Emotet Office (OLE) / .XLSX malware analysis — malicious · 9e0ca94aae6766ff

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 7006bc740f24470259d410f198b60a91 SHA-1: f9ca98e631a894d46941d5168aa0a5ec3c92f16c SHA-256: 9e0ca94aae6766ff57628ec7326f5572fc4beacee9ceced6af47c48b0c6ff6e6

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1059.005 Visual Basic

The sample contains a Workbook_Open VBA macro that utilizes Wscript.Shell to execute commands. The macro constructs and runs two commands: first, it executes 'c:\programdata\yhjlswle.vbs' and 'c:\programdata\ughldskbhn.bat', and second, it executes 'c:\programdata\ughldskbhn.bat' with arguments that appear to be obfuscated URLs. This behavior is characteristic of Emotet, which often uses macro-enabled documents to download and execute further stages of malware. The ClamAV detection also strongly suggests Emotet.

Heuristics 7

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

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
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` `7a075e02dc1e88807280b9b84946715e79a3c091d50391301434649c77b78ea1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	12808 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.