quasar | 09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/11/2024, 19:32

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General

Target

09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
Size

3.3MB
MD5

8350e37c293e2ae2e47d6ebd5500d59f
SHA1

391aab53fedd3c3425353d0042e8e3dcc3da3867
SHA256

09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10
SHA512

b71b2ba575fa296d50112c8ccfc9bf2daf294d8d62547ca7813ebbfb04d96f144aa3ad9221aa29fe5807bbb24005ebcc16a58ad9a489ba59d15bf4a09f70046a
SSDEEP

49152:4vCI22SsaNYfdPBldt698dBcjHeEXpE+LVk/tMeoGdVTHHB72eh2NTiwD:4vP22SsaNYfdPBldt6+dBcjHeEXa5NG

Score

10^/10

quasar deoxyz spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

deoxyz

deoxyz1234-43577.portmap.host:43577

Mutex

ab79c5b4-561c-4221-9d19-8127b03be663

Attributes

encryption_key
71BF3C0F14270AD8DDE655D1E8D71855D54DDD5B
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
System
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/4412-1-0x00000000008F0000-0x0000000000C42000-memory.dmp	family_quasar
behavioral2/files/0x0007000000023c7f-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
3768	Client.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
2852	schtasks.exe
1840	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4412	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
Token: SeDebugPrivilege	3768	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3768	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3768	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3768	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4412 wrote to memory of 2852	4412	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	84
PID 4412 wrote to memory of 2852	4412	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	84
PID 4412 wrote to memory of 3768	4412	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	86
PID 4412 wrote to memory of 3768	4412	09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe	86
PID 3768 wrote to memory of 1840	3768	Client.exe	87
PID 3768 wrote to memory of 1840	3768	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\09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe
"C:\Users\Admin\AppData\Local\Temp\09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4412
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2852
- 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:3768
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "System" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1840

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
3.3MB

MD5
8350e37c293e2ae2e47d6ebd5500d59f

SHA1
391aab53fedd3c3425353d0042e8e3dcc3da3867

SHA256
09c37ede9070103d74b3bed089dc201fc48e416af17becc806ec0f4e5ef7ef10

SHA512
b71b2ba575fa296d50112c8ccfc9bf2daf294d8d62547ca7813ebbfb04d96f144aa3ad9221aa29fe5807bbb24005ebcc16a58ad9a489ba59d15bf4a09f70046a

Download Submit
memory/3768-8-0x00007FFF8B110000-0x00007FFF8BBD1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-10-0x00007FFF8B110000-0x00007FFF8BBD1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-11-0x000000001BC90000-0x000000001BCE0000-memory.dmp

Filesize
320KB

Download
memory/3768-12-0x000000001BDA0000-0x000000001BE52000-memory.dmp

Filesize
712KB

Download
memory/3768-13-0x00007FFF8B110000-0x00007FFF8BBD1000-memory.dmp

Filesize
10.8MB

Download
memory/4412-0-0x00007FFF8B113000-0x00007FFF8B115000-memory.dmp

Filesize
8KB

Download
memory/4412-1-0x00000000008F0000-0x0000000000C42000-memory.dmp

Filesize
3.3MB

Download
memory/4412-2-0x00007FFF8B110000-0x00007FFF8BBD1000-memory.dmp

Filesize
10.8MB

Download
memory/4412-9-0x00007FFF8B110000-0x00007FFF8BBD1000-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