Office (OLE) / .PPT malware analysis — malicious · 85cf2cf2896ce8f8

MALICIOUS

Office (OLE) / .PPT

63.5 KB Created: 2021-04-05 23:08:55 Authoring application: Microsoft Office PowerPoint

MD5: 9769e79320d5e9ed253a9b3932277ce3 SHA-1: a7b78b5a61ef891a870cbda49648a072c9df2f48 SHA-256: 85cf2cf2896ce8f8bb0bd546b1f4a82c86b2ee662c12044d3a4fc018b2d4bb09

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The presence of VBA macros, specifically an Auto_Close macro and a GetObject call, indicates malicious intent. The Auto_Close macro is designed to execute automatically when the presentation is closed, and the GetObject call is often used to instantiate and run malicious objects. The ClamAV detection of Ppt.Malware.Valyria-10026465-0 further confirms its malicious nature. The macros are likely responsible for downloading and executing a second-stage payload.

Heuristics 5

ClamAV: Ppt.Malware.Valyria-10026465-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Ppt.Malware.Valyria-10026465-0
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
GetObject call high OLE_VBA_GETOBJ

GetObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
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` `fe25497212e27c1130cc49d7648a503bd1d2f824d0fe5bf5152814f0243d44c6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	931 bytes

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