Office (OLE) malware analysis — malicious · b56d4a4219877e17

MALICIOUS

Office (OLE)

119.0 KB Created: 1999-12-06 11:49:00 Authoring application: Microsoft Word 8.0

MD5: cabb7acbc047cf28c814dfe138850df0 SHA-1: 198932bb8a4ec2e690ed60b160a994aed03c3df7 SHA-256: b56d4a4219877e1748a300640b8cb6a87838d1534015ef1380a372eda42a7702

260 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically AutoOpen and AutoClose, which are commonly used to execute malicious code upon opening or closing a document. The presence of an Equation Editor OLE object is a known indicator of exploits targeting Microsoft Office. ClamAV detections further confirm the malicious nature of the file, identifying it as Doc.Trojan.VMPCK1-16 and an extracted artifact as Doc.Trojan.Ozwer-1. The document body text appears to be benign statistical content, likely used as a lure.

Heuristics 6

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Contains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
ClamAV: Doc.Trojan.VMPCK1-16 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.VMPCK1-16
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.
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close 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` `89c9583ad035f4cf30746ffd03e9b191b090f0a77bf03fba56c3940673729d00`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	29055 bytes
Detection ClamAV: Doc.Trojan.Ozwer-1 Obfuscation or payload: unlikely

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