Office (OLE) malware analysis — malicious · 575cec8019b8f8dc

MALICIOUS

Office (OLE)

295.5 KB Created: 2010-01-02 03:27:02 Authoring application: Microsoft Excel

MD5: b7cfbd6b37ee1168662415703abb0fa2 SHA-1: 8dd56eef7c113a14db1c46ec810b456518db7cc3 SHA-256: 575cec8019b8f8dc4aab5581c48850d416b4f6a661cd06d62d1392e77a0ee31b

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment

The file is an Excel document containing an Auto_Open VBA macro, which is a common technique for executing malicious code upon opening. The ClamAV heuristic firings, 'Ppt.Malware.Laroux-10036124-0' and 'Xls.Trojan.Escape-1', strongly indicate malicious intent. The document body presents what appears to be inventory or financial data, likely intended to trick the user into enabling macros.

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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