Qbot — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 29ee4b979a09ad89…

MALICIOUS

Office (OLE) / .XLS

586.5 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: cfb3ffc1eb6eda1b3ea27e52daaeb8b6 SHA-1: 60bdd3fb1d317e2f8bc372abe260fd7d5dbce9d9 SHA-256: 29ee4b979a09ad89da43a027d894a6d5a59924700a176c15f963535697d68d47
160 Risk Score

Malware Insights

Qbot · confidence 95%

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

The file is an XLS document containing VBA macros, including Auto_Open and Auto_Close functions, which is a common delivery mechanism for Qbot. The macros construct strings to define a URL download function and specify file paths like '..\GiCelod.waGic', indicating the intent to download and save a second-stage payload. The ClamAV detection also explicitly names Qbot.

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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