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

Static analysis result for SHA-256 edceea16859ea631…

MALICIOUS

Office (OLE) / .XLS

120.0 KB Created: 2021-11-03 01:10:23 Authoring application: Microsoft Excel
MD5: 9ad5f71f01f4add919bc27ae9ee4972b SHA-1: 4693f5b6d279e2bb9ee8ab3473fd756d5bde986f SHA-256: edceea16859ea6318d6d3af1135b73aacb9c1d955b73c985d9cffc86ba83dd30
140 Risk Score

Malware Insights

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

The Workbook_Open macro executes a GetObject call to create a batch file named 'god.bat' in the public documents directory. This batch file contains a PowerShell command that downloads an executable from 'http://ddl8.data.hu/get/333657/13082333/YConsoleApp118bg.exe' and saves it as 'healthforeign.exe' in the same directory, before executing it. The script then attempts to open the downloaded executable.

Heuristics 4

  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7662b437a1d5e496b56fdd85f24a2b98ceac926747b1052331e2bf34162934d4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1363 bytes

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