Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 4112087ba6c14b73…

MALICIOUS

Office (OLE) / .XLS

299.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-01-27
MD5: 7c9395099af06ee9eef61ade2830ba8c SHA-1: 7c691fe0621bbbfa99c045fee904fdabec2e0d15 SHA-256: 4112087ba6c14b73eecad5a0551d079edf5ed939e924e301995e9029b25da3ea
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object. This technique is used to download and execute a remote payload from the specified URL. Although the VBA macro source is present, it contains no executable statements, suggesting the exploit is directly embedded within the OLE structure rather than initiated by macro code. The embedded URL is the primary indicator of compromise.

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.
  • 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.
  • 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://1234567890OOOOOOOOOOOOOOOOOOOOOOO@193.247.144.60/00000000000_OOOOOOO_ooooooo_ooOOOOOOO_OOOOO/OOOOOOOOOO_OOOOOOO_OOO.doc
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
ole10native_00.bin
0e74f03b42dbfb73650ae77db35efc03f254670fe5c220fbf54bacb45cb41486		 ole-package OLE Ole10Native stream: MBD0227C1F7/Ole10Native 50530 bytes

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