Office (OLE) / .XLS malware analysis — malicious · 58ba041b2212d442

MALICIOUS

Office (OLE) / .XLS

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

MD5: bf096337a28c8cc2a32a3d9de4fceab8 SHA-1: 0516ca0d7b9138a68a7842c7a8e0bce65ae5e7f9 SHA-256: 58ba041b2212d442a276cf0b584fc51f362b725d84ef0a9d45be1bba75c75ef0

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the specified URL. Although VBA macros were present, they contained no executable statements, suggesting the primary malicious functionality relies on the OLE vulnerability. The sample is classified as malicious due to this exploit.

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.

URL https://al4.dev/gPUBou
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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