Dridex Office (OOXML) / .XLSM malware analysis — malicious · ca20e6d6fc14a5a1

MALICIOUS

Office (OOXML) / .XLSM

409.9 KB Created: 2020-11-06 03:54:16 UTC Authoring application: Microsoft Excel 16.0300

MD5: f9631af188613c35817eef9aec6fb587 SHA-1: c272da492857144f88502ccfe20650e3667d01c7 SHA-256: ca20e6d6fc14a5a1b07747c95d04fa6fa593fbeda1be5b0eb84495d60fc59e01

220 Risk Score

Malware Insights

Dridex · confidence 95%

MITRE ATT&CK

T1059 Command and Scripting Interpreter T1059.005 Visual Basic

The file is a macro-enabled Excel spreadsheet (XLSM) containing a Workbook_Open macro that utilizes the Shell() function. This indicates the document is designed to automatically execute a payload upon opening. ClamAV detection confirms it as a Dridex downloader variant, suggesting its purpose is to fetch and run additional malicious code.

Heuristics 5

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Xls.Downloader.DridexGreen09213-9890103-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.DridexGreen09213-9890103-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
Suspicious extracted artifact high 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.
VBA project inside OOXML medium OOXML_VBA

Document contains vbaProject.bin — VBA macros present

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `522c74be4d14a27698d0a701f7058f7dfdbe678ed40b8a79889555ad531c1f49`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	2010 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `3d31ac8734cea5a870b84f6f7f1f6925f8c169f3b7517027fe13493ef56cd168`	vba-project	OOXML VBA project: xl/vbaProject.bin	14336 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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