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

Static analysis result for SHA-256 32d5a1671e363f16…

MALICIOUS

Office (OLE) / .PPT

66.5 KB Created: 2021-09-05 21:27:56 Authoring application: Microsoft Office PowerPoint
MD5: feb65381c0200092f9eba79362c036c4 SHA-1: bd41e3411107fba6e2c6bd6ed415d2a9c57c5e40 SHA-256: 32d5a1671e363f16fbd8373ef7d60886e2b5d98289d7943990e6381af171f1c4
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The Auto_close VBA macro within the PowerPoint file utilizes CreateObject to instantiate Shell.Application and then calls ShellExecute. The script reconstructs the command 'mshta' and a URL 'https://www.bitly.com/qwhyejbashdtydeqbdsa' to download and execute a second-stage payload. This indicates a macro-based delivery mechanism for a downloader.

Heuristics 6

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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
  • Suspicious extracted artifact medium 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.

FilenameKindSourceSize
macros.bas
0417e7795e3619efecf7c9bcc0d418cb44f262bb63059b39f385c416a9bc3951		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1511 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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