Office (OLE) / .XLS malware analysis — malicious · 93c301a05293e50c

MALICIOUS

Office (OLE) / .XLS

556.5 KB Created: 2018-12-06 20:43:11 Authoring application: Microsoft Excel

MD5: de5cf98719c3c9a0842bf1c17dd0a0ea SHA-1: dc63c3293c97c38d708eeffbdc4f1a82a354ec62 SHA-256: 93c301a05293e50ce70d4ff1136d84c99a124bea80dc88a021787f80788a07be

348 Risk Score

Heuristics 9

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
WScript.Shell usage critical OLE_VBA_WSCRIPT

WScript.Shell usage
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `e180900c4b1312533cad889fe56c7a8f1d0329a411f0b0be4aa9cfc1e2558a0a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	44040 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 shell/COM execution token(s). Carved artifact contains 13 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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