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

Static analysis result for SHA-256 abed5ead9c0bf7b2…

MALICIOUS

Office (OLE) / .DOC

132.0 KB Created: 2023-10-07 04:28:00 Authoring application: Microsoft Office Word First seen: 2023-10-23
MD5: 12312c74772684e970998dbd2a6e1e93 SHA-1: fa0d4e11666d4ef791e652a1f7c9449a778c27c3 SHA-256: abed5ead9c0bf7b23cf41a3cac841658943dd4059af3287c87e577471ecefd43
402 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The AutoOpen VBA macro is designed to download content from the URL 'http://g119847.hostde20.fornex.host/information.php?nocache=' using MSXML2.XMLHTTP. The downloaded content is then executed as a command using WScript.Shell. This indicates a downloader or droppper functionality, common in initial access stages of an attack.

Heuristics 10

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Obfuscated VBA Shell command with URL critical OLE_VBA_OBFUSCATED_SHELL_URL
    VBA macro invokes Shell with command text assembled through decoder or string-manipulation functions and includes a URL. This is a high-confidence downloader/dropper pattern, stronger than Shell or URL evidence on their own.
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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.
  • 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.
  • 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://g119847.hostde20.fornex.host/information.php?nocache=
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c1194d87070de4e3e3e4aa3dccd22b6be88c7257b22bb21fd490b704a315dddd		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1252 bytes

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