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

Static analysis result for SHA-256 8c51bd57966ec69d…

MALICIOUS

Office (OLE) / .DOC

115.0 KB Created: 2021-11-11 23:54:00 Authoring application: Microsoft Office Word
MD5: 70a49a915b357be6a9379c38953e71ac SHA-1: dfa1458ad52d175f166f9b0c00d26c5926c19885 SHA-256: 8c51bd57966ec69de3ab44f909272ba471ba7aa29728e182689e715747a3f507
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The Document_Open macro executes a PowerShell command that downloads a second-stage executable from 'http://bit.do/mar-signature_request' and saves it as 'C:\Users\Public\Documents\bornexist.exe'. The macro also creates a batch file 'C:\Users\Public\Documents\god.bat' containing the PowerShell command. The use of GetObject to interact with COM objects suggests an attempt to establish persistence or execute arbitrary code.

Heuristics 6

  • ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
  • 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
882daaa86840941b8a14f40010447ee2ba26b831a009cd86dc9e1770c1434f49		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1174 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.