quasar | 4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa

General

Target

4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe
Size

348KB
MD5

6e5fef5da8810aa3fffad5a486c68cf3
SHA1

70f6507e9b2644fbcb75c78c6660dbdca4da5ef0
SHA256

4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa
SHA512

94dec0822aef151ec843732e9f13d550c59bb4575f8fff7822f5c2bf4d36854dc0c4061dbbcd6c2377aaac77ad86aa48092515fdc7388148e76db96f8417d027

Score

10^/10

quasar system spyware suricata trojan

Malware Config

Extracted

Family

quasar

Version

1.1.0.0

Botnet

System

C2

82.202.167.203:4444

Mutex

xTSR_MUTEX_JOBXsgj4pMGMmIDVNc

Attributes

encryption_key
eu7tm2CUeFG5FGwJlQkW
install_name
core.exe
log_directory
logs
reconnect_delay
3000
startup_key
System Core
subdirectory
system

Signatures

Quasar Payload 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4028-130-0x0000000000580000-0x00000000005DE000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\system\core.exe	family_quasar
C:\Users\Admin\AppData\Roaming\system\core.exe	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
suricata: ET MALWARE Common RAT Connectivity Check Observed
suricata: ET MALWARE Common RAT Connectivity Check Observed
suricata
Executes dropped EXE 1 IoCs

Processes:

core.exe

pid process

4260 core.exe
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

8 ip-api.com
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4944 schtasks.exe
4956 schtasks.exe

pid	process
4260	core.exe

flow	ioc
8	ip-api.com

pid	process
4944	schtasks.exe
4956	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.execore.exe

description	pid	process
Token: SeDebugPrivilege	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe
Token: SeDebugPrivilege	4260	core.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

core.exe

pid process

4260 core.exe

pid	process
4260	core.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.execore.exe

description	pid	process	target process
PID 4028 wrote to memory of 4944	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	schtasks.exe
PID 4028 wrote to memory of 4944	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	schtasks.exe
PID 4028 wrote to memory of 4944	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	schtasks.exe
PID 4028 wrote to memory of 4260	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	core.exe
PID 4028 wrote to memory of 4260	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	core.exe
PID 4028 wrote to memory of 4260	4028	4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe	core.exe
PID 4260 wrote to memory of 4956	4260	core.exe	schtasks.exe
PID 4260 wrote to memory of 4956	4260	core.exe	schtasks.exe
PID 4260 wrote to memory of 4956	4260	core.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe
"C:\Users\Admin\AppData\Local\Temp\4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4028

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "System Core" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4944

C:\Users\Admin\AppData\Roaming\system\core.exe
"C:\Users\Admin\AppData\Roaming\system\core.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4260

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "System Core" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\system\core.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:4956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\system\core.exe
Filesize
348KB

MD5
6e5fef5da8810aa3fffad5a486c68cf3

SHA1
70f6507e9b2644fbcb75c78c6660dbdca4da5ef0

SHA256
4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa

SHA512
94dec0822aef151ec843732e9f13d550c59bb4575f8fff7822f5c2bf4d36854dc0c4061dbbcd6c2377aaac77ad86aa48092515fdc7388148e76db96f8417d027

Download Submit
C:\Users\Admin\AppData\Roaming\system\core.exe
Filesize
348KB

MD5
6e5fef5da8810aa3fffad5a486c68cf3

SHA1
70f6507e9b2644fbcb75c78c6660dbdca4da5ef0

SHA256
4e9e02f9b59d580cee08f8f3e7804f7a8f8b12c93e027ba6fd211ac4815e98fa

SHA512
94dec0822aef151ec843732e9f13d550c59bb4575f8fff7822f5c2bf4d36854dc0c4061dbbcd6c2377aaac77ad86aa48092515fdc7388148e76db96f8417d027

Download Submit
memory/4028-130-0x0000000000580000-0x00000000005DE000-memory.dmp

Filesize
376KB

Download
memory/4028-131-0x0000000005620000-0x0000000005BC4000-memory.dmp

Filesize
5.6MB

Download
memory/4028-132-0x0000000004FA0000-0x0000000005032000-memory.dmp

Filesize
584KB

Download
memory/4028-133-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/4028-134-0x0000000005DD0000-0x0000000005DE2000-memory.dmp

Filesize
72KB

Download
memory/4028-135-0x00000000063F0000-0x000000000642C000-memory.dmp

Filesize
240KB

Download
memory/4260-137-0x0000000000000000-mapping.dmp

Download
memory/4260-141-0x0000000007150000-0x000000000715A000-memory.dmp

Filesize
40KB

Download
memory/4944-136-0x0000000000000000-mapping.dmp

Download
memory/4956-140-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads