quasar | 2f520d7a0fa1e9bc4ac89ba09ae327246eb7967cb6dc3fe529cbe39a247fc9e2

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

63f4446dcf7172741331aebf789e65e8
SHA1

f2801d183d9348e511cdc538430c10b5a473101b
SHA256

2f520d7a0fa1e9bc4ac89ba09ae327246eb7967cb6dc3fe529cbe39a247fc9e2
SHA512

834151cb08c23d63a8ab9260ea462c1f729a43e77f00889c2938856a537bd5069602a4ca234df9e6860bb04e77ee041c06679eceba4911590f5fb74cbb48f145
SSDEEP

49152:SvTI22SsaNYfdPBldt698dBcjHQSG1mzILoGdfkTHHB72eh2NT:Svs22SsaNYfdPBldt6+dBcjHQSGTP

Score

10^/10

quasar svchost discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

quasqy10-51732.portmap.host:4782

Mutex

ab8cd83d-dff8-496a-bfc6-7a96594a1bfb

Attributes

encryption_key
BDB44181C868606DFCA1741A69056AAA62DADEFC
install_name
svchost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RuntimeBroker
subdirectory
System32

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/1076-1-0x0000000000D20000-0x0000000001044000-memory.dmp	family_quasar
behavioral1/files/0x0007000000018b62-5.dat	family_quasar
behavioral1/memory/2596-7-0x0000000000EE0000-0x0000000001204000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

pid	Process
2596	svchost.exe
2488	svchost.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	svchost.exe
File opened for modification	C:\Windows\system32\System32	svchost.exe
File created	C:\Windows\system32\System32\svchost.exe	FlashingSoftwarePRO.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2568	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2568	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3008	schtasks.exe
2572	schtasks.exe
1792	schtasks.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1076	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2596	svchost.exe
Token: SeDebugPrivilege	2488	svchost.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2596	svchost.exe
2488	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1076 wrote to memory of 3008	1076	FlashingSoftwarePRO.exe	30
PID 1076 wrote to memory of 3008	1076	FlashingSoftwarePRO.exe	30
PID 1076 wrote to memory of 3008	1076	FlashingSoftwarePRO.exe	30
PID 1076 wrote to memory of 2596	1076	FlashingSoftwarePRO.exe	32
PID 1076 wrote to memory of 2596	1076	FlashingSoftwarePRO.exe	32
PID 1076 wrote to memory of 2596	1076	FlashingSoftwarePRO.exe	32
PID 2596 wrote to memory of 2572	2596	svchost.exe	33
PID 2596 wrote to memory of 2572	2596	svchost.exe	33
PID 2596 wrote to memory of 2572	2596	svchost.exe	33
PID 2596 wrote to memory of 2444	2596	svchost.exe	35
PID 2596 wrote to memory of 2444	2596	svchost.exe	35
PID 2596 wrote to memory of 2444	2596	svchost.exe	35
PID 2444 wrote to memory of 2524	2444	cmd.exe	37
PID 2444 wrote to memory of 2524	2444	cmd.exe	37
PID 2444 wrote to memory of 2524	2444	cmd.exe	37
PID 2444 wrote to memory of 2568	2444	cmd.exe	38
PID 2444 wrote to memory of 2568	2444	cmd.exe	38
PID 2444 wrote to memory of 2568	2444	cmd.exe	38
PID 2444 wrote to memory of 2488	2444	cmd.exe	39
PID 2444 wrote to memory of 2488	2444	cmd.exe	39
PID 2444 wrote to memory of 2488	2444	cmd.exe	39
PID 2488 wrote to memory of 1792	2488	svchost.exe	40
PID 2488 wrote to memory of 1792	2488	svchost.exe	40
PID 2488 wrote to memory of 1792	2488	svchost.exe	40

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\FlashingSoftwarePRO.exe
"C:\Users\Admin\AppData\Local\Temp\FlashingSoftwarePRO.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1076
- C:\Windows\system32\schtasks.exe
  "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3008
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2596
- - C:\Windows\system32\schtasks.exe
    "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2572
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\EWblwG6vKWxL.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2444
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:2524
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2568
  - - C:\Windows\system32\System32\svchost.exe
      "C:\Windows\system32\System32\svchost.exe"
      4⤵
      Executes dropped EXE
      Drops file in System32 directory
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2488
    - - C:\Windows\system32\schtasks.exe
        
        "schtasks" /create /tn "RuntimeBroker" /sc ONLOGON /tr "C:\Windows\system32\System32\svchost.exe" /rl HIGHEST /f
        5⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1792

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

Remote System Discovery

1

T1018

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\EWblwG6vKWxL.bat

Filesize
199B

MD5
b013ce397db2c0377ffe586d672333a2

SHA1
edbadb5d981b7de61312bed956a41c528d7dedd1

SHA256
a0e230dae7ea0a1eacd3a953ddd2fcaecc12cfa88e8a7b65fd85c5091e7eabac

SHA512
f8a56d3273f95ff4a673cf5334841164553117462d2d6886e0f25bb9a77d05199e55cc7f0d19283c356b61df0ffbf1d88a138b23da4bc3a307c1b009a0d9a659

Download Submit
C:\Windows\System32\System32\svchost.exe

Filesize
3.1MB

MD5
63f4446dcf7172741331aebf789e65e8

SHA1
f2801d183d9348e511cdc538430c10b5a473101b

SHA256
2f520d7a0fa1e9bc4ac89ba09ae327246eb7967cb6dc3fe529cbe39a247fc9e2

SHA512
834151cb08c23d63a8ab9260ea462c1f729a43e77f00889c2938856a537bd5069602a4ca234df9e6860bb04e77ee041c06679eceba4911590f5fb74cbb48f145

Download Submit
memory/1076-0-0x000007FEF64B3000-0x000007FEF64B4000-memory.dmp

Filesize
4KB

Download
memory/1076-1-0x0000000000D20000-0x0000000001044000-memory.dmp

Filesize
3.1MB

Download
memory/1076-2-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/1076-8-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-10-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-9-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-7-0x0000000000EE0000-0x0000000001204000-memory.dmp

Filesize
3.1MB

Download
memory/2596-11-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download
memory/2596-20-0x000007FEF64B0000-0x000007FEF6E9C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads