quasar | b497751b7d0e1988e1823d4153b3599f1ca3adf266cd6a6229e12443d775d655

Analysis

max time kernel
150s
max time network
157s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
29-01-2025 08:46

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General

Target

SLC.exe
Size

3.1MB
MD5

6c7cafe14c7c3e1f29c7fa5c5cb1051b
SHA1

42511e8a5aff9d3ab5681e06c73f1e2f866739b6
SHA256

b497751b7d0e1988e1823d4153b3599f1ca3adf266cd6a6229e12443d775d655
SHA512

6115aba8cfde1f6974ed4ea031757c979c4061492405c0d95158be903db6bdaaf89e11ae92844d5f2c24c8f89c650d3386af4e26c9b4427b9f04d5cc7262d0c8
SSDEEP

49152:WvEt62XlaSFNWPjljiFa2RoUYIv8RJ6ObR3LoGdZTHHB72eh2NT:WvY62XlaSFNWPjljiFXRoUYIv8RJ6I

Score

10^/10

quasar slimed spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

slimed

124.170.69.79:4782

Mutex

b3546883-bf09-4184-b0d7-93f8e2017ac3

Attributes

encryption_key
F9BD0DD063B48ED4F322D04F8B868E3F8771E29A
install_name
Client.exe
log_directory
Logs
reconnect_delay
30
startup_key
start
subdirectory
SLC

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2268-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp	family_quasar
behavioral1/files/0x002f000000018bd7-6.dat	family_quasar
behavioral1/memory/2172-9-0x0000000000E30000-0x0000000001154000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2172	Client.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2892	schtasks.exe
2488	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	SLC.exe
Token: SeDebugPrivilege	2172	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2172	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2892	2268	SLC.exe	30
PID 2268 wrote to memory of 2892	2268	SLC.exe	30
PID 2268 wrote to memory of 2892	2268	SLC.exe	30
PID 2268 wrote to memory of 2172	2268	SLC.exe	32
PID 2268 wrote to memory of 2172	2268	SLC.exe	32
PID 2268 wrote to memory of 2172	2268	SLC.exe	32
PID 2172 wrote to memory of 2488	2172	Client.exe	33
PID 2172 wrote to memory of 2488	2172	Client.exe	33
PID 2172 wrote to memory of 2488	2172	Client.exe	33

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\SLC.exe
"C:\Users\Admin\AppData\Local\Temp\SLC.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SLC\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2892
- C:\Users\Admin\AppData\Roaming\SLC\Client.exe
  "C:\Users\Admin\AppData\Roaming\SLC\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2172
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SLC\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2488

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SLC\Client.exe

Filesize
3.1MB

MD5
6c7cafe14c7c3e1f29c7fa5c5cb1051b

SHA1
42511e8a5aff9d3ab5681e06c73f1e2f866739b6

SHA256
b497751b7d0e1988e1823d4153b3599f1ca3adf266cd6a6229e12443d775d655

SHA512
6115aba8cfde1f6974ed4ea031757c979c4061492405c0d95158be903db6bdaaf89e11ae92844d5f2c24c8f89c650d3386af4e26c9b4427b9f04d5cc7262d0c8

Download Submit
memory/2172-9-0x0000000000E30000-0x0000000001154000-memory.dmp

Filesize
3.1MB

Download
memory/2172-10-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2172-11-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2172-12-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2268-0-0x000007FEF6403000-0x000007FEF6404000-memory.dmp

Filesize
4KB

Download
memory/2268-1-0x0000000000CC0000-0x0000000000FE4000-memory.dmp

Filesize
3.1MB

Download
memory/2268-2-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download
memory/2268-8-0x000007FEF6400000-0x000007FEF6DEC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads