Analysis Report 21a5f8d0000.dll

ID:	403758
Product:	CloudBasic
Start time:	11:41:53
Start date:	04.05.2021
Sample:	21a5f8d0000.dll
Cookbook:	default.jbs
System description:	Windows 10 64 bit v1803 with Office Professional Plus 2016, Chrome 85, IE 11, Adobe Reader DC 19, Java 8 Update 211
Architecture:	WINDOWS
MD5:	b8c176dc8ab0d768031014f95b8816e8
SHA1:	97826adb6aac6340a74ca024a65065fa6fdb21ca
SHA256:	cc79e66b24bfca1cd0ef27c63921737786dcdae02f871279800ea2c82939721a
Filetype:	Win64 Dynamic Link Library (generic) (102004/3) 84.88%

Name	Type	MD5	SHA1	SHA256
C:\Windows\ServiceProfiles\LocalService\AppData\Local\Temp\MpCmdRun.log	data	CE1CC265AB67E3C997C2BD8A51DE492A	90E8A24EC0C49E555721FDE5A4000E1FC5FC867E	E907A66E7EFFA5A9D710327C455CA0B3DD561E0146EA6F0B9A33682AC8CA4173

AV Detection:

Antivirus / Scanner detection for submitted sample

Source: 21a5f8d0000.dll

Avira: detected

Machine Learning detection for sample

Source: 21a5f8d0000.dll

Joe Sandbox ML: detected

Networking:

URLs found in memory or binary data

Source: 21a5f8d0000.dll	String found in binary or memory: http://constitution.org/usdeclar.txt
Source: 21a5f8d0000.dll	String found in binary or memory: http://constitution.org/usdeclar.txtC:
Source: 21a5f8d0000.dll	String found in binary or memory: http://https://file://USER.ID%lu.exe/upd

Key, Mouse, Clipboard, Microphone and Screen Capturing:

Yara detected Ursnif

Source: Yara match

File source: 21a5f8d0000.dll, type: SAMPLE

E-Banking Fraud:

Yara detected Ursnif

Source: Yara match

File source: 21a5f8d0000.dll, type: SAMPLE

System Summary:

PE file does not import any functions

Source: 21a5f8d0000.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

Classification label

Source: classification engine

Classification label: mal60.troj.winDLL@9/1@0/0

Creates mutexes

Source: C:\Windows\System32\conhost.exe

Mutant created: \BaseNamedObjects\Local\SM0:6596:120:WilError_01

PE file has an executable .text section and no other executable section

Source: 21a5f8d0000.dll

Static PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ

Reads software policies

Source: C:\Windows\System32\loaddll64.exe

Key opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers

Jump to behavior

Runs a DLL by calling functions

Source: C:\Windows\System32\loaddll64.exe

Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\21a5f8d0000.dll,#1

Spawns processes

Source: unknown	Process created: C:\Windows\System32\loaddll64.exe loaddll64.exe 'C:\Users\user\Desktop\21a5f8d0000.dll'
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\cmd.exe cmd.exe /C rundll32.exe 'C:\Users\user\Desktop\21a5f8d0000.dll',#1
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\21a5f8d0000.dll,#1
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\21a5f8d0000.dll',#1
Source: C:\Windows\System32\cmd.exe	Process created: C:\Program Files\Windows Defender\MpCmdRun.exe 'C:\Program Files\Windows Defender\mpcmdrun.exe' -wdenable
Source: C:\Program Files\Windows Defender\MpCmdRun.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\21a5f8d0000.dll',#1			Jump to behavior
Source: C:\Windows\System32\loaddll64.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe C:\Users\user\Desktop\21a5f8d0000.dll,#1			Jump to behavior
Source: C:\Windows\System32\cmd.exe	Process created: C:\Windows\System32\rundll32.exe rundll32.exe 'C:\Users\user\Desktop\21a5f8d0000.dll',#1			Jump to behavior

Found GUI installer (many successful clicks)

Source: C:\Windows\System32\rundll32.exe	Automated click: OK
Source: C:\Windows\System32\rundll32.exe	Automated click: OK

PE file has a high image base, often used for DLLs

Source: 21a5f8d0000.dll

Static PE information: Image base 0x180000000 > 0x60000000

Hooking and other Techniques for Hiding and Protection:

Yara detected Ursnif

Source: Yara match

File source: 21a5f8d0000.dll, type: SAMPLE

Disables application error messsages (SetErrorMode)

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:

Sample execution stops while process was sleeping (likely an evasion)

Source: C:\Windows\System32\conhost.exe

Last function: Thread delayed

May try to detect the virtual machine to hinder analysis (VM artifact strings found in memory)

Source: rundll32.exe, 00000002.00000002.246627027.00000195F9140000.00000002.00000001.sdmp, rundll32.exe, 00000003.00000002.239760036.000001A4AE6A0000.00000002.00000001.sdmp	Binary or memory string: A Virtual Machine could not be started because Hyper-V is not installed.
Source: rundll32.exe, 00000002.00000002.246627027.00000195F9140000.00000002.00000001.sdmp, rundll32.exe, 00000003.00000002.239760036.000001A4AE6A0000.00000002.00000001.sdmp	Binary or memory string: A communication protocol error has occurred between the Hyper-V Host and Guest Compute Service.
Source: rundll32.exe, 00000002.00000002.246627027.00000195F9140000.00000002.00000001.sdmp, rundll32.exe, 00000003.00000002.239760036.000001A4AE6A0000.00000002.00000001.sdmp	Binary or memory string: The communication protocol version between the Hyper-V Host and Guest Compute Services is not supported.
Source: rundll32.exe, 00000002.00000002.246627027.00000195F9140000.00000002.00000001.sdmp, rundll32.exe, 00000003.00000002.239760036.000001A4AE6A0000.00000002.00000001.sdmp	Binary or memory string: An unknown internal message was received by the Hyper-V Compute Service.

Anti Debugging:

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:

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\21a5f8d0000.dll',#1

Jump to behavior

Lowering of HIPS / PFW / Operating System Security Settings:

Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)

Source: C:\Windows\System32\cmd.exe	WMI Queries: IWbemServices::ExecNotificationQuery - ROOT\SecurityCenter : SELECT * FROM __InstanceOperationEvent WHERE TargetInstance ISA 'AntiVirusProduct' OR TargetInstance ISA 'FirewallProduct' OR TargetInstance ISA 'AntiSpywareProduct'
Source: C:\Windows\System32\cmd.exe	WMI Queries: IWbemServices::CreateInstanceEnum - ROOT\SecurityCenter2 : FirewallProduct
Source: C:\Windows\System32\cmd.exe	WMI Queries: IWbemServices::CreateInstanceEnum - ROOT\SecurityCenter2 : AntiVirusProduct
Source: C:\Windows\System32\cmd.exe	WMI Queries: IWbemServices::CreateInstanceEnum - ROOT\SecurityCenter2 : AntiSpywareProduct

Stealing of Sensitive Information:

Yara detected Ursnif

Source: Yara match

File source: 21a5f8d0000.dll, type: SAMPLE

Remote Access Functionality:

Yara detected Ursnif

Source: Yara match

File source: 21a5f8d0000.dll, type: SAMPLE