Windows Analysis Report
viYcjIFhBz.dll

Overview

General Information

Sample name: viYcjIFhBz.dll
(renamed file extension from exe to dll, renamed because original name is a hash value)
Original sample name: 3313775ddd80cb904e3bf929a7d2c839e282b63a4f365d21d6caf2b225bf381b.exe
Analysis ID: 1522597
MD5: 48324a46181fd6b43b066c398a693fe0
SHA1: c4b295e058281f5ce730dd38c3316ef14b8dcabc
SHA256: 3313775ddd80cb904e3bf929a7d2c839e282b63a4f365d21d6caf2b225bf381b
Tags: exeRavinAcademyuser-JAMESWT_MHT
Infos:

Detection

Score: 60
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Found direct / indirect Syscall (likely to bypass EDR)
Creates a process in suspended mode (likely to inject code)
May sleep (evasive loops) to hinder dynamic analysis
Program does not show much activity (idle)
Sample execution stops while process was sleeping (likely an evasion)
Yara signature match

Classification

AV Detection
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Multi AV Scanner detection for submitted file
Source: viYcjIFhBz.dll ReversingLabs: Detection: 28%
Source: viYcjIFhBz.dll Virustotal: Detection: 37% Perma Link
Source: viYcjIFhBz.dll Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Source: Binary string: C:\Users\NEO\Desktop\RavinAcademy\RedTeam-01\09\03-ACG\x64\Release\EnableACG.pdb source: viYcjIFhBz.dll

