Office (OLE) / .XLS malware analysis — malicious · 1d0fde697134d7ed

MALICIOUS

Office (OLE) / .XLS

29.0 KB Created: 2008-04-28 07:42:27

MD5: a9d5a1158198a0c3c9d0615309c27d00 SHA-1: d90a903333217e58f822c70f7193502cd2590e65 SHA-256: 1d0fde697134d7ed9be29472f514f5ee39c2b689007534f6f209073b39efbc1b

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.002 Spearphishing Attachment

The file is an XLS document containing VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code upon opening. ClamAV detections indicate it is a known malware variant. The document body presents a fabricated business-related spreadsheet to trick the user into enabling macros, which then likely downloads and executes a second-stage payload.

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` `fb2929454da53a7c274256eb0b38ca9476f9f1c61d52f3b7e15bf6ac20b85c3e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2073 bytes
Detection ClamAV: Xls.Trojan.Escape-1 Obfuscation or payload: unlikely

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