Windows Analysis Report 50b0000.dll

Overview

General Information

Sample Name: 50b0000.dll
Analysis ID: 498827
MD5: 58f21c7dda3babf8bb6eeabb0949c496
SHA1: e967834ee1b6ae315d43ca8f640db4dba76e5a0f
SHA256: c88152c5a3a00f6bc9dbc4958659f7fb80b90c39a256fbc2e774a8c70affae1a
Tags: dll
Infos:

Most interesting Screenshot:

Detection

Ursnif
Score: 64
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus / Scanner detection for submitted sample
Found malware configuration
Yara detected Ursnif
Uses 32bit PE files
PE file does not import any functions
Tries to load missing DLLs
Program does not show much activity (idle)
Creates a process in suspended mode (likely to inject code)
Checks if the current process is being debugged

Classification

AV Detection:

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Antivirus / Scanner detection for submitted sample
Source: 50b0000.dll Avira: detected
Found malware configuration
Source: 50b0000.dll Malware Configuration Extractor: Ursnif {"RSA Public Key": "vM/iQI7/pNgGz6lvtI6TzQegGf2XOLfA1qF/UUWP33fhMhAMf4GRSOJmruKfOpClZgy8d4EH5nDffMSHLLCNtrR+dtN+DP25KSbfLihidE/SjbLI0hsotYZGCDBmkB8RgNy5kRipILXyv4cW0eYiLVm2e5VaCkdKBqotkaZ6t0ybzDTZn1t0o5nqHQOYtQRW", "c2_domain": ["api5.feen007.at/webstore"], "botnet": "3500", "server": "550", "serpent_key": "IpNvMMQa29KhBf3e", "sleep_time": "10", "CONF_TIMEOUT": "20", "SetWaitableTimer_value": "10", "dga_base_url": "constitution.org/usdeclar.txt", "dga_tld": "com ru org", "DGA_count": "10"}

Compliance:

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Uses 32bit PE files
Source: 50b0000.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Yara detected Ursnif
Source: Yara match File source: 50b0000.dll, type: SAMPLE

E-Banking Fraud:

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Yara detected Ursnif
Source: Yara match File source: 50b0000.dll, type: SAMPLE

System Summary:

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Uses 32bit PE files
Source: 50b0000.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL
PE file does not import any functions
Source: 50b0000.dll Static PE information: No import functions for PE file found
Tries to load missing DLLs
Source: C:\Windows\System32\loaddll32.exe Section loaded: .dll Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Section loaded: .dll Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Section loaded: .dll Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Section loaded: .dll Jump to behavior
Source: 50b0000.dll Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: classification engine Classification label: mal64.troj.winDLL@5/0@0/0
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe 'C:\Users\user\Desktop\50b0000.dll'
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1 Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1 Jump to behavior

Hooking and other Techniques for Hiding and Protection:

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Yara detected Ursnif
Source: Yara match File source: 50b0000.dll, type: SAMPLE
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected

Anti Debugging:

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Program does not show much activity (idle)
Source: all processes Thread injection, dropped files, key value created, disk infection and DNS query: no activity detected
Checks if the current process is being debugged
Source: C:\Windows\System32\loaddll32.exe Process queried: DebugPort Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

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Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\50b0000.dll',#1 Jump to behavior

Stealing of Sensitive Information:

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Yara detected Ursnif
Source: Yara match File source: 50b0000.dll, type: SAMPLE

Remote Access Functionality:

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Yara detected Ursnif
Source: Yara match File source: 50b0000.dll, type: SAMPLE
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 498827 Sample: 50b0000.dll Startdate: 07/10/2021 Architecture: WINDOWS Score: 64 13 Found malware configuration 2->13 15 Antivirus / Scanner detection for submitted sample 2->15 17 Yara detected  Ursnif 2->17 7 loaddll32.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        process5 11 rundll32.exe 9->11         started       
No contacted IP infos