Office (OLE) / .DOC malware analysis — malicious · c3182388e8e632e2

MALICIOUS

Office (OLE) / .DOC

81.5 KB Created: 2020-09-17 13:28:00 Authoring application: Microsoft Office Word

MD5: 68e2957be796f97db45c32ce545bdefe SHA-1: 8eec95019ed09b6410bed6e90520130c06f0099a SHA-256: c3182388e8e632e275357d4871ca7d9b63cdd6778b6e02559320ba3e130ab5e9

182 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1218.011 Signed Binary Proxy Execution: Rundll32 T1059.005 Visual Basic

The sample contains a VBA macro that is automatically executed upon opening the document. This macro, named DOCUMenT_opeN, calls a function that uses VBA.Shell to execute a command. The command utilizes rundll32.exe with a JavaScript payload, which is likely intended to download and execute a second-stage payload from the suspicious URL http://52.186.122.65/tos/newone. This indicates a downloader or droppper attack pattern.

Heuristics 6

Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
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.
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.
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
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://52.186.122.65/tos/newone
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `750f79c4263a913fc09275a2dd0cf6ba6f12502a8475ec1f7b177112d91d4ae6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	906 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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