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Analysis Report sample1.bin

Overview

General Information

Sample Name:sample1.bin (renamed file extension from bin to doc)
Analysis ID:339446
MD5:7dbd8ecfada1d39a81a58c9468b91039
SHA1:0d21e2742204d1f98f6fcabe0544570fd6857dd3
SHA256:dc40e48d2eb0e57cd16b1792bdccc185440f632783c7bcc87c955e1d4e88fc95

Most interesting Screenshot:

Detection

Emotet
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected Emotet
Creates and opens a fake document (probably a fake document to hide exploiting)
Creates processes via WMI
Document contains an embedded VBA macro with suspicious strings
Drops PE files to the user root directory
Drops executables to the windows directory (C:\Windows) and starts them
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
Antivirus or Machine Learning detection for unpacked file
Contains functionality to call native functions
Contains functionality to delete services
Contains functionality to enumerate running services
Contains functionality to read the PEB
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Deletes files inside the Windows folder
Detected potential crypto function
Document contains an embedded VBA macro which executes code when the document is opened / closed
Document contains embedded VBA macros
Dropped file seen in connection with other malware
Drops PE files
Drops PE files to the user directory
Drops files with a non-matching file extension (content does not match file extension)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found inlined nop instructions (likely shell or obfuscated code)
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Tries to connect to HTTP servers, but all servers are down (expired dropper behavior)
Uses Microsoft's Enhanced Cryptographic Provider
Uses code obfuscation techniques (call, push, ret)
Yara signature match

Classification

Startup

  • System is w7x64
  • WINWORD.EXE (PID: 2264 cmdline: 'C:\Program Files\Microsoft Office\Office14\WINWORD.EXE' /Automation -Embedding MD5: 95C38D04597050285A18F66039EDB456)
  • certutil.exe (PID: 2440 cmdline: Certutil -decode C:\Users\Public\Ksh1.xls C:\Users\Public\Ksh1.pdf MD5: 4586B77B18FA9A8518AF76CA8FD247D9)
  • svchost.exe (PID: 2348 cmdline: C:\Windows\System32\svchost.exe -k WerSvcGroup MD5: C78655BC80301D76ED4FEF1C1EA40A7D)
  • tmp_e473b4.exe (PID: 1772 cmdline: C:\Users\user\AppData\Local\Temp/tmp_e473b4.exe MD5: E87553AEBAC0BF74D165A87321C629BE)
    • auditpolmsg.exe (PID: 1688 cmdline: C:\Windows\SysWOW64\srclient\auditpolmsg.exe MD5: E87553AEBAC0BF74D165A87321C629BE)
      • wcnwiz.exe (PID: 2064 cmdline: C:\Windows\SysWOW64\mfc110\wcnwiz.exe MD5: E87553AEBAC0BF74D165A87321C629BE)
        • SampleRes.exe (PID: 2004 cmdline: C:\Windows\SysWOW64\capiprovider\SampleRes.exe MD5: E87553AEBAC0BF74D165A87321C629BE)
          • NlsData0414.exe (PID: 2364 cmdline: C:\Windows\SysWOW64\RMActivate_ssp_isv\NlsData0414.exe MD5: E87553AEBAC0BF74D165A87321C629BE)
            • mfc140.exe (PID: 1664 cmdline: C:\Windows\SysWOW64\KBDNO\mfc140.exe MD5: E87553AEBAC0BF74D165A87321C629BE)