quasar | 2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f

General

Target

2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
Size

3.1MB
MD5

fbea67e43074abf3a3524c5110e933d4
SHA1

2fb7d4fd691be43f1420bc62556744264d43d391
SHA256

2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f
SHA512

e0e5ca07f0c78c000a9979d533febc9e64f9f4373d1499acad5a39349285fa56be10849372a4410b3dd97a30d1e46040845c568aa2f09a8b5a08419c2c02795b
SSDEEP

49152:mvDI22SsaNYfdPBldt698dBcjHM/RJ6bbR3LoGdOTHHB72eh2NT4:mv822SsaNYfdPBldt6+dBcjHM/RJ6t4

Score

10^/10

quasar svchostman spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

SvchostMan

C2

121.89.184.234:4782

106.241.55.218:4782

Mutex

3094dfa3-6b09-4170-abb5-cd6f0b055018

Attributes

encryption_key
A5C933A97D91C5A7CDBF6D4FF8D161BFBC686474
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Svc Name
subdirectory
drivers

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/2784-1-0x0000000000EC0000-0x00000000011E4000-memory.dmp	family_quasar
behavioral1/files/0x000a00000001225c-6.dat	family_quasar
behavioral1/memory/2812-8-0x0000000001100000-0x0000000001424000-memory.dmp	family_quasar

Drops file in Drivers directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\svchost.exe	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
File opened for modification	C:\Windows\system32\drivers\svchost.exe	svchost.exe
File created	C:\Windows\system32\drivers\svchost.exe	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
File opened for modification	C:\Windows\system32\drivers	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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
2364	schtasks.exe
2900	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
Token: SeDebugPrivilege	2812	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2812	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2812	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2812	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2784 wrote to memory of 2364	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	30
PID 2784 wrote to memory of 2364	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	30
PID 2784 wrote to memory of 2364	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	30
PID 2784 wrote to memory of 2812	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	32
PID 2784 wrote to memory of 2812	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	32
PID 2784 wrote to memory of 2812	2784	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	32
PID 2812 wrote to memory of 2900	2812	svchost.exe	33
PID 2812 wrote to memory of 2900	2812	svchost.exe	33
PID 2812 wrote to memory of 2900	2812	svchost.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\2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
"C:\Users\Admin\AppData\Local\Temp\2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe"
1⤵
- Drops file in Drivers directory
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "Svc Name" /sc ONLOGON /tr "C:\Windows\system32\drivers\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2364
- C:\Windows\system32\drivers\svchost.exe
  "C:\Windows\system32\drivers\svchost.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "Svc Name" /sc ONLOGON /tr "C:\Windows\system32\drivers\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2900

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\drivers\svchost.exe

Filesize
3.1MB

MD5
fbea67e43074abf3a3524c5110e933d4

SHA1
2fb7d4fd691be43f1420bc62556744264d43d391

SHA256
2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f

SHA512
e0e5ca07f0c78c000a9979d533febc9e64f9f4373d1499acad5a39349285fa56be10849372a4410b3dd97a30d1e46040845c568aa2f09a8b5a08419c2c02795b

Download Submit
memory/2784-0-0x000007FEF57F3000-0x000007FEF57F4000-memory.dmp

Filesize
4KB

Download
memory/2784-1-0x0000000000EC0000-0x00000000011E4000-memory.dmp

Filesize
3.1MB

Download
memory/2784-2-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2784-9-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2812-8-0x0000000001100000-0x0000000001424000-memory.dmp

Filesize
3.1MB

Download
memory/2812-10-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2812-11-0x000007FEF57F0000-0x000007FEF61DC000-memory.dmp

Filesize
9.9MB

Download
memory/2812-12-0x000007FEF57F0000-0x000007FEF61DC000-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