Malicious Office (OLE) / .PPT — malware analysis report

Static analysis result for SHA-256 ef3407f2f4e4d25f…

MALICIOUS

Office (OLE) / .PPT

59.0 KB Created: 2020-04-19 19:05:51 Authoring application: Microsoft Office PowerPoint
MD5: e5c316cd0f8be4485f52ec3498ebf6d1 SHA-1: 9facfdaa9b4d7abb60463fb94538eec42dd580a1 SHA-256: ef3407f2f4e4d25f8072eaa0f766bcf8a0d2ded7a517161eb9b8db8c2bbd5882
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The sample is a PowerPoint file containing VBA macros. A critical heuristic firing indicates the use of the Shell() function within a VBA macro, specifically within an Auto_Close routine. This suggests the macro is designed to execute a secondary payload when the presentation is closed. The ClamAV detection further confirms its malicious nature. No document body text was available for analysis, but the presence of the Shell() call strongly implies the execution of arbitrary code.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Ppt.Trojan.Agent-7687595-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Ppt.Trojan.Agent-7687595-0
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • 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.

FilenameKindSourceSize
macros.bas
630550283f53fca0f62fec95f3bd20ebaabba67077c274e9fefac47033836aee
vba-macro oletools.olevba.extract_macros (decoded VBA source) 479 bytes