Windows Analysis Report 28b452d0000.dll

Overview

General Information

Sample Name: 28b452d0000.dll
Analysis ID: 524446
MD5: 45d602c1878edac953ecfae4c1e059fe
SHA1: 2f9606697894ee86d605cd4abafb74b60fed676b
SHA256: c621297f4361a727f803ad31bfb7388f45af5a9e5c7b6237d1492c23e1f8991f
Tags: exegozi
Infos:

Most interesting Screenshot:

Detection

Ursnif
Score: 56
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Found malware configuration
Yara detected Ursnif
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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Found malware configuration
Source: 28b452d0000.dll Malware Configuration Extractor: Ursnif {"RSA Public Key": "YOKfuXyqdgHv95/1BC89q+2AtY47vYuaG5OtZJ8d6O6ochD7W6siPV2JrKeda84QkxbQO+VVfipAiJGPSLyuH5PBTp1YXEqe08AR6gPZo6msmG0AdzSZu04lMBJ6s9dvrfX21tvvbQCrAm9rEoH2LTGMGxwb6GrRlYPojaXCgymjHF8+Wxs+ywNU1vDh20U5572KvOpHGtuDRZW9YnPHdsBHMITSJSbHFvMPwL6X4nog3m+qn/5iuA2C1SS5z5hMdEXbPPoNMy/yM43jrMrHJvwhw/1S/Bic2SpzCRK1QjeERTBPIZgKrE7S6grdequ0fzjD0bO1k1U5WZrLvAlUH/of13KSH7yIqc66k8zdL1k=", "c2_domain": ["art.microsoftsofymicrosoftsoft.at", "r23cirt55ysvtdvl.onion", "fop.langoonik.com", "poi.redhatbabby.at", "pop.biopiof.at", "l46t3vgvmtx5wxe6.onion", "v10.avyanok.com", "apr.intoolkom.at", "fgx.dangerboy.at"], "ip_check_url": ["curlmyip.net", "ident.me", "l2.io/ip", "whatismyip.akamai.com"], "serpent_key": "rQH4gusjF0tL2dQz", "server": "580", "sleep_time": "5", "SetWaitableTimer_value(CRC_CONFIGTIMEOUT)": "600", "time_value": "600", "SetWaitableTimer_value(CRC_TASKTIMEOUT)": "240", "SetWaitableTimer_value(CRC_SENDTIMEOUT)": "300", "SetWaitableTimer_value(CRC_KNOCKERTIMEOUT)": "240", "not_use(CRC_BCTIMEOUT)": "10", "botnet": "2500", "SetWaitableTimer_value": "60"}

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Yara detected Ursnif
Source: Yara match File source: 28b452d0000.dll, type: SAMPLE

E-Banking Fraud:

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Yara detected Ursnif
Source: Yara match File source: 28b452d0000.dll, type: SAMPLE

System Summary:

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PE file does not import any functions
Source: 28b452d0000.dll Static PE information: No import functions for PE file found
Tries to load missing DLLs
Source: C:\Windows\System32\loaddll64.exe Section loaded: .dll Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Section loaded: .dll Jump to behavior
Source: 28b452d0000.dll Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Windows\System32\loaddll64.exe Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: classification engine Classification label: mal56.troj.winDLL@7/0@0/0
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\28b452d0000.dll,#1
Source: unknown Process created: C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\28b452d0000.dll"
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\28b452d0000.dll",#1
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\28b452d0000.dll,#1
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\28b452d0000.dll",#1
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\28b452d0000.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\28b452d0000.dll,#1 Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\28b452d0000.dll",#1 Jump to behavior
Source: C:\Windows\System32\rundll32.exe Automated click: OK
Source: C:\Windows\System32\rundll32.exe Automated click: OK
Source: 28b452d0000.dll Static PE information: Image base 0x180000000 > 0x60000000

Hooking and other Techniques for Hiding and Protection:

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Yara detected Ursnif
Source: Yara match File source: 28b452d0000.dll, type: SAMPLE
Source: C:\Windows\System32\cmd.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\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\loaddll64.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\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\28b452d0000.dll",#1 Jump to behavior

Stealing of Sensitive Information:

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Yara detected Ursnif
Source: Yara match File source: 28b452d0000.dll, type: SAMPLE

Remote Access Functionality:

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Yara detected Ursnif
Source: Yara match File source: 28b452d0000.dll, type: SAMPLE
windows-stand
Hide Legend

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: 524446 Sample: 28b452d0000.dll Startdate: 18/11/2021 Architecture: WINDOWS Score: 56 15 Found malware configuration 2->15 17 Yara detected  Ursnif 2->17 7 loaddll64.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        11 rundll32.exe 7->11         started        process5 13 rundll32.exe 9->13         started       
No contacted IP infos