QuasarRat PE Executable malware analysis – dcbab6425d22

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File

Detection

PeID

.NET executableMicrosoft Visual C# / Basic .NETMicrosoft Visual C# / Basic.NET / MS Visual Basic 2005 - ASL Microsoft Visual C# v7.0 / Basic .NETMicrosoft Visual Studio .NET

2 malicious · 2 files

EXEdcbab6425d2251467b58f7366d91661fAsyncRAT

EXE[Rebuild from dump]_e0699fa9.exeAsyncRAT

Config. Field	Value
Conf. AES-Salt	BF-EB-huhuhuhuhuhuhuhuhuhuhu
Conf. AES-Key	D2973Fhuhuhuhuhuhuhuhuhuhuhu
Version	1huhuhuhu
Port	YovngMhuhuhuhuhuhuhuhuhuhuhu
Host	YovngMhuhuhuhuhuhuhuhuhuhuhu
ReconnectDelay	3huhuhuhu
Key	Suhuhuhuhu
SubDirectory	Clihuhuhuhu
InstallName	0huhuhuhu
Install	0huhuhuhu
Startup	f18561huhuhuhuhuhuhuhuhuhuhu
Mutex	Quasahuhuhuhuhuhuhu
StartupKey	0huhuhuhu
HideFile	0huhuhuhu
EnableLogger	vichuhuhuhu
EncryptionKey	Lhuhuhuhu

We extracted this malware's full configuration (C2, credentials, campaign IDs…).

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Config. Field	Value
Key (AES_256)	-huhuhuhu
Pastebin	-huhuhuhu
ServerSignature	fIPDA/huhuhuhuhuhuhuhuhuhuhu
Install File	Sbihuhuhuhu
Mutex	cmdvhuhuhuhu
Group	cmdvhuhuhuhu

We extracted this malware's full configuration (C2, credentials, campaign IDs…).

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Name	Value
Module Name	Client
Full Name	Client
EntryPoint	System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::Main(System.String[])
Scope Name	Client
Scope Type	ModuleDef
Kind	Windows
Runtime Version	v4.0.30319
Tables Header Version	512
WinMD Version	<null>
Assembly Name	Client
Assembly Version	1.7.1.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.8
Total Strings	1957
Main Method	System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::Main(System.String[])
Main IL Instruction Count	20
Main IL	ldc.i4 3072 call System.Void System.Net.ServicePointManager::set_SecurityProtocol(System.Net.SecurityProtocolType) ldc.i4.2 <null> call System.Void System.Windows.Forms.Application::SetUnhandledExceptionMode(System.Windows.Forms.UnhandledExceptionMode) ldnull <null> ldftn System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::䘏뒼핵慘톢䆫嵏籴罅ᦤ篐좔ࡰ暗䲌ᱽⱓ驆螷奈(System.Object,System.Threading.ThreadExceptionEventArgs) newobj System.Void System.Threading.ThreadExceptionEventHandler::.ctor(System.Object,System.IntPtr) call System.Void System.Windows.Forms.Application::add_ThreadException(System.Threading.ThreadExceptionEventHandler) call System.AppDomain System.AppDomain::get_CurrentDomain() ldnull <null> ldftn System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::㒸춖쇤锍궣籈λ苺쁩뺰꬙㢁쓈啿㗾ዬ곺킨卙跃(System.Object,System.UnhandledExceptionEventArgs) newobj System.Void System.UnhandledExceptionEventHandler::.ctor(System.Object,System.IntPtr) callvirt System.Void System.AppDomain::add_UnhandledException(System.UnhandledExceptionEventHandler) call System.Void System.Windows.Forms.Application::EnableVisualStyles() ldc.i4.0 <null> call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean) call System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::령㝯곂蒜騲ᰠꄕ總਋癝᰽蓻훞꽂ꇯ改ṧ() newobj System.Void yhmrkitgwiwmffbmaorv.ﴯ䒞ꑇ軨괸脁㌪뽊⬌Ɤ≳䀑옣諿淒擤㳲::.ctor() call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form) ret <null>
Module Name	Client
Full Name	Client
EntryPoint	System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::Main(System.String[])
Scope Name	Client
Scope Type	ModuleDef
Kind	Windows
Runtime Version	v4.0.30319
Tables Header Version	512
WinMD Version	<null>
Assembly Name	Client
Assembly Version	1.7.1.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.8
Total Strings	1957
Main Method	System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::Main(System.String[])
Main IL Instruction Count	20
Main IL	ldc.i4 3072 call System.Void System.Net.ServicePointManager::set_SecurityProtocol(System.Net.SecurityProtocolType) ldc.i4.2 <null> call System.Void System.Windows.Forms.Application::SetUnhandledExceptionMode(System.Windows.Forms.UnhandledExceptionMode) ldnull <null> ldftn System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::䘏뒼핵慘톢䆫嵏籴罅ᦤ篐좔ࡰ暗䲌ᱽⱓ驆螷奈(System.Object,System.Threading.ThreadExceptionEventArgs) newobj System.Void System.Threading.ThreadExceptionEventHandler::.ctor(System.Object,System.IntPtr) call System.Void System.Windows.Forms.Application::add_ThreadException(System.Threading.ThreadExceptionEventHandler) call System.AppDomain System.AppDomain::get_CurrentDomain() ldnull <null> ldftn System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::㒸춖쇤锍궣籈λ苺쁩뺰꬙㢁쓈啿㗾ዬ곺킨卙跃(System.Object,System.UnhandledExceptionEventArgs) newobj System.Void System.UnhandledExceptionEventHandler::.ctor(System.Object,System.IntPtr) callvirt System.Void System.AppDomain::add_UnhandledException(System.UnhandledExceptionEventHandler) call System.Void System.Windows.Forms.Application::EnableVisualStyles() ldc.i4.0 <null> call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean) call System.Void yhmrkitgwiwmffbmaorv.ヂ賣֭䢷㝾ᅲ੘ώ몇嗠㠦㖡ˆꯤ湩숿䦯::령㝯곂蒜騲ᰠꄕ總਋癝᰽蓻훞꽂ꇯ改ṧ() newobj System.Void yhmrkitgwiwmffbmaorv.ﴯ䒞ꑇ軨괸脁㌪뽊⬌Ɤ≳䀑옣諿淒擤㳲::.ctor() call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form) ret <null>

CnC CNCmalicious

YovngMhuhuhuhuhuhuhuhuhuhuhu

Port PORTmalicious

YovngMhuhuhuhuhuhuhuhuhuhuhu

Key (AES_256) MUTEXmalicious

-huhuhuhu

Mutex MUTEXmalicious

cmdvhuhuhuhu

PE Layout UNKNWOWNsuspect

Memoryhuhuhuhuhuhuhuhuhuhuhu

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