Emotet Office (OLE) malware analysis — malicious · 52cf807cd3e41e93

MALICIOUS

Office (OLE)

136.2 KB Created: 2020-10-15 10:28:00 Authoring application: Microsoft Office Word

MD5: 7c2f6dfce4d91967ad7b69991617a86d SHA-1: 8508b023da170551e3d9dede0d3ce42f54d6a6c9 SHA-256: 52cf807cd3e41e939d31e15dc8ca62323c71f190b78fbb8e4552674d0cb9230a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA macro activity. The presence of a 'macros.bas' file further supports this. The primary function of the detected macro appears to be downloading and executing a secondary payload, consistent with Emotet's typical behavior.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9778182-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9778182-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_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
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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `61d5057f532c30cd6ac7bc258d49a0caf86ce433c8ada79ce978d7da665d558b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	11395 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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