Emotet Office (OLE) / .XLSX malware analysis — malicious · 9a1ae2a60b6e6ae4

MALICIOUS

Office (OLE) / .XLSX

144.0 KB Created: 2006-09-28 05:33:49 Authoring application: Microsoft Excel

MD5: a993080efc436e4c09499c223783b452 SHA-1: 46117ccfacd2cf952f14cca7a2d0b456fddb092a SHA-256: 9a1ae2a60b6e6ae4f83bea16da4210daadfaaaf8c2a4973659ea3fc1d7db5977

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and multiple high-severity heuristics, including OLE_VBA_PCODE_AUTOEXEC_EXEC and OLE_VBA_WBOPEN, indicate malicious VBA macros. The Workbook_Open macro is designed to execute a series of commands that reconstruct and download payloads from multiple URLs. Specifically, the script reconstructs the following URLs: "http://philiatek.com/wp-content/i6xZ9PEL4QAOWL9O/", "http://diademfinan.com/oxly7swr/IfH/", "http://khustle.com/cgi-bin/jz381CkM5gYgMH/", "http://newalply.com.alply.com/dmcbg7ss/X4bbl6/", "http://nostringgattachedreleationship.net/wp-content/DuD8qn c/", "https://acorgift.com/wp-content/YhNgI/", "http://russia-coins.info/librares/8oDzr/", "http://daisy.sukobur-secure.com/assets/qrwbWPSM/", and "http://pdbbsmp.insanrabany.sch.id/assets/eofgcHjWVR9o/". It also attempts to write a batch file to c:\programdata\tydkjxjd.bat, likely to execute the downloaded payload.

Heuristics 7

ClamAV: Doc.Downloader.EmotetExcel02226-9938630-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
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` `022b6ea87e671715cd07f596eceb5d45e85534a367868a0e820c8aa5cb013822`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6734 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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