Office (OLE) / .PPT malware analysis — malicious · 7b0fe4be193ac9b7

MALICIOUS

Office (OLE) / .PPT

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

MD5: f5f65078d3c1ef2872e9ffd2de21853b SHA-1: e8b3cdaf1d8cfa45853818ff6e242ba89015c1ff SHA-256: 7b0fe4be193ac9b74556bed23fc7640bd499ebca996b64daa131c4d8490263e5

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The sample is a PowerPoint file with a critical ClamAV detection for Ppt.Malware.Valyria-10026465-0. High-severity heuristics indicate the presence of VBA macros, specifically an Auto_Close macro that utilizes GetObject for execution. This suggests the macro is designed to run automatically when the presentation is closed, likely to download and execute a second-stage payload. The presence of VBA macros and the Auto_Close execution pattern are strong indicators of a malicious document.

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` `4dc8146829106a2e92319a5338f938c7ce588ca5e269f8eb0b99b8687681e76f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	930 bytes

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