quasar | 5ab1aac03c053e025319aac9bbe317a163d56bf4657819c6a43ffb97099ec322

General

Target

7411c8d36761ca9edc88373cfc7a3cb7.exe
Size

347KB
MD5

7411c8d36761ca9edc88373cfc7a3cb7
SHA1

8b31d6b61ee03da19817d3ffd59c0aa41ef32d81
SHA256

5ab1aac03c053e025319aac9bbe317a163d56bf4657819c6a43ffb97099ec322
SHA512

37f29a792ca641f29144032575f7f42ced5345c541cbdad33e935ef7b5b70d6b5623196596587be95ef00a86a58d604c295c1fcc4a9b159b80cc273fe1623342

Score

10^/10

quasar success spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

SUCCESS

C2

jerenyankipong.duckdns.org:4782

Mutex

MUTEX_jh9iPmixBt74IpSqEj

Attributes

encryption_key
uO9yacYVMmi8921rParX
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
cmd
subdirectory
SubDir

Signatures

Quasar Payload 6 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2664-115-0x0000000000D60000-0x0000000000DBE000-memory.dmp	family_quasar
behavioral2/memory/2664-116-0x0000000000D60000-0x0000000000DBE000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe	family_quasar
behavioral2/memory/3516-128-0x0000000000A30000-0x0000000000A8E000-memory.dmp	family_quasar
behavioral2/memory/3516-127-0x0000000000A30000-0x0000000000A8E000-memory.dmp	family_quasar

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Executes dropped EXE 1 IoCs

Processes:

Client.exe

pid process

3516 Client.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

18 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

1236 schtasks.exe
3572 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

7411c8d36761ca9edc88373cfc7a3cb7.exeClient.exe

description pid process

Token: SeDebugPrivilege 2664 7411c8d36761ca9edc88373cfc7a3cb7.exe
Token: SeDebugPrivilege 3516 Client.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Client.exe

pid process

3516 Client.exe

pid	process
3516	Client.exe

flow	ioc
18	ip-api.com

pid	process
1236	schtasks.exe
3572	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe
Token: SeDebugPrivilege	3516	Client.exe

pid	process
3516	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

7411c8d36761ca9edc88373cfc7a3cb7.exeClient.exe

description	pid	process	target process
PID 2664 wrote to memory of 1236	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	schtasks.exe
PID 2664 wrote to memory of 1236	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	schtasks.exe
PID 2664 wrote to memory of 1236	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	schtasks.exe
PID 2664 wrote to memory of 3516	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	Client.exe
PID 2664 wrote to memory of 3516	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	Client.exe
PID 2664 wrote to memory of 3516	2664	7411c8d36761ca9edc88373cfc7a3cb7.exe	Client.exe
PID 3516 wrote to memory of 3572	3516	Client.exe	schtasks.exe
PID 3516 wrote to memory of 3572	3516	Client.exe	schtasks.exe
PID 3516 wrote to memory of 3572	3516	Client.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\7411c8d36761ca9edc88373cfc7a3cb7.exe
"C:\Users\Admin\AppData\Local\Temp\7411c8d36761ca9edc88373cfc7a3cb7.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2664

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "cmd" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\7411c8d36761ca9edc88373cfc7a3cb7.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:1236

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3516

C:\Windows\SysWOW64\schtasks.exe
"schtasks" /create /tn "cmd" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3572

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\SubDir\Client.exe
MD5
7411c8d36761ca9edc88373cfc7a3cb7

SHA1
8b31d6b61ee03da19817d3ffd59c0aa41ef32d81

SHA256
5ab1aac03c053e025319aac9bbe317a163d56bf4657819c6a43ffb97099ec322

SHA512
37f29a792ca641f29144032575f7f42ced5345c541cbdad33e935ef7b5b70d6b5623196596587be95ef00a86a58d604c295c1fcc4a9b159b80cc273fe1623342

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
MD5
7411c8d36761ca9edc88373cfc7a3cb7

SHA1
8b31d6b61ee03da19817d3ffd59c0aa41ef32d81

SHA256
5ab1aac03c053e025319aac9bbe317a163d56bf4657819c6a43ffb97099ec322

SHA512
37f29a792ca641f29144032575f7f42ced5345c541cbdad33e935ef7b5b70d6b5623196596587be95ef00a86a58d604c295c1fcc4a9b159b80cc273fe1623342

Download Submit
memory/1236-123-0x0000000000000000-mapping.dmp

Download
memory/2664-120-0x0000000005F80000-0x0000000005FE6000-memory.dmp

Filesize
408KB

Download
memory/2664-116-0x0000000000D60000-0x0000000000DBE000-memory.dmp

Filesize
376KB

Download
memory/2664-115-0x0000000000D60000-0x0000000000DBE000-memory.dmp

Filesize
376KB

Download
memory/2664-121-0x0000000006570000-0x0000000006582000-memory.dmp

Filesize
72KB

Download
memory/2664-122-0x0000000006960000-0x000000000699E000-memory.dmp

Filesize
248KB

Download
memory/2664-118-0x00000000056B0000-0x0000000005742000-memory.dmp

Filesize
584KB

Download
memory/2664-119-0x0000000005580000-0x0000000005A7E000-memory.dmp

Filesize
5.0MB

Download
memory/2664-117-0x0000000005A80000-0x0000000005F7E000-memory.dmp

Filesize
5.0MB

Download
memory/3516-128-0x0000000000A30000-0x0000000000A8E000-memory.dmp

Filesize
376KB

Download
memory/3516-124-0x0000000000000000-mapping.dmp

Download
memory/3516-127-0x0000000000A30000-0x0000000000A8E000-memory.dmp

Filesize
376KB

Download
memory/3516-129-0x00000000057C0000-0x0000000005CBE000-memory.dmp

Filesize
5.0MB

Download
memory/3516-130-0x0000000005360000-0x00000000053F2000-memory.dmp

Filesize
584KB

Download
memory/3516-131-0x0000000005280000-0x0000000005281000-memory.dmp

Filesize
4KB

Download
memory/3516-132-0x0000000005500000-0x0000000005566000-memory.dmp

Filesize
408KB

Download
memory/3516-133-0x00000000061A0000-0x00000000061B2000-memory.dmp

Filesize
72KB

Download
memory/3516-134-0x0000000006570000-0x00000000065AE000-memory.dmp

Filesize
248KB

Download
memory/3516-136-0x00000000068E0000-0x00000000068EA000-memory.dmp

Filesize
40KB

Download
memory/3572-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads