MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1547.001 Registry Run Keys / Startup Folder
The sample contains a VBA macro that is triggered by the Document_Open event. This macro appears to be responsible for dropping and executing a secondary payload. Specifically, it attempts to create a file named 'reform.doc' in the user's public documents folder with the password '2281337' and also attempts to establish persistence by writing to the registry key HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy. The macro is partially truncated, which limits full analysis, but the intent to download and execute a second-stage payload is clear.
Heuristics 5
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Office EPRINT stream contains EMF object high OLE_EPRINT_EMF_OBJECTOLE ObjectPool contains an EPRINT stream with EMF data. This is rare in normal documents and is CVE-2007-3893/MS07-046-family evidence when paired with Office exploit payload anomalies, but the malformed EMF record is not proven by this rule alone.
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Document_Open macro high OLE_VBA_DOCOPENDocument_Open macro
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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne 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.
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Embedded URL info EMBEDDED_URLOne 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.microsoft.com/office/2006/encryption
- http://schemas.microsoft.com/office/2006/keyEncryptor/password
- http://schemas.microsoft.com/office/2006/keyEncryptor/certificate
- http://schemas.openxmlformats.org/drawingml/2006/main
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
macros.bas6545c017c951dc2c50da94f34055cd666f82c1c4c6fbd7a20a63bfd0cefad56c |
vba-macro | oletools.olevba.extract_macros (decoded VBA source) | 2917 bytes |
ole10native_00.bin854e3e07beb6bb9c21bff74ccccef6848bd93e50e82799e8e3234a4dbe40afc4 |
ole-package | OLE Ole10Native stream: ObjectPool/_1693007205/Ole10Native | 326465 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact entropy is 7.98, consistent with packed or encrypted content.
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