Emotet Office (OLE) / .XLSX malware analysis — malicious · 3b32ad22b3117a09

MALICIOUS

Office (OLE) / .XLSX

138.0 KB Created: 2022-02-09 09:48:26 Authoring application: Microsoft Excel

MD5: 9133bb901a0219b19e39d3250c744ad6 SHA-1: d88f4f87c547bbea19a9ab3cd1f34db047d07452 SHA-256: 3b32ad22b3117a09a5c46c9fff87a5bf6dff8189a40f4d83c09615b778f4d383

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains a Workbook_Open macro that uses CreateObject to execute a series of commands. The macro reconstructs a URL from concatenated strings: "http://midnighsilverbcraft.com/store/wBjNOUw/B110N4cA6R3/", "http://temp.com/NAT_05_22_2009/BI710N4cA6R3/", and "https://redington.karmart". It then proceeds to download and execute a VBScript from one of these URLs, saving it as 'oue4hjld.vbs' in 'c:\programdata\'. The script also creates a batch file named 'bhnasleil.bat' in the same directory. The ClamAV detection name 'Doc.Downloader.EmotetRed02220-9938909-0' strongly suggests an Emotet family attribution.

Heuristics 6

ClamAV: Doc.Downloader.EmotetRed02220-9938909-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02220-9938909-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `f56c85a8fb69a7e4448082a35076bc6d5f26603fec8979188a54b6fc1e779774`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	52433 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.