Office (OLE) / .XLS malware analysis — malicious · 584cf2511d55395d

MALICIOUS

Office (OLE) / .XLS

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

MD5: e8dae66bcb983819937e41bc2d0409b2 SHA-1: 971c71b22d76e2439d23a36b5142d54fe00e19e6 SHA-256: 584cf2511d55395d39eca797422c2048a67fa126a4e0e832ec705b0384d7a044

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File Execution T1204.002 Malicious File Execution: Malicious File T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the URL http://tgt.ng/3TVkaP. Although VBA macros were present, they contained no executable statements, suggesting the primary malicious functionality relies on the OLE vulnerability.

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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