Emotet Office (OLE) / .XLSX malware analysis — malicious · 1a48653f0d220589

MALICIOUS

Office (OLE) / .XLSX

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

MD5: fbc76007733215c04ea9074a4b888e09 SHA-1: 9c2ad9e4b766c0f277810604ff5b2035b8bccfb5 SHA-256: 1a48653f0d2205896b3f90b484e339522bed6daccf6ad72bc52772a81187ac15

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample contains a Workbook_Open macro that executes a VBScript payload. The VBScript payload, reconstructed from the concatenated string, contains multiple URLs that are likely used to download and execute a second-stage payload. The presence of Wscript.Shell and CreateObject calls, along with the ClamAV detection for Emotet, strongly indicates a downloader functionality. The reconstructed URL is "http://youlandanda.org/eln-image/n8DPZISf/", "http://roseveideo.net/eln-images/EjdcOMlY8Gy/", "http://vbaint.com/eln-images/H2pPGte8XzENc/", "https://framemaker.us/eln-images/U5W2IGe9m8i9hr/", "http://niplaw.com/asoliodfounada", "http://robertflolod.us/eln-images/DGI2YOkwSc9XPO/", "http://mpmcomputing.com/fonts/JO5/", "http://robertflolod.us/eln-images/DG2YOkwSc9XPO/".

Heuristics 7

ClamAV: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0
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` `faf50200d5a9adeeda00cc1da1bbf8f6abf0317a1e97a58db8ae804ba12ba446`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	13985 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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