Office (OLE) / .PPT malware analysis — malicious · c8742d769b29773a

MALICIOUS

Office (OLE) / .PPT

65.5 KB Created: 2021-10-13 11:42:33 Authoring application: Microsoft Office PowerPoint

MD5: 3f752c8a381867dabe1974e910c5e0d0 SHA-1: 2c9f4c8e7c093a7e9d58c02fa9877f631c7d021f SHA-256: c8742d769b29773ad49ec4f4f86c68a8195e327ead54099a0ad6dfd85a7eb597

262 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a PowerPoint file containing a VBA macro with an Auto_Open subroutine. This subroutine uses CreateObject to instantiate Shell.Application and then calls ShellExecute, indicating an attempt to run an external process. The presence of the Auto_Open macro and the ShellExecute API call strongly suggest a malicious intent to download and execute a secondary payload. No specific family could be identified.

Heuristics 8

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Reference to mshta.exe high SC_STR_MSHTA

Reference to mshta.exe
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.
Suspicious extracted artifact high 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL https://www.bitly.com/ndhjklasjdklasd

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7185a6c1c2bca62fe9c3f4e453ed298a9775b58f83c8117cbfa4c769e0f70f57`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	928 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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