quasar | 608df6a8df334a640a62a58fadf4a930c6aeb849f22e0aa913c9f7a5e1940c6f

General

Target

FlashingSoftwarePRO.exe
Size

3.4MB
MD5

a15342ce7b35b9509dcd51d5f0506f4e
SHA1

f8c85bcd18d7bc43f7668f4e6b32f8f97729f1e9
SHA256

608df6a8df334a640a62a58fadf4a930c6aeb849f22e0aa913c9f7a5e1940c6f
SHA512

0857813ac1954be3cbbf57b435d5e968a0757ebd29ab205d1491e0f0f5738ce445fbda4fff44f66196d97a7e66cb4edc099acec69263dee8b8843f018f35c6e9
SSDEEP

49152:jvqG42pda6D+/PjlLOlg6yQipVhW/HNRsAvJs3oGd/THHB72eh2NT:jvN42pda6D+/PjlLOlZyQipVosx

Score

10^/10

quasar svchost discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

192.168.0.147:4782

101.56.195.62:4782

Matt10n3-57692.portmap.host:57692

Mutex

08e310ae-ecb8-4d83-b87f-95abe874bb4c

Attributes

encryption_key
7AC4D01862AC71A180B8FAEE5694E9D7B88EF662
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 2 IoCs

resource	yara_rule
behavioral1/memory/232-1-0x0000000000460000-0x00000000007C4000-memory.dmp	family_quasar
behavioral1/files/0x001d00000002ab5c-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
5312	svchost.exe

Drops file in System32 directory 2 IoCs

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

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

System Information Discovery
T1082

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
4276	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4276	PING.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
5280	schtasks.exe
3500	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	232	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	5312	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5312	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 232 wrote to memory of 5280	232	FlashingSoftwarePRO.exe	77
PID 232 wrote to memory of 5280	232	FlashingSoftwarePRO.exe	77
PID 232 wrote to memory of 5312	232	FlashingSoftwarePRO.exe	79
PID 232 wrote to memory of 5312	232	FlashingSoftwarePRO.exe	79
PID 5312 wrote to memory of 3500	5312	svchost.exe	80
PID 5312 wrote to memory of 3500	5312	svchost.exe	80
PID 5312 wrote to memory of 5024	5312	svchost.exe	84
PID 5312 wrote to memory of 5024	5312	svchost.exe	84
PID 5312 wrote to memory of 892	5312	svchost.exe	86
PID 5312 wrote to memory of 892	5312	svchost.exe	86
PID 892 wrote to memory of 1396	892	cmd.exe	88
PID 892 wrote to memory of 1396	892	cmd.exe	88
PID 892 wrote to memory of 4276	892	cmd.exe	89
PID 892 wrote to memory of 4276	892	cmd.exe	89

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:232
- 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:5280
- C:\Windows\system32\System32\svchost.exe
  "C:\Windows\system32\System32\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5312
- - 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:3500
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /delete /tn "RuntimeBroker" /f
    3⤵
    PID:5024
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\Li3o2xfc1DjV.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:892
  - - C:\Windows\system32\chcp.com
      chcp 65001
      4⤵
      PID:1396
  - - C:\Windows\system32\PING.EXE
      ping -n 10 localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:4276

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 Information Discovery

1

T1082

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\Li3o2xfc1DjV.bat

Filesize
203B

MD5
c0ad82c5e8e6b753d60b96882465a46b

SHA1
8e71214896ff284c5eb997ec44b419448204d286

SHA256
f8c9082e119771ad57d0bd029e1b6c4b8898a74a375f0284f5c3e6cc847857f9

SHA512
cde26dcb65e74a309b398f9b1ff466b2573ba95c3096b5ea5a0f07ddcdf9a6a5703a08566435f67cd8a5c0311fe8bbc5912daf3c220f3f0aa7fcd9a7fe3ba203

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

Filesize
3.4MB

MD5
a15342ce7b35b9509dcd51d5f0506f4e

SHA1
f8c85bcd18d7bc43f7668f4e6b32f8f97729f1e9

SHA256
608df6a8df334a640a62a58fadf4a930c6aeb849f22e0aa913c9f7a5e1940c6f

SHA512
0857813ac1954be3cbbf57b435d5e968a0757ebd29ab205d1491e0f0f5738ce445fbda4fff44f66196d97a7e66cb4edc099acec69263dee8b8843f018f35c6e9

Download Submit
memory/232-0-0x00007FFB24D73000-0x00007FFB24D75000-memory.dmp

Filesize
8KB

Download
memory/232-1-0x0000000000460000-0x00000000007C4000-memory.dmp

Filesize
3.4MB

Download
memory/232-2-0x00007FFB24D70000-0x00007FFB25832000-memory.dmp

Filesize
10.8MB

Download
memory/232-8-0x00007FFB24D70000-0x00007FFB25832000-memory.dmp

Filesize
10.8MB

Download
memory/5312-10-0x000000001D500000-0x000000001D550000-memory.dmp

Filesize
320KB

Download
memory/5312-11-0x000000001D610000-0x000000001D6C2000-memory.dmp

Filesize
712KB

Download
memory/5312-12-0x00007FFB24D70000-0x00007FFB25832000-memory.dmp

Filesize
10.8MB

Download
memory/5312-15-0x000000001D550000-0x000000001D562000-memory.dmp

Filesize
72KB

Download
memory/5312-16-0x000000001D5B0000-0x000000001D5EC000-memory.dmp

Filesize
240KB

Download
memory/5312-9-0x00007FFB24D70000-0x00007FFB25832000-memory.dmp

Filesize
10.8MB

Download
memory/5312-22-0x00007FFB24D70000-0x00007FFB25832000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads