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

Static analysis result for SHA-256 8bd6a8555939af5f…

MALICIOUS

Office (OLE) / .XLS

964.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ff6ca372d80251aeadd10122ac4d46c0 SHA-1: 26543f78c7c1bfad35c0e3e2acb9d5972cbd1257 SHA-256: 8bd6a8555939af5f504e3bcadfa876e1447cadbcbd163b340cd784cafd4dfd8c
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 attempts to load a remote resource. The extracted URL, https://linkjago.me/RHCYXp?&damage=nasty &briefs=momentous&highlight=delicious&middleman=magenta&spank, is likely the source of the 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
faef16cfc3b69e6dacc60198a7ccc61c4bb61c8632529929cd74db2189ccdc82
vba-macro oletools.olevba.extract_macros (decoded VBA source) 906 bytes