quasar | 940f6670e42c828cc23eddd022c98e98fbfc8b81c3b865afdccbb28411cd34fe

Analysis

max time kernel
149s
max time network
151s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
24-12-2024 23:00

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General

Target

Client-built.exe
Size

3.1MB
MD5

33165662c46e7625c5a30669d601b6ee
SHA1

963721d414f7ae3652b8f8c32f1634cc6c1562e7
SHA256

940f6670e42c828cc23eddd022c98e98fbfc8b81c3b865afdccbb28411cd34fe
SHA512

c9580a3a8897bf7ef31cd44e13da917fbddf651f0336655f0befad58a15dec19af157c9ce4a35996286c00a2eb557a7ca7721b7fc3a249b5353d6593ddd8af1a
SSDEEP

98304:yvT22SsaNYfdPBldt6+dBcjH2hRJ6KVG:007jCzVG

Score

10^/10

quasar andiza spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

andiza

87.205.199.61:4782

Mutex

1b8fd8bf-0ee0-4184-9181-b62e5103076a

Attributes

encryption_key
25A1A6C05C3DAD37A55B8620098E6CF761F8184E
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
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
behavioral1/memory/3712-1-0x00000000007D0000-0x0000000000AF4000-memory.dmp	family_quasar
behavioral1/files/0x0028000000046147-3.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
116	Client.exe

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

System Information Discovery
T1082

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
1044	schtasks.exe
776	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3712	Client-built.exe
Token: SeDebugPrivilege	116	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
116	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
116	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
116	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 1044	3712	Client-built.exe	84
PID 3712 wrote to memory of 1044	3712	Client-built.exe	84
PID 3712 wrote to memory of 116	3712	Client-built.exe	86
PID 3712 wrote to memory of 116	3712	Client-built.exe	86
PID 116 wrote to memory of 776	116	Client.exe	87
PID 116 wrote to memory of 776	116	Client.exe	87

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\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1044
- C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:116
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

Filesize
3.1MB

MD5
33165662c46e7625c5a30669d601b6ee

SHA1
963721d414f7ae3652b8f8c32f1634cc6c1562e7

SHA256
940f6670e42c828cc23eddd022c98e98fbfc8b81c3b865afdccbb28411cd34fe

SHA512
c9580a3a8897bf7ef31cd44e13da917fbddf651f0336655f0befad58a15dec19af157c9ce4a35996286c00a2eb557a7ca7721b7fc3a249b5353d6593ddd8af1a

Download Submit
memory/116-6-0x00007FFEFE990000-0x00007FFEFF452000-memory.dmp

Filesize
10.8MB

Download
memory/116-7-0x00007FFEFE990000-0x00007FFEFF452000-memory.dmp

Filesize
10.8MB

Download
memory/116-8-0x000000001D290000-0x000000001D2E0000-memory.dmp

Filesize
320KB

Download
memory/116-9-0x000000001D3A0000-0x000000001D452000-memory.dmp

Filesize
712KB

Download
memory/116-10-0x00007FFEFE990000-0x00007FFEFF452000-memory.dmp

Filesize
10.8MB

Download
memory/3712-0-0x00007FFEFE993000-0x00007FFEFE995000-memory.dmp

Filesize
8KB

Download
memory/3712-1-0x00000000007D0000-0x0000000000AF4000-memory.dmp

Filesize
3.1MB

Download
memory/3712-2-0x00007FFEFE990000-0x00007FFEFF452000-memory.dmp

Filesize
10.8MB

Download
memory/3712-5-0x00007FFEFE990000-0x00007FFEFF452000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads