Office (OLE) malware analysis — malicious · ea2ac2c3778c6b27

MALICIOUS

Office (OLE)

22.5 KB Created: 2010-04-20 09:59:41 Authoring application: Microsoft Excel

MD5: 39343750fc68d5b5a56382b79a76d192 SHA-1: c3dde437489cfca005dd7d7c07aa694abb37fd78 SHA-256: ea2ac2c3778c6b27a240a658aa61dbb4358ea30b92d2af4a538ec0e7b095b977

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

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 the document. The ClamAV detections (Xls.Trojan.Escape-2 and Xls.Trojan.Escape-1) further confirm its malicious nature. The document body presents a fabricated inventory or order form, likely intended to trick the user into enabling macros. No specific IOCs like URLs or hashes were extracted from the provided evidence.

Heuristics 4

ClamAV: Xls.Trojan.Escape-2 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Trojan.Escape-2
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` `b1dc6e799f600e1fe03c12ee5c927d9c20e72385747b65f9e697c96da1cbf849`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1767 bytes
Detection ClamAV: Xls.Trojan.Escape-1 Obfuscation or payload: unlikely

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