Emotet Office (OLE) / .XLSX malware analysis — malicious · dcc9c68d02b68022

MALICIOUS

Office (OLE) / .XLSX

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

MD5: d6d8b1b2ac977e083950e9e4bb2e9104 SHA-1: 3c96e63b151d2a37bd63eb5fdc82e6d934bc0893 SHA-256: dcc9c68d02b68022af3eab30f6886129e4d9be792aad72da93b2f0adbeac493b

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample is identified as malicious by ClamAV with the signature 'Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0', strongly suggesting the Emotet family. The Workbook_Open macro is configured to execute a series of message boxes, likely as a lure. The embedded VBA script contains obfuscated PowerShell commands that reconstruct a list of URLs and attempt to download and execute a second-stage payload. Specifically, the script reconstructs the following URLs: 'http://youlandada.org/eln-image/n8DPZISf/', 'http://roservideob.net/eln-images/EjdcOMlY8Gy/', 'http://vbaint.com/eln-images/H2pPgtE8XzENc/', 'https://framemakers.us/eln-images/U5W2IGE9m8i9hr/', 'http://niplaw.com/asolidfounation/JO5/', 'http://roberflod.us/eln-images/DGI2YOkw9XPO/', 'http://mpmcomputing.com/fonts/JO5/'. It also references temporary file paths like 'c:\programdata\tjspowj.vbs' and 'c:\programdata\uidpjewl.bat', indicating a downloader functionality.

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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