quasar | ac67ed61a6bb0d7db50756f4dbacdb56ed90755f1d9e693d9e3650445b271474

Analysis

max time kernel
110s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-12-2024 17:47

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General

Target

Client-built.exe
Size

3.1MB
MD5

1e95dbf3d51282ba1c6c455072db3853
SHA1

62460f6c11bdf66f5180fd06cf50bb6cc1b342f4
SHA256

ac67ed61a6bb0d7db50756f4dbacdb56ed90755f1d9e693d9e3650445b271474
SHA512

965720b3bfaa906748d9fc75d6688fd438245a404724b07aa69282030167559007e0133bf2e5ede8476e15ea8c3d556ecf10d8658ee7d6ccc8d1d73f128232b1
SSDEEP

49152:DvulL26AaNeWgPhlmVqvMQ7XSKCO/RJ6mbR3LoGdQTHHB72eh2NT:DveL26AaNeWgPhlmVqkQ7XSKCO/RJ6g

Score

10^/10

quasar trey spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

trey

problems-estimation.gl.at.ply.gg:23158

Mutex

108c9f83-3a30-4ea4-82a6-924c2fb96505

Attributes

encryption_key
3C4A7FEC35CCD9EF97E67742362289CDF4B0B0AE
install_name
trey.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
trey

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/4524-1-0x0000000000960000-0x0000000000C84000-memory.dmp	family_quasar
behavioral1/files/0x0007000000023cae-8.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1048	trey.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
3044	schtasks.exe
3060	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	Client-built.exe
Token: SeDebugPrivilege	1048	trey.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1048	trey.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1048	trey.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1048	trey.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 3060	4524	Client-built.exe	83
PID 4524 wrote to memory of 3060	4524	Client-built.exe	83
PID 4524 wrote to memory of 1048	4524	Client-built.exe	85
PID 4524 wrote to memory of 1048	4524	Client-built.exe	85
PID 1048 wrote to memory of 3044	1048	trey.exe	86
PID 1048 wrote to memory of 3044	1048	trey.exe	86

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:4524
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3060
- C:\Users\Admin\AppData\Roaming\trey\trey.exe
  "C:\Users\Admin\AppData\Roaming\trey\trey.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:1048
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\trey\trey.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:3044

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\trey\trey.exe

Filesize
3.1MB

MD5
1e95dbf3d51282ba1c6c455072db3853

SHA1
62460f6c11bdf66f5180fd06cf50bb6cc1b342f4

SHA256
ac67ed61a6bb0d7db50756f4dbacdb56ed90755f1d9e693d9e3650445b271474

SHA512
965720b3bfaa906748d9fc75d6688fd438245a404724b07aa69282030167559007e0133bf2e5ede8476e15ea8c3d556ecf10d8658ee7d6ccc8d1d73f128232b1

Download Submit
memory/1048-10-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1048-11-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download
memory/1048-12-0x000000001BE70000-0x000000001BEC0000-memory.dmp

Filesize
320KB

Download
memory/1048-13-0x000000001BF80000-0x000000001C032000-memory.dmp

Filesize
712KB

Download
memory/1048-14-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download
memory/4524-0-0x00007FF81EA33000-0x00007FF81EA35000-memory.dmp

Filesize
8KB

Download
memory/4524-1-0x0000000000960000-0x0000000000C84000-memory.dmp

Filesize
3.1MB

Download
memory/4524-2-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download
memory/4524-9-0x00007FF81EA30000-0x00007FF81F4F1000-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