quasar | 2447438e200ce5fbb043278cd27960bb7ad9c8aa2767fc9331b5150d0b184b99

Reason

Machine shutdown

General

Target

2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe
Size

3.9MB
MD5

74ac1825148109702a52be3db0aefa02
SHA1

3c225c5ac67009f0192e0de457c8ea8b69a68462
SHA256

2447438e200ce5fbb043278cd27960bb7ad9c8aa2767fc9331b5150d0b184b99
SHA512

b25d6bf9c14a5fa23686ea73df1af4a17a4e8af44cb1beb7490431473f26eb8ec52ebcb47304ef2a44989bd21bb10cfd98cecdb53acc4db306aeee1094a18071
SSDEEP

49152:DVNUO/YueL2PYCDbLftqxo1XEC2gFuVoPBsE1/HENJ9WvU:62OMLBryJB

Score

10^/10

quasar software spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

software

C2

qassar23.ddns.net:1993

Mutex

QSR_MUTEX_8qLPsMuUILG0w5xt01

Attributes

encryption_key
FfICOWgR7IOmFn9viaox
install_name
Update service.exe
log_directory
Logs
reconnect_delay
3000
startup_key
software
subdirectory
microsofte

Signatures

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

Quasar payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Detects executables containing common artifacts observed in infostealers 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4064-0-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_SUSPICIOUS_GENInfoStealer

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

11 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe

description pid process target process

PID 2596 set thread context of 4064 2596 2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe jsc.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

1596 schtasks.exe

flow	ioc
11	ip-api.com

description	pid	process	target process
PID 2596 set thread context of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe

pid	process
1596	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "12"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

jsc.exeshutdown.exe

description pid process

Token: SeDebugPrivilege 4064 jsc.exe
Token: SeShutdownPrivilege 4440 shutdown.exe
Token: SeRemoteShutdownPrivilege 4440 shutdown.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid process

2016 LogonUI.exe

description	pid	process
Token: SeDebugPrivilege	4064	jsc.exe
Token: SeShutdownPrivilege	4440	shutdown.exe
Token: SeRemoteShutdownPrivilege	4440	shutdown.exe

pid	process
2016	LogonUI.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exejsc.exe

description	pid	process	target process
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 2596 wrote to memory of 4064	2596	2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe	jsc.exe
PID 4064 wrote to memory of 1596	4064	jsc.exe	schtasks.exe
PID 4064 wrote to memory of 1596	4064	jsc.exe	schtasks.exe
PID 4064 wrote to memory of 1596	4064	jsc.exe	schtasks.exe
PID 4064 wrote to memory of 4440	4064	jsc.exe	shutdown.exe
PID 4064 wrote to memory of 4440	4064	jsc.exe	shutdown.exe
PID 4064 wrote to memory of 4440	4064	jsc.exe	shutdown.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_74ac1825148109702a52be3db0aefa02_megazord.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2596

C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4064

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "software" /sc ONLOGON /tr "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:1596

C:\Windows\SysWOW64\shutdown.exe
"C:\Windows\System32\shutdown.exe" /s /t 0
3⤵
- Suspicious use of AdjustPrivilegeToken
PID:4440

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3967055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

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Downloads

memory/4064-0-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/4064-1-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/4064-2-0x0000000005B40000-0x00000000060E4000-memory.dmp

Filesize
5.6MB

Download
memory/4064-3-0x00000000056C0000-0x0000000005752000-memory.dmp

Filesize
584KB

Download
memory/4064-4-0x0000000074520000-0x0000000074CD0000-memory.dmp

Filesize
7.7MB

Download
memory/4064-5-0x0000000005620000-0x0000000005686000-memory.dmp

Filesize
408KB

Download
memory/4064-6-0x0000000006570000-0x0000000006582000-memory.dmp

Filesize
72KB

Download
memory/4064-7-0x0000000006AF0000-0x0000000006B2C000-memory.dmp

Filesize
240KB

Download
memory/4064-8-0x0000000007260000-0x000000000726A000-memory.dmp

Filesize
40KB

Download
memory/4064-9-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/4064-10-0x0000000074520000-0x0000000074CD0000-memory.dmp

Filesize
7.7MB

Download
memory/4064-11-0x0000000074520000-0x0000000074CD0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads