Suspicious
Suspect

ca51e7783b9291c5abe7f5c7a17de3f2

PE Executable
MD5: ca51e7783b9291c5abe7f5c7a17de3f2
Size: 2.1 MB
application/x-dosexec

Get an AI-generated breakdown of this malware's behaviour, IOCs and recommendations.

AI analysis is available with Essential.
Unlock with Essential
Symbol Obfuscation Score Low
MD5 ca51e7783b9291c5abe7f5c7a17de3f2
Sha1 f1f2c7cd366524ae3244f10644157f46490848ee
Sha256 e9bde2305f334da991bbee940dae97ad172128ee6f0fb6a3db07ec0478d15ea7
Sha384 db17b690556736abd7fbb0c4dcb748271741c934909d9e99141727a0b53e68b4ff56da67ddb710ab3d4f1f9e10f25efa
Sha512 fdb56b6d617ac04d10e4c2b1f4c8d041c8e2d5bc02066bd96039a48f3ddc7f83d78f5478f6a8a42e14ac3a5833dea6d3fceca8b31642c490602a1a0db4d67b55
SSDeep 49152:66u48x82topMYhesWeO3opIYY2F6wVpPeAcPEM:b8xtq7qRouYlF/Ncn
TLSH E9A53389FC31C03AC656CD30AECD1946651D3C76AFC06AAF7DAA32806A255D3594F3E3
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
ca51e7783b9291c5abe7f5c7a17de3f2
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
RT_MANIFEST
ID:0001
ID:0
Name Value
Module Name
DownloaderApp.exe
Full Name
DownloaderApp.exe
EntryPoint
System.Int32 <Module>::Main(System.String[])
Scope Name
DownloaderApp.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
DownloaderApp
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.7.2
Total Strings
1
Main Method
System.Int32 <Module>::Main(System.String[])
Main IL Instruction Count
96
Main IL 
ldc.i4 522606
pop <null>
ldc.i4 522606
newarr System.UInt32
dup <null>
ldtoken <Module>/DataType <Module>::DataField
call System.Void System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(System.Array,System.RuntimeFieldHandle)
stloc.0 <null>
call System.Reflection.Assembly System.Reflection.Assembly::GetExecutingAssembly()
dup <null>
callvirt System.Reflection.Module System.Reflection.Assembly::get_ManifestModule()
stloc.1 <null>
ldloc.0 <null>
ldc.i4 1078890920
call System.Runtime.InteropServices.GCHandle <Module>::Decrypt(System.UInt32[],System.UInt32)
stloc.2 <null>
ldloca.s V_2
call System.Object System.Runtime.InteropServices.GCHandle::get_Target()
castclass System.Byte[]
stloc.3 <null>
ldstr koi
ldloc.3 <null>
callvirt System.Reflection.Module System.Reflection.Assembly::LoadModule(System.String,System.Byte[])
ldloc.3 <null>
ldc.i4.0 <null>
ldloc.3 <null>
ldlen <null>
conv.i4 <null>
call System.Void System.Array::Clear(System.Array,System.Int32,System.Int32)
ldloca.s V_2
call System.Void System.Runtime.InteropServices.GCHandle::Free()
ldloc.0 <null>
ldc.i4.0 <null>
ldloc.0 <null>
ldlen <null>
conv.i4 <null>
call System.Void System.Array::Clear(System.Array,System.Int32,System.Int32)
ldloc.1 <null>
ldc.i4 285212673
callvirt System.Byte[] System.Reflection.Module::ResolveSignature(System.Int32)
stsfld System.Byte[] <Module>::key
call System.AppDomain System.AppDomain::get_CurrentDomain()
ldnull <null>
ldftn System.Reflection.Assembly <Module>::Resolve(System.Object,System.ResolveEventArgs)
newobj System.Void System.ResolveEventHandler::.ctor(System.Object,System.IntPtr)
callvirt System.Void System.AppDomain::add_AssemblyResolve(System.ResolveEventHandler)
dup <null>
callvirt System.Type[] System.Reflection.Module::GetTypes()
pop <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.0 <null>
ldelem.u1 <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.1 <null>
ldelem.u1 <null>
ldc.i4.8 <null>
shl <null>
or <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.2 <null>
ldelem.u1 <null>
ldc.i4.s 16
shl <null>
or <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.3 <null>
ldelem.u1 <null>
ldc.i4.s 24
shl <null>
or <null>
callvirt System.Reflection.MethodBase System.Reflection.Module::ResolveMethod(System.Int32)
dup <null>
callvirt System.Reflection.ParameterInfo[] System.Reflection.MethodBase::GetParameters()
ldlen <null>
conv.i4 <null>
newarr System.Object
stloc.s V_4
ldloc.s V_4
ldlen <null>
brfalse.s IL_00D9: ldnull
ldloc.s V_4
ldc.i4.0 <null>
ldarg.0 <null>
stelem.ref <null>
ldnull <null>
ldloc.s V_4
callvirt System.Object System.Reflection.MethodBase::Invoke(System.Object,System.Object[])
stloc.s V_5
ldloc.s V_5
isinst System.Int32
brfalse.s IL_00F4: ldc.i4.0
ldloc.s V_5
unbox.any System.Int32
ret <null>
ldc.i4.0 <null>
ret <null>
Module Name
DownloaderApp.exe
Full Name
DownloaderApp.exe
EntryPoint
System.Int32 <Module>::Main(System.String[])
Scope Name
DownloaderApp.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
DownloaderApp
Assembly Version
1.0.0.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.7.2
Total Strings
1
Main Method
System.Int32 <Module>::Main(System.String[])
Main IL Instruction Count
96
Main IL 
ldc.i4 522606
pop <null>
ldc.i4 522606
newarr System.UInt32
dup <null>
ldtoken <Module>/DataType <Module>::DataField
call System.Void System.Runtime.CompilerServices.RuntimeHelpers::InitializeArray(System.Array,System.RuntimeFieldHandle)
stloc.0 <null>
call System.Reflection.Assembly System.Reflection.Assembly::GetExecutingAssembly()
dup <null>
callvirt System.Reflection.Module System.Reflection.Assembly::get_ManifestModule()
stloc.1 <null>
ldloc.0 <null>
ldc.i4 1078890920
call System.Runtime.InteropServices.GCHandle <Module>::Decrypt(System.UInt32[],System.UInt32)
stloc.2 <null>
ldloca.s V_2
call System.Object System.Runtime.InteropServices.GCHandle::get_Target()
castclass System.Byte[]
stloc.3 <null>
ldstr koi
ldloc.3 <null>
callvirt System.Reflection.Module System.Reflection.Assembly::LoadModule(System.String,System.Byte[])
ldloc.3 <null>
ldc.i4.0 <null>
ldloc.3 <null>
ldlen <null>
conv.i4 <null>
call System.Void System.Array::Clear(System.Array,System.Int32,System.Int32)
ldloca.s V_2
call System.Void System.Runtime.InteropServices.GCHandle::Free()
ldloc.0 <null>
ldc.i4.0 <null>
ldloc.0 <null>
ldlen <null>
conv.i4 <null>
call System.Void System.Array::Clear(System.Array,System.Int32,System.Int32)
ldloc.1 <null>
ldc.i4 285212673
callvirt System.Byte[] System.Reflection.Module::ResolveSignature(System.Int32)
stsfld System.Byte[] <Module>::key
call System.AppDomain System.AppDomain::get_CurrentDomain()
ldnull <null>
ldftn System.Reflection.Assembly <Module>::Resolve(System.Object,System.ResolveEventArgs)
newobj System.Void System.ResolveEventHandler::.ctor(System.Object,System.IntPtr)
callvirt System.Void System.AppDomain::add_AssemblyResolve(System.ResolveEventHandler)
dup <null>
callvirt System.Type[] System.Reflection.Module::GetTypes()
pop <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.0 <null>
ldelem.u1 <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.1 <null>
ldelem.u1 <null>
ldc.i4.8 <null>
shl <null>
or <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.2 <null>
ldelem.u1 <null>
ldc.i4.s 16
shl <null>
or <null>
ldsfld System.Byte[] <Module>::key
ldc.i4.3 <null>
ldelem.u1 <null>
ldc.i4.s 24
shl <null>
or <null>
callvirt System.Reflection.MethodBase System.Reflection.Module::ResolveMethod(System.Int32)
dup <null>
callvirt System.Reflection.ParameterInfo[] System.Reflection.MethodBase::GetParameters()
ldlen <null>
conv.i4 <null>
newarr System.Object
stloc.s V_4
ldloc.s V_4
ldlen <null>
brfalse.s IL_00D9: ldnull
ldloc.s V_4
ldc.i4.0 <null>
ldarg.0 <null>
stelem.ref <null>
ldnull <null>
ldloc.s V_4
callvirt System.Object System.Reflection.MethodBase::Invoke(System.Object,System.Object[])
stloc.s V_5
ldloc.s V_5
isinst System.Int32
brfalse.s IL_00F4: ldc.i4.0
ldloc.s V_5
unbox.any System.Int32
ret <null>
ldc.i4.0 <null>
ret <null>
ca51e7783b9291c5abe7f5c7a17de3f2
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
RT_MANIFEST
ID:0001
ID:0
No malware configuration was found at this point.
You must be signed in to view YARA rules.
An error has occurred. This application may no longer respond until reloaded. Reload 🗙