Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0780d67931c09ff7…

MALICIOUS

Office (OLE)

711.5 KB Created: 2021-07-14 08:38:23 Authoring application: Microsoft Excel
MD5: 6eac93f907e5b905676bd99a7f947552 SHA-1: 3d3d6e68d3a646ae0055ec7e2c90333800727689 SHA-256: 0780d67931c09ff7844aac62d057c059ff029b93c35c436038afa65420f83a9a
416 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1218.005 System Binary Proxy Execution: Mshta T1071.001 Web Protocols: Web Protocols

The Excel file contains a Workbook_Open VBA macro that iterates through data in Sheet1, concatenates it into a string, and writes it to a file named 'qConeCol.sct' in the ALLUSERSPROFILE directory. This script is then executed using mshta.exe. The macro uses CreateObject("Scripting.FileSystemObject") and WScript.Shell, indicating it's designed to manipulate the file system and execute commands. The presence of invoice-related text in the document body further suggests a lure for malicious activity.

Heuristics 11

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • LOLBin reference in VBA critical OLE_VBA_LOLBIN
    LOLBin reference in VBA
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Reference to mshta.exe high SC_STR_MSHTA
    Reference to mshta.exe
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0a3140fdcd3938a65fef6c2cc2d09ff35869ea3b4cefa0a66a584eef6c9ce162		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1294 bytes

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