Joe Sandbox Cloud Basic Analysis Report

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Windows Analysis Report
3sbn8ZI5nn.exe

Overview

General Information

Sample Name:3sbn8ZI5nn.exe (renamed file extension from exe to dll)
Analysis ID:745023
MD5:0e9ae665ac72a551e6fb23f671a6debb
SHA1:416f6a2f9d13f852e5b74f52ce4dd2eb7ba9de3d
SHA256:ef1d7a9f54b93ab4e2e35bb34f847c13f1afdd7e0779d290bebe7595e30deb72
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
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
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

Process Tree

  • System is w10x64
  • loaddll64.exe (PID: 6092 cmdline: loaddll64.exe "C:\Users\user\Desktop\3sbn8ZI5nn.dll" MD5: C676FC0263EDD17D4CE7D644B8F3FCD6)
    • conhost.exe (PID: 6088 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • cmd.exe (PID: 6060 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\3sbn8ZI5nn.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
      • rundll32.exe (PID: 3820 cmdline: rundll32.exe "C:\Users\user\Desktop\3sbn8ZI5nn.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A)
        • regsvr32.exe (PID: 5388 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\RDczMDqHt\aAoqtcPuM.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
      • MpCmdRun.exe (PID: 68 cmdline: "C:\Program Files\Windows Defender\mpcmdrun.exe" -wdenable MD5: A267555174BFA53844371226F482B86B)
        • conhost.exe (PID: 5104 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
    • regsvr32.exe (PID: 5136 cmdline: regsvr32.exe /s C:\Users\user\Desktop\3sbn8ZI5nn.dll MD5: D78B75FC68247E8A63ACBA846182740E)
      • regsvr32.exe (PID: 5364 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\UYBDis\zUQXLCCaPRO.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • rundll32.exe (PID: 5124 cmdline: rundll32.exe C:\Users\user\Desktop\3sbn8ZI5nn.dll,DllRegisterServer MD5: 73C519F050C20580F8A62C849D49215A)
      • regsvr32.exe (PID: 5436 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\UyotLQPaxHMZcAcJw\vcAnFxvlnpwAYy.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 5320 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\OkmLFCYLyqOEAi\VeCtOcqCU.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
  • regsvr32.exe (PID: 1632 cmdline: C:\Windows\system32\regsvr32.exe" "C:\Windows\system32\RDczMDqHt\aAoqtcPuM.dll MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 5124 cmdline: C:\Windows\system32\regsvr32.exe "C:\Users\user\AppData\Local\CefliwalFHXv\dxxQ.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
  • cleanup

Malware Configuration

Threatname: 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"], "Public Key": ["RUNTMSAAAAD0LxqDNhonUYwk8sqo7IWuUllRdUiUBnACc6romsQoe1YJD7wIe4AheqYofpZFucPDXCZ0z9i+ooUffqeoLZU0N0YIqXoCAJA=", "RUNLMSAAAADYNZPXY4tQxd/N4Wn5sTYAm5tUOxY2ol1ELrI4MNhHNi640vSLasjYTHpFRBoG+o84vtr7AJachCzOHjaAJFCWxEHdqQArAJA="]}

Yara Signatures

Memory Dumps

SourceRuleDescriptionAuthorStrings
00000000.00000002.262135627.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
    00000004.00000002.259508920.00000295089F0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
      00000003.00000002.260135838.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
        00000011.00000002.407230775.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
          00000003.00000002.258603495.0000000000970000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
            Click to see the 7 entries

            Unpacked PEs

            SourceRuleDescriptionAuthorStrings
            5.2.rundll32.exe.13c72960000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
              3.2.regsvr32.exe.970000.0.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                6.2.regsvr32.exe.20b0000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                  17.2.regsvr32.exe.440000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                    5.2.rundll32.exe.13c72960000.0.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                      Click to see the 7 entries

                      Sigma Signatures

                      ⊘No Sigma rule has matched

                      Snort Signatures

                      Timestamp:192.168.2.6115.178.55.2249715802404304 11/13/22-17:40:22.059296
                      SID:2404304
                      Source Port:49715
                      Destination Port:80
                      Protocol:TCP
                      Classtype:A Network Trojan was detected

                      Joe Sandbox Signatures

                      Click to jump to signature section

                      Show All Signature Results

                      AV Detection

                      barindex
                      Multi AV Scanner detection for submitted file
                      Source: 3sbn8ZI5nn.dllVirustotal: Detection: 42%Perma Link
                      Source: 00000006.00000002.767698100.00000000004A8000.00000004.00000020.00020000.00000000.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"], "Public Key": ["RUNTMSAAAAD0LxqDNhonUYwk8sqo7IWuUllRdUiUBnACc6romsQoe1YJD7wIe4AheqYofpZFucPDXCZ0z9i+ooUffqeoLZU0N0YIqXoCAJA=", "RUNLMSAAAADYNZPXY4tQxd/N4Wn5sTYAm5tUOxY2ol1ELrI4MNhHNi640vSLasjYTHpFRBoG+o84vtr7AJachCzOHjaAJFCWxEHdqQArAJA="]}
                      Source: C:\Windows\System32\loaddll64.exeCode function: 0_2_00007FFD14679410 CryptStringToBinaryA,CryptStringToBinaryA,0_2_00007FFD14679410
                      Source: C:\Windows\System32\regsvr32.exeCode function: 3_2_00007FFD14679410 CryptStringToBinaryA,CryptStringToBinaryA,3_2_00007FFD14679410
                      Source: 3sbn8ZI5nn.dllStatic PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
                      Source: C:\Windows\System32\loaddll64.exeCode function: 0_2_00007FFD1466C334 FindFirstFileExW,0_2_00007FFD1466C334
                      Source: C:\Windows\System32\