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

Static analysis result for SHA-256 ae532b07108fb646…

MALICIOUS

Office (OLE) / .DOC

630.0 KB Created: 2021-10-28 10:08:00 Authoring application: Microsoft Office Word
MD5: e400c69a497da997e248081a24e59a4a SHA-1: 3e36838fabd4fa3964b4feda5ea7a83ec3a4de19 SHA-256: ae532b07108fb646ea32f903d35d6f31f2e0abe9f37bbd2e3d0c1abe6335b281
142 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The Document_Open VBA macro is designed to execute a malicious payload. It constructs a batch file at C:\Users\Public\Documents\god.bat which then uses PowerShell to download an executable from http://coachcarmenwilliams.com/RFQ012.exe and save it as C:\Users\Public\Documents\leastalready.exe. The macro then attempts to execute this downloaded file. The script also attempts to establish persistence by writing to the registry key HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy.

Heuristics 5

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_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
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a82dda6e9a8de4b1206cb8f47a1a1dd5b2a1b3d39a512d8cbe999f11897be7b1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1050 bytes