Emotet Office (OLE) / .XLSX malware analysis — malicious · df3639ec77d08a2a

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 8ac790d9941196a3387ca5edfca48332 SHA-1: 3744e98109f39e21eccbca8e9ea67c9294fb389b SHA-256: df3639ec77d08a2a5a2b02d48bd4ee4662ff771a27593a4ab3d8895e601f8240

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.EmotetExcel02222-9938901-0'. The VBA macros within the document are designed to execute Windows commands. Specifically, the script constructs and executes a batch file located at 'c:\programdata\jledshf.bat'. The script also attempts to download a payload using a reconstructed URL: 'http://store.uxdummmit.com/wp-admin/VfgBSRQA7Z/ ,http://glorenental.com/wp-admin/f1ezEAJGTnS6I/,http://candise.biminteractive.org/1g94ngo/2n7lJoPuPDaenPcX/,http://bacchilelatoroporicolo.org/1g94ngo/2n7lJoPuPDaenPcX/'. This behavior is consistent with Emotet's typical download and execution of further malicious stages.

Heuristics 7

ClamAV: Doc.Downloader.EmotetExcel02222-9938901-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02222-9938901-0
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` `df1eb14c222394595c0518b49eec2b55ed9573146c5f1717dedceddd2e199a2b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	12041 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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