Emotet Office (OLE) / .XLSX malware analysis — malicious · ddabae60fddc1b26

MALICIOUS

Office (OLE) / .XLSX

88.5 KB Created: 2022-02-14 05:58:53 Authoring application: Microsoft Excel First seen: 2022-02-22

MD5: 3aaf9a9923d08e18fad6891c6d74b9c6 SHA-1: 5f99735f8d28a761248c21e31b5257b09445a744 SHA-256: ddabae60fddc1b263d63c08925f366a08a769a5387cd98d8994e77e978a9a802

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

This XLSX file contains a Workbook_Open macro that executes a VBScript payload. The VBScript, in turn, uses PowerShell to download and execute a second-stage payload from multiple obfuscated URLs. The reconstructed PowerShell command is 'powershell -ExecutionPolicy Bypass -inc hidden -NoProfile -WindowStyle hidden -s PLuiwIt "bou"'. The VBScript also attempts to write a file to 'c:\programdata\bbiwjdf.vbs' and potentially execute it. The ClamAV detection and the nature of the script strongly indicate the Emotet family.

Heuristics 7

ClamAV: Doc.Downloader.Emotet02220-9940037-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet02220-9940037-0
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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 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` `98ce64e756a4ee3d4f776c1541f7f3ad0f966d786db88eda74f9a833f3a74b83`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	11705 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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