Office (OLE) malware analysis — malicious · 2ee7fcf97a64675b

MALICIOUS

Office (OLE)

76.6 KB Created: 2018-11-05 17:18:00 Authoring application: Microsoft Office Word First seen: 2019-08-04

MD5: ba1408e57e405f0e29e01e416630b510 SHA-1: d9d8be9af76be151ac1a455d7719bb9450e18dc6 SHA-256: 2ee7fcf97a64675bacaee65a734e6675dd6deb78304199b309474bb5fbccf74a

122 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.003 Windows Command Shell T1566.001 Spearphishing Attachment

The sample contains a heavily obfuscated command that invokes cmd.exe to execute a PowerShell command. This PowerShell command decodes a Base64 string, decompresses it, and then executes it. The command also sets a variable and invokes a method that suggests further execution or payload delivery. This indicates the document is designed to download and run a second-stage payload.

Heuristics 4

Suspicious cmd.exe invocation with execution flag high SC_STR_CMD

Suspicious cmd.exe invocation with execution flag
Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND

Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

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