quasar | 600920f492a2bed6dd636efa706f7b7fde6043e3189156281ef3a9fbca534180

General

Target

FivemCheat.exe
Size

3.1MB
MD5

60a612de44dbb71958d82422ff819e7b
SHA1

0c7f623b0b30e76427d199412b8393105abea13b
SHA256

9cbd8ea7f253ce4f8f8d2acaae5eee3d2c1c623ccccd0d82760a86c2a3ef80ed
SHA512

4560ecb28ad10657f92144453bdefb3c0a753e9be71a1ef69fba6c16d0e09944c9b0b2b014d410d8bdc50e2427a10e883b4e1e9a78b072fa63053941c088984c
SSDEEP

49152:3vyI22SsaNYfdPBldt698dBcjHq23iqwarkgoGdQ6THHB72eh2NT:3vf22SsaNYfdPBldt6+dBcjH3yqx

Score

10^/10

quasar fivemcheat5 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

FivemCheat5

C2

192.168.1.12:1234

Mutex

1a903210-dd7d-4b58-a38f-bf1da0e142cf

Attributes

encryption_key
BA39EAF72B9F53A37268DA8C4407CF8E66D97AB3
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
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
behavioral4/memory/2780-1-0x0000000000D30000-0x0000000001054000-memory.dmp	family_quasar
behavioral4/memory/2828-8-0x00000000009A0000-0x0000000000CC4000-memory.dmp	family_quasar
behavioral4/files/0x0032000000017474-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2828	Client.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\SubDir\Client.exe	FivemCheat.exe
File opened for modification	C:\Program Files\SubDir\Client.exe	FivemCheat.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
3060	schtasks.exe
2724	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	FivemCheat.exe
Token: SeDebugPrivilege	2828	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	Client.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 3060	2780	FivemCheat.exe	30
PID 2780 wrote to memory of 3060	2780	FivemCheat.exe	30
PID 2780 wrote to memory of 3060	2780	FivemCheat.exe	30
PID 2780 wrote to memory of 2828	2780	FivemCheat.exe	32
PID 2780 wrote to memory of 2828	2780	FivemCheat.exe	32
PID 2780 wrote to memory of 2828	2780	FivemCheat.exe	32
PID 2828 wrote to memory of 2724	2828	Client.exe	33
PID 2828 wrote to memory of 2724	2828	Client.exe	33
PID 2828 wrote to memory of 2724	2828	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\FivemCheat.exe
"C:\Users\Admin\AppData\Local\Temp\FivemCheat.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3060
- C:\Program Files\SubDir\Client.exe
  "C:\Program Files\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2828
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Program Files\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2724

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files\SubDir\Client.exe

Filesize
3.1MB

MD5
60a612de44dbb71958d82422ff819e7b

SHA1
0c7f623b0b30e76427d199412b8393105abea13b

SHA256
9cbd8ea7f253ce4f8f8d2acaae5eee3d2c1c623ccccd0d82760a86c2a3ef80ed

SHA512
4560ecb28ad10657f92144453bdefb3c0a753e9be71a1ef69fba6c16d0e09944c9b0b2b014d410d8bdc50e2427a10e883b4e1e9a78b072fa63053941c088984c

Download Submit
memory/2780-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

Filesize
4KB

Download
memory/2780-1-0x0000000000D30000-0x0000000001054000-memory.dmp

Filesize
3.1MB

Download
memory/2780-2-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2780-7-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-9-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-8-0x00000000009A0000-0x0000000000CC4000-memory.dmp

Filesize
3.1MB

Download
memory/2828-10-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download
memory/2828-11-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads