quasar | 1b493ad1ab765e7f0509c8928a3466754f64ad5728f79139a66effcb38d5cb67

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

C2

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
behavioral1/memory/3936-1-0x0000000000F30000-0x0000000001254000-memory.dmp	family_quasar
C:\Users\Admin\AppData\Roaming\Python3\Python.exe	family_quasar

Executes dropped EXE 1 IoCs

Processes:

Python.exe

pid process

2736 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

3676 schtasks.exe
3636 schtasks.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

python-3.12.3-amd64.exePython.exe

description pid process

Token: SeDebugPrivilege 3936 python-3.12.3-amd64.exe
Token: SeDebugPrivilege 2736 Python.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Python.exe

pid process

2736 Python.exe

pid	process
2736	Python.exe

pid	process
3676	schtasks.exe
3636	schtasks.exe

description	pid	process
Token: SeDebugPrivilege	3936	python-3.12.3-amd64.exe
Token: SeDebugPrivilege	2736	Python.exe

pid	process
2736	Python.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

python-3.12.3-amd64.exePython.exe

description	pid	process	target process
PID 3936 wrote to memory of 3676	3936	python-3.12.3-amd64.exe	schtasks.exe
PID 3936 wrote to memory of 3676	3936	python-3.12.3-amd64.exe	schtasks.exe
PID 3936 wrote to memory of 2736	3936	python-3.12.3-amd64.exe	Python.exe
PID 3936 wrote to memory of 2736	3936	python-3.12.3-amd64.exe	Python.exe
PID 2736 wrote to memory of 3636	2736	Python.exe	schtasks.exe
PID 2736 wrote to memory of 3636	2736	Python.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\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:3936

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:3676

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:2736

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:3636

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3992 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:2880

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3732 --field-trial-handle=2276,i,5697607538120380977,9987005253899555344,262144 --variations-seed-version /prefetch:8
1⤵
PID:4972

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\Roaming\Python3\Python.exe
Filesize
3.1MB

MD5
73d6940261ca10935db227bc344dfc8f

SHA1
d98e8c5b877d69a1de46a1c9188358fe802fb056

SHA256
1b493ad1ab765e7f0509c8928a3466754f64ad5728f79139a66effcb38d5cb67

SHA512
1928e0702140694fc54cfae2e784a752650a5a92c7858c1bb460beca6e02fa7cf87e767793f04139abd9cf328a6eed56652de3c98c59e0f51d64ea6e6fd412a2

Download Submit
memory/2736-10-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/2736-11-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/2736-12-0x000000001B1B0000-0x000000001B200000-memory.dmp

Filesize
320KB

Download
memory/2736-13-0x000000001BAE0000-0x000000001BB92000-memory.dmp

Filesize
712KB

Download
memory/2736-14-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/2736-15-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3936-0-0x00007FF971183000-0x00007FF971185000-memory.dmp

Filesize
8KB

Download
memory/3936-1-0x0000000000F30000-0x0000000001254000-memory.dmp

Filesize
3.1MB

Download
memory/3936-2-0x00007FF971180000-0x00007FF971C41000-memory.dmp

Filesize
10.8MB

Download
memory/3936-9-0x00007FF971180000-0x00007FF971C41000-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