quasar | d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6

Analysis

max time kernel
10s
max time network
10s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
13-12-2024 05:15

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General

Target

RedTiger V6.1.exe
Size

3.1MB
MD5

80a01617755c58445468779ef1bb1bdb
SHA1

cbf1d327b6205cf1f0e313d7da93e82c0c16c937
SHA256

d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6
SHA512

7237cd5a8fe9d1fb045d879c8b6efa57e2fa2b62977b9dea29bded315d4004d3c72049764bf76bf0b3ef7906b4c7271f001d5734a7daa2237ee80b1e1f2d7a4f
SSDEEP

49152:DvbI22SsaNYfdPBldt698dBcjHdywoBxr4oGdKTHHB72eh2NT:Dvk22SsaNYfdPBldt6+dBcjHAwn

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.69:4782

Mutex

d3bc3858-ff4a-4aa8-97ec-67721ddcdeeb

Attributes

encryption_key
C8D618C9B5D2F91FFC94B6E9C868ECF80EB774F8
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
RedTiger Tool v6.1
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/4900-1-0x00000000003C0000-0x00000000006E4000-memory.dmp	family_quasar
behavioral1/files/0x001a00000002aac1-5.dat	family_quasar

Executes dropped EXE 1 IoCs

pid	Process
1320	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
2760	schtasks.exe
2696	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4900	RedTiger V6.1.exe
Token: SeDebugPrivilege	1320	Client.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1320	Client.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
1320	Client.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1320	Client.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4900 wrote to memory of 2760	4900	RedTiger V6.1.exe	77
PID 4900 wrote to memory of 2760	4900	RedTiger V6.1.exe	77
PID 4900 wrote to memory of 1320	4900	RedTiger V6.1.exe	79
PID 4900 wrote to memory of 1320	4900	RedTiger V6.1.exe	79
PID 1320 wrote to memory of 2696	1320	Client.exe	80
PID 1320 wrote to memory of 2696	1320	Client.exe	80

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\RedTiger V6.1.exe
"C:\Users\Admin\AppData\Local\Temp\RedTiger V6.1.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "RedTiger Tool v6.1" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2760
- 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:1320
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "RedTiger Tool v6.1" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2696

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
80a01617755c58445468779ef1bb1bdb

SHA1
cbf1d327b6205cf1f0e313d7da93e82c0c16c937

SHA256
d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6

SHA512
7237cd5a8fe9d1fb045d879c8b6efa57e2fa2b62977b9dea29bded315d4004d3c72049764bf76bf0b3ef7906b4c7271f001d5734a7daa2237ee80b1e1f2d7a4f

Download Submit
memory/1320-9-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

Filesize
10.8MB

Download
memory/1320-10-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

Filesize
10.8MB

Download
memory/1320-11-0x000000001C910000-0x000000001C960000-memory.dmp

Filesize
320KB

Download
memory/1320-12-0x000000001CA20000-0x000000001CAD2000-memory.dmp

Filesize
712KB

Download
memory/1320-13-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

Filesize
10.8MB

Download
memory/4900-0-0x00007FFFCDB53000-0x00007FFFCDB55000-memory.dmp

Filesize
8KB

Download
memory/4900-1-0x00000000003C0000-0x00000000006E4000-memory.dmp

Filesize
3.1MB

Download
memory/4900-2-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

Filesize
10.8MB

Download
memory/4900-8-0x00007FFFCDB50000-0x00007FFFCE612000-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