA-256: 7edad7c62ce4233b08d5cf756b9b1c7ff0567eb1b6786977c8fa6d153d604087
130 Risk Score

Malware Insights

Xls.Downloader.Trojan-aa0b8f388d8573cd · confidence 95%

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.005 Visual Basic

The file is identified as malicious by ClamAV and exhibits critical heuristic firings for CVE-2017-0199, indicating it's a remote loader. The embedded URL is used to download a secondary payload. While VBA macros are present, they do not contain executable statements, suggesting the exploit relies on the OLE vulnerability itself.

Heuristics 4

  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://linkjago.me/YTECcB?&angiosperm=questionable&south

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