Xls.Downloader.Valyria-10008445-0 Office (OLE) / .XLS malware analysis — malicious · 63e7d413f4653c4b

MALICIOUS

Office (OLE) / .XLS

100.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-09-14

MD5: 968a96fab78010b987e7a0b8624d2605 SHA-1: 1e42b6186f040b9868a978450fde05e39a267bf3 SHA-256: 63e7d413f4653c4b84c8e4c1c4fd4516a245464b3e996aa733ce21c9c1c964b1

240 Risk Score

Malware Insights

Xls.Downloader.Valyria-10008445-0 · confidence 95%

MITRE ATT&CK

T1059.005 Service Execution: Visual Basic T1059.003 Command and Scripting Interpreter: Windows Command Shell T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics indicate this XLS file contains malicious VBA macros. The Workbook_Open macro is designed to execute a command that downloads a payload from 'https://transfim.sh/gim/gj04sqKk7O/boat.xim' and saves it as 'C:\Users\Public\iq5kz.exe', which is then executed. This indicates a downloader functionality.

Heuristics 6

ClamAV: Xls.Downloader.Valyria-10008445-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.Valyria-10008445-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
GetObject call high OLE_VBA_GETOBJ

GetObject call
cmd.exe reference in VBA high OLE_VBA_CMD

cmd.exe reference in VBA
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.
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` `97637e58c430551430f9ae519a2f8c97ff1d6cb377c6777516225934c491817b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1212 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.