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

Static analysis result for SHA-256 19eaba24768cc1c5…

MALICIOUS

Office (OLE) / .PPT

63.5 KB Created: 2022-01-13 20:55:37 Authoring application: Microsoft Office PowerPoint
MD5: c0bdeb9c9a0f0db1b756e7557e750e08 SHA-1: ff3460b8df1de309edf6fce7387370288cd73bab SHA-256: 19eaba24768cc1c57c3e45e7dd43089568907238fe18593052051374967bf875
282 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1218.005 System Binary Proxy Execution: Mshta

The sample is a PowerPoint file containing a VBA macro named Auto_Open. This macro calls a function that uses VBA.Shell to execute a command. The heuristic firings indicate a reference to mshta.exe and a Shell() call within the VBA code. The presence of 'mshta https://' in the document text further suggests that mshta.exe is used to download and execute a payload from a URL. The specific URL is not fully reconstructed, but the intent is clear.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Reference to mshta.exe high SC_STR_MSHTA
    Reference to mshta.exe
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 https://bitly.com/dhsjkadhashdghagh

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2148fdf9632c701fc08d6a724aeac37f50ed793461d04868e12a18ab26d3cc35		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 910 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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