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

Static analysis result for SHA-256 f75b1fd6ef0203d2…

MALICIOUS

Office (OLE) / .PPT

68.0 KB Created: 2022-03-22 01:30:50 Authoring application: Microsoft Office PowerPoint First seen: 2022-03-22
MD5: 62da3c7a17b49bc39eb37c8d756b85a5 SHA-1: b6e671eef00c843a0e305a80cd78b39bededd766 SHA-256: f75b1fd6ef0203d24fa91d5e3e946b3c99b3b89886c7da5441042e436dc3129b
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The sample is a macro-enabled PowerPoint file with an Auto_Open macro, indicating it's designed to execute automatically upon opening. The VBA script reconstructs a path to C:\Users\Public\Documents\secret.hta, suggesting it downloads and executes a second-stage payload. The GetObject call further supports the execution of external code. The overall intent appears to be a lure to execute a malicious file disguised as an error message.

Heuristics 4

  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6d48023607d45a7b62188cf76b275c15341f1aed413db323de2865e9d7648334		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3440 bytes

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