Emotet Office (OLE) / .XLSX malware analysis — malicious · 451a133ca2ed10da

MALICIOUS

Office (OLE) / .XLSX

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

MD5: e1826e86cb76ce51fe331ba29c9a4913 SHA-1: aea6754ab8fb8bc5324d38f09b3f9f0ac737720e SHA-256: 451a133ca2ed10da3aac772eea2a5d34f3ff92cd9997644e1c1f70bdd00ac42d

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 T1059.005 Visual Basic

The file contains VBA macros that trigger on workbook open, indicative of Emotet. The script reconstructs and executes a batch command to download a second-stage payload from multiple URLs. Specifically, it reconstructs the command 'c:\programdata\jledshf.bat' and uses 'wscript.shell' to execute it. The script also attempts to download from the following URLs: 'http://aixyana.com/wp-admin/6pY001tdOxY10/tDoxY10', 'https://ncikjeja.com/bacc/lOo46UEiVnam/', 'https://mail.themintonlist.com/wp-incluedes/S5xbjWOwM75ysw9xAM/', 'https://karaah.com/kvxqec/L8mXqIKjN95uoFQdPS/', and 'https://mail.terinhumprey.com/wp-incluedes/S5xbjWOwM75ysw9xAM/'.

Heuristics 7

ClamAV: Doc.Downloader.EmotetExcel02226-9938630-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
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` `c49f2df77c50e10269216d97c3efdf7c32f9f18ba5d8fd42a9b144f48e100040`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5709 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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