Office (OLE) / .XLSX malware analysis — malicious · ca58f6e51e8aeaa7

MALICIOUS

Office (OLE) / .XLSX

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

MD5: edc786e7f7017245325de82987b044bb SHA-1: 76a5749331ab48f0e0be941e7554334f2e6fda43 SHA-256: ca58f6e51e8aeaa757bbc75f6d78f872d61a1024b272833898ddd25b5d48bee4

88 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing for CVE-2017-0199 indicates that the OLE document is designed to exploit this vulnerability. The embedded URL, 'https://bestthingswithbetterperofrmnacewithgreatprojectwhichcanmanageeveringwith.business@link.scogo.in/dq0Eet', is likely used to download and execute a second-stage payload. Although VBA macros were detected, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure.

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.
NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED

Long run of 0x61 bytes
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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