njRat PE Executable malware analysis – f747ae721dcd

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File

Detection

Symbol obfuscation

Low

1 malicious · 3 files

EXEf747ae721dcdcbf06aedaa75a896563eDcRat

Structure

BINResources

Config. Field	Value
Key (AES_256)	T3owSEhuhuhuhuhuhuhuhuhuhuhu
Ports	8huhuhuhu
Hosts	157.huhuhuhuhuhuhu
Version	1huhuhuhu
Install	thuhuhuhu
Install-Folder	%Thuhuhuhu
Install File	Microshuhuhuhuhuhuhuhuhuhuhu
Mutex	Microshuhuhuhuhuhuhuhuhuhuhu
Certificate	MIICMDhuhuhuhuhuhuhuhuhuhuhu
ServerSignature	d306b0huhuhuhuhuhuhuhuhuhuhu
Anti-VM	nhuhuhuhu
PasteBin	fhuhuhuhu
BDOS	1huhuhuhu
Delay	Dehuhuhuhu
Group	fhuhuhuhu

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

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Name	Value
Module Name	Microsoft.ServiceHub.Controller.exe
Full Name	Microsoft.ServiceHub.Controller.exe
EntryPoint	System.Void Client.Program::Main()
Scope Name	Microsoft.ServiceHub.Controller.exe
Scope Type	ModuleDef
Kind	Windows
Runtime Version	v4.0.30319
Tables Header Version	512
WinMD Version	<null>
Assembly Name	Microsoft.ServiceHub.Controller
Assembly Version	1.0.7.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.0
Total Strings	157
Main Method	System.Void Client.Program::Main()
Main IL Instruction Count	77
Main IL	ldc.i4.0 <null> stloc.0 <null> br IL_0015: ldloc.0 ldc.i4 1000 call System.Void System.Threading.Thread::Sleep(System.Int32) ldloc.0 <null> ldc.i4.1 <null> add <null> stloc.0 <null> ldloc.0 <null> ldsfld System.String Client.Settings::De_lay call System.Int32 System.Convert::ToInt32(System.String) blt.s IL_0007: ldc.i4 1000 call System.Boolean Client.Settings::InitializeSettings() brtrue IL_0032: nop ldc.i4.0 <null> call System.Void System.Environment::Exit(System.Int32) nop <null> ldsfld System.String Client.Settings::An_ti call System.Boolean System.Convert::ToBoolean(System.String) brfalse IL_0047: leave IL_0052 call System.Void Client.Helper.Anti_Analysis::RunAntiAnalysis() leave IL_0052: call System.Void Client.Helper.A::B() pop <null> leave IL_0052: call System.Void Client.Helper.A::B() call System.Void Client.Helper.A::B() call System.Boolean Client.Helper.MutexControl::CreateMutex() brtrue IL_0067: leave IL_0072 ldc.i4.0 <null> call System.Void System.Environment::Exit(System.Int32) leave IL_0072: nop pop <null> leave IL_0072: nop nop <null> ldsfld System.String Client.Settings::Anti_Process call System.Boolean System.Convert::ToBoolean(System.String) brfalse IL_0087: leave IL_0092 call System.Void Client.Helper.AntiProcess::StartBlock() leave IL_0092: nop pop <null> leave IL_0092: nop nop <null> ldsfld System.String Client.Settings::BS_OD call System.Boolean System.Convert::ToBoolean(System.String) brfalse IL_00B1: leave IL_00BC call System.Boolean Client.Helper.Methods::IsAdmin() brfalse IL_00B1: leave IL_00BC call System.Void Client.Helper.ProcessCritical::Set() leave IL_00BC: nop pop <null> leave IL_00BC: nop nop <null> ldsfld System.String Client.Settings::In_stall call System.Boolean System.Convert::ToBoolean(System.String) brfalse IL_00D1: leave IL_00DC call System.Void Client.Install.NormalStartup::Install() leave IL_00DC: call System.Void Client.Helper.Methods::PreventSleep() pop <null> leave IL_00DC: call System.Void Client.Helper.Methods::PreventSleep() call System.Void Client.Helper.Methods::PreventSleep() call System.Boolean Client.Helper.Methods::IsAdmin() brfalse IL_00F0: leave IL_00FB call System.Void Client.Helper.Methods::ClearSetting() leave IL_00FB: nop pop <null> leave IL_00FB: nop nop <null> call System.Boolean Client.Connection.ClientSocket::get_IsConnected() brtrue IL_0110: leave IL_011B call System.Void Client.Connection.ClientSocket::Reconnect() call System.Void Client.Connection.ClientSocket::InitializeClient() leave IL_011B: ldc.i4 5000 pop <null> leave IL_011B: ldc.i4 5000 ldc.i4 5000 call System.Void System.Threading.Thread::Sleep(System.Int32) br.s IL_00FB: nop

Key (AES_256) MUTEXmalicious

T3owSEhuhuhuhuhuhuhuhuhuhuhu

Ports PORTmalicious

8huhuhuhu

CnC CNCmalicious

157.huhuhuhuhuhuhu

Mutex MUTEXmalicious

Microshuhuhuhuhuhuhuhuhuhuhu

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