quasar | 1b493ad1ab765e7f0509c8928a3466754f64ad5728f79139a66effcb38d5cb67

Resubmissions

19-05-2024 20:07

240519-ywdftsff3z 10

Analysis

max time kernel
53s
max time network
61s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
19-05-2024 20:07

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General

Target

python-3.12.3-amd64.exe
Size

3.1MB
MD5

73d6940261ca10935db227bc344dfc8f
SHA1

d98e8c5b877d69a1de46a1c9188358fe802fb056
SHA256

1b493ad1ab765e7f0509c8928a3466754f64ad5728f79139a66effcb38d5cb67
SHA512

1928e0702140694fc54cfae2e784a752650a5a92c7858c1bb460beca6e02fa7cf87e767793f04139abd9cf328a6eed56652de3c98c59e0f51d64ea6e6fd412a2
SSDEEP

49152:Cvkt62XlaSFNWPjljiFa2RoUYIPSRJ6ebR3LoGd7THHB72eh2NT:Cv462XlaSFNWPjljiFXRoUYIPSRJ6Y

Score

10^/10

quasar python spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Python

5.39.43.50:1488

Mutex

393fbc9d-531f-4025-b3f0-bed4d56f6ed3

Attributes

encryption_key
1E01F0D74E189002EDB2FABC8EC064751C9D7A63
install_name
Python.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Python3
subdirectory
Python3

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4168-1-0x0000000000D40000-0x0000000001064000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\Python3\Python.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Python.exe

pid process

908 Python.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

2328 schtasks.exe
3860 schtasks.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

python-3.12.3-amd64.exePython.exewhoami.exe

description pid process

Token: SeDebugPrivilege 4168 python-3.12.3-amd64.exe
Token: SeDebugPrivilege 908 Python.exe
Token: SeDebugPrivilege 4304 whoami.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Python.exe

pid process

908 Python.exe

pid	process
908	Python.exe

pid	process
2328	schtasks.exe
3860	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	4168	python-3.12.3-amd64.exe
Token: SeDebugPrivilege	908	Python.exe
Token: SeDebugPrivilege	4304	whoami.exe

pid	process
908	Python.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

python-3.12.3-amd64.exePython.execmd.exe

description	pid	process	target process
PID 4168 wrote to memory of 2328	4168	python-3.12.3-amd64.exe	schtasks.exe
PID 4168 wrote to memory of 2328	4168	python-3.12.3-amd64.exe	schtasks.exe
PID 4168 wrote to memory of 908	4168	python-3.12.3-amd64.exe	Python.exe
PID 4168 wrote to memory of 908	4168	python-3.12.3-amd64.exe	Python.exe
PID 908 wrote to memory of 3860	908	Python.exe	schtasks.exe
PID 908 wrote to memory of 3860	908	Python.exe	schtasks.exe
PID 908 wrote to memory of 228	908	Python.exe	cmd.exe
PID 908 wrote to memory of 228	908	Python.exe	cmd.exe
PID 228 wrote to memory of 2612	228	cmd.exe	chcp.com
PID 228 wrote to memory of 2612	228	cmd.exe	chcp.com
PID 228 wrote to memory of 4304	228	cmd.exe	whoami.exe
PID 228 wrote to memory of 4304	228	cmd.exe	whoami.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\python-3.12.3-amd64.exe
"C:\Users\Admin\AppData\Local\Temp\python-3.12.3-amd64.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4168

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Python3" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Python3\Python.exe" /rl HIGHEST /f
2⤵
- Creates scheduled task(s)
PID:2328

C:\Users\Admin\AppData\Roaming\Python3\Python.exe
"C:\Users\Admin\AppData\Roaming\Python3\Python.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Python3" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Python3\Python.exe" /rl HIGHEST /f
3⤵
- Creates scheduled task(s)
PID:3860

C:\Windows\SYSTEM32\cmd.exe
"cmd" /K CHCP 437
3⤵
- Suspicious use of WriteProcessMemory
PID:228

C:\Windows\system32\chcp.com
CHCP 437
4⤵
PID:2612

C:\Windows\system32\whoami.exe
whoami
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:4304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Python3\Python.exe

Filesize
3.1MB

MD5
73d6940261ca10935db227bc344dfc8f

SHA1
d98e8c5b877d69a1de46a1c9188358fe802fb056

SHA256
1b493ad1ab765e7f0509c8928a3466754f64ad5728f79139a66effcb38d5cb67

SHA512
1928e0702140694fc54cfae2e784a752650a5a92c7858c1bb460beca6e02fa7cf87e767793f04139abd9cf328a6eed56652de3c98c59e0f51d64ea6e6fd412a2

Download Submit
memory/908-11-0x00007FFF9E760000-0x00007FFF9F221000-memory.dmp

Filesize
10.8MB

Download
memory/908-10-0x00007FFF9E760000-0x00007FFF9F221000-memory.dmp

Filesize
10.8MB

Download
memory/908-12-0x000000001B760000-0x000000001B7B0000-memory.dmp

Filesize
320KB

Download
memory/908-13-0x000000001B870000-0x000000001B922000-memory.dmp

Filesize
712KB

Download
memory/908-16-0x000000001B7E0000-0x000000001B7F2000-memory.dmp

Filesize
72KB

Download
memory/908-17-0x000000001BF70000-0x000000001BFAC000-memory.dmp

Filesize
240KB

Download
memory/908-18-0x00007FFF9E760000-0x00007FFF9F221000-memory.dmp

Filesize
10.8MB

Download
memory/908-19-0x000000001CAE0000-0x000000001D008000-memory.dmp

Filesize
5.2MB

Download
memory/908-21-0x000000001C3F0000-0x000000001C599000-memory.dmp

Filesize
1.7MB

Download
memory/4168-2-0x00007FFF9E760000-0x00007FFF9F221000-memory.dmp

Filesize
10.8MB

Download
memory/4168-1-0x0000000000D40000-0x0000000001064000-memory.dmp

Filesize
3.1MB

Download
memory/4168-9-0x00007FFF9E760000-0x00007FFF9F221000-memory.dmp

Filesize
10.8MB

Download
memory/4168-0-0x00007FFF9E763000-0x00007FFF9E765000-memory.dmp

Filesize
8KB

Download