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

Static analysis result for SHA-256 dc9d81a9e222747e…

MALICIOUS

Office (OLE) / .EXE

30.0 KB Created: 1997-10-17 13:32:23 Authoring application: Microsoft Excel
MD5: e3f2f8842755ea6460813d47a4f832c6 SHA-1: 2e04c5aeadb8fd55f9527d0315447153db9490b7 SHA-256: dc9d81a9e222747e6fae0b8c2fb01d90dc78b0f1b184a619c54524c16b9e6509
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Xls.Trojan.Laroux-1. Static analysis detected VBA macros, specifically an Auto_Open macro, which is a common technique for executing malicious code when the document is opened. The presence of the Auto_Open macro strongly suggests an attempt to automatically run malicious code upon opening the file.

Heuristics 4

  • ClamAV: Xls.Trojan.Laroux-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Laroux-1
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • 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
195dd48500a0be98307d955578a55d44c00aea247be7b7cdc336babad41d6624		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1869 bytes
Detection
ClamAV: Xls.Trojan.Laroux-1
Obfuscation or payload: unlikely

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