Office (OLE) / .XLS malware analysis — malicious · c306daeb532d48d6

MALICIOUS

Office (OLE) / .XLS

1.07 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: 59b463677f083cb8bf771e27162ef915 SHA-1: d97b1cdbb09e2b4b93f8de903460fade41382ff0 SHA-256: c306daeb532d48d6f51f35c1612d9bed38e854aa80eb86f14513c06a6bee67d7

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 is configured to load a remote resource. The extracted URL is the most critical IOC. The VBA project was present but contained no executable statements, suggesting the exploit is directly within the OLE structure rather than macro code.

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.

Filename	Kind	Source	Size
`macros.bas` `382fc1344a2f0cf6eda18645d41def8d571debc6637bc7fe02a5c83715a51bef`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2112 bytes

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