quasar | 229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f

General

Target

229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe
Size

348KB
MD5

3d18b8eed380078fd6b8790335ef6ebf
SHA1

f1f1062cb7b3ed5b7eacb535531e45f1592b7ebf
SHA256

229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f
SHA512

a1ae71cc2892db5b1da6c95da0ad222eb224512212c778c6c3e548c63b19b42346d25e997358c092f3d5d0b77b026db3fcf70c4d95448043a7d38a7d0531e9df
SSDEEP

6144:B16bPXhLApfpbl/FRMTogMH/pbBGIOM9h9+GPw0hXm:LmhApD/MwCIOM0j0hXm

Score

10^/10

quasar alina discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

ALINA

C2

youtubevideos.duckdns.org:10

Mutex

QSR_MUTEX_in9VG8pkDSHQVhS3MQ

Attributes

encryption_key
e902XsAGKQ0V47TRmpUl
install_name
csrsss.exe
log_directory
Logs
reconnect_delay
3000
startup_key
csrss
subdirectory
Suberrors

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/2072-1-0x0000000000AC0000-0x0000000000B1E000-memory.dmp	family_quasar
behavioral1/files/0x0008000000016d4e-5.dat	family_quasar
behavioral1/memory/2288-12-0x0000000000D50000-0x0000000000DAE000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2288	csrsss.exe

Loads dropped DLL 1 IoCs

pid	Process
2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.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
2	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	csrsss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
624	schtasks.exe
1172	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe
Token: SeDebugPrivilege	2288	csrsss.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2288	csrsss.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 624	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	31
PID 2072 wrote to memory of 624	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	31
PID 2072 wrote to memory of 624	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	31
PID 2072 wrote to memory of 624	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	31
PID 2072 wrote to memory of 2288	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	33
PID 2072 wrote to memory of 2288	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	33
PID 2072 wrote to memory of 2288	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	33
PID 2072 wrote to memory of 2288	2072	229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe	33
PID 2288 wrote to memory of 1172	2288	csrsss.exe	34
PID 2288 wrote to memory of 1172	2288	csrsss.exe	34
PID 2288 wrote to memory of 1172	2288	csrsss.exe	34
PID 2288 wrote to memory of 1172	2288	csrsss.exe	34

C:\Users\Admin\AppData\Local\Temp\229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe
"C:\Users\Admin\AppData\Local\Temp\229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks" /create /tn "csrss" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f.exe" /rl HIGHEST /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:624
- C:\Users\Admin\AppData\Roaming\Suberrors\csrsss.exe
  "C:\Users\Admin\AppData\Roaming\Suberrors\csrsss.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "csrss" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Suberrors\csrsss.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1172

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

\Users\Admin\AppData\Roaming\Suberrors\csrsss.exe

Filesize
348KB

MD5
3d18b8eed380078fd6b8790335ef6ebf

SHA1
f1f1062cb7b3ed5b7eacb535531e45f1592b7ebf

SHA256
229facbf155b85681dbbe760530e79401e30f8cca917c1c93657d2bd7dd3390f

SHA512
a1ae71cc2892db5b1da6c95da0ad222eb224512212c778c6c3e548c63b19b42346d25e997358c092f3d5d0b77b026db3fcf70c4d95448043a7d38a7d0531e9df

Download Submit
memory/2072-0-0x00000000740CE000-0x00000000740CF000-memory.dmp

Filesize
4KB

Download
memory/2072-1-0x0000000000AC0000-0x0000000000B1E000-memory.dmp

Filesize
376KB

Download
memory/2072-2-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2072-11-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2288-10-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2288-13-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2288-12-0x0000000000D50000-0x0000000000DAE000-memory.dmp

Filesize
376KB

Download
memory/2288-15-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads