quasar | 4f872140210a9253c0deb66a65f0c265a194e85d99a639f406d927a1ac760903

General

Target

FlashingSoftwarePRO.exe
Size

3.1MB
MD5

b2f5d1078f1ed4eb8547f19b48dc5126
SHA1

657254864bfab24f564888e230da7f46266ecb4c
SHA256

4f872140210a9253c0deb66a65f0c265a194e85d99a639f406d927a1ac760903
SHA512

9f850a289fd4ac3b7f1e94e8ec179b99e6ae9c78cd7ef164aefd87c4d14d9f7995c60596cc1720a17afe0fc40d32715886a9fd8695c11ac6941077e45528c882
SSDEEP

49152:vvxI22SsaNYfdPBldt698dBcjH1uRJ6ebR3LoGduTHHB72eh2NT:vvi22SsaNYfdPBldt6+dBcjH1uRJ6Y

Score

10^/10

quasar svchost spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

svchost

C2

7.tcp.eu.ngrok.io:10771

7.tcp.eu.ngrok.io:4782

Mutex

75e27cf2-023d-4d6d-9a0d-265f3da40a2e

Attributes

encryption_key
BDB44181C868606DFCA1741A69056AAA62DADEFC
install_name
svchost.exe
log_directory
Logs
reconnect_delay
300
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/1924-1-0x00000000010A0000-0x00000000013C4000-memory.dmp	family_quasar
behavioral1/files/0x000800000001878c-5.dat	family_quasar
behavioral1/memory/2040-7-0x0000000000F70000-0x0000000001294000-memory.dmp	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
2040	svchost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
18	7.tcp.eu.ngrok.io
2	7.tcp.eu.ngrok.io
9	7.tcp.eu.ngrok.io

Drops file in System32 directory 4 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
File opened for modification	C:\Windows\system32\System32	FlashingSoftwarePRO.exe
File opened for modification	C:\Windows\system32\System32	svchost.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
2052	schtasks.exe
3032	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1924	FlashingSoftwarePRO.exe
Token: SeDebugPrivilege	2040	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2040	svchost.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2052	1924	FlashingSoftwarePRO.exe	30
PID 1924 wrote to memory of 2052	1924	FlashingSoftwarePRO.exe	30
PID 1924 wrote to memory of 2052	1924	FlashingSoftwarePRO.exe	30
PID 1924 wrote to memory of 2040	1924	FlashingSoftwarePRO.exe	32
PID 1924 wrote to memory of 2040	1924	FlashingSoftwarePRO.exe	32
PID 1924 wrote to memory of 2040	1924	FlashingSoftwarePRO.exe	32
PID 2040 wrote to memory of 3032	2040	svchost.exe	33
PID 2040 wrote to memory of 3032	2040	svchost.exe	33
PID 2040 wrote to memory of 3032	2040	svchost.exe	33

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:1924
- 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:2052
- 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:2040
- - 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:3032

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
3.1MB

MD5
b2f5d1078f1ed4eb8547f19b48dc5126

SHA1
657254864bfab24f564888e230da7f46266ecb4c

SHA256
4f872140210a9253c0deb66a65f0c265a194e85d99a639f406d927a1ac760903

SHA512
9f850a289fd4ac3b7f1e94e8ec179b99e6ae9c78cd7ef164aefd87c4d14d9f7995c60596cc1720a17afe0fc40d32715886a9fd8695c11ac6941077e45528c882

Download Submit
memory/1924-0-0x000007FEF5523000-0x000007FEF5524000-memory.dmp

Filesize
4KB

Download
memory/1924-1-0x00000000010A0000-0x00000000013C4000-memory.dmp

Filesize
3.1MB

Download
memory/1924-2-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/1924-10-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2040-8-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2040-9-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2040-7-0x0000000000F70000-0x0000000001294000-memory.dmp

Filesize
3.1MB

Download
memory/2040-11-0x000007FEF5520000-0x000007FEF5F0C000-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