Office (OLE) / .XLS malware analysis — malicious · 4df0e1162c124f1d

MALICIOUS

Office (OLE) / .XLS

432.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-02-24

MD5: 90d7ecb275204818a772923b106f599e SHA-1: c10ef97f08e98c51ac8220e0d02b9f31e55d32cf SHA-256: 4df0e1162c124f1d748e2dc46c682df4b8024d3c4e92797f95ad99abe91548b6

70 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote document from the provided URL. The embedded URL is constructed to download a secondary payload. Although no VBA code was found to be executable, the exploit itself is sufficient to initiate a malicious chain.

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://qquuuq9werqwqqqq00qwewerSASWERWRWIERIWERIEWIR00R0WEQQ00000000000000WEDRDEDRREDDRDD0000000000WSDJHFJDSFJHJ@212.87.204.210/O0-O.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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