Office (OLE) / .XLS malware analysis — malicious · 9b04c230094ecfcc

MALICIOUS

Office (OLE) / .XLS

451.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-09

MD5: e113221d1f5ebc19515a78854ad6109b SHA-1: bd26727eebe3dee8dec1fa831ba31dfb4c9a5055 SHA-256: 9b04c230094ecfccfd8e6b4bb9f46c9568d5af57b343916571f02459dd85f4c3

70 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object to download and execute a remote payload from the provided URL. The VBA project itself contains no executable statements, but the exploit mechanism is clearly indicated by the heuristic firing. The embedded URL is the primary indicator of compromise.

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.
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 http://yyyyyYYYYUUSUUUUUUU3243242UUU23U423U4UU2UWWWWW8W8W7W8WWWWWWW878W8W8WW78WWWW87W800000000000000000000@167.114.163.232/09....................09......................doc

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1206 bytes

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