Office (OLE) / .XLS malware analysis — malicious · 286c02020c558b67

MALICIOUS

Office (OLE) / .XLS

130.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2021-10-11

MD5: ceef61fdebc46b6ced4f36b910f2f071 SHA-1: 16e85083a0a5a92b0b197921d15752aaa18bcaf2 SHA-256: 286c02020c558b6790d19d456772d942968e94140fc905f62a746bda5719f9e0

222 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is an Excel spreadsheet containing VBA macros, including an Auto_Open macro, which is a common technique for executing malicious code upon opening. The heuristic SC_STR_URLDOWNLOAD indicates the use of an API to download content from a URL. The embedded URLs are likely used to fetch and execute a secondary payload. The ClamAV detection name 'Doc.Downloader' further supports this analysis.

Heuristics 6

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
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://194.36.191.21/
- http://185.123.53.199/
- http://101.99.90.118/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `b294c99771232754d3682952889ea53d99cd1a8ec20dceb6eccda568c7ece2b5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	4802 bytes

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