QuasarRat PE Executable malware analysis – 9270d36aa57e

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File

Size

356.35 KB · 356,352 B

First seen

2026-07-28 07:02 · 3 months ago

Last seen

2026-07-28 07:02 · 3 months ago

Last analysis

2026-07-28 07:02 · 3 months ago

Hashes

MD5 2ac1f830806ce3bdd35cdcb957f139ba Sha1 00f6a68fef995c15c116c48b18d9611db036c1e5 Sha256 9270d36aa57eec3d44dc2d66929551198cb8a31d0ef383a726c38b75ad8144ba Sha384 5f1afa68bc650399116d6b3ae215c93b3a389244ad3cc5796e0c388f74c7b8b556b4e3aec54e1286ac307621162cd6b3 Sha512 5eca9c6f9be362f4ca7a7c5e7b5e8e9c8ba1b46558575b2703de982dbcc2a61b1cf5e7af3c292e4cb745994dcd1198cf0dd50648f1dcd5f82aefc310e49b061d SSDeep 6144:kzNHXf500MbHkuNarU5bX1z0oaGMHAM2S06:ud509kuNAUl1zEGMHAI06 TLSH E1747C1373A8D67BD1BE173BE53206056BB0D407B712E38B5A6855BCAC123868D91BF3

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

Medium

1 malicious · 7 files

EXE2ac1f830806ce3bdd35cdcb957f139baQuasarRat

Structure

BINResources

BIN.Net Resources

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.

3 / 3

Path pe:exe>pe:rsrc>bin

Shape pe:exe>pe:rsrc>bin

malicious 3 nodes

Path pe:exe>bin

Shape pe:exe>bin

malicious 2 nodes

Config. Field	Value
Conf. AES-Salt	BF-EB-huhuhuhuhuhuhuhuhuhuhu
Conf. AES-Key	a8O1Ybhuhuhuhuhuhuhu
Version	1.huhuhuhu
Port	1huhuhuhu
Host	91.1huhuhuhuhuhuhu
ReconnectDelay	3huhuhuhu
Key	1WvgEMhuhuhuhuhuhuhu
AuthKey	NcFtjbhuhuhuhuhuhuhuhuhuhuhu
SubDirectory	Suhuhuhuhu
InstallName	Clihuhuhuhu
Install	0huhuhuhu
Startup	0huhuhuhu
Mutex	QSR_MUhuhuhuhuhuhuhuhuhuhuhu
StartupKey	Quasarhuhuhuhuhuhuhu
HideFile	0huhuhuhu
EnableLogger	0huhuhuhu
Tag	Ofhuhuhuhu
LogDirectory	Lhuhuhuhu
HideLogDirectory	0huhuhuhu
HideLogSubdirectory	0huhuhuhu

We extracted this malware's full configuration (C2, credentials, campaign IDs…).

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Name	Value
Module Name	Client.exe
Full Name	Client.exe
EntryPoint	System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::Main(System.String[])
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	1.3.0.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.0,Profile=Client
Total Strings	896
Main Method	System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::Main(System.String[])
Main IL Instruction Count	19
Main IL	call System.Void System.Windows.Forms.Application::EnableVisualStyles() ldc.i4.0 <null> call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean) call System.AppDomain System.AppDomain::get_CurrentDomain() ldnull <null> ldftn System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::觤궄뢎舯ꆈ陂ﻗ誂邥짶㠢边⃠敡췐엙싌쉱꽟(System.Object,System.UnhandledExceptionEventArgs) newobj System.Void System.UnhandledExceptionEventHandler::.ctor(System.Object,System.IntPtr) callvirt System.Void System.AppDomain::add_UnhandledException(System.UnhandledExceptionEventHandler) call System.Boolean 喁⴫놰귺顉�얼赤풾踂䳡薟즇껀눳픠颢::籩㞠쑁犄⮴帍⎎鸏삐堂뙸Ⰼ쳔⬖䱆痙㶜붫ⷼ() brfalse.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Boolean 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::꒞丙㲧퐰徘⢰ⓖ詉쏤뮞呾簡�伪潯졷鼏ᷖ() brfalse.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Boolean ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪::get_Exiting() brtrue.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() ldsfld ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::題뎔ទਸৢ뤒ঁ띌࿧䬇漽띏嶁㝒둱䁄검 callvirt System.Void ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪::쾹ｌ鶫䎀䒟会Ɇ᧭绂쬞삘ℰ㯆季勒멐煅ꇎǱ() call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::ﱈᙼ왖迧ؗ㈌뤤ꦬ﷝쒷뭩岵ꁛ뮔鬶䎌찲() ret <null>
Module Name	Client.exe
Full Name	Client.exe
EntryPoint	System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::Main(System.String[])
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	1.3.0.0
Assembly Culture	<null>
Has PublicKey	False
PublicKey Token	<null>
Target Framework	.NETFramework,Version=v4.0,Profile=Client
Total Strings	896
Main Method	System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::Main(System.String[])
Main IL Instruction Count	19
Main IL	call System.Void System.Windows.Forms.Application::EnableVisualStyles() ldc.i4.0 <null> call System.Void System.Windows.Forms.Application::SetCompatibleTextRenderingDefault(System.Boolean) call System.AppDomain System.AppDomain::get_CurrentDomain() ldnull <null> ldftn System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::觤궄뢎舯ꆈ陂ﻗ誂邥짶㠢边⃠敡췐엙싌쉱꽟(System.Object,System.UnhandledExceptionEventArgs) newobj System.Void System.UnhandledExceptionEventHandler::.ctor(System.Object,System.IntPtr) callvirt System.Void System.AppDomain::add_UnhandledException(System.UnhandledExceptionEventHandler) call System.Boolean 喁⴫놰귺顉�얼赤풾踂䳡薟즇껀눳픠颢::籩㞠쑁犄⮴帍⎎鸏삐堂뙸Ⰼ쳔⬖䱆痙㶜붫ⷼ() brfalse.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Boolean 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::꒞丙㲧퐰徘⢰ⓖ詉쏤뮞呾簡�伪潯졷鼏ᷖ() brfalse.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Boolean ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪::get_Exiting() brtrue.s IL_0040: call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() ldsfld ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::題뎔ទਸৢ뤒ঁ띌࿧䬇漽띏嶁㝒둱䁄검 callvirt System.Void ⭙໱軽靊ሹꔼ죽糯㊫㿶ᑔ汲愭㳄辒�Ჾ횪::쾹ｌ鶫䎀䒟会Ɇ᧭绂쬞삘ℰ㯆季勒멐煅ꇎǱ() call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::‾뚨⮶俗娯耄㻜쬉⻯烢㡊ﳯ鸉勶䜠ｇ() call System.Void 簾뾒㒹뀒뙏⩍綴ਓ闏튔亷麢脄㋺᫬뻥䓻::ﱈᙼ왖迧ؗ㈌뤤ꦬ﷝쒷뭩岵ꁛ뮔鬶䎌찲() ret <null>

CnC CNCmalicious

91.1huhuhuhuhuhuhu

Port PORTmalicious

1huhuhuhu

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