Office (OLE) / .XLS malware analysis — malicious · ca952b470c233993

MALICIOUS

Office (OLE) / .XLS

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

MD5: a7104f31adb5de04583118d9d55b3590 SHA-1: 60216fe536d1d3fd441158234dc184add93a6682 SHA-256: ca952b470c2339936cea20192fe9aee896123b3c1cb4ad851866decde8bb8b83

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE file that exploits CVE-2017-0199 via a URL Moniker. This technique is used to download and execute a remote loader from the URL 'https://arnogo.net/oHfJlN?&oasis=sharp&total=purring&lily=grubby&gaffer=yummy&metro'. Although VBA macros were present, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure.

Heuristics 2

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.

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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