Office (OLE) / .XLSX malware analysis — malicious · e1f53e458a691c7e

MALICIOUS

Office (OLE) / .XLSX

217.5 KB Created: 2006-02-11 04:23:49 Authoring application: Microsoft Excel

MD5: 8648d292f8d55ca79540986f51202e4c SHA-1: 165963ab415c3e3895c1faae2f6135a923dc4d8e SHA-256: e1f53e458a691c7ec7bd803cc0249914b8541a3be65eacaf8e81f54ea6906fb5

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, including Workbook_Open and Auto_Open, which are commonly used to automatically execute malicious code upon opening the document. The heuristic 'SC_STR_SHELLEXEC' indicates the use of the ShellExecute API, suggesting the macro attempts to run external commands or download additional payloads. The presence of these elements strongly points to a macro-based attack designed to compromise the user's system.

Heuristics 6

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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` `860de4fc29328ee93cb4209908744214534f1430859fc7ce11217e6b6954928f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	40782 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

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