Office (OLE) / .XLS malware analysis — malicious · 5974510107671bab

MALICIOUS

Office (OLE) / .XLS

1.39 MB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 992dfdd9cb35fd4968e703a634f2d87d SHA-1: dd2b2e60f32e9b61b68dd8a6fc9cc0e7c19b8bb7 SHA-256: 5974510107671bab074afcca90928bc405552a27c8a1debec442fad448b589cc

188 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

This XLS file contains VBA macros, indicated by the OLE_VBA_MACROS heuristic. The macros utilize CreateObject and CallByName functions, suggesting dynamic execution. The SE_ENABLE_LURE heuristic confirms the document prompts the user to enable macros, a typical social engineering tactic. While no specific family is identified, the presence of macros and the lure strongly suggest a malicious downloader or dropper.

Heuristics 7

ClamAV: Xls.Malware.Exvk-9785252-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Exvk-9785252-0
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
CallByName call high OLE_VBA_CALLBYNAME

CallByName call
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `62ad0b6dd051e43985f4df0e703aa41b4a769b72d9ea141ab3d437fc063127a1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3777 bytes

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