quasar | 6a35201b5275aa3f2da2f383dd290a839a3e0eebb596d93dfab5a1c9a5b26728

Analysis

max time kernel
291s
max time network
303s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
14-02-2025 01:53

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General

Target

Nueva Orden de Compra.exe
Size

899KB
MD5

da4bdaef912fbec33c8f6c787c951420
SHA1

db3d1d6ee8647c350d19bbc0bb0509811373d436
SHA256

5017f298316f0ee887a1251d0cff9549d98feb8fbca8a4cdf83ef2ade555adb2
SHA512

9673db99e7e194d7e9c402f6066f14245f9cc5e1ab133ad7b45a76f4c2c7d1b3d9d3c14974fe469bda6e959223205ebd2b047e486b17bd2ed8f3d8c6221540a6
SSDEEP

24576:AvjQG02u/rcfrYbJ1G3FroaICdyk6ljh:eQwercsbXONoaPds

Score

10^/10

quasar stroy3 discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Stroy3

twentyfivev.crabdance.com:61538

127.0.0.1:61538

Mutex

QSR_MUTEX_jgYB0FbAXwuBLBMCAM

Attributes

encryption_key
7ghxCAmzO7RIdS51gVaQ
install_name
cpdater.exe
log_directory
Logs
reconnect_delay
3000
startup_key
cindows cpdater
subdirectory
cindows

Signatures

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

Quasar payload 3 IoCs

resource	yara_rule
behavioral1/memory/2784-5-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2784-9-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar
behavioral1/memory/2784-7-0x0000000000400000-0x000000000045E000-memory.dmp	family_quasar

Executes dropped EXE 3 IoCs

pid	Process
2616	cpdater.exe
2224	cpdater.exe
1524	cpdater.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	Nueva Orden de Compra.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
2	ip-api.com

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2492 set thread context of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 set thread context of 2896	2492	Nueva Orden de Compra.exe	31
PID 2616 set thread context of 2224	2616	cpdater.exe	36
PID 2616 set thread context of 1524	2616	cpdater.exe	37

System Location Discovery: System Language Discovery 1 TTPs 7 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	Nueva Orden de Compra.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nueva Orden de Compra.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpdater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpdater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpdater.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2184	schtasks.exe
2816	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	Nueva Orden de Compra.exe
Token: SeDebugPrivilege	2784	Nueva Orden de Compra.exe
Token: SeDebugPrivilege	2616	cpdater.exe
Token: SeDebugPrivilege	2224	cpdater.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2784	2492	Nueva Orden de Compra.exe	30
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2492 wrote to memory of 2896	2492	Nueva Orden de Compra.exe	31
PID 2784 wrote to memory of 2184	2784	Nueva Orden de Compra.exe	33
PID 2784 wrote to memory of 2184	2784	Nueva Orden de Compra.exe	33
PID 2784 wrote to memory of 2184	2784	Nueva Orden de Compra.exe	33
PID 2784 wrote to memory of 2184	2784	Nueva Orden de Compra.exe	33
PID 2784 wrote to memory of 2616	2784	Nueva Orden de Compra.exe	35
PID 2784 wrote to memory of 2616	2784	Nueva Orden de Compra.exe	35
PID 2784 wrote to memory of 2616	2784	Nueva Orden de Compra.exe	35
PID 2784 wrote to memory of 2616	2784	Nueva Orden de Compra.exe	35
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 2224	2616	cpdater.exe	36
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2616 wrote to memory of 1524	2616	cpdater.exe	37
PID 2224 wrote to memory of 2816	2224	cpdater.exe	38
PID 2224 wrote to memory of 2816	2224	cpdater.exe	38
PID 2224 wrote to memory of 2816	2224	cpdater.exe	38
PID 2224 wrote to memory of 2816	2224	cpdater.exe	38

C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe
"C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2492
- C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe
  "C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "cindows cpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2184
- - C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe
    "C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2616
  - - C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe
      C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2224
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "cindows cpdater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2816
  - - C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe
      C:\Users\Admin\AppData\Roaming\cindows\cpdater.exe
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1524
- C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe
  "C:\Users\Admin\AppData\Local\Temp\Nueva Orden de Compra.exe"
  2⤵
  PID:2896

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

\Users\Admin\AppData\Roaming\cindows\cpdater.exe

Filesize
899KB

MD5
da4bdaef912fbec33c8f6c787c951420

SHA1
db3d1d6ee8647c350d19bbc0bb0509811373d436

SHA256
5017f298316f0ee887a1251d0cff9549d98feb8fbca8a4cdf83ef2ade555adb2

SHA512
9673db99e7e194d7e9c402f6066f14245f9cc5e1ab133ad7b45a76f4c2c7d1b3d9d3c14974fe469bda6e959223205ebd2b047e486b17bd2ed8f3d8c6221540a6

Download Submit
memory/2