Office (OLE) / .DOC malware analysis — malicious · 199a63dfaea55bc2

MALICIOUS

Office (OLE) / .DOC

386.0 KB Created: 2020-01-12 07:10:00 Authoring application: Microsoft Office Word

MD5: 44426a146a7b246355869169c5b717e7 SHA-1: 7a677d9dc61b93bf7ed0d510c051d6323f74d9a1 SHA-256: 199a63dfaea55bc2a7beeb493bfbc717217479edfc4793597a89ab541c92f4d9

270 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains VBA macros that are automatically executed upon opening the document. The Document_Open macro initiates the execution of 'MoferfileLdr', which is designed to download and extract a file named 'ulhtagnias.exe' into the '%ALLUSERSPROFILE%\DeIA-WIR\' directory. This indicates a clear intent to download and execute a second-stage payload, likely for further malicious activities.

Heuristics 8

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
ClamAV: Doc.Malware.Valyria-10016598-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-10016598-0
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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` `5899e988385fca5e8fd37843051224fa14f20f299d624ce769d016d940e11dab`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3568 bytes

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