Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 dbccb7ab26dcd548…

MALICIOUS

Office (OLE) / .XLS

203.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: c64ff860cbfe9249f699b94e041739c2 SHA-1: 982052a4d484c7566888c975e34e3969321e81f0 SHA-256: dbccb7ab26dcd5488c4642bc85362571440407e5d38b392d2f3018465accc5a5
282 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The presence of Workbook_Open and Auto_Open macros, along with a critical heuristic for URLDownloadToFile API, strongly indicates that this Excel file is designed to download and execute a malicious payload. The embedded URLs are the most likely sources for this payload. The ClamAV detection as 'Xls.Malware.Valyria-10029771-0' further supports the malicious nature of the file.

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://94.140.114.44/
    • http://103.155.92.211/
    • http://193.38.54.149/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6ea0dcbce704cc9662a989ee429fec0894ed516bccab67b859e6a519d0cedde3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3824 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 shell/COM execution token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.