Emotet Office (OLE) / .XLSX malware analysis — malicious · a0c87394bafee9e5

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 6f68e72a160241e6c002555b3de0d88c SHA-1: 710baecd56a2bae5e6b981f706ed463fb73baa9f SHA-256: a0c87394bafee9e582492b268efef92069b3ca24da2bbad23b9a678a5fa0e650

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample is a macro-enabled Excel file that triggers a Workbook_Open event. This event executes VBA code which uses Wscript.Shell to run a VBScript located at 'c:\programdata\yhjlswle.vbs' and a batch file at 'c:\programdata\ughldskbhn.bat'. The VBA code also attempts to download additional content from multiple URLs, including 'https://fullness-safety.com/-/P6x/'. The presence of Wscript.Shell, the execution of external scripts, and the download URLs strongly indicate a downloader or initial access stage for a malware family like 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.

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