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 2 IoCs

resource	yara_rule
behavioral2/memory/2876-1-0x0000000000860000-0x0000000000B84000-memory.dmp	family_quasar
behavioral2/files/0x0009000000023ccf-6.dat	family_quasar

Drops file in Drivers directory 3 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
4192	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
3252	schtasks.exe
4372	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2876	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe
Token: SeDebugPrivilege	4192	svchost.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4192	svchost.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
4192	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4192	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 3252	2876	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	82
PID 2876 wrote to memory of 3252	2876	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	82
PID 2876 wrote to memory of 4192	2876	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	84
PID 2876 wrote to memory of 4192	2876	2408d093d19cf05e38b6701c9ac6c61f63f1d2042e3ef5d4999b0106ff18570f.exe	84
PID 4192 wrote to memory of 4372	4192	svchost.exe	85
PID 4192 wrote to memory of 4372	4192	svchost.exe	85

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:2876
- 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:3252
- 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:4192
- - 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:4372

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/2876-0-0x00007FF865413000-0x00007FF865415000-memory.dmp

Filesize
8KB

Download
memory/2876-1-0x0000000000860000-0x0000000000B84000-memory.dmp

Filesize
3.1MB

Download
memory/2876-2-0x00007FF865410000-0x00007FF865ED1000-memory.dmp

Filesize
10.8MB

Download
memory/2876-9-0x00007FF865410000-0x00007FF865ED1000-memory.dmp

Filesize
10.8MB

Download
memory/4192-10-0x00007FF865410000-0x00007FF865ED1000-memory.dmp

Filesize
10.8MB

Download
memory/4192-11-0x000000001CE00000-0x000000001CE50000-memory.dmp

Filesize
320KB

Download
memory/4192-12-0x000000001CF10000-0x000000001CFC2000-memory.dmp

Filesize
712KB

Download
memory/4192-13-0x00007FF865410000-0x00007FF865ED1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads