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

Static analysis result for SHA-256 8c821a1d233f146e…

MALICIOUS

Office (OLE) / .PPT

68.0 KB Created: 2021-06-23 21:14:32 Authoring application: Microsoft Office PowerPoint
MD5: 7f2ccdcabb614eba8916b118d589f911 SHA-1: 7b7625ff46cc4ca7edb9e90139758b14dd61d155 SHA-256: 8c821a1d233f146eda64c39749f4a976bd1f76a35309e97e78645ad7a788301f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter T1566.001 Phishing

The file exhibits several characteristics of macro-based malware. The VBA macros, particularly the `Shell()` call and the `Auto_Close` macro, are commonly used to execute arbitrary code. The embedded URL and obfuscated string manipulation suggest an attempt to download and execute a payload. The `mindblowing` function, combined with the `dlvfbif` function which executes the shell command, indicates a download and execution sequence. The use of URL encoding further obfuscates the intended destination.

Heuristics 4

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • 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
a944293925a2e2cec35690d682faf0535295aae080c4ef3deb13fbaae88ffa92		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 822 bytes

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