Emotet Office (OLE) / .XLSX malware analysis — malicious · 314c280e8e7914cd

MALICIOUS

Office (OLE) / .XLSX

138.0 KB Created: 2022-02-09 09:48:26 Authoring application: Microsoft Excel

MD5: 2563642aecc928360a6b62e21e0a7cf5 SHA-1: e4fbb526141c35b5dd5b7b4b803e3d7fb934118d SHA-256: 314c280e8e7914cd57a48498827be861274dea862928d7d387ea17dc5fcc63ae

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The file is a macro-enabled Excel document identified as malicious by ClamAV, specifically as 'Doc.Downloader.EmotetRed02220-9938909-0'. The Workbook_Open macro is configured to execute a script that downloads and executes a second-stage payload. The script attempts to create a VBS file at 'c:\programdata\oue4hjld.vbs' and a batch file at 'c:\programdata\bhnasleil.bat', and then executes the VBS file. The embedded script also contains URLs that are likely used for downloading the payload, including 'http://midnighsilverbirqrafters.com/store/wBjNOUw/B110N4cQA6R3/', 'http://temp.com/NAT_05_22_2009/BI710N4cQA6R3/', and 'https://redington.karmat.com/store/wBjNOUw/B110N4cQA6R3/'.

Heuristics 6

ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
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` `5fb92ad61e8b24658249cb62fbe0bc8548a400dec0ebf943ae58ab5176c1b391`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	52433 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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