Malicious
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PE Executable
MD5:
Size: 0 B
application/x-dosexec
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File
Type
Portable Executable 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
EXEcefc4268d4f249d6bcc3b7824c701ffbnjRat
Structure
Config. Field Value
Mutex q7YKwhuhuhuhuhuhuhu
Pastebin https:huhuhuhuhuhuhuhuhuhuhu
KEY <6huhuhuhu
USBNM <XWhuhuhuhu
family xhuhuhuhu
We extracted this malware's full configuration (C2, credentials, campaign IDs…).
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Name Value
Module Name
lol.exe
Full Name
lol.exe
EntryPoint
System.Void Stub.Main::Main()
Scope Name
lol.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
lol
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
<null>
Total Strings
156
Main Method
System.Void Stub.Main::Main()
Main IL Instruction Count
83
Main IL 
ldsfld System.Int32 Settings::Sleep
ldc.i4 1000
mul.ovf <null>
call System.Void System.Threading.Thread::Sleep(System.Int32)
ldsfld System.String Settings::KEY
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::KEY
ldsfld System.String Settings::SPL
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::SPL
ldsfld System.String Settings::Group
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::Group
ldsfld System.String Settings::USBNM
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::USBNM
ldsfld System.String Settings::PasteUrl
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::PasteUrl
leave.s IL_008A: call System.Boolean Stub.Helper::CreateMutex()
dup <null>
call System.Void Microsoft.VisualBasic.CompilerServices.ProjectData::SetProjectError(System.Exception)
stloc.3 <null>
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
call System.Void Microsoft.VisualBasic.CompilerServices.ProjectData::ClearProjectError()
leave.s IL_008A: call System.Boolean Stub.Helper::CreateMutex()
call System.Boolean Stub.Helper::CreateMutex()
brtrue.s IL_0097: ldsfld System.String Settings::PasteUrl
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Settings::PasteUrl
call System.String Stub.Main::DownloadStr(System.String)
stloc.0 <null>
ldloc.0 <null>
ldc.i4.1 <null>
newarr System.Char
stloc.s V_4
ldloc.s V_4
ldc.i4.0 <null>
ldc.i4.s 58
stelem.i2 <null>
ldloc.s V_4
callvirt System.String[] System.String::Split(System.Char[])
ldc.i4.0 <null>
ldelem.ref <null>
stsfld System.String Settings::Host
ldloc.0 <null>
ldc.i4.1 <null>
newarr System.Char
stloc.s V_4
ldloc.s V_4
ldc.i4.0 <null>
ldc.i4.s 58
stelem.i2 <null>
ldloc.s V_4
callvirt System.String[] System.String::Split(System.Char[])
ldc.i4.1 <null>
ldelem.ref <null>
stsfld System.String Settings::Port
call System.Void Stub.Helper::PreventSleep()
ldnull <null>
ldftn System.Void Stub.Main::_Lambda$__1()
newobj System.Void System.Threading.ThreadStart::.ctor(System.Object,System.IntPtr)
newobj System.Void System.Threading.Thread::.ctor(System.Threading.ThreadStart)
stloc.1 <null>
ldnull <null>
ldftn System.Void Stub.Main::_Lambda$__2()
newobj System.Void System.Threading.ThreadStart::.ctor(System.Object,System.IntPtr)
newobj System.Void System.Threading.Thread::.ctor(System.Threading.ThreadStart)
stloc.2 <null>
ldloc.1 <null>
callvirt System.Void System.Threading.Thread::Start()
ldloc.2 <null>
callvirt System.Void System.Threading.Thread::Start()
ldloc.2 <null>
callvirt System.Void System.Threading.Thread::Join()
ret <null>
Module Name
lol.exe
Full Name
lol.exe
EntryPoint
System.Void Stub.Main::Main()
Scope Name
lol.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
lol
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
<null>
Total Strings
156
Main Method
System.Void Stub.Main::Main()
Main IL Instruction Count
83
Main IL 
ldsfld System.Int32 Settings::Sleep
ldc.i4 1000
mul.ovf <null>
call System.Void System.Threading.Thread::Sleep(System.Int32)
ldsfld System.String Settings::KEY
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::KEY
ldsfld System.String Settings::SPL
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::SPL
ldsfld System.String Settings::Group
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::Group
ldsfld System.String Settings::USBNM
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::USBNM
ldsfld System.String Settings::PasteUrl
call System.Object Stub.AlgorithmAES::Decrypt(System.String)
call System.String Microsoft.VisualBasic.CompilerServices.Conversions::ToString(System.Object)
stsfld System.String Settings::PasteUrl
leave.s IL_008A: call System.Boolean Stub.Helper::CreateMutex()
dup <null>
call System.Void Microsoft.VisualBasic.CompilerServices.ProjectData::SetProjectError(System.Exception)
stloc.3 <null>
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
call System.Void Microsoft.VisualBasic.CompilerServices.ProjectData::ClearProjectError()
leave.s IL_008A: call System.Boolean Stub.Helper::CreateMutex()
call System.Boolean Stub.Helper::CreateMutex()
brtrue.s IL_0097: ldsfld System.String Settings::PasteUrl
ldc.i4.0 <null>
call System.Void System.Environment::Exit(System.Int32)
ldsfld System.String Settings::PasteUrl
call System.String Stub.Main::DownloadStr(System.String)
stloc.0 <null>
ldloc.0 <null>
ldc.i4.1 <null>
newarr System.Char
stloc.s V_4
ldloc.s V_4
ldc.i4.0 <null>
ldc.i4.s 58
stelem.i2 <null>
ldloc.s V_4
callvirt System.String[] System.String::Split(System.Char[])
ldc.i4.0 <null>
ldelem.ref <null>
stsfld System.String Settings::Host
ldloc.0 <null>
ldc.i4.1 <null>
newarr System.Char
stloc.s V_4
ldloc.s V_4
ldc.i4.0 <null>
ldc.i4.s 58
stelem.i2 <null>
ldloc.s V_4
callvirt System.String[] System.String::Split(System.Char[])
ldc.i4.1 <null>
ldelem.ref <null>
stsfld System.String Settings::Port
call System.Void Stub.Helper::PreventSleep()
ldnull <null>
ldftn System.Void Stub.Main::_Lambda$__1()
newobj System.Void System.Threading.ThreadStart::.ctor(System.Object,System.IntPtr)
newobj System.Void System.Threading.Thread::.ctor(System.Threading.ThreadStart)
stloc.1 <null>
ldnull <null>
ldftn System.Void Stub.Main::_Lambda$__2()
newobj System.Void System.Threading.ThreadStart::.ctor(System.Object,System.IntPtr)
newobj System.Void System.Threading.Thread::.ctor(System.Threading.ThreadStart)
stloc.2 <null>
ldloc.1 <null>
callvirt System.Void System.Threading.Thread::Start()
ldloc.2 <null>
callvirt System.Void System.Threading.Thread::Start()
ldloc.2 <null>
callvirt System.Void System.Threading.Thread::Join()
ret <null>
Mutex MUTEXmalicious
q7YKwhuhuhuhuhuhuhu
Pastebin URImalicious
https:huhuhuhuhuhuhuhuhuhuhu
Full artefact values (URLs, paths, registry keys, scripts…) are available with Essential.
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