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

Static analysis result for SHA-256 a33fbe351702cfb8…

MALICIOUS

Office (OLE) / .EXE

62.5 KB Created: 2000-04-27 00:02:29 Authoring application: Microsoft Excel
MD5: 2c297daeca759df6f95d4b957b96b217 SHA-1: d71a00f1f5943d6f478860db3e3d864229710a30 SHA-256: a33fbe351702cfb854bf8c715680650a174192478ad840cdabcb8e014db4336d
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is identified as malicious by ClamAV with multiple detections (Xls.Trojan.Barisada-9 and Xls.Trojan.Barisada-2). Static analysis detected VBA macros, which are commonly used to download and execute secondary payloads. The document body presents itself as an Excel function tutorial, a common social engineering tactic to trick users into enabling macros. The presence of VBA macros strongly suggests an intent to execute malicious code.

Heuristics 3

  • ClamAV: Xls.Trojan.Barisada-9 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Trojan.Barisada-9
  • 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.
  • 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
d65771a8e0f883805e2b8aade19dd84c54deea298c87a1026474c85e3942e243		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9180 bytes
Detection
ClamAV: Xls.Trojan.Barisada-2
Obfuscation or payload: unlikely

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