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

Static analysis result for SHA-256 5cf7bc9a59fcd10c…

MALICIOUS

Office (OLE) / .XLS

62.5 KB Created: 2020-05-04 07:48:11 Authoring application: Microsoft Excel
MD5: b6f7af2ec063c060e91b76ded8fabc24 SHA-1: 58fda604e5926c06e479c7fd4f6b14c31a4ee588 SHA-256: 5cf7bc9a59fcd10c02ca84c8dc4993b6f4425c645d863e69ea146668acf244a4
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059 Command and Scripting Interpreter

The sample is an Excel document containing VBA macros. The macros utilize WScript.Shell and CreateObject to execute commands, likely downloading and running a second-stage payload. The presence of 'Doc.Dropper.Agent-7758917-0' in ClamAV detection further supports its role as a dropper.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • ClamAV: Doc.Dropper.Agent-7758917-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-7758917-0
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
afee68aba5b0c8fd334b28a3c823e20205b61e3a8a8c5396e0288baab6822680		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1268 bytes

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