Office (OLE) / .XLSX malware analysis — malicious · e8223735a1677945

MALICIOUS

Office (OLE) / .XLSX

118.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: 0ae17f61ab7d6672bfe4e3c0344377c4 SHA-1: 0304e95f74e904773a1d156f55b7696ce80cb5fd SHA-256: e8223735a167794521307a6e09876fb7b07c48d08ceef421244c2568c4d65984

120 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell

The presence of VBA macros and a high-confidence heuristic firing for ShellExecute API indicate that this XLSX file is designed to execute arbitrary code. The CreateObject call further suggests the potential for launching external processes or manipulating the system. Without further analysis of the macro content, the exact payload and delivery mechanism remain unclear, but the intent is to execute malicious code.

Heuristics 4

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `dab1c2ec39d6ea30a240d592eb8917b8885e5c05dd591052c3195f975bcf5e92`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1759 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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