Office (OLE) / .XLS malware analysis — malicious · fdf9fbffc3dc9825

MALICIOUS

Office (OLE) / .XLS

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

MD5: d5d1a547402dabb68d73e0669c269792 SHA-1: b61e79ed19d2f7480f63868315ae6fc5b0252b0a SHA-256: fdf9fbffc3dc98257534ef6a5a7eb9b448d9e539ebb7e662f62ee06c40a55e51

282 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The file is a macro-enabled Excel spreadsheet containing Workbook_Open and Auto_Open macros, indicating it's designed to execute code upon opening. The presence of the SC_STR_URLDOWNLOAD heuristic and embedded URLs strongly suggests the macro attempts to download and execute a secondary payload from one of the listed IP addresses. The ClamAV detection as 'Xls.Malware.Valyria-10029771-0' further supports its malicious nature.

Heuristics 8

Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD

Reference to URLDownloadToFile API
ClamAV: Xls.Malware.Valyria-10029771-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Malware.Valyria-10029771-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
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
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.
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://94.140.112.119/
- http://190.14.37.232/
- http://45.153.241.58/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `f7c44edd92c912b12cf78543de6c50fb587a545950b296cb99a4a89b00c02672`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3917 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 shell/COM execution token(s).

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