Doc.Trojan.Nori-1 Office (OLE) malware analysis — malicious · 4eab8c4d6ea71b6e

MALICIOUS

Office (OLE)

40.0 KB Created: 2009-03-18 15:42:00 Authoring application: Microsoft Word 8.0

MD5: e99047574096a09022ae6b536a60bd8a SHA-1: 086ba0272c475b08c9894e300481c6164c4c8577 SHA-256: 4eab8c4d6ea71b6e83edb5ab95f17f5307e48ca4b0acb8d380c86834b94270bd

180 Risk Score

Malware Insights

Doc.Trojan.Nori-1 · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Nori-1. Static analysis detected a high-severity AutoOpen VBA macro, indicating that malicious code will execute upon opening the document. The document body contains educational text in Kazakh, likely serving as a lure to disguise the malicious intent of the embedded VBA macro.

Heuristics 4

ClamAV: Doc.Trojan.Nori-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Nori-1
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
AutoOpen macro high OLE_VBA_AUTOOPEN

AutoOpen macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `50b5a091f6f5cee4ab646dbb9f6e9a98f8914782018ff8b704d7dfc1f28db34f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8080 bytes
Detection ClamAV: Doc.Trojan.Nori-1 Obfuscation or payload: unlikely

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