MALICIOUS
280
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1059.001 PowerShell
T1059.003 Windows Command Shell
The file is a malicious PowerPoint presentation containing VBA macros. Critical heuristics indicate the use of `Shell()` and character-shift decoding to execute commands. The `Auto_Close` macro is designed to run automatically when the presentation is closed. This suggests the macro is intended to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Doc.Malware.Valyria-10008087-0'. No specific IOCs like URLs or hashes were extracted from the provided evidence.
Heuristics 6
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Shell() call in VBA critical OLE_VBA_SHELLShell() call in VBA
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VBA character-shift decoded Shell command critical OLE_VBA_ASC_CHR_SHIFT_SHELLVBA auto-exec macro stores an encoded command string, decodes it with a Mid/Asc/Chr character-shift loop, and passes the recovered text to Shell. This is a high-confidence command stager.
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ClamAV: Doc.Malware.Valyria-10008087-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Valyria-10008087-0
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Auto_Close macro high OLE_VBA_AUTOCLOSEAuto_Close macro
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VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXECCompiled 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.
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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas122d98c9020d18f7b9c87f77d53d09df0f29ea102d949411f6f2457bf565c11a |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 4444 bytes |
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