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

Static analysis result for SHA-256 5cf5f4dec087bbe6…

MALICIOUS

Office (OLE) / .XLS

718.0 KB Created: 2020-06-22 10:41:03 Authoring application: Microsoft Excel
MD5: 7e48a661e1540e43d65e2073a7af30a1 SHA-1: 69fd5745f611480e215e2bc508cf860a8b765172 SHA-256: 5cf5f4dec087bbe671cacb8d266bb97784088b547f792d818f94cadbed20e1d8
302 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The file contains VBA macros, including a Workbook_Open event, which is a common technique for executing malicious code upon opening. The presence of a Shell() call and CreateObject() indicates the macro attempts to run external commands or applications. The ClamAV detection of 'Xls.Packed.Logan-9738662-0' further confirms its malicious nature, suggesting it's a packed Excel-based malware.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Xls.Packed.Logan-9738662-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Packed.Logan-9738662-0
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Suspicious extracted artifact info 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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
38914cdf3136c806ee17787d05d20009b8f47a53c3746a58c6d3b1ba4d51a035		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22716 bytes
ole10native_00.bin
db6663486881c55714aa8f2b27ef6c462dfd620eeabf1f8a54cd29bd70b146c9		 ole-package OLE Ole10Native stream: MBD00125222/Ole10Native 431319 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.

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