Office (OLE) / .XLSX malware analysis — malicious · c53a58451545b9e4

MALICIOUS

Office (OLE) / .XLSX

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

MD5: d3255d35d3c987b6ba56d5f675c3fbfd SHA-1: 9e53f8b5f1d5047ed6fd67af580165e8893213cc SHA-256: c53a58451545b9e44926c672f4c9ba79707b485aba4524f1f76e6abd2dd2910c

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a macro-enabled Excel file that contains a Workbook_Open macro. This macro utilizes Wscript.Shell to execute commands, including the creation of a VBScript file and a batch file in the 'c:\programdata' directory. The script then attempts to download payloads from multiple URLs. The reconstructed URL string is "http://santoftoritilla.com/_baks/_TUx9/ ,http://donbahame.com/Home_files/YS0PAPxYeraes/,http://barnhart-studies.com/eln-images/Vggh1nbACeGF/ ,http://blute.com/3tech/jLu8IAnnj3gK9WC/,http://zenzebra.net/plath/9Q0DBle/,http://reacorp.net/PhotoGallery/UwRHgceSGbaCeGF/,http://miniflam.com/eln-images/fSwbQjUMAfGgdw/,http://marezedecor.com/MarezGallery/SEQxWtpMJ7A8rAtY0D/". This indicates a downloader functionality.

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.