Windows
Analysis Report
yoyrJ.dll
Overview
General Information
Detection
Emotet
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected Emotet
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
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
Yara signature match
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
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
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
IP address seen in connection with other malware
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
PE file contains an invalid checksum
Tries to load missing DLLs
Drops PE files to the windows directory (C:\Windows)
Detected TCP or UDP traffic on non-standard ports
Connects to several IPs in different countries
Registers a DLL
Creates a process in suspended mode (likely to inject code)
Classification
- System is w10x64
loaddll64.exe (PID: 3692 cmdline:
loaddll64. exe "C:\Us ers\user\D esktop\yoy rJ.dll" MD5: C676FC0263EDD17D4CE7D644B8F3FCD6) conhost.exe (PID: 3096 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496) cmd.exe (PID: 976 cmdline:
cmd.exe /C rundll32. exe "C:\Us ers\user\D esktop\yoy rJ.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F) rundll32.exe (PID: 5288 cmdline:
rundll32.e xe "C:\Use rs\user\De sktop\yoyr J.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A) regsvr32.exe (PID: 5412 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\RPhOZP FULSaJ\nMw LrZYwR.dll " MD5: D78B75FC68247E8A63ACBA846182740E) WMIADAP.exe (PID: 5412 cmdline:
wmiadap.ex e /F /T /R MD5: 9783D0765F31980950445DFD40DB15DA) regsvr32.exe (PID: 5020 cmdline:
regsvr32.e xe /s C:\U sers\user\ Desktop\yo yrJ.dll MD5: D78B75FC68247E8A63ACBA846182740E) regsvr32.exe (PID: 5908 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\UgFJoE zLBQVtMeg\ qohQcmrlRy nEDAUP.dll " MD5: D78B75FC68247E8A63ACBA846182740E) rundll32.exe (PID: 5284 cmdline:
rundll32.e xe C:\User s\user\Des ktop\yoyrJ .dll,DllRe gisterServ er MD5: 73C519F050C20580F8A62C849D49215A) regsvr32.exe (PID: 4644 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\YbSMYJ yTdzumryV\ WWgeEzfCEn B.dll" MD5: D78B75FC68247E8A63ACBA846182740E) regsvr32.exe (PID: 5132 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Win dows\syste m32\OGxcy\ dYkxHTuA.d ll" MD5: D78B75FC68247E8A63ACBA846182740E) regsvr32.exe (PID: 5132 cmdline:
C:\Windows \system32\ regsvr32.e xe" "C:\Wi ndows\syst em32\UgFJo EzLBQVtMeg \qohQcmrlR ynEDAUP.dl l MD5: D78B75FC68247E8A63ACBA846182740E) regsvr32.exe (PID: 4192 cmdline:
C:\Windows \system32\ regsvr32.e xe "C:\Use rs\user\Ap pData\Loca l\ArkmTuxC aKyXkTDZ\f BEZnVEOT.d ll" MD5: D78B75FC68247E8A63ACBA846182740E)
- cleanup
{"C2 list": ["173.255.211.88:443", "45.63.99.23:7080", "182.162.143.56:443", "91.187.140.35:8080", "212.24.98.99:8080", "119.59.103.152:8080", "45.235.8.30:8080", "172.104.251.154:8080", "72.15.201.15:8080", "169.57.156.166:8080", "103.75.201.2:443", "213.239.212.5:443", "164.90.222.65:443", "201.94.166.162:443", "94.23.45.86:4143", "183.111.227.137:8080", "186.194.240.217:443", "107.170.39.149:8080", "147.139.166.154:8080", "5.135.159.50:443", "206.189.28.199:8080", "104.168.155.143:8080", "129.232.188.93:443", "82.223.21.224:8080", "103.43.75.120:443", "103.132.242.26:8080", "139.59.56.73:8080", "164.68.99.3:8080", "202.129.205.3:8080", "167.172.199.165:8080", "110.232.117.186:8080", "209.97.163.214:443", "167.172.253.162:8080", "1.234.2.232:8080", "159.65.88.10:8080", "95.217.221.146:8080", "153.92.5.27:8080", "91.207.28.33:8080", "188.44.20.25:443", "153.126.146.25:7080", "163.44.196.120:8080", "172.105.226.75:8080", "115.68.227.76:8080", "159.65.140.115:443", "139.59.126.41:443", "197.242.150.244:8080", "45.176.232.124:443", "45.118.115.99:8080", "149.56.131.28:8080", "79.137.35.198:8080", "173.212.193.249:8080", "160.16.142.56:8080", "159.89.202.34:443", "185.4.135.165:8080"], "Public Key": ["RUNTMSAAAABAX3S2xNjcDD0fBno33Ln5t71eii+mofIPoXkNFOX1MeiwCh48iz97kB0mJjGGZXwardnDXKxI8GCHGNl0PFj5J0rtUQAbAIw=", "RUNLMSAAAADzozW1Di4r9DVWzQpMKT588RDdy7BPILP6AiDOTLYMHkSWvrQO5slbmr1OvZ2Pz+AQWzRMggQmAtO6rPH7nyx2AkoOUQAUAJA="]}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
Windows_Trojan_Emotet_db7d33fa | unknown | unknown |
| |
JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
Windows_Trojan_Emotet_db7d33fa | unknown | unknown |
| |
JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
Click to see the 20 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Emotet_1 | Yara detected Emotet | Joe Security | ||
Windows_Trojan_Emotet_db7d33fa | unknown | unknown |
|