quasar | dc3ca1c97eb30f5be34ee7c76f6d3121659e314b8104d283c829f1a30f3b9796

Analysis

max time kernel
297s
max time network
300s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
31-01-2025 01:16

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General

Target

Captura de Pantalla de PAGO.exe
Size

946KB
MD5

c7a177d2b04341c5e21ca7cf9f6000db
SHA1

828a9d4041466f2e2f76b6ffcf641ac3814e7156
SHA256

745b2a241f10dabbb5acd2abeb3c3b2df7ba525e4fae03e9de11efe5adb082d3
SHA512

c07564d27f7c18264eb8145c20f3bb62da6e3e05b66836341a19ca0a2f6a889651a43357c15b618b0b578c9a0458ca6dc6aecf968404fea17f7865758c225bb5
SSDEEP

24576:XRejzEhR4yfC6j7S9beD5M/+DnY7YpVbi2y:XRej4hWYCO7S9beDW8nhpV+7

Score

10^/10

quasar stroy discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Stroy

109.248.151.166:61537

Mutex

QSR_MUTEX_uHD8seWaFzpqqYxRLX

Attributes

encryption_key
IR3AcRhjtuelpwNmTP7v
install_name
Updater.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Update
subdirectory
Windows

Signatures

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

Quasar payload 1 IoCs

resource	yara_rule
behavioral2/memory/2252-7-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 3 IoCs

pid	Process
3384	Updater.exe
2656	Updater.exe
844	Updater.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
13	ip-api.com

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1300 set thread context of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 set thread context of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 3384 set thread context of 2656	3384	Updater.exe	91
PID 3384 set thread context of 844	3384	Updater.exe	92

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Captura de Pantalla de PAGO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Captura de Pantalla de PAGO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Captura de Pantalla de PAGO.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Updater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Updater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Updater.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
2452	schtasks.exe
4836	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1300	Captura de Pantalla de PAGO.exe
Token: SeDebugPrivilege	4940	Captura de Pantalla de PAGO.exe
Token: SeDebugPrivilege	3384	Updater.exe
Token: SeDebugPrivilege	2656	Updater.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 2252	1300	Captura de Pantalla de PAGO.exe	85
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 1300 wrote to memory of 4940	1300	Captura de Pantalla de PAGO.exe	86
PID 4940 wrote to memory of 2452	4940	Captura de Pantalla de PAGO.exe	88
PID 4940 wrote to memory of 2452	4940	Captura de Pantalla de PAGO.exe	88
PID 4940 wrote to memory of 2452	4940	Captura de Pantalla de PAGO.exe	88
PID 4940 wrote to memory of 3384	4940	Captura de Pantalla de PAGO.exe	90
PID 4940 wrote to memory of 3384	4940	Captura de Pantalla de PAGO.exe	90
PID 4940 wrote to memory of 3384	4940	Captura de Pantalla de PAGO.exe	90
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 2656	3384	Updater.exe	91
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 3384 wrote to memory of 844	3384	Updater.exe	92
PID 2656 wrote to memory of 4836	2656	Updater.exe	93
PID 2656 wrote to memory of 4836	2656	Updater.exe	93
PID 2656 wrote to memory of 4836	2656	Updater.exe	93

C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe
"C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe
  "C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe
  "C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4940
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Captura de Pantalla de PAGO.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2452
- - C:\Users\Admin\AppData\Roaming\Windows\Updater.exe
    "C:\Users\Admin\AppData\Roaming\Windows\Updater.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3384
  - - C:\Users\Admin\AppData\Roaming\Windows\Updater.exe
      C:\Users\Admin\AppData\Roaming\Windows\Updater.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2656
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows\Updater.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:4836
  - - C:\Users\Admin\AppData\Roaming\Windows\Updater.exe
      C:\Users\Admin\AppData\Roaming\Windows\Updater.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:844

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Captura de Pantalla de PAGO.exe.log

Filesize
706B

MD5
d95c58e609838928f0f49837cab7dfd2

SHA1
55e7139a1e3899195b92ed8771d1ca2c7d53c916

SHA256
0407c814aef0d62aec7fd39b7c2f614746f0d8ff41f8ef957736f520f14b0339

SHA512
405310b29a833604c6627063bfdcf055a197e01f633ef21da238f1a6415a02e21315d689b4a6669db23e82152bed6f3492afb60963e6b2a0e9bb2ac09a480b5d

Download Submit
C:\Users\Admin\AppData\Roaming\Windows\Updater.exe

Filesize
946KB

MD5
c7a177d2b04341c5e21ca7cf9f6000db

SHA1
828a9d4041466f2e2f76b6ffcf641ac3814e7156

SHA256
745b2a241f10dabbb5acd2abeb3c3b2df7ba525e4fae03e9de11efe5adb082d3

SHA512
c07564d27f7c18264eb8145c20f3bb62da6e3e05b66836341a19ca0a2f6a889651a43357c15b618b0b578c9a0458ca6dc6aecf968404fea17f7865758c225bb5

Download Submit
memory/1300-5-0x0000000007A70000-0x0000000007B02000-memory.dmp

Filesize
584KB

Download
memory/1300-2-0x0000000007820000-0x0000000007930000-memory.dmp

Filesize
1.1MB

Download
memory/1300-4-0x0000000007F80000-0x0000000008524000-memory.dmp

Filesize
5.6MB

Download
memory/1300-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1300-6-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/1300-3-0x0000000007930000-0x00000000079CC000-memory.dmp

Filesize
624KB

Download
memory/1300-1-0x0000000000870000-0x0000000000962000-memory.dmp

Filesize
968KB

Download
memory/1300-11-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2252-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2252-13-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2252-15-0x0000000005240000-0x00000000052A6000-memory.dmp

Filesize
408KB

Download
memory/2252-18-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2252-10-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2656-31-0x0000000006A00000-0x0000000006A0A000-memory.dmp

Filesize
40KB

Download
memory/4940-12-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/4940-16-0x0000000006880000-0x0000000006892000-memory.dmp

Filesize
72KB

Download
memory/4940-14-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/4940-19-0x0000000006F00000-0x0000000006F3C000-memory.dmp

Filesize
240KB

Download
memory/4940-24-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads