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

Static analysis result for SHA-256 3b33de227d781592…

MALICIOUS

Office (OLE) / .PPT

68.0 KB Created: 2021-06-23 21:14:32 Authoring application: Microsoft Office PowerPoint
MD5: 8c58cfb19b187ba882a4c2a97ceba0d3 SHA-1: a64790fc4f9faab92365ee7753bdbb037cdba509 SHA-256: 3b33de227d781592fc08ed718919b2fee6c9388443a0828cadb0bbd92624ff02
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 User Execution: Malicious File T1059.005 Command and Scripting Interpreter: Visual Basic for Applications T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1547.001 Persistence: Registry run keys / Startup Folder T1105 Ingress Tool Transfer

The VBA script contains a function 'mindblowing' that constructs a URL using fragmented strings across multiple modules. The 'whatihavedone' function then passes this constructed URL to the Shell() function, which is triggered by the 'Auto_Close' event. This indicates the intent to execute a remote payload from the the shortened URL http://j.mp/j.mp/dhyuasobdckas tyuibdhasgdhysa

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
76d0d2da914701425b289f5eeef4328f283fe3d4c875b879399b188249c13eb3		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 829 bytes

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