Office (OLE) / .XLS malware analysis — malicious · adf19fed5bdfe80f

MALICIOUS

Office (OLE) / .XLS

711.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: 4bb5a21106d460a7e9f63d44e47359cc SHA-1: bb87ff08d79ebb57f97f97407db083bb13bb580d SHA-256: adf19fed5bdfe80fc084a7ff1ad2ba59dc986dfe5b7dd7d2864c129bce51c0a0

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 to download a remote loader. The heuristic firing explicitly mentions the URL http://ilang.in/BrlcB, which is highly suspicious. Although the VBA project contains no executable statements, the OLE structure itself is leveraged for the exploit. The file is therefore acting as a dropper for a remote payload.

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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