Emotet Office (OLE) / .XLS malware analysis — malicious · a8d2f2e7213952b7

MALICIOUS

Office (OLE) / .XLS

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

MD5: 57a257fac9627354ec9984974a21f5d9 SHA-1: 518a066e75ea12dc5d8d0d6784d3a68ece02c8cc SHA-256: a8d2f2e7213952b7c8d7772b4cda6ffc7e3d7ca0a4c424f5c698f9d499e32b88

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 critical ClamAV detection and high-severity heuristics for VBA macros, Workbook_Open execution, and CreateObject calls indicate a malicious macro-enabled document. The DOC BODY and SCRIPTS sections reveal that the macro attempts to create and execute a batch file named 'jledshf.bat' located in 'c:\programdata\'. This batch script, in turn, is designed to download and execute a second-stage payload from a list of hardcoded URLs. The reconstructed command line for the batch script is 'c:\programdata\jledshf.bat', and the script itself contains obfuscated PowerShell commands to download from multiple URLs.

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` `006c4f4d54d1c9bb906763adb0bd849cdbbe9d88f3fa78ad2d18ef6987f96c37`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8906 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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