System Summary
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Malicious sample detected (through community Yara rule)
Source: viYcjIFhBz.dll, type: SAMPLE Matched rule: Windows_Trojan_Donutloader_f40e3759 Author: unknown
Source: viYcjIFhBz.dll, type: SAMPLE Matched rule: Windows_Trojan_Donutloader_5c38878d Author: unknown
Source: 00000000.00000002.2148920564.000001A119050000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_f40e3759 Author: unknown
Source: 00000000.00000002.2148920564.000001A119050000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_5c38878d Author: unknown
Source: 00000003.00000002.2186246904.000001BA72F20000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_f40e3759 Author: unknown
Source: 00000003.00000002.2186246904.000001BA72F20000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_5c38878d Author: unknown
Yara signature match
Source: viYcjIFhBz.dll, type: SAMPLE Matched rule: Windows_Trojan_Donutloader_f40e3759 os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 6400b34f762cebb4f91a8d24c5fce647e069a971fb3ec923a63aa98c8cfffab7, id = f40e3759-2531-4e21-946a-fb55104814c0, last_modified = 2022-01-13
Source: viYcjIFhBz.dll, type: SAMPLE Matched rule: Windows_Trojan_Donutloader_5c38878d os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 3b55ec6c37891880b53633b936d10f94d2b806db1723875e4ac95f8a34d97150, id = 5c38878d-ca94-4fd9-a36e-1ae5fe713ca2, last_modified = 2021-01-13
Source: 00000000.00000002.2148920564.000001A119050000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_f40e3759 os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 6400b34f762cebb4f91a8d24c5fce647e069a971fb3ec923a63aa98c8cfffab7, id = f40e3759-2531-4e21-946a-fb55104814c0, last_modified = 2022-01-13
Source: 00000000.00000002.2148920564.000001A119050000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_5c38878d os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 3b55ec6c37891880b53633b936d10f94d2b806db1723875e4ac95f8a34d97150, id = 5c38878d-ca94-4fd9-a36e-1ae5fe713ca2, last_modified = 2021-01-13
Source: 00000003.00000002.2186246904.000001BA72F20000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_f40e3759 os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 6400b34f762cebb4f91a8d24c5fce647e069a971fb3ec923a63aa98c8cfffab7, id = f40e3759-2531-4e21-946a-fb55104814c0, last_modified = 2022-01-13
Source: 00000003.00000002.2186246904.000001BA72F20000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY Matched rule: Windows_Trojan_Donutloader_5c38878d os = windows, severity = x86, creation_date = 2021-09-15, scan_context = file, memory, license = Elastic License v2, threat_name = Windows.Trojan.Donutloader, fingerprint = 3b55ec6c37891880b53633b936d10f94d2b806db1723875e4ac95f8a34d97150, id = 5c38878d-ca94-4fd9-a36e-1ae5fe713ca2, last_modified = 2021-01-13
Source: viYcjIFhBz.dll Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: classification engine Classification label: mal60.evad.winDLL@6/0@0/0
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:1476:120:WilError_03
Source: viYcjIFhBz.dll Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, 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: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\viYcjIFhBz.dll",#1
Source: viYcjIFhBz.dll ReversingLabs: Detection: 28%
Source: viYcjIFhBz.dll Virustotal: Detection: 37%
Source: unknown Process created: C:\Windows\System32\loaddll64.exe loaddll64.exe "C:\Users\user\Desktop\viYcjIFhBz.dll"
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\viYcjIFhBz.dll",#1
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\viYcjIFhBz.dll",#1
Source: C:\Windows\System32\loaddll64.exe Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe "C:\Users\user\Desktop\viYcjIFhBz.dll",#1 Jump to behavior
Source: C:\Windows\System32\cmd.exe Process created: C:\Windows\System32\rundll32.exe rundll32.exe "C:\Users\user\Desktop\viYcjIFhBz.dll",#1 Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Section loaded: apphelp.dll Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Section loaded: vcruntime140.dll Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Section loaded: kernel.appcore.dll Jump to behavior
Source: viYcjIFhBz.dll Static PE information: Image base 0x180000000 > 0x60000000
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IMPORT
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_RESOURCE
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_BASERELOC
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_IAT
Source: viYcjIFhBz.dll Static PE information: HIGH_ENTROPY_VA, DYNAMIC_BASE, NX_COMPAT
Source: viYcjIFhBz.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: C:\Users\NEO\Desktop\RavinAcademy\RedTeam-01\09\03-ACG\x64\Release\EnableACG.pdb source: viYcjIFhBz.dll
Source: viYcjIFhBz.dll Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IMPORT is in: .rdata
Source: viYcjIFhBz.dll Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_RESOURCE is in: .rsrc
Source: viYcjIFhBz.dll Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_BASERELOC is in: .reloc
Source: viYcjIFhBz.dll Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG is in: .rdata
Source: viYcjIFhBz.dll Static PE information: Data directory: IMAGE_DIRECTORY_ENTRY_IAT is in: .rdata
Source: viYcjIFhBz.dll Static PE information: section name: .text entropy: 7.085181042380631
Source: C:\Windows\System32\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\System32\loaddll64.exe TID: 7016 Thread sleep time: -120000s >= -30000s Jump to behavior
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
Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\conhost.exe Last function: Thread delayed
Source: C:\Windows\System32\loaddll64.exe Thread delayed: delay time: 120000 Jump to behavior
Source: C:\Windows\System32\loaddll64.exe Process information queried: ProcessInformation Jump to behavior
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

HIPS / PFW / Operating System Protection Evasion
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Found direct / indirect Syscall (likely to bypass EDR)
Source: C:\Windows\System32\loaddll64.exe NtCreateThreadEx: Direct from: 0x7FFDA54E642F Jump to behavior
Source: C:\Windows\System32\loaddll64.exe NtMapViewOfSection: Direct from: 0x7FFDA54E63EF Jump to behavior
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\viYcjIFhBz.dll",#1 Jump to behavior
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Legend:

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  • 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: 1522597 Sample: viYcjIFhBz.exe Startdate: 30/09/2024 Architecture: WINDOWS Score: 60 16 Malicious sample detected (through community Yara rule) 2->16 18 Multi AV Scanner detection for submitted file 2->18 7 loaddll64.exe 1 2->7         started        process3 signatures4 20 Found direct / indirect Syscall (likely to bypass EDR) 7->20 10 cmd.exe 1 7->10         started        12 conhost.exe 7->12         started        process5 process6 14 rundll32.exe 10->14         started       
⊘No contacted IP infos