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

Static analysis result for SHA-256 cfe928ae88d6a129…

MALICIOUS

Office (OLE) / .XLS

139.5 KB Created: 2020-03-25 17:06:08 Authoring application: Microsoft Excel
MD5: a69d2ed4c83042ad4e44cad1c4be790b SHA-1: 97d73227462af8a1be6adbcbbd6c1a81ea5211b8 SHA-256: cfe928ae88d6a129abc932dbd76693cd4268c2f5d22a15fee9db2cb03ad5ff23
420 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

This XLS file contains malicious VBA macros, including a Workbook_Open auto-exec macro that utilizes Shell() and WScript.Shell. The document body instructs the user to 'Enable content to view this payment document,' indicating a social engineering lure to bypass macro security. The macros likely download and execute a second-stage payload, though the specific actions are obfuscated.

Heuristics 10

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • ClamAV: Xls.Macro.Obfuscation-9804250-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Macro.Obfuscation-9804250-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
3a1c28041f1514cf47ab64c64f6eeb853abd42773e9ebac83aa6c9b775a68f49		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16155 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved artifact contains 69 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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