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

Static analysis result for SHA-256 d0efc2078464f1c7…

MALICIOUS

Office (OLE) / .PPT

98.5 KB Created: 2021-01-13 23:12:53 Authoring application: Microsoft Office PowerPoint
MD5: f8156015a57a68afaa128c63291082d1 SHA-1: 481e0daa1c4801c5eea63f63190678dba6c45443 SHA-256: d0efc2078464f1c790b617058813bfd422902822500f939d89d58595e106284b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell

The file is a PowerPoint presentation containing VBA macros. Critical heuristics indicate the presence of a Shell() call within the VBA code, which is further obfuscated using character-shift decoding. The Auto_Close macro is triggered upon presentation closure, executing the decoded Shell command. This suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • VBA character-shift decoded Shell command critical OLE_VBA_ASC_CHR_SHIFT_SHELL
    VBA 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.
  • 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
  • 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://1230948%1230948%1230948%1230948%1230948@j.mp/ahjksdghaksdgajvcghafdags

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ed4cef77238939f1fa795bcb139f11780ed375eb35890a745a8024ebcffc44e7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17102 bytes

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