Windows Analysis Report d7b.dll

Overview

General Information

Sample Name: d7b.dll
Analysis ID: 446419
MD5: d7b3fe9b94d3896df9d9f77b37adbf37
SHA1: 6b71978633aa2f91c15ef48eaf3cc4dd54ea7dd0
SHA256: f7a1ecdd925fd1e03ff08f547b24a10e64a5996060feab65e77f6ca0339b6a00
Tags: dllgozi
Infos:

Most interesting Screenshot:

Detection

Ursnif
Score: 88
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected Ursnif
Machine Learning detection for sample
Performs DNS queries to domains with low reputation
Writes or reads registry keys via WMI
Writes registry values via WMI
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query CPU information (cpuid)
Contains functionality to read the PEB
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Internet Provider seen in connection with other malware
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Sample execution stops while process was sleeping (likely an evasion)
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)

Classification

AV Detection:

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Antivirus / Scanner detection for submitted sample
Source: d7b.dll Avira: detected
Multi AV Scanner detection for submitted file
Source: d7b.dll Metadefender: Detection: 37% Perma Link
Source: d7b.dll ReversingLabs: Detection: 62%
Machine Learning detection for sample
Source: d7b.dll Joe Sandbox ML: detected

Compliance:

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Uses 32bit PE files
Source: d7b.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe File opened: C:\Program Files (x86)\Java\jre1.8.0_211\bin\msvcr100.dll Jump to behavior
Source: d7b.dll Static PE information: DYNAMIC_BASE, NX_COMPAT
Source: Binary string: c:\Paint\Baby\String\Felt\beauty\little\mindclock.pdb source: loaddll32.exe, 00000000.00000002.596728829.000000006D989000.00000002.00020000.sdmp, rundll32.exe, 00000004.00000002.597761911.000000006D989000.00000002.00020000.sdmp, d7b.dll

Networking:

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Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Source: Traffic Snort IDS: 2033203 ET TROJAN Ursnif Variant CnC Beacon - URI Struct M1 (_2B) 192.168.2.6:49724 -> 172.217.168.78:80
Performs DNS queries to domains with low reputation
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe DNS query: ooakieyrc.xyz
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe DNS query: ooakieyrc.xyz
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe DNS query: ooakieyrc.xyz
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe DNS query: ooakieyrc.xyz
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: DIGITALOCEAN-ASNUS DIGITALOCEAN-ASNUS
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown TCP traffic detected without corresponding DNS query: 81.92.202.190
Source: unknown DNS traffic detected: queries for: ooakieyrc.xyz
Source: {73AF0670-E104-11EB-90E5-ECF4BB2D2496}.dat.27.dr String found in binary or memory: http://81.92.202.190/images/6_2Bfi3b1BN36VCLTJu/7xXAKaMrEwHuufQ0qCrZ8t/2MLMlwG9w9jdT/PNPs5keC/50Od9L
Source: {73AF066E-E104-11EB-90E5-ECF4BB2D2496}.dat.27.dr String found in binary or memory: http://81.92.202.190/images/Rv8GrTLYptzSKPZ/L4_2FdPuwtqV2xQNJp/z_2FfwkAJ/Fv_2BGyCrahYt_2FNGpY/ghlbjT
Source: {4867C43C-E104-11EB-90E5-ECF4BB2D2496}.dat.9.dr String found in binary or memory: http://google.com/images/D2C5vfrSqC9/0QY2E5fyBElqGL/KexG_2Fvw2ZjPL7Hw1vAC/yIiJSAPDJ0pvzm0m/gq5wu0ciS
Source: ~DF9E247E5B8AC6418E.TMP.9.dr, {4867C43E-E104-11EB-90E5-ECF4BB2D2496}.dat.9.dr String found in binary or memory: http://google.com/images/nEH4fv80NMb6jmWf42s/yWPosL9TmLhv46sbdsSAla/6VrnHflFUDDQp/Fat6z6l3/7LJBcgRPk
Source: {6381B6B0-E104-11EB-90E5-ECF4BB2D2496}.dat.21.dr String found in binary or memory: http://ooakieyrc.xyz/images/7kc3AOalDAVrSC/miBJwAGiWQLur4VkluCOz/xRVn0UZ3CFv16_2B/wOU1EGTVWcgl78r/3l
Source: {6381B6AE-E104-11EB-90E5-ECF4BB2D2496}.dat.21.dr String found in binary or memory: http://ooakieyrc.xyz/images/X1oZp6Zj_2FwjdZ/GmHjDHWSzeA_2FTY8s/I0hYASmbJ/uk7yqg3FxgKimKg4iEaQ/oRj2iH

