Malicious
Malicious

e4c8cb4b8a732e71ca04ba532de3df83

PE Executable
MD5: e4c8cb4b8a732e71ca04ba532de3df83
Size: 908.29 KB
application/x-dosexec
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Get an AI-generated breakdown of this malware's behaviour, IOCs and recommendations.

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Symbol Obfuscation Score Medium
MD5 e4c8cb4b8a732e71ca04ba532de3df83
Sha1 13726609ae5418f1f3ef9dc904541326da005ce3
Sha256 a7abcd989fded351e7aa80eb9e0feef0db40f3e7aee79964ad2fe1f57d5cac3f
Sha384 971ef4dc28eb468d043c0fcf93c1cdb2595267f196188cc043d4e93754f87f207b9e714a4c8536752ca73026392ff389
Sha512 d6e4b2a80e9569ef2cc60a103f2943ad44133cfa4ac7bba5bd834a61a675a66212f0fee1259b9aaecae9415d89da391d95f7bafa142424cb00d56552929b7821
SSDeep 24576:crqmszxJzck+uGW/yFoBkkAV7gvIv7gJLX:crqmiTYjqqanGMvIvsJ
TLSH 7715D090B7F4860AE1FF0BB9E47644444B77F616AA77C74F098864AD1EA3380CE517A3
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
e4c8cb4b8a732e71ca04ba532de3df83
Malicious
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_ICON
ID:0001
ID:0
ID:0-preview.png
RT_GROUP_CURSOR4
ID:0001
ID:0
RT_VERSION
ID:0001
ID:0
RT_MANIFEST
ID:0001
ID:0
.Net Resources
Pulsar.Client.FrmRemoteChat.resources
costura.messagepack.dll.compressed
costura.messagepack.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.messagepack.annotations.dll.compressed
costura.messagepack.annotations.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.system.buffers.dll.compressed
costura.system.buffers.dll
[Authenticode]_8c38879e.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Buffers.SR.resources
costura.system.collections.immutable.dll.compressed
costura.system.collections.immutable.dll
[Authenticode]_937eee08.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Collections.Immutable.SR.resources
ILLink.Substitutions.xml
costura.system.memory.dll.compressed
costura.system.memory.dll
[Authenticode]_15ab3250.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Memory.SR.resources
costura.system.numerics.vectors.dll.compressed
costura.system.numerics.vectors.dll
[Authenticode]_ae030d4d.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Numerics.Vectors.SR.resources
costura.system.runtime.compilerservices.unsafe.dll.compressed
costura.system.runtime.compilerservices.unsafe.dll
[Authenticode]_e61c97b9.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.system.threading.tasks.extensions.dll.compressed
costura.system.threading.tasks.extensions.dll
[Authenticode]_7121b905.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.pulsar.common.dll.compressed
costura.pulsar.common.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.metadata
STICH beta Structural Threat Infection Chain Hash

A content-independent fingerprint of the infection method: successive formats, internal objects and MITRE techniques from the initial file to each final payload.

