Qbot Office (OLE) / .XLS malware analysis — malicious · 9c96e207846978fc

MALICIOUS

Office (OLE) / .XLS

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

MD5: 364ecd7cd2cb5796ad4b6fe9a3e41025 SHA-1: 52485455955bb0b80eaab8175b5c4300725d7259 SHA-256: 9c96e207846978fc126b90acd076e2df547d7782faf43724b04165a28be4a483

140 Risk Score

Malware Insights

Qbot · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The file is a Microsoft Excel spreadsheet containing VBA macros, specifically an Auto_Open macro, which is a common delivery mechanism for malware. The ClamAV detection explicitly identifies it as 'Xls.Downloader.Qbot-b760f03263b7c21b-9950248-0', strongly suggesting the Qbot family. The Auto_Open macro is designed to execute automatically when the document is opened, likely to download and run a second-stage payload. The presence of the 'macros.bas' artifact further supports the macro-based execution.

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
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `44ce8de16df26234abe008370d6052886255e8593ab511fcea07f165f11d76f7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6348 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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