Office (OLE) / .XLS malware analysis — malicious · 558874e62f4fdf61

MALICIOUS

Office (OLE) / .XLS

28.5 KB Created: 2009-09-11 05:03:12 Authoring application: Microsoft Excel

MD5: 5ba19ca37cbff572176f9125a9c82ec1 SHA-1: 2ddb2f40763ca1627fe79be24b0f4813ee1ff4ac SHA-256: 558874e62f4fdf61cc9201c70687e874e31abd1f0976eb76e37c173929f37740

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1059.001 PowerShell

The file is an Excel spreadsheet 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 presence of the 'macros.bas' file suggests the macro is intended to download and execute a secondary payload, a typical behavior for this type of threat.

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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