Office (OLE) / .XLS malware analysis — malicious · e76e7bf082b25688

MALICIOUS

Office (OLE) / .XLS

372.5 KB Created: 2005-07-12 18:22:50 Authoring application: Microsoft Excel

MD5: 553dfdb8285318f8c439a7bc2d3c9052 SHA-1: 8f139dc9f1c855bc7cb31db09dde7786901c8564 SHA-256: e76e7bf082b256880544b5d8fa86469e111199e6462f74b8347097ec711425a6

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic

The file is an Excel spreadsheet containing VBA macros, with a high-confidence Workbook_Open heuristic firing. The macros are obfuscated, and a file named 'macros.bas' was extracted. The document body contains what appears to be a form for job data or service orders, which could be a lure. The primary malicious activity is the execution of the obfuscated VBA code via the Workbook_Open event.

Heuristics 4

Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
Suspicious extracted artifact high 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
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://fki-dokumente.telekom.de/n2va0097/09/n2va0097.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `a088b846a549c3e8d242f9ed0bf7fedb401a394cfbc508980f8bc84e81e87337`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	32016 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 109 Chr/ChrW string-construction calls.

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