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

Static analysis result for SHA-256 fbd1eaa637bf9ec6…

MALICIOUS

Office (OLE) / .PPT

113.5 KB Created: 2006-08-16 00:00:00 Authoring application: Microsoft Office PowerPoint
MD5: 6201df5c78c9638cc753b9d23b61e500 SHA-1: 28ff4b387e9da8e2eaf2f3dccfd8b0728b90adc3 SHA-256: fbd1eaa637bf9ec6e7a77759026fab8c924114a1fbb5345534152746b6928431
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is a PowerPoint presentation containing a VBA macro. The Auto_Close macro is configured to execute a command using the Shell() function. This function is obfuscated using character-shift decoding (Mid/Asc/Chr), indicating an attempt to hide the malicious command. The primary intent appears to be downloading and executing a second-stage payload from a remote source.

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 http://1230948%1230948@j.mp/jasidjasddijjjj

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
37f0c1de814d2b3f15463b8e0f78c0942476e33806599a35cc9c1dc9f1363b0b
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17065 bytes