Emotet Office (OLE) malware analysis — malicious · 6d849f43785ca5cf

MALICIOUS

Office (OLE)

230.3 KB Created: 2020-08-14 23:47:00 Authoring application: Microsoft Office Word

MD5: 64b28ddebb3c73bcdf73b7bbc7e0d619 SHA-1: 2beccf5d839a8d0d39c108be3b6ffa2eb97d6ca3 SHA-256: 6d849f43785ca5cf641082748de6d9fd4c8b5d11863de48acfff9ebe7ab20b32

262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet malware. The ClamAV detection explicitly names Emotet. The VBA script likely attempts to download and execute a second-stage payload, a common Emotet behavior.

Heuristics 7

VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER

VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
ClamAV: Doc.Downloader.Emotet-9349720-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9349720-0
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
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` `c9e222625209724b824cd241f8d136260a3fd5171cd978940b3d275289318aae`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8071 bytes

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