quasar | 4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675

General

Target

4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
Size

3.1MB
MD5

69b4286cd2963d3c89f35fdec630576c
SHA1

ea2a6274c2b8b866e91b72c3baa8f3162db92388
SHA256

4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675
SHA512

2e6b0952e08af312a56b355fd1f24384162c54dd0e9c091d476311642c6321184f586695955a879be9e118b9ace3ce77e629fac94b480c37b2da26845c059841
SSDEEP

49152:av/lL26AaNeWgPhlmVqvMQ7XSKPHgMtDw48coGdMTHHB72eh2NT6:avNL26AaNeWgPhlmVqkQ7XSKPAMJY

Score

10^/10

quasar database spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

database

C2

91.160.181.237:4782

91.160.181.237:4783

Mutex

bcda0faa-47b1-4e7d-be7c-8ff6fbc69a61

Attributes

encryption_key
65940F11374651C87E8131C4328E542AEFE6F05D
install_name
Runtlme Broker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Runtlme Broker
subdirectory
Runtlme Broker

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/576-1-0x0000000000F90000-0x00000000012B4000-memory.dmp	family_quasar
behavioral1/files/0x0008000000019461-5.dat	family_quasar
behavioral1/memory/3024-9-0x00000000010B0000-0x00000000013D4000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3024	Runtlme Broker.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
File opened for modification	C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
File opened for modification	C:\Windows\system32\Runtlme Broker	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
File opened for modification	C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe	Runtlme Broker.exe
File opened for modification	C:\Windows\system32\Runtlme Broker	Runtlme Broker.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
2016	schtasks.exe
2132	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
Token: SeDebugPrivilege	3024	Runtlme Broker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3024	Runtlme Broker.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 576 wrote to memory of 2016	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	31
PID 576 wrote to memory of 2016	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	31
PID 576 wrote to memory of 2016	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	31
PID 576 wrote to memory of 3024	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	33
PID 576 wrote to memory of 3024	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	33
PID 576 wrote to memory of 3024	576	4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe	33
PID 3024 wrote to memory of 2132	3024	Runtlme Broker.exe	34
PID 3024 wrote to memory of 2132	3024	Runtlme Broker.exe	34
PID 3024 wrote to memory of 2132	3024	Runtlme Broker.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\4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe
"C:\Users\Admin\AppData\Local\Temp\4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:576
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Runtlme Broker" /sc ONLOGON /tr "C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2016
- C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe
  "C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3024
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Runtlme Broker" /sc ONLOGON /tr "C:\Windows\system32\Runtlme Broker\Runtlme Broker.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2132

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:\Windows\System32\Runtlme Broker\Runtlme Broker.exe

Filesize
3.1MB

MD5
69b4286cd2963d3c89f35fdec630576c

SHA1
ea2a6274c2b8b866e91b72c3baa8f3162db92388

SHA256
4aa3e2e4f7c2d657bcbebe307a15ab4dee819e3d70fec4e92b78fd483690e675

SHA512
2e6b0952e08af312a56b355fd1f24384162c54dd0e9c091d476311642c6321184f586695955a879be9e118b9ace3ce77e629fac94b480c37b2da26845c059841

Download Submit
memory/576-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/576-1-0x0000000000F90000-0x00000000012B4000-memory.dmp

Filesize
3.1MB

Download
memory/576-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/576-10-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-8-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-9-0x00000000010B0000-0x00000000013D4000-memory.dmp

Filesize
3.1MB

Download
memory/3024-11-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/3024-12-0x000007FEF5EA0000-0x000007FEF688C000-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