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.NET / MS Visual Basic 2005 - ASL Microsoft Visual Studio .NET
Symbol obfuscation
Very low
1 malicious · 3 files
EXE253f487de04d8eae9191dde986423d84njRat
Structure
Config. Field Value
Key (AES_256) MVZtajhuhuhuhuhuhuhuhuhuhuhu
Ports 6606huhuhuhuhuhuhu
Hosts 127huhuhuhu
Version 0huhuhuhu
Install fhuhuhuhu
Install-Folder %Aphuhuhuhu
Install File huhuhuhu
Mutex Hfdohuhuhuhu
Certificate MIIE8jhuhuhuhuhuhuhuhuhuhuhu
ServerSignature DRL4ZWhuhuhuhuhuhuhuhuhuhuhu
Anti-VM fhuhuhuhu
PasteBin nhuhuhuhu
BDOS fhuhuhuhu
Delay 3huhuhuhu
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
110
Main Method
System.Void Client.Program::Main()
Main IL Instruction Count
47
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::Install
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Client.Settings::Install
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0057: ldsfld System.String Client.Settings::BDOS
call System.Void Client.NormalStartup::Install()
ldsfld System.String Client.Settings::BDOS
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0075: call System.Void Client.Helper.Methods::PreventSleep()
call System.Boolean Client.Helper.Methods::MayKhachAdmin()
brfalse IL_0075: call System.Void Client.Helper.Methods::PreventSleep()
call System.Void Client.Helper.ProcessCritical::Set()
call System.Void Client.Helper.Methods::PreventSleep()
leave IL_0085: nop
pop <null>
leave IL_0085: nop
nop <null>
call System.Boolean Client.Connection.MayKhachs::get_IsConnected()
brtrue IL_009A: leave IL_00A5
call System.Void Client.Connection.MayKhachs::Reconnect()
call System.Void Client.Connection.MayKhachs::InitializeClient()
leave IL_00A5: ldc.i4 5000
pop <null>
leave IL_00A5: ldc.i4 5000
ldc.i4 5000
call System.Void System.Threading.Thread::Sleep(System.Int32)
br.s IL_0085: nop
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
110
Main Method
System.Void Client.Program::Main()
Main IL Instruction Count
47
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::Install
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Client.Settings::Install
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0057: ldsfld System.String Client.Settings::BDOS
call System.Void Client.NormalStartup::Install()
ldsfld System.String Client.Settings::BDOS
call System.Boolean System.Convert::ToBoolean(System.String)
brfalse IL_0075: call System.Void Client.Helper.Methods::PreventSleep()
call System.Boolean Client.Helper.Methods::MayKhachAdmin()
brfalse IL_0075: call System.Void Client.Helper.Methods::PreventSleep()
call System.Void Client.Helper.ProcessCritical::Set()
call System.Void Client.Helper.Methods::PreventSleep()
leave IL_0085: nop
pop <null>
leave IL_0085: nop
nop <null>
call System.Boolean Client.Connection.MayKhachs::get_IsConnected()
brtrue IL_009A: leave IL_00A5
call System.Void Client.Connection.MayKhachs::Reconnect()
call System.Void Client.Connection.MayKhachs::InitializeClient()
leave IL_00A5: ldc.i4 5000
pop <null>
leave IL_00A5: ldc.i4 5000
ldc.i4 5000
call System.Void System.Threading.Thread::Sleep(System.Int32)
br.s IL_0085: nop
Key (AES_256) MUTEXmalicious
MVZtajhuhuhuhuhuhuhuhuhuhuhu
Ports PORTmalicious
6huhuhuhu
Ports PORTmalicious
7huhuhuhu
Ports PORTmalicious
8huhuhuhu
CnC CNCmalicious
127huhuhuhu
Mutex MUTEXmalicious
Hfdohuhuhuhu
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