Malicious
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PE Executable
MD5:
Size: 0 B
application/x-dosexec
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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
1 malicious · 3 files
EXEb812092480bbf77b7fabfb653ab7e057njRat
Structure
Config. Field Value
Key (AES_256) a1lxNWhuhuhuhuhuhuhuhuhuhuhu
Pastebin -huhuhuhu
Certificate MIIE8jhuhuhuhuhuhuhuhuhuhuhu
ServerSignature dYM1H1huhuhuhuhuhuhuhuhuhuhu
Install thuhuhuhu
BDOS fhuhuhuhu
Anti-VM fhuhuhuhu
Install File tikhuhuhuhu
Install-Folder %Aphuhuhuhu
Version 0.huhuhuhu
Hosts Myfilhuhuhuhuhuhuhu
Ports 6606huhuhuhuhuhuhu
Mutex kqlhuhuhuhu
Delay 4huhuhuhu
Group Dehuhuhuhu
We extracted this malware's full configuration (C2, credentials, campaign IDs…).
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Name Value
Module Name
AsyncClient.exe
Full Name
AsyncClient.exe
EntryPoint
System.Void Client.Program::Main()
Scope Name
AsyncClient.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
AsyncClient
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.0,Profile=Client
Total Strings
121
Main Method
System.Void Client.Program::Main()
Main IL Instruction Count
50
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::Delay
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>
call System.Boolean Client.Helper.MutexControl::CreateMutex()
brtrue IL_0043: ldsfld System.String Client.Settings::Anti
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Client.Settings::Anti
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0057: ldsfld System.String Client.Settings::Install
call System.Void Client.Helper.Anti_Analysis::RunAntiAnalysis()
ldsfld System.String Client.Settings::Install
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_006B: ldsfld System.String Client.Settings::BDOS
call System.Void Client.Install.NormalStartup::Install()
ldsfld System.String Client.Settings::BDOS
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0089: call System.Void Client.Helper.Methods::PreventSleep()
call System.Boolean Client.Helper.Methods::IsAdmin()
brfalse IL_0089: call System.Void Client.Helper.Methods::PreventSleep()
call System.Void Client.Helper.ProcessCritical::Set()
call System.Void Client.Helper.Methods::PreventSleep()
leave IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
pop <null>
leave IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
brtrue IL_00AD: newobj System.Void System.Random::.ctor()
call System.Void Client.Connection.ClientSocket::Reconnect()
call System.Void Client.Connection.ClientSocket::InitializeClient()
newobj System.Void System.Random::.ctor()
ldc.i4 2000
ldc.i4 5000
callvirt System.Int32 System.Random::Next(System.Int32,System.Int32)
call System.Void System.Threading.Thread::Sleep(System.Int32)
br.s IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
Module Name
AsyncClient.exe
Full Name
AsyncClient.exe
EntryPoint
System.Void Client.Program::Main()
Scope Name
AsyncClient.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
AsyncClient
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.0,Profile=Client
Total Strings
121
Main Method
System.Void Client.Program::Main()
Main IL Instruction Count
50
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::Delay
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>
call System.Boolean Client.Helper.MutexControl::CreateMutex()
brtrue IL_0043: ldsfld System.String Client.Settings::Anti
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Client.Settings::Anti
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0057: ldsfld System.String Client.Settings::Install
call System.Void Client.Helper.Anti_Analysis::RunAntiAnalysis()
ldsfld System.String Client.Settings::Install
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_006B: ldsfld System.String Client.Settings::BDOS
call System.Void Client.Install.NormalStartup::Install()
ldsfld System.String Client.Settings::BDOS
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0089: call System.Void Client.Helper.Methods::PreventSleep()
call System.Boolean Client.Helper.Methods::IsAdmin()
brfalse IL_0089: call System.Void Client.Helper.Methods::PreventSleep()
call System.Void Client.Helper.ProcessCritical::Set()
call System.Void Client.Helper.Methods::PreventSleep()
leave IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
pop <null>
leave IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
brtrue IL_00AD: newobj System.Void System.Random::.ctor()
call System.Void Client.Connection.ClientSocket::Reconnect()
call System.Void Client.Connection.ClientSocket::InitializeClient()
newobj System.Void System.Random::.ctor()
ldc.i4 2000
ldc.i4 5000
callvirt System.Int32 System.Random::Next(System.Int32,System.Int32)
call System.Void System.Threading.Thread::Sleep(System.Int32)
br.s IL_0099: call System.Boolean Client.Connection.ClientSocket::get_IsConnected()
Key (AES_256) MUTEXmalicious
a1lxNWhuhuhuhuhuhuhuhuhuhuhu
CnC CNCmalicious
Myfilhuhuhuhuhuhuhu
Ports PORTmalicious
6huhuhuhu
Ports PORTmalicious
7huhuhuhu
Ports PORTmalicious
8huhuhuhu
Mutex MUTEXmalicious
kqlhuhuhuhu
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