Qbot Office (OLE) / .XLS malware analysis — malicious · 2c7d82201778e1cd

MALICIOUS

Office (OLE) / .XLS

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

MD5: 363c1f06027468765fc550735bd2e280 SHA-1: e08d7d33f6bd3e6fb902b7b53a0f25bf9842d283 SHA-256: 2c7d82201778e1cda42a6eae6535a60dd0b0659d4d6b532ad599a71ccd65b4b7

160 Risk Score

Malware Insights

Qbot · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS and OLE_VBA_AUTO indicate a malicious Excel file. The VBA script contains obfuscated strings that reconstruct to the command 'regsvr32 -silent .\celod.wac', suggesting the script's intent is to download and execute a second-stage payload using regsvr32. The presence of Auto_Open and Auto_Close macros further supports the malicious nature of the document.

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.

Filename	Kind	Source	Size
`macros.bas` `82e1e47d5ead737b15bb2148da65cf727043b2c8a73a6e4133c451f98570a39a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3700 bytes

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