quasar | d52810d59dcc0f3c448941207cd1c62ebcf7c096613db2422179e2a0d1e6f6d8

General

Target

Client-built.exe
Size

3.1MB
MD5

b08447d3d65d6378339c7a9836c53b32
SHA1

6b15e2cfa3080b825aa0c9e84649d9ba1bcbfc7c
SHA256

d52810d59dcc0f3c448941207cd1c62ebcf7c096613db2422179e2a0d1e6f6d8
SHA512

a1a49c87c99d5ea0b506d43e855e4abd32d77108636d1d488e8acef0aa24c74e8352f7a034f12e7f32b09674be8d7a88af245905533123bc7f363f9a99db2f09
SSDEEP

49152:bvylL26AaNeWgPhlmVqvMQ7XSKsCm1JTLoGdiTHHB72eh2NT:bvqL26AaNeWgPhlmVqkQ7XSKsC2

Score

10^/10

quasar tutorial spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

tutorial

C2

FartGaming-22249.portmap.host:22249

Mutex

4d1902df-e7f6-4600-8451-58c97c590990

Attributes

encryption_key
4806609BA25461872268CE64CAE8C71D1E7E632F
install_name
TmpSpoofer.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Temp HWID Spoofer
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/2060-1-0x0000000000A20000-0x0000000000D44000-memory.dmp	family_quasar
behavioral1/files/0x00090000000173fc-4.dat	family_quasar
behavioral1/memory/2816-8-0x0000000000D10000-0x0000000001034000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2816	TmpSpoofer.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
1036	schtasks.exe
2716	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2060	Client-built.exe
Token: SeDebugPrivilege	2816	TmpSpoofer.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2816	TmpSpoofer.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2816	TmpSpoofer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2816	TmpSpoofer.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 1036	2060	Client-built.exe	31
PID 2060 wrote to memory of 1036	2060	Client-built.exe	31
PID 2060 wrote to memory of 1036	2060	Client-built.exe	31
PID 2060 wrote to memory of 2816	2060	Client-built.exe	33
PID 2060 wrote to memory of 2816	2060	Client-built.exe	33
PID 2060 wrote to memory of 2816	2060	Client-built.exe	33
PID 2816 wrote to memory of 2716	2816	TmpSpoofer.exe	34
PID 2816 wrote to memory of 2716	2816	TmpSpoofer.exe	34
PID 2816 wrote to memory of 2716	2816	TmpSpoofer.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\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2060
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Temp HWID Spoofer" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\TmpSpoofer.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1036
- C:\Users\Admin\AppData\Roaming\SubDir\TmpSpoofer.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\TmpSpoofer.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Temp HWID Spoofer" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\TmpSpoofer.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2716

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

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\TmpSpoofer.exe

Filesize
3.1MB

MD5
b08447d3d65d6378339c7a9836c53b32

SHA1
6b15e2cfa3080b825aa0c9e84649d9ba1bcbfc7c

SHA256
d52810d59dcc0f3c448941207cd1c62ebcf7c096613db2422179e2a0d1e6f6d8

SHA512
a1a49c87c99d5ea0b506d43e855e4abd32d77108636d1d488e8acef0aa24c74e8352f7a034f12e7f32b09674be8d7a88af245905533123bc7f363f9a99db2f09

Download Submit
memory/2060-0-0x000007FEF5D33000-0x000007FEF5D34000-memory.dmp

Filesize
4KB

Download
memory/2060-1-0x0000000000A20000-0x0000000000D44000-memory.dmp

Filesize
3.1MB

Download
memory/2060-2-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2060-9-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-7-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-10-0x000007FEF5D30000-0x000007FEF671C000-memory.dmp

Filesize
9.9MB

Download
memory/2816-8-0x0000000000D10000-0x0000000001034000-memory.dmp

Filesize
3.1MB

Download
memory/2816-11-0x000007FEF5D30000-0x000007FEF671C000-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