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.384867126.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386739440.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384991598.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386787805.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000002.596356802.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384681414.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386833228.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385026148.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385049727.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385084591.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386804155.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386611964.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384965086.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385068995.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.594418378.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386843346.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386704666.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386554114.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 6136, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5604, type: MEMORY

E-Banking Fraud:

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Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.384867126.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386739440.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384991598.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386787805.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000002.596356802.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384681414.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386833228.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385026148.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385049727.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385084591.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386804155.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386611964.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384965086.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385068995.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.594418378.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386843346.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386704666.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386554114.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 6136, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5604, type: MEMORY

System Summary:

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Writes or reads registry keys via WMI
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\System32\loaddll32.exe WMI Queries: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Writes registry values via WMI
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\System32\loaddll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetDWORDValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetBinaryValue
Source: C:\Windows\SysWOW64\rundll32.exe WMI Registry write: IWbemServices::ExecMethod - root\default : StdRegProv::SetStringValue
Contains functionality to call native functions
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D9722C9 NtQueryVirtualMemory,LdrInitializeThunk, 0_2_6D9722C9
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E84F66 NtOpenProcess,NtOpenProcessToken,NtQueryInformationToken,NtQueryInformationToken,memcpy,NtClose,NtClose, 0_2_00E84F66
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012B4F66 NtOpenProcess,NtOpenProcessToken,NtQueryInformationToken,NtQueryInformationToken,memcpy,NtClose,NtClose, 3_2_012B4F66
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_01374F66 NtOpenProcess,NtOpenProcessToken,NtQueryInformationToken,NtQueryInformationToken,memcpy,NtClose,NtClose, 4_2_01374F66
Detected potential crypto function
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D9720A8 0_2_6D9720A8
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E8A29C 0_2_00E8A29C
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E8541A 0_2_00E8541A
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012B541A 3_2_012B541A
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012BA29C 3_2_012BA29C
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_0137541A 4_2_0137541A
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_0137A29C 4_2_0137A29C
Uses 32bit PE files
Source: d7b.dll Static PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE, DLL
Source: d7b.dll Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: classification engine Classification label: mal88.troj.winDLL@22/43@4/2
Source: C:\Program Files\internet explorer\iexplore.exe File created: C:\Users\user\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{4867C43A-E104-11EB-90E5-ECF4BB2D2496}.dat Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe File created: C:\Users\user\AppData\Local\Temp\~DFCC73204E5D3290B9.TMP Jump to behavior
Source: d7b.dll Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
Source: C:\Program Files\internet explorer\iexplore.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\d7b.dll,Moleculenotice
Source: d7b.dll Metadefender: Detection: 37%
Source: d7b.dll ReversingLabs: Detection: 62%
Source: unknown Process created: C:\Windows\System32\loaddll32.exe loaddll32.exe 'C:\Users\user\Desktop\d7b.dll'
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\d7b.dll',#1
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\d7b.dll,Moleculenotice
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\d7b.dll',#1
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5640 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5640 CREDAT:17414 /prefetch:2
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:7080 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:7080 CREDAT:17414 /prefetch:2
Source: unknown Process created: C:\Program Files\internet explorer\iexplore.exe 'C:\Program Files\Internet Explorer\iexplore.exe' -Embedding
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5248 CREDAT:17410 /prefetch:2
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5248 CREDAT:17414 /prefetch:2
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\d7b.dll',#1 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe C:\Users\user\Desktop\d7b.dll,Moleculenotice Jump to behavior
Source: C:\Windows\SysWOW64\cmd.exe Process created: C:\Windows\SysWOW64\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\d7b.dll',#1 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5640 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5640 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:7080 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:7080 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5248 CREDAT:17410 /prefetch:2 Jump to behavior
Source: C:\Program Files\internet explorer\iexplore.exe Process created: C:\Program Files (x86)\Internet Explorer\iexplore.exe 'C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE' SCODEF:5248 CREDAT:17414 /prefetch:2 Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4590F811-1D3A-11D0-891F-00AA004B2E24}\InprocServer32 Jump to behavior
Source: Window Recorder Window detected: More than 3 window changes detected
Source: C:\Program Files (x86)\Internet Explorer\iexplore.exe File opened: C:\Program Files (x86)\Java\jre1.8.0_211\bin\msvcr100.dll Jump to behavior
Source: d7b.dll Static PE information: DYNAMIC_BASE, NX_COMPAT
Source: d7b.dll Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: c:\Paint\Baby\String\Felt\beauty\little\mindclock.pdb source: loaddll32.exe, 00000000.00000002.596728829.000000006D989000.00000002.00020000.sdmp, rundll32.exe, 00000004.00000002.597761911.000000006D989000.00000002.00020000.sdmp, d7b.dll

Data Obfuscation:

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Uses code obfuscation techniques (call, push, ret)
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D972097 push ecx; ret 0_2_6D9720A7
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D972050 push ecx; ret 0_2_6D972059
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E8A28B push ecx; ret 0_2_00E8A29B
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E89E40 push ecx; ret 0_2_00E89E49
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D9819AB pushad ; iretd 0_2_6D9819AE
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D9809D7 push ebp; iretd 0_2_6D9809F2
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D980093 pushad ; ret 0_2_6D9800A8
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D981009 push ecx; retf 0_2_6D981086
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D981055 push ecx; retf 0_2_6D981086
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D9857C5 push ecx; ret 0_2_6D9857D8
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D980204 pushad ; retf 0_2_6D980222
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D981278 pushad ; retn 0048h 0_2_6D981279
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012B9E40 push ecx; ret 3_2_012B9E49
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012BA28B push ecx; ret 3_2_012BA29B
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_01379E40 push ecx; ret 4_2_01379E49
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_0137A28B push ecx; ret 4_2_0137A29B
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D9819AB pushad ; iretd 4_2_6D9819AE
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D9809D7 push ebp; iretd 4_2_6D9809F2
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D980093 pushad ; ret 4_2_6D9800A8
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D981009 push ecx; retf 4_2_6D981086
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D981055 push ecx; retf 4_2_6D981086
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D9857C5 push ecx; ret 4_2_6D9857D8
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D980204 pushad ; retf 4_2_6D980222
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D981278 pushad ; retn 0048h 4_2_6D981279
Source: initial sample Static PE information: section name: .text entropy: 6.99787070557

Hooking and other Techniques for Hiding and Protection:

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Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.384867126.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386739440.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384991598.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386787805.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000002.596356802.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384681414.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386833228.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385026148.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385049727.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385084591.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386804155.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386611964.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384965086.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385068995.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.594418378.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386843346.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386704666.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386554114.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 6136, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5604, type: MEMORY
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Source: C:\Windows\System32\loaddll32.exe Registry key monitored for changes: HKEY_CURRENT_USER_Classes Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\loaddll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\SysWOW64\rundll32.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Sample execution stops while process was sleeping (likely an evasion)
Source: C:\Windows\System32\loaddll32.exe Last function: Thread delayed
Source: C:\Windows\System32\loaddll32.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\rundll32.exe Last function: Thread delayed
Source: C:\Windows\SysWOW64\rundll32.exe Last function: Thread delayed
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D983A00 GetProcessHeap,RtlAllocateHeap,GetTempPathA,GetSystemInfo,CreateSemaphoreA, 0_2_6D983A00

Anti Debugging:

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Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D971D28 LdrInitializeThunk, 0_2_6D971D28
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D983D72 IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter,GetCurrentProcess,TerminateProcess, 0_2_6D983D72
Contains functionality to read the PEB
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D999212 mov eax, dword ptr fs:[00000030h] 0_2_6D999212
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D998D5E push dword ptr fs:[00000030h] 0_2_6D998D5E
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D999148 mov eax, dword ptr fs:[00000030h] 0_2_6D999148
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D999212 mov eax, dword ptr fs:[00000030h] 4_2_6D999212
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D998D5E push dword ptr fs:[00000030h] 4_2_6D998D5E
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D999148 mov eax, dword ptr fs:[00000030h] 4_2_6D999148
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D983A00 GetProcessHeap,RtlAllocateHeap,GetTempPathA,GetSystemInfo,CreateSemaphoreA, 0_2_6D983A00
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D97137F InitializeCriticalSection,TlsAlloc,RtlAddVectoredExceptionHandler,GetLastError, 0_2_6D97137F
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E82DF4 RtlInitializeCriticalSection,TlsAlloc,RtlAddVectoredExceptionHandler,GetLastError, 0_2_00E82DF4
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D983D72 IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter,GetCurrentProcess,TerminateProcess, 0_2_6D983D72
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D985B8B _memset,IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 0_2_6D985B8B
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 3_2_012B2DF4 RtlInitializeCriticalSection,TlsAlloc,RtlAddVectoredExceptionHandler,GetLastError, 3_2_012B2DF4
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_01372DF4 RtlInitializeCriticalSection,TlsAlloc,RtlAddVectoredExceptionHandler,GetLastError, 4_2_01372DF4
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D983D72 IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter,GetCurrentProcess,TerminateProcess, 4_2_6D983D72
Source: C:\Windows\SysWOW64\rundll32.exe Code function: 4_2_6D985B8B _memset,IsDebuggerPresent,SetUnhandledExceptionFilter,UnhandledExceptionFilter, 4_2_6D985B8B

