QuasarRat PE Executable malware analysis – d79c0edba38e

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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

Symbol obfuscation

Low

2 malicious · 4 files

EXEd79c0edba38e80603c5947a94e02c453QuasarRat

EXE[Rebuild from dump]_b06a3391.exeQuasarRat

BIN.Net Resources

Config. Field	Value
Conf. AES-Salt	BF-EB-huhuhuhuhuhuhuhuhuhuhu
Conf. AES-Key	B00073huhuhuhuhuhuhuhuhuhuhu
Version	1huhuhuhu
Port	4huhuhuhu
Host	185.huhuhuhuhuhuhu
ReconnectDelay	3huhuhuhu
SubDirectory	Suhuhuhuhu
InstallName	Clihuhuhuhu
Install	1huhuhuhu
Startup	1huhuhuhu
Mutex	c35578huhuhuhuhuhuhuhuhuhuhu
StartupKey	3dfxhuhuhuhu
HideFile	1huhuhuhu
EnableLogger	1huhuhuhu
Tag	4huhuhuhu
LogDirectory	Lhuhuhuhu
ServerSignature	ByDUofhuhuhuhuhuhuhuhuhuhuhu
ServerCertificate	MIIE9Dhuhuhuhuhuhuhuhuhuhuhu
HideLogDirectory	1huhuhuhu
HideLogSubdirectory	1huhuhuhu
UnattendedMod	1huhuhuhu

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 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::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	1.4.0.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.5.2
Total Strings	1552
Main Method	System.Void 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::Main(System.String[])
Main IL Instruction Count	19
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 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::⸂ﺿ赂ʏ봉糇㵂稹溪鮢싹慜�두㥾翼펰(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 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::쒗怡总蔺ퟯ輰웏⪹馟ꤔꞬ伍ꨉ㷵㑋欎䷽厭颃(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) newobj System.Void 鿼둼ߺ櫀䔐父渕⦗ㅑ�꣚஢諀剸髛솤::.ctor() call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form) ret <null>
Module Name	Client
Full Name	Client
EntryPoint	System.Void 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::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	1.4.0.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.5.2
Total Strings	1552
Main Method	System.Void 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::Main(System.String[])
Main IL Instruction Count	19
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 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::⸂ﺿ赂ʏ봉糇㵂稹溪鮢싹慜�두㥾翼펰(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 쩷蔭互漦눦ߵ搽✙ꂘ᫄৕壯㮙䷏ಘ萘㻈ó쯀::쒗怡总蔺ퟯ輰웏⪹馟ꤔꞬ伍ꨉ㷵㑋欎䷽厭颃(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) newobj System.Void 鿼둼ߺ櫀䔐父渕⦗ㅑ�꣚஢諀剸髛솤::.ctor() call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form) ret <null>

CnC CNCmalicious

185.huhuhuhuhuhuhu

Port PORTmalicious

4huhuhuhu

PE Layout UNKNWOWNsuspect

Memoryhuhuhuhuhuhuhuhuhuhuhu

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