STICH Path = the fingerprint (canonical chain with techniques) STICH Shape = structure only Only determinant branches produce STICH Paths.
5 / 5
Path pe:exe>pe:dll>pe:rsrc>bin
Shape pe:exe>pe:dll>pe:rsrc>bin
malicious 4 nodes
Path pe:exe>pe:dll>bin
Shape pe:exe>pe:dll>bin
malicious 3 nodes
Config. Field Value
Conf. AES-Salt BF-EB-huhuhuhuhuhuhuhuhuhuhu
Conf. AES-Key
Version Objehuhuhuhu
Port Chainhuhuhuhuhuhuhu
Host Chainhuhuhuhuhuhuhu
ReconnectDelay Authhuhuhuhuhuhuhu
Key Chaihuhuhuhu
SubDirectory Keyhuhuhuhu
InstallName Ahuhuhuhu
Install Microshuhuhuhuhuhuhuhuhuhuhu
Startup 1huhuhuhu
Mutex 1huhuhuhu
StartupKey -10huhuhuhu
HideFile fnUoXOhuhuhuhuhuhuhuhuhuhuhu
EnableLogger uW1/Uthuhuhuhuhuhuhuhuhuhuhu
EncryptionKey 3huhuhuhu
We extracted this malware's full configuration (C2, credentials, campaign IDs…).
Unlock with Essential
Name Value
Module Name
Client.exe
Full Name
Client.exe
EntryPoint
System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::Main()
Scope Name
Client.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
Client
Assembly Version
2.3.3.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.8.1
Info
PE Detect: PeReader OK (file layout)
Info
PDB Path: ?
Total Strings
1534
Main Method
System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::Main()
Main IL Instruction Count
11
Main IL 
ldc.i4 3072
call System.Void System.Net.ServicePointManager::set_SecurityProtocol(System.Net.SecurityProtocolType)
ldc.i4.2 <null>
call System.Void System.Windows.Forms.Application::SetUnhandledExceptionMode(System.Windows.Forms.UnhandledExceptionMode)
call System.Void System.Windows.Forms.Application::EnableVisualStyles()
ldc.i4.0 <null>
call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean)
call System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::h04diy1DZwL()
newobj System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.hJFFUNWWPiwsrsBMHwU3ZT5lS07::.ctor()
call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form)
ret <null>
Module Name
Client.exe
Full Name
Client.exe
EntryPoint
System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::Main()
Scope Name
Client.exe
Scope Type
ModuleDef
Kind
Windows
Runtime Version
v4.0.30319
Tables Header Version
512
WinMD Version
<null>
Assembly Name
Client
Assembly Version
2.3.3.0
Assembly Culture
<null>
Has PublicKey
False
PublicKey Token
<null>
Target Framework
.NETFramework,Version=v4.8.1
Total Strings
1534
Main Method
System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::Main()
Main IL Instruction Count
11
Main IL 
ldc.i4 3072
call System.Void System.Net.ServicePointManager::set_SecurityProtocol(System.Net.SecurityProtocolType)
ldc.i4.2 <null>
call System.Void System.Windows.Forms.Application::SetUnhandledExceptionMode(System.Windows.Forms.UnhandledExceptionMode)
call System.Void System.Windows.Forms.Application::EnableVisualStyles()
ldc.i4.0 <null>
call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean)
call System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.tyeUVfoVj02::h04diy1DZwL()
newobj System.Void rtbzvmkorwubvbrmieqvcajjeqmbe.hJFFUNWWPiwsrsBMHwU3ZT5lS07::.ctor()
call System.Void System.Windows.Forms.Application::Run(System.Windows.Forms.Form)
ret <null>
CnC CNCmalicious
Chainhuhuhuhuhuhuhu
Port PORTmalicious
Chainhuhuhuhuhuhuhu
Full artefact values (URLs, paths, registry keys, scripts…) are available with Essential.
Unlock with Essential
e4c8cb4b8a732e71ca04ba532de3df83
Malicious
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_ICON
ID:0001
ID:0
ID:0-preview.png
RT_GROUP_CURSOR4
ID:0001
ID:0
RT_VERSION
ID:0001
ID:0
RT_MANIFEST
ID:0001
ID:0
.Net Resources
Pulsar.Client.FrmRemoteChat.resources
costura.messagepack.dll.compressed
costura.messagepack.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.messagepack.annotations.dll.compressed
costura.messagepack.annotations.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.system.buffers.dll.compressed
costura.system.buffers.dll
[Authenticode]_8c38879e.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Buffers.SR.resources
costura.system.collections.immutable.dll.compressed
costura.system.collections.immutable.dll
[Authenticode]_937eee08.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Collections.Immutable.SR.resources
ILLink.Substitutions.xml
costura.system.memory.dll.compressed
costura.system.memory.dll
[Authenticode]_15ab3250.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Memory.SR.resources
costura.system.numerics.vectors.dll.compressed
costura.system.numerics.vectors.dll
[Authenticode]_ae030d4d.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
.Net Resources
FxResources.System.Numerics.Vectors.SR.resources
costura.system.runtime.compilerservices.unsafe.dll.compressed
costura.system.runtime.compilerservices.unsafe.dll
[Authenticode]_e61c97b9.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.system.threading.tasks.extensions.dll.compressed
costura.system.threading.tasks.extensions.dll
[Authenticode]_7121b905.p7b
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.pulsar.common.dll.compressed
costura.pulsar.common.dll
Structure
DosHeader
PE Header
Optional Header (x86)
Section Headers
.text
.rsrc
.reloc
Resources
RT_VERSION
ID:0001
ID:0
costura.metadata
Config. Field Value
Conf. AES-Salt BF-EB-huhuhuhuhuhuhuhuhuhuhu
Conf. AES-Key
Version Objehuhuhuhu
Port Chainhuhuhuhuhuhuhu
Host Chainhuhuhuhuhuhuhu
ReconnectDelay Authhuhuhuhuhuhuhu
Key Chaihuhuhuhu
SubDirectory Keyhuhuhuhu
InstallName Ahuhuhuhu
Install Microshuhuhuhuhuhuhuhuhuhuhu
Startup 1huhuhuhu
Mutex 1huhuhuhu
StartupKey -10huhuhuhu
HideFile fnUoXOhuhuhuhuhuhuhuhuhuhuhu
EnableLogger uW1/Uthuhuhuhuhuhuhuhuhuhuhu
EncryptionKey 3huhuhuhu
We extracted this malware's full configuration (C2, credentials, campaign IDs…).
Unlock with Essential
CnC CNCmalicious
Chainhuhuhuhuhuhuhu
e4c8cb4b8a732e71ca04ba532de3df83
Port PORTmalicious
Chainhuhuhuhuhuhuhu
e4c8cb4b8a732e71ca04ba532de3df83
Full artefact values (URLs, paths, registry keys, scripts…) are available with Essential.
Unlock with Essential
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