quasar | 6f7eb9b82b545931d07d4763a819578e3161f3df295dfcbf6c831be04ee2e61d

General

Target

friendsforever.exe
Size

3.1MB
MD5

ea836fb4533514a9a0e7e1b79378844d
SHA1

efda5af5b9ee2d3c6f799e23435a1a4b741232e3
SHA256

6f7eb9b82b545931d07d4763a819578e3161f3df295dfcbf6c831be04ee2e61d
SHA512

c116e25c1c4550b4ba66137b442d2b7f372a0ac0f27f016e4e86e81b7c0d3f43c964fac5e8fe611690ea44d3caf27911a135ee3f4e44d8b872ec48576f68623a
SSDEEP

98304:nvSL26AaNeWgPhlmVqkQ7XSKctFxwnys:vC4SR3x0y

Score

10^/10

quasar click lover spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Click Lover

C2

193.161.193.99:44422

Mutex

98bd51bf-11bf-416b-a912-36f489dfdd26

Attributes

encryption_key
2E11DF8B2B2BF1F6C123C50C37AB3BD9FF752BD5
install_name
Video Application.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Video Application
subdirectory
SubDir

Signatures

Quasar RAT
Quasar is an open source Remote Access Tool.
trojan spyware quasar
Quasar family
quasar

Quasar payload 2 IoCs

resource	yara_rule
behavioral2/memory/4948-1-0x0000000000060000-0x0000000000384000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023ccb-6.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3712	Video Application.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\system32\SubDir\Video Application.exe	friendsforever.exe
File opened for modification	C:\Windows\system32\SubDir\Video Application.exe	friendsforever.exe
File opened for modification	C:\Windows\system32\SubDir	friendsforever.exe
File opened for modification	C:\Windows\system32\SubDir\Video Application.exe	Video Application.exe
File opened for modification	C:\Windows\system32\SubDir	Video Application.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
3016	schtasks.exe
3692	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	friendsforever.exe
Token: SeDebugPrivilege	3712	Video Application.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3712	Video Application.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 3016	4948	friendsforever.exe	82
PID 4948 wrote to memory of 3016	4948	friendsforever.exe	82
PID 4948 wrote to memory of 3712	4948	friendsforever.exe	84
PID 4948 wrote to memory of 3712	4948	friendsforever.exe	84
PID 3712 wrote to memory of 3692	3712	Video Application.exe	85
PID 3712 wrote to memory of 3692	3712	Video Application.exe	85

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\friendsforever.exe
"C:\Users\Admin\AppData\Local\Temp\friendsforever.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Video Application" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Video Application.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3016
- C:\Windows\system32\SubDir\Video Application.exe
  "C:\Windows\system32\SubDir\Video Application.exe"
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3712
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Video Application" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Video Application.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3692

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Windows\System32\SubDir\Video Application.exe

Filesize
3.1MB

MD5
ea836fb4533514a9a0e7e1b79378844d

SHA1
efda5af5b9ee2d3c6f799e23435a1a4b741232e3

SHA256
6f7eb9b82b545931d07d4763a819578e3161f3df295dfcbf6c831be04ee2e61d

SHA512
c116e25c1c4550b4ba66137b442d2b7f372a0ac0f27f016e4e86e81b7c0d3f43c964fac5e8fe611690ea44d3caf27911a135ee3f4e44d8b872ec48576f68623a

Download Submit
memory/3712-10-0x00007FFD67D60000-0x00007FFD68821000-memory.dmp

Filesize
10.8MB

Download
memory/3712-11-0x00007FFD67D60000-0x00007FFD68821000-memory.dmp

Filesize
10.8MB

Download
memory/3712-12-0x000000001C750000-0x000000001C7A0000-memory.dmp

Filesize
320KB

Download
memory/3712-13-0x000000001C860000-0x000000001C912000-memory.dmp

Filesize
712KB

Download
memory/3712-16-0x000000001C7F0000-0x000000001C802000-memory.dmp

Filesize
72KB

Download
memory/3712-17-0x000000001D060000-0x000000001D09C000-memory.dmp

Filesize
240KB

Download
memory/3712-18-0x00007FFD67D60000-0x00007FFD68821000-memory.dmp

Filesize
10.8MB

Download
memory/4948-0-0x00007FFD67D63000-0x00007FFD67D65000-memory.dmp

Filesize
8KB

Download
memory/4948-1-0x0000000000060000-0x0000000000384000-memory.dmp

Filesize
3.1MB

Download
memory/4948-2-0x00007FFD67D60000-0x00007FFD68821000-memory.dmp

Filesize
10.8MB

Download
memory/4948-9-0x00007FFD67D60000-0x00007FFD68821000-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