quasar | 501786d49303e7084656630f4bb87720b54ece67a076301085ed691105015b95

General

Target

spoofer.exe
Size

3.1MB
MD5

062594a09e54ec44201297cfc273347d
SHA1

c5bc740dd3c184c11d6bf4d79a2171f5cb2cd27b
SHA256

501786d49303e7084656630f4bb87720b54ece67a076301085ed691105015b95
SHA512

a9ed40475b5ebf2e88534cc41793e10cf344c46e19e2e4c6a6ab344b9806144c93910d6fd604470d1aff9e667fd95b14bd54b0b3d3882c9a3d51a680c7f653c9
SSDEEP

49152:7vGvE2H5aweBHPbl6T/yGaqA6/WAe2EGHgk/uVKoGdlTHHB72eh2NT:7v0E2H5aweBHPbl6T/DaqA6/WAeTc

Score

10^/10

quasar sw_spoofer spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Sw_Spoofer

C2

192.168.68.137:443

192.168.68.132:443

92.221.125.55:443

192.168.68.128:443

superwhomp.hopto.org:443

Mutex

501920dc-6c9c-426e-ba5a-a2a5412277dd

Attributes

encryption_key
5CB2755608EFDB1313EF4F2ACEA101833F5AEE2B
install_name
Runtime Broker.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System
subdirectory
SubDir

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/2688-1-0x0000000000930000-0x0000000000C54000-memory.dmp	family_quasar
behavioral1/files/0x000f000000017390-6.dat	family_quasar
behavioral1/memory/2300-9-0x0000000000A00000-0x0000000000D24000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2300	Runtime Broker.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\SubDir\Runtime Broker.exe	spoofer.exe
File opened for modification	C:\Windows\system32\SubDir\Runtime Broker.exe	spoofer.exe
File opened for modification	C:\Windows\system32\SubDir	spoofer.exe
File opened for modification	C:\Windows\system32\SubDir\Runtime Broker.exe	Runtime Broker.exe
File opened for modification	C:\Windows\system32\SubDir	Runtime Broker.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
2840	schtasks.exe
2860	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2688	spoofer.exe
Token: SeDebugPrivilege	2300	Runtime Broker.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2300	Runtime Broker.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
2300	Runtime Broker.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2300	Runtime Broker.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2688 wrote to memory of 2860	2688	spoofer.exe	31
PID 2688 wrote to memory of 2860	2688	spoofer.exe	31
PID 2688 wrote to memory of 2860	2688	spoofer.exe	31
PID 2688 wrote to memory of 2300	2688	spoofer.exe	33
PID 2688 wrote to memory of 2300	2688	spoofer.exe	33
PID 2688 wrote to memory of 2300	2688	spoofer.exe	33
PID 2300 wrote to memory of 2840	2300	Runtime Broker.exe	34
PID 2300 wrote to memory of 2840	2300	Runtime Broker.exe	34
PID 2300 wrote to memory of 2840	2300	Runtime 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\spoofer.exe
"C:\Users\Admin\AppData\Local\Temp\spoofer.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Runtime Broker.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2860
- C:\Windows\system32\SubDir\Runtime Broker.exe
  "C:\Windows\system32\SubDir\Runtime Broker.exe"
  2⤵
  - 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:2300
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Runtime Broker.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2840

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\SubDir\Runtime Broker.exe

Filesize
3.1MB

MD5
062594a09e54ec44201297cfc273347d

SHA1
c5bc740dd3c184c11d6bf4d79a2171f5cb2cd27b

SHA256
501786d49303e7084656630f4bb87720b54ece67a076301085ed691105015b95

SHA512
a9ed40475b5ebf2e88534cc41793e10cf344c46e19e2e4c6a6ab344b9806144c93910d6fd604470d1aff9e667fd95b14bd54b0b3d3882c9a3d51a680c7f653c9

Download Submit
memory/2300-10-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2300-9-0x0000000000A00000-0x0000000000D24000-memory.dmp

Filesize
3.1MB

Download
memory/2300-11-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2300-12-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-0-0x000007FEF52E3000-0x000007FEF52E4000-memory.dmp

Filesize
4KB

Download
memory/2688-1-0x0000000000930000-0x0000000000C54000-memory.dmp

Filesize
3.1MB

Download
memory/2688-2-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Filesize
9.9MB

Download
memory/2688-8-0x000007FEF52E0000-0x000007FEF5CCC000-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