quasar | 0f792f8eb7bfac109028240f2dad7294be0d110f70d74c62c46850362921203f

Analysis

max time kernel
126s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/01/2025, 12:03

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General

Target

ZinxE.exe
Size

3.1MB
MD5

0140172177cb3a07b943bd6402bfc3ed
SHA1

e0a84cdf6e95bd35e4a6decb2bd92a9b4e3b1906
SHA256

0f792f8eb7bfac109028240f2dad7294be0d110f70d74c62c46850362921203f
SHA512

9fceb15de82994bcc54cc4a907b572e4f87666c33f4b9bdad18056cb6c44b0aad8bc19d8b3ef6d239a51097d5e460fbac41d8a7232872f836986735894a625d4
SSDEEP

49152:2v2I22SsaNYfdPBldt698dBcjHJSv/lBxBjoGd3EtTHHB72eh2NT:2vb22SsaNYfdPBldt6+dBcjHY/vHE

Score

10^/10

quasar thee spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

thee

192.168.0.108:4782

125.25.56.200:4782

Mutex

e019a276-a66a-4019-9492-a07a85347b7f

Attributes

encryption_key
242D976031AFD7480A21D8DDA2E114B47EB747FB
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
csystem
subdirectory
SubDir

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/1796-1-0x0000000001390000-0x00000000016B4000-memory.dmp	family_quasar
behavioral1/files/0x000800000001739a-5.dat	family_quasar
behavioral1/memory/2480-10-0x0000000000320000-0x0000000000644000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2480	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
776	schtasks.exe
2864	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1796	ZinxE.exe
Token: SeDebugPrivilege	2480	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2480	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1796 wrote to memory of 776	1796	ZinxE.exe	30
PID 1796 wrote to memory of 776	1796	ZinxE.exe	30
PID 1796 wrote to memory of 776	1796	ZinxE.exe	30
PID 1796 wrote to memory of 2480	1796	ZinxE.exe	32
PID 1796 wrote to memory of 2480	1796	ZinxE.exe	32
PID 1796 wrote to memory of 2480	1796	ZinxE.exe	32
PID 2480 wrote to memory of 2864	2480	Client.exe	34
PID 2480 wrote to memory of 2864	2480	Client.exe	34
PID 2480 wrote to memory of 2864	2480	Client.exe	34

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\ZinxE.exe
"C:\Users\Admin\AppData\Local\Temp\ZinxE.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1796
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "csystem" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:776
- 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:2480
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "csystem" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2864

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\SubDir\Client.exe

Filesize
3.1MB

MD5
0140172177cb3a07b943bd6402bfc3ed

SHA1
e0a84cdf6e95bd35e4a6decb2bd92a9b4e3b1906

SHA256
0f792f8eb7bfac109028240f2dad7294be0d110f70d74c62c46850362921203f

SHA512
9fceb15de82994bcc54cc4a907b572e4f87666c33f4b9bdad18056cb6c44b0aad8bc19d8b3ef6d239a51097d5e460fbac41d8a7232872f836986735894a625d4

Download Submit
memory/1796-0-0x000007FEF5EF3000-0x000007FEF5EF4000-memory.dmp

Filesize
4KB

Download
memory/1796-1-0x0000000001390000-0x00000000016B4000-memory.dmp

Filesize
3.1MB

Download
memory/1796-2-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/1796-9-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-8-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-10-0x0000000000320000-0x0000000000644000-memory.dmp

Filesize
3.1MB

Download
memory/2480-11-0x000007FEF5EF0000-0x000007FEF68DC000-memory.dmp

Filesize
9.9MB

Download
memory/2480-12-0x000007FEF5EF0000-0x000007FEF68DC000-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