Qbot — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 30a0ff44d90b8369…

MALICIOUS

Office (OLE) / .XLS

586.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 60289c400b03b8ffab7eae76f6bdb5dd SHA-1: a22045310169f5cb8e89d9c512485168ae5e21f2 SHA-256: 30a0ff44d90b83699fc7ec4e131f852d0e443e43b53cfc229dc55255d44fdef1
160 Risk Score

Malware Insights

Qbot · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is an Excel spreadsheet containing VBA macros, specifically an Auto_Open macro, which is a common delivery mechanism for Qbot. The script attempts to construct a URL for downloading a payload by concatenating strings, and it also defines paths for potential dropped files like '..\GiCelod.waGic'. The ClamAV detection explicitly names this as a Qbot variant, increasing confidence in the family attribution.

Heuristics 4

  • ClamAV: Xls.Downloader.Qbot-b760f03263b7c21b-9950248-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.Qbot-b760f03263b7c21b-9950248-0
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
496074bf956e6cb0b215a23b0cd41c5a3bbdfa3b480ff8e79c66739566451629		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6201 bytes

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