quasar | 9261f3eefa0aef107e865784d8b8b62d4e7213056dfe535893920a344fa0d908

Analysis

max time kernel
146s
max time network
150s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
01-12-2024 22:57

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General

Target

Panel Ejecutador MTA 3.14.zip
Size

1.1MB
MD5

d345c2eb24b0d3806865fda604ad1cc8
SHA1

6b813317f6108f2c242babda58097070503df242
SHA256

9261f3eefa0aef107e865784d8b8b62d4e7213056dfe535893920a344fa0d908
SHA512

76c941b833ffcef6da121c2e2735952ed81cbf7c6a6260a227040d37abf0adaa41461045c69710331345d52d95aac89ddf0a256ebc85fbdb2ed703106999ab74
SSDEEP

24576:ioRau4l48JTUIlfSsqFDxCs3+UgQYuX370FBZa:ioRUv5UIYsqOs3+UPY234m

Score

10^/10

quasar office04 spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

azxq0ap.localto.net:3425

Mutex

e51e2b65-e963-4051-9736-67d57ed46798

Attributes

encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
install_name
WindowsUpdate.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WindowsUpdate
subdirectory
SubDir

Signatures

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

Quasar payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x00280000000450dd-2.dat	family_quasar
behavioral1/memory/1048-5-0x0000000000BD0000-0x0000000000F26000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

Panel Ejecutador MTA 3.14.exeWindowsUpdate.exe

pid	Process
1048	Panel Ejecutador MTA 3.14.exe
3860	WindowsUpdate.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

Processes:

schtasks.exeschtasks.exe

pid	Process
3608	schtasks.exe
4768	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

7zFM.exePanel Ejecutador MTA 3.14.exeWindowsUpdate.exe

description	pid	Process
Token: SeRestorePrivilege	4748	7zFM.exe
Token: 35	4748	7zFM.exe
Token: SeSecurityPrivilege	4748	7zFM.exe
Token: SeDebugPrivilege	1048	Panel Ejecutador MTA 3.14.exe
Token: SeDebugPrivilege	3860	WindowsUpdate.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

7zFM.exe

pid	Process
4748	7zFM.exe
4748	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

WindowsUpdate.exe

pid	Process
3860	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Panel Ejecutador MTA 3.14.exeWindowsUpdate.exe

description	pid	Process	procid_target
PID 1048 wrote to memory of 3608	1048	Panel Ejecutador MTA 3.14.exe	92
PID 1048 wrote to memory of 3608	1048	Panel Ejecutador MTA 3.14.exe	92
PID 1048 wrote to memory of 3860	1048	Panel Ejecutador MTA 3.14.exe	94
PID 1048 wrote to memory of 3860	1048	Panel Ejecutador MTA 3.14.exe	94
PID 3860 wrote to memory of 4768	3860	WindowsUpdate.exe	95
PID 3860 wrote to memory of 4768	3860	WindowsUpdate.exe	95

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:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Panel Ejecutador MTA 3.14.zip"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4748

C:\Users\Admin\Desktop\Panel Ejecutador MTA 3.14.exe
"C:\Users\Admin\Desktop\Panel Ejecutador MTA 3.14.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3608
- C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe
  "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3860
- - C:\Windows\SYSTEM32\schtasks.exe
    "schtasks" /create /tn "WindowsUpdate" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4768

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\Desktop\Panel Ejecutador MTA 3.14.exe

Filesize
3.3MB

MD5
5791d405ca0a97a89eeaeb4f2be628be

SHA1
a012d40aaaa01db12a83b0e4408d012fd383dd0b

SHA256
6c67a1bf1d558b31a790e4bdcef062c9b49f00a1b3d7361dfc8308d55b87bc5d

SHA512
3971447d6a5f1ffe51bb1acc0d2525aa5bca521358c67828e6bd983d68e8c22dfa83ab49109575bc113e13de861682af563a3ed21e5ef48cce1bfcdb8f1f2afd

Download Submit
memory/1048-4-0x00007FFAF2563000-0x00007FFAF2565000-memory.dmp

Filesize
8KB

Download
memory/1048-5-0x0000000000BD0000-0x0000000000F26000-memory.dmp

Filesize
3.3MB

Download
memory/1048-6-0x00007FFAF2560000-0x00007FFAF3022000-memory.dmp

Filesize
10.8MB

Download
memory/1048-9-0x00007FFAF2560000-0x00007FFAF3022000-memory.dmp

Filesize
10.8MB

Download
memory/3860-10-0x000000001C860000-0x000000001C8B0000-memory.dmp

Filesize
320KB

Download
memory/3860-11-0x000000001C970000-0x000000001CA22000-memory.dmp

Filesize
712KB

Download
memory/3860-14-0x000000001C8E0000-0x000000001C8F2000-memory.dmp

Filesize
72KB

Download
memory/3860-15-0x000000001D570000-0x000000001D5AC000-memory.dmp

Filesize
240KB

Download