Office (OLE) / .XLSX malware analysis — malicious · 8a09df8f8d86eb0e

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 107ca85e92648262e8a64a0a00007fd7 SHA-1: 9a027d0d82c3e216a921b7d1d1b51a34eacc0200 SHA-256: 8a09df8f8d86eb0e09105d0a9dac2cc76b03c1bacb3d9ca4930598bd567400ad

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Excel file containing VBA macros. The Workbook_Open macro is configured to execute, and it utilizes `CreateObject` to instantiate `Wscript.Shell` and `Scripting.FileSystemObject`. The script then attempts to execute a batch file located at `c:\programdata\jledshf.bat` and a VBScript at `c:\programdata\sduoixo.vbs`. The VBScript appears to be a downloader, reconstructing a complex URL string from concatenated parts: `http://goyaluaa.vmeshaa.in/0v6kcnky/CG/`, `https://mars.srl/wp-admin/7Ffk6LN2Xs2W/`, `http://franmuler.es/mbx/8c5RBGjx6/`, `http://varavoood.com/Ajax/cnnM91G/`, `https://7jcaat.com/wp-content/t/7.c`, and `http://blog.centralhome.com/mby/8c5RBGjx6/`. This indicates the primary intent is to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Valyria-10004384-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-10004384-0
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` `527d0656a0c2c323955d068683ef8f7e20c035cda247a1e24383595c0eb3403b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7821 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.