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\d7b.dll',#1 Jump to behavior
Source: loaddll32.exe, 00000000.00000002.593648567.0000000001560000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.595719473.0000000003560000.00000002.00000001.sdmp Binary or memory string: Shell_TrayWnd
Source: loaddll32.exe, 00000000.00000002.593648567.0000000001560000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.595719473.0000000003560000.00000002.00000001.sdmp Binary or memory string: Progman
Source: loaddll32.exe, 00000000.00000002.593648567.0000000001560000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.595719473.0000000003560000.00000002.00000001.sdmp Binary or memory string: &Program Manager
Source: loaddll32.exe, 00000000.00000002.593648567.0000000001560000.00000002.00000001.sdmp, rundll32.exe, 00000004.00000002.595719473.0000000003560000.00000002.00000001.sdmp Binary or memory string: Progmanlock

Language, Device and Operating System Detection:

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Contains functionality to query CPU information (cpuid)
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E86E5B cpuid 0_2_00E86E5B
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E82B9E GetSystemTimeAsFileTime,HeapFree, 0_2_00E82B9E
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_00E86E5B GetUserNameW,RtlAllocateHeap,HeapFree,GetComputerNameW,RtlAllocateHeap,GetComputerNameW,HeapFree, 0_2_00E86E5B
Source: C:\Windows\System32\loaddll32.exe Code function: 0_2_6D971A98 CreateEventA,GetVersion,GetCurrentProcessId,OpenProcess,GetLastError, 0_2_6D971A98

Stealing of Sensitive Information:

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Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.384867126.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386739440.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384991598.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386787805.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000002.596356802.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384681414.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386833228.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385026148.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385049727.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385084591.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386804155.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386611964.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384965086.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385068995.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.594418378.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386843346.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386704666.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386554114.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 6136, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5604, type: MEMORY

Remote Access Functionality:

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Yara detected Ursnif
Source: Yara match File source: 00000004.00000003.384867126.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386739440.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384991598.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386787805.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000002.596356802.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384681414.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386833228.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385026148.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385049727.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385084591.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386804155.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386611964.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.384965086.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000004.00000003.385068995.0000000005308000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000002.594418378.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386843346.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386704666.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: 00000000.00000003.386554114.0000000003458000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: rundll32.exe PID: 6136, type: MEMORY
Source: Yara match File source: Process Memory Space: loaddll32.exe PID: 5604, type: MEMORY
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: 446419 Sample: d7b.dll Startdate: 09/07/2021 Architecture: WINDOWS Score: 88 42 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->42 44 Antivirus / Scanner detection for submitted sample 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 3 other signatures 2->48 7 loaddll32.exe 1 2->7         started        10 iexplore.exe 1 53 2->10         started        12 iexplore.exe 1 53 2->12         started        14 iexplore.exe 1 54 2->14         started        process3 signatures4 50 Writes or reads registry keys via WMI 7->50 52 Writes registry values via WMI 7->52 16 rundll32.exe 7->16         started        19 cmd.exe 1 7->19         started        21 iexplore.exe 33 10->21         started        24 iexplore.exe 29 10->24         started        26 iexplore.exe 12->26         started        28 iexplore.exe 12->28         started        30 iexplore.exe 28 14->30         started        32 iexplore.exe 26 14->32         started        process5 dnsIp6 40 Writes registry values via WMI 16->40 34 rundll32.exe 19->34         started        36 ooakieyrc.xyz 139.59.150.28, 49746, 49747, 49748 DIGITALOCEAN-ASNUS Singapore 21->36 38 81.92.202.190, 80 M247GB United Kingdom 26->38 signatures7 process8
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
81.92.202.190
 unknown United Kingdom
9009 M247GB false
139.59.150.28
 ooakieyrc.xyz Singapore
14061 DIGITALOCEAN-ASNUS true

Contacted Domains

Name IP Active
ooakieyrc.xyz 139.59.150.28 true