quasar | f0160a1f7a39862e14063ac468957559656405f51d97ad56dc7cff9ad34da9f1

General

Target

Synapse X Launcher.exe
Size

3.1MB
MD5

1a1fda92143e414b4d4153ab05dd1ce8
SHA1

33ac2b2d228a1ec93b0ea70ffadb436933b9a1e5
SHA256

f0160a1f7a39862e14063ac468957559656405f51d97ad56dc7cff9ad34da9f1
SHA512

70a9a6948f98f3bdc2c7b461634098347bdf683dec36fa92bd1ac652f72daf7fa01f842cbb8331f26c9c5f76907604f75f7c45b746bcfe8f395b3864f998f391
SSDEEP

49152:VvnI22SsaNYfdPBldt698dBcjHOaRJ6HbR3LoGddPkTHHB72eh2NT:VvI22SsaNYfdPBldt6+dBcjHOaRJ6Zd

Score

10^/10

quasar windows update spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Windows Update

C2

skbidiooiilet-31205.portmap.host:31205

Mutex

7357b58d-e5d4-42be-8b74-db6eee6cde6d

Attributes

encryption_key
6F721445F7E0B1CF58980D84A9D49F4458D4EFD9
install_name
Update.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WindowsUpdate
subdirectory
Windows Update

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2024-1-0x0000000000290000-0x00000000005B4000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Update.exe

pid process

1176 Update.exe
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/Job
T1053

Processes:

schtasks.exeschtasks.exe

pid process

4980 schtasks.exe
2752 schtasks.exe

pid	process
1176	Update.exe

pid	process
4980	schtasks.exe
2752	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Synapse X Launcher.exeUpdate.exeSynapse X Launcher.exe

description	pid	process
Token: SeDebugPrivilege	2024	Synapse X Launcher.exe
Token: SeDebugPrivilege	1176	Update.exe
Token: SeDebugPrivilege	4156	Synapse X Launcher.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Synapse X Launcher.exeUpdate.exe

description	pid	process	target process
PID 2024 wrote to memory of 4980	2024	Synapse X Launcher.exe	schtasks.exe
PID 2024 wrote to memory of 4980	2024	Synapse X Launcher.exe	schtasks.exe
PID 2024 wrote to memory of 1176	2024	Synapse X Launcher.exe	Update.exe
PID 2024 wrote to memory of 1176	2024	Synapse X Launcher.exe	Update.exe
PID 1176 wrote to memory of 2752	1176	Update.exe	schtasks.exe
PID 1176 wrote to memory of 2752	1176	Update.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:\Users\Admin\AppData\Local\Temp\Synapse X Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Synapse X Launcher.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2024

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:4980

C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe
"C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1176

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:2752

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:4708

C:\Users\Admin\AppData\Local\Temp\Synapse X Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Synapse X Launcher.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4156

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

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Synapse X Launcher.exe.log

Filesize
1KB

MD5
baf55b95da4a601229647f25dad12878

SHA1
abc16954ebfd213733c4493fc1910164d825cac8

SHA256
ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924

SHA512
24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Update\Update.exe

Filesize
3.1MB

MD5
1a1fda92143e414b4d4153ab05dd1ce8

SHA1
33ac2b2d228a1ec93b0ea70ffadb436933b9a1e5

SHA256
f0160a1f7a39862e14063ac468957559656405f51d97ad56dc7cff9ad34da9f1

SHA512
70a9a6948f98f3bdc2c7b461634098347bdf683dec36fa92bd1ac652f72daf7fa01f842cbb8331f26c9c5f76907604f75f7c45b746bcfe8f395b3864f998f391

Download Submit
memory/1176-10-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

Filesize
10.8MB

Download
memory/1176-11-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

Filesize
10.8MB

Download
memory/1176-12-0x000000001BE70000-0x000000001BEC0000-memory.dmp

Filesize
320KB

Download
memory/1176-13-0x000000001BF80000-0x000000001C032000-memory.dmp

Filesize
712KB

Download
memory/1176-14-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

Filesize
10.8MB

Download
memory/2024-0-0x00007FF8E95B3000-0x00007FF8E95B5000-memory.dmp

Filesize
8KB

Download
memory/2024-1-0x0000000000290000-0x00000000005B4000-memory.dmp

Filesize
3.1MB

Download
memory/2024-2-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

Filesize
10.8MB

Download
memory/2024-9-0x00007FF8E95B0000-0x00007FF8EA071000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads