Office (OLE) / .PPT malware analysis — malicious · 06870463d9a00b05

MALICIOUS

Office (OLE) / .PPT

248.5 KB Created: 2022-09-08 03:05:31 Authoring application: Microsoft Office PowerPoint

MD5: 3cd6fc1309294e4eb4bfb2e861e2f570 SHA-1: 706cedeba3d7b1e7eddb7462e90a5a51238679fa SHA-256: 06870463d9a00b05839e7e8de379702aefccc47cf48b0b511c76da2cb8c13e50

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The PowerPoint file contains an Auto_Open VBA macro that is heavily obfuscated. This macro attempts to delete several files and then proceeds to download and execute a second-stage payload. The script uses `CreateObject` and `Environ()` calls, indicating a dynamic execution flow. The specific payload and its ultimate destination are not fully discernible due to the obfuscation, but the intent is clearly to download and run additional malicious content.

Heuristics 7

Obfuscated auto-exec VBA loader critical OLE_VBA_OBFUSCATED_AUTOEXEC_LOADER

Auto-exec VBA reconstructs strings with a heavy custom decoder (numeric char-array, repeated hex-string decode, or junk-token Replace removal) and feeds them to a COM-instantiation or execution sink. This obfuscated-loader shape keeps CreateObject/Shell/URL indicators out of the macro source.
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject 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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `3629c5cfec9a4e938bcb3c21cc4ce6e54da5cccaf703fde9bc532b375093d56d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	54956 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 long base64-like blob(s).

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