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

Static analysis result for SHA-256 aa82a91ffbf5b0c6…

MALICIOUS

Office (OLE) / .XLSX

1.48 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 78e7923935618b9f3285b4b0ff1f861e SHA-1: ab88ffc22de715a8b2bd38959b06f0281a40d324 SHA-256: aa82a91ffbf5b0c6b365d5e69c918cd1bd9e9a0f791f33cd3de3117015fb28c9
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1059.001 PowerShell T1059.003 Windows Command Shell

The file exploits CVE-2017-0199, which is a known vulnerability for remote code execution. The heuristic firings indicate the use of OLE2Link and an OLE Package with an executable payload, pointing towards a downloader or dropper. The embedded URL, 'https://justneedbestsolutionsforbetterthingstohappnedalloverthewordwithme.busines@links.dansarindustries.com/AYZBqK', is likely used to fetch and execute a secondary malicious payload.

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.
    URL https://justneedbestsolutionsforbetterthingstohappnedalloverthewordwithme.busines@links.dansarindustries.com/AYZBqK
  • CVE-2014-4114 — OLE Package with executable payload critical CVE likely CVE_2014_4114
    OLE Package CLSID found alongside executable file references — a strong CVE-2014-4114/Sandworm-style package-dropper indicator.
  • 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.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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