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Windows Analysis Report
En3ZIyuYdw.dll

Overview

General Information

Sample Name:En3ZIyuYdw.dll
Analysis ID:745000
MD5:633fd626fe5a1328fac74f20daf91f59
SHA1:01d495949dd7e86ebdaf326da882d022d73c1d7f
SHA256:23a872dfbba73a7f72bd24c68a0a3f5294bd0f60cab1ed0e5b2c80735fcb40ac
Tags:dllexe
Infos:

Detection

Emotet
Score:84
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected Emotet
System process connects to network (likely due to code injection or exploit)
Snort IDS alert for network traffic
Creates an autostart registry key pointing to binary in C:\Windows
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Queries the volume information (name, serial number etc) of a device
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
PE file contains sections with non-standard names
Internet Provider seen in connection with other malware
Detected potential crypto function
Contains functionality to query CPU information (cpuid)
Sample execution stops while process was sleeping (likely an evasion)
Contains functionality which may be used to detect a debugger (GetProcessHeap)
IP address seen in connection with other malware
Tries to load missing DLLs
Drops PE files to the windows directory (C:\Windows)
Connects to several IPs in different countries
Registers a DLL
Found large amount of non-executed APIs
Uses Microsoft's Enhanced Cryptographic Provider
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • loaddll64.exe (PID: 4360 cmdline: loaddll64.exe "C:\Users\user\Desktop\En3ZIyuYdw.dll" MD5: C676FC0263EDD17D4CE7D644B8F3FCD6)
    • conhost.exe (PID: 5960 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • cmd.exe (PID: 1408 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\En3ZIyuYdw.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
      • rundll32.exe (PID: 1648 cmdline: rundll32.exe "C:\Users\user\Desktop\En3ZIyuYdw.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A)
        • regsvr32.exe (PID: 1876 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\KkpTOJipNydtZ\ukztcGVtQBo.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 4768 cmdline: regsvr32.exe /s C:\Users\user\Desktop\En3ZIyuYdw.dll MD5: D78B75FC68247E8A63ACBA846182740E)
      • regsvr32.exe (PID: 5992 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\HVTkRBUydWHs\wOpoKzU.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • rundll32.exe (PID: 2256 cmdline: rundll32.exe C:\Users\user\Desktop\En3ZIyuYdw.dll,DllRegisterServer MD5: 73C519F050C20580F8A62C849D49215A)
      • regsvr32.exe (PID: 2992 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\RJsEQYV\DCGMIKhx.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 6084 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\IASGzYkaksn\BFlBQr.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
  • regsvr32.exe (PID: 5768 cmdline: C:\Windows\system32\regsvr32.exe" "C:\Windows\system32\RJsEQYV\DCGMIKhx.dll MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 1444 cmdline: C:\Windows\system32\regsvr32.exe "C:\Users\user\AppData\Local\QYzAfBQRbM\CtOPL.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
  • cleanup
{"C2 list": ["172.105.115.71:8080", "218.38.121.17:443", "186.250.48.5:443", "103.71.99.57:8080", "85.214.67.203:8080", "85.25.120.45:8080", "139.196.72.155:8080", "103.85.95.4:8080", "198.199.70.22:8080", "209.239.112.82:8080", "78.47.204.80:443", "36.67.23.59:443", "104.244.79.94:443", "62.171.178.147:8080", "195.77.239.39:8080", "103.56.149.105:8080", "80.211.107.116:8080", "93.104.209.107:8080", "174.138.33.49:7080", "202.28.34.99:8080", "178.62.112.199:8080", "114.79.130.68:443", "118.98.72.86:443", "103.41.204.169:8080", "178.238.225.252:8080", "83.229.80.93:8080", "46.101.98.60:8080", "82.98.180.154:7080", "87.106.97.83:7080", "196.44.98.190:8080", "139.59.80.108:8080", "103.224.241.74:8080", "103.254.12.236:7080", "185.148.169.10:8080", "165.22.254.236:8080", "37.44.244.177:8080", "54.37.228.122:443", "51.75.33.122:443", "128.199.217.206:443", "188.165.79.151:443", "210.57.209.142:8080", "160.16.143.191:8080", "175.126.176.79:8080", "202.134.4.210:7080", "103.126.216.86:443", "190.145.8.4:443", "128.199.242.164:8080", "64.227.55.231:8080"]}
SourceRuleDescriptionAuthorStrings
00000006.00000002.700027974.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
    0000000C.00000002.461600527.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
      00000003.00000002.314902232.00000000020E0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
        00000004.00000002.314643058.000001F1B4D30000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
          00000000.00000002.317524653.0000020509D30000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
            Click to see the 7 entries
            SourceRuleDescriptionAuthorStrings
            6.2.regsvr32.exe.2750000.0.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
              4.2.rundll32.exe.1f1b4d30000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                5.2.rundll32.exe.1f592ec0000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                  3.2.regsvr32.exe.20e0000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                    12.2.regsvr32.exe.2660000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                      Click to see the 7 entries
                      No Sigma rule has matched
                      Timestamp:192.168.2.5115.178.55.2249700802404304 11/13/22-16:54:45.127001
                      SID:2404304
                      Source Port:49700
                      Destination Port:80
                      Protocol:TCP
                      Classtype:A Network Trojan was detected

                      Click to jump to signature section

                      Show All Signature Results

                      AV Detection

                      barindex
                      Source: En3ZIyuYdw.dllVirustotal: Detection: 45%Perma Link
                      Source: 00000006.00000002.697285078.0000000000D98000.00000004.00000020.00020000.00000000.sdmpMalware Configuration Extractor: Emotet {"C2 list": ["172.105.115.71:8080", "218.38.121.17:443", "186.250.48.5:443", "103.71.99.57:8080", "85.214.67.203:8080", "85.25.120.45:8080", "139.196.72.155:8080", "103.85.95.4:8080", "198.199.70.22:8080", "209.239.112.82:8080", "78.47.204.80:443", "36.67.23.59:443", "104.244.79.94:443", "62.171.178.147:8080", "195.77.239.39:8080", "103.56.149.105:8080", "80.211.107.116:8080", "93.104.209.107:8080", "174.138.33.49:7080", "202.28.34.99:8080", "178.62.112.199:8080", "114.79.130.68:443", "118.98.72.86:443", "103.41.204.169:8080", "178.238.225.252:8080", "83.229.80.93:8080", "46.101.98.60:8080", "82.98.180.154:7080", "87.106.97.83:7080", "196.44.98.190:8080", "139.59.80.108:8080", "103.224.241.74:8080", "103.254.12.236:7080", "185.148.169.10:8080", "165.22.254.236:8080", "37.44.244.177:8080", "54.37.228.122:443", "51.75.33.122:443", "128.199.217.206:443", "188.165.79.151:443", "210.57.209.142:8080", "160.16.143.191:8080", "175.126.176.79:8080", "202.134.4.210:7080", "103.126.216.86:443", "190.145.8.4:443", "128.199.242.164:8080", "64.227.55.231:8080"]}
                      Source: C:\Windows\System32\loaddll64.exeCode function: 0_2_00007FFA0AE79410 CryptStringToBinaryA,CryptStringToBinaryA,0_2_00007FFA0AE79410
                      Source: C:\Windows\System32\regsvr32.exeCode function: 3_2_00007FFA0AE79410 CryptStringToBinaryA,CryptStringToBinaryA,3_2_00007FFA0AE79410
                      Source: En3ZIyuYdw.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
                      Source: C:\Windows\System32\loaddll64.exeCode function: 0_2_00007FFA0AE6C334 FindFirstFileExW,0_2_00007FFA0AE6C334
                      Source: C:\Windows\System32\regsvr32.exeCode function: 3_2_00007FFA0AE6C334 FindFirstFileExW,3_2_00007FFA0AE6C334

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