quasar | 6eea566794504979f9fa4d75285751f49afde178ad8a0cdfb81fceec9ebb2eb9

General

Target

Authenticator.exe
Size

375KB
MD5

85b43fd8aa9d8b09b8613f2fa47c6bb0
SHA1

3729c0739c24b7ed9fda30684173a869c7398e80
SHA256

6eea566794504979f9fa4d75285751f49afde178ad8a0cdfb81fceec9ebb2eb9
SHA512

2898dc0c44a6543136281cf0bbdc03c3cc958098366773fc31ab047c2819e9df3d2b5596ded0d9a2811d915d4ced0404494dfa3381572c56dda9bf2772706ef2
SSDEEP

6144:YbqQ4i1FFiEKZVSQZzs5jQKbgQ203StbjjSQkzaozVVqH:CpliPScgCy73StbjjSQkVzV0H

Score

10^/10

quasar authenticator discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Authenticator

C2

iamaskibiditoilet-58299.portmap.host:58299

Mutex

QSR_MUTEX_bNzknSVeSVx21JnqhQ

Attributes

encryption_key
wAIAzlOLR0d5V3YI1aCM
install_name
Runtime Broker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Runtime Broker
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/2524-1-0x0000000000ED0000-0x0000000000F34000-memory.dmp	family_quasar
behavioral2/files/0x000a000000023b69-11.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3528	Runtime Broker.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
14	ip-api.com

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Runtime Broker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Authenticator.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
2896	schtasks.exe
4304	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2524	Authenticator.exe
Token: SeDebugPrivilege	3528	Runtime Broker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3528	Runtime Broker.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2896	2524	Authenticator.exe	83
PID 2524 wrote to memory of 2896	2524	Authenticator.exe	83
PID 2524 wrote to memory of 2896	2524	Authenticator.exe	83
PID 2524 wrote to memory of 3528	2524	Authenticator.exe	85
PID 2524 wrote to memory of 3528	2524	Authenticator.exe	85
PID 2524 wrote to memory of 3528	2524	Authenticator.exe	85
PID 3528 wrote to memory of 4304	3528	Runtime Broker.exe	86
PID 3528 wrote to memory of 4304	3528	Runtime Broker.exe	86
PID 3528 wrote to memory of 4304	3528	Runtime Broker.exe	86

C:\Users\Admin\AppData\Local\Temp\Authenticator.exe
"C:\Users\Admin\AppData\Local\Temp\Authenticator.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Authenticator.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2896
- C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3528
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Runtime Broker" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4304

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Runtime Broker.exe

Filesize
375KB

MD5
85b43fd8aa9d8b09b8613f2fa47c6bb0

SHA1
3729c0739c24b7ed9fda30684173a869c7398e80

SHA256
6eea566794504979f9fa4d75285751f49afde178ad8a0cdfb81fceec9ebb2eb9

SHA512
2898dc0c44a6543136281cf0bbdc03c3cc958098366773fc31ab047c2819e9df3d2b5596ded0d9a2811d915d4ced0404494dfa3381572c56dda9bf2772706ef2

Download Submit
memory/2524-6-0x0000000005FA0000-0x0000000005FB2000-memory.dmp

Filesize
72KB

Download
memory/2524-2-0x0000000005FE0000-0x0000000006584000-memory.dmp

Filesize
5.6MB

Download
memory/2524-3-0x0000000005960000-0x00000000059F2000-memory.dmp

Filesize
584KB

Download
memory/2524-4-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/2524-5-0x0000000005A30000-0x0000000005A96000-memory.dmp

Filesize
408KB

Download
memory/2524-0-0x000000007522E000-0x000000007522F000-memory.dmp

Filesize
4KB

Download
memory/2524-7-0x0000000006B90000-0x0000000006BCC000-memory.dmp

Filesize
240KB

Download
memory/2524-1-0x0000000000ED0000-0x0000000000F34000-memory.dmp

Filesize
400KB

Download
memory/2524-14-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-15-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-16-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download
memory/3528-18-0x0000000006500000-0x000000000650A000-memory.dmp

Filesize
40KB

Download
memory/3528-19-0x0000000075220000-0x00000000759D0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads