Office (OLE) malware analysis — malicious · ec53cb03775a2b82

MALICIOUS

Office (OLE)

79.0 KB Created: 2009-08-27 21:54:00 Authoring application: Microsoft Word 11.5.5

MD5: 168048d2b7e1da5943a30681b86729d6 SHA-1: 4534253ce483ca5788bf07f8c130677283700b62 SHA-256: ec53cb03775a2b8208c44799349e85bd1409f136f4ab678ae243401b21a0ff7a

180 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Doc.Trojan.Thus-10'. It contains VBA macros, specifically a 'Document_Open' macro, which is a common technique for executing malicious code upon opening the document. The document body discusses a school band program, a common lure to trick users into enabling macros. The primary intent appears to be the execution of a second-stage payload via the detected macros.

Heuristics 4

ClamAV: Doc.Trojan.Thus-10 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Thus-10
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.
Document_Open macro high OLE_VBA_DOCOPEN

Document_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` `92d0fa20925437be855228570a2aee5857b549baa6f864914dbb8b0b4fb228f1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2270 bytes
Detection ClamAV: Doc.Trojan.Thus-10 Obfuscation or payload: unlikely

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