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 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 3 IoCs

resource	yara_rule
behavioral1/memory/2216-1-0x0000000001130000-0x0000000001494000-memory.dmp	family_quasar
behavioral1/files/0x000700000001903b-5.dat	family_quasar
behavioral1/memory/2528-7-0x00000000008E0000-0x0000000000C44000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2528	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

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
2200	schtasks.exe
1152	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2528	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2528	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 2200	2216	FlashingSoftwarePRO.exe	31
PID 2216 wrote to memory of 2200	2216	FlashingSoftwarePRO.exe	31
PID 2216 wrote to memory of 2200	2216	FlashingSoftwarePRO.exe	31
PID 2216 wrote to memory of 2528	2216	FlashingSoftwarePRO.exe	33
PID 2216 wrote to memory of 2528	2216	FlashingSoftwarePRO.exe	33
PID 2216 wrote to memory of 2528	2216	FlashingSoftwarePRO.exe	33
PID 2528 wrote to memory of 1152	2528	svchost.exe	34
PID 2528 wrote to memory of 1152	2528	svchost.exe	34
PID 2528 wrote to memory of 1152	2528	svchost.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\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:2216
- 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:2200
- 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:2528
- - 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:1152

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.4MB

MD5
a15342ce7b35b9509dcd51d5f0506f4e

SHA1
f8c85bcd18d7bc43f7668f4e6b32f8f97729f1e9

SHA256
608df6a8df334a640a62a58fadf4a930c6aeb849f22e0aa913c9f7a5e1940c6f

SHA512
0857813ac1954be3cbbf57b435d5e968a0757ebd29ab205d1491e0f0f5738ce445fbda4fff44f66196d97a7e66cb4edc099acec69263dee8b8843f018f35c6e9

Download Submit
memory/2216-0-0x000007FEF5523000-0x000007FEF5524000-memory.dmp

Filesize
4KB

Download
memory/2216-1-0x0000000001130000-0x0000000001494000-memory.dmp

Filesize
3.4MB

Download
memory/2216-2-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2216-8-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-7-0x00000000008E0000-0x0000000000C44000-memory.dmp

Filesize
3.4MB

Download
memory/2528-9-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-10-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2528-11-0x000007FEF5520000-0x000007FEF5F0C000-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