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

Static analysis result for SHA-256 afb2d0d3f41ea863…

MALICIOUS

Office (OLE) / .PPA

1.66 MB Created: 2007-11-22 09:42:01 Authoring application: Microsoft PowerPoint
MD5: 49bd2cac80d3ac0b8aa1fc01ce77c98c SHA-1: 8599f1764dddec82615931a7c6583fd6755103c9 SHA-256: afb2d0d3f41ea863eba4c5404567f6fc3390eae416d8cf9ea67474652681f931
380 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.003 Windows Command Shell T1218.011 Signed Binary Proxy Execution: Rundll32 T1059.005 Visual Basic

The file is a PowerPoint macro-enabled presentation (PPA) containing a VBA macro with an Auto_Open subroutine. This macro utilizes WScript.Shell and the Shell() function to execute commands, indicating a likely downloader or dropper functionality. The presence of 'SE_LOLBIN_RUN_COMMAND' suggests the use of legitimate Windows binaries for malicious purposes. The embedded URL http://www.pptrick.com is flagged as unknown and is a potential command-and-control or download source.

Heuristics 10

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://www.pptrick.com
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/photoshop/1.0/
    • http://www.iec.ch

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
9f0d906e55f2f8190ddfb666940f4153a905bcb18e5fa27b0b2ba52fb67c8930
vba-macro oletools.olevba.extract_macros (decoded VBA source) 545192 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.