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

Static analysis result for SHA-256 b2cb7e87e12aefb9…

MALICIOUS

Office (OLE) / .XLS

53.5 KB Created: 2010-01-20 16:15:22 Authoring application: Microsoft Excel
MD5: 52332ebfdd5c87422c2fae29968959d2 SHA-1: d9550bc66f5e01511d297572d3e02a8c965ba371 SHA-256: b2cb7e87e12aefb95c24263dfd354dfdafbf0c3aea6678edff2c3dd70d697e49
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is an XLS document containing VBA macros, specifically an Auto_Open macro, which is a common technique for initial execution. ClamAV identifies this as Xls.Trojan.Laroux-28. While the document body text is present, it does not provide clear context for a malicious lure. The Auto_Open macro is the primary indicator of malicious intent, likely designed to download and execute a second-stage payload.

Heuristics 5

  • ClamAV: Xls.Trojan.Laroux-28 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-28
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open 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://www.apple.com/DTDs/PropertyList-1.0.dtd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d7bf2f91b353bf5927efeaa76fe4f5c61a829bc6c713bdb600e6d42600339b8f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 2334 bytes
Detection
ClamAV: Xls.Trojan.Laroux-28
Obfuscation or payload: unlikely

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