Office (OLE) / .XLS malware analysis — malicious · 60951d95845a786b

MALICIOUS

Office (OLE) / .XLS

35.5 KB Created: 2010-05-20 11:42:55 Authoring application: Microsoft Excel

MD5: 6e0f40b602a25833be4b742ed70fc077 SHA-1: 8dd709b85f3b29eed633ce528925b983c7707961 SHA-256: 60951d95845a786be4b61293f7696400e94ad8d048ed22ab2670b9383832958c

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

This XLS file contains VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening. The script attempts to copy itself to the Startup folder as 'StartUp.xls' to establish persistence. The ClamAV detections (Ppt.Malware.Laroux-10036124-0 and Xls.Trojan.Escape-1) further indicate malicious intent, though the exact payload is not clear from the provided script.

Heuristics 4

ClamAV: Ppt.Malware.Laroux-10036124-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Ppt.Malware.Laroux-10036124-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
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` `867f33b96943bbf9af8322b042228c20f1c738891f13586281fda186d6903141`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2056 bytes
Detection ClamAV: Xls.Trojan.Escape-1 Obfuscation or payload: unlikely

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