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

Static analysis result for SHA-256 f9af01d069b1fd33…

MALICIOUS

Office (OLE) / .PPT

99.0 KB Created: 2021-01-12 20:38:51 Authoring application: Microsoft Office PowerPoint
MD5: 76330e777cfee2f261e9989c2a2992b1 SHA-1: bb2135a0d23b4535b58205e6f1f281fbe997d041 SHA-256: f9af01d069b1fd33f35b0892dc3b8769f30ffd82a43c1f827eb7c393aac6463b
222 Risk Score

Malware Insights

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

The sample is a PowerPoint file containing VBA macros. Critical heuristics indicate the use of Shell() and character-shift decoding to execute commands. The Auto_Close macro is present, suggesting execution upon closing the document. The embedded URL, though marked as benign, was likely intended as a download source for a secondary payload. The VBA code uses character manipulation functions like Mid, Asc, and Chr to obfuscate the Shell command.

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%1230948%1230948@j.mp/vdjagsdjajfdjasgdjasgd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
b0524aa125c8dd94abecca2e2b2037504ca0416e0c974c105c8e5f56be904441
vba-macro oletools.olevba.extract_macros (decoded VBA source) 17090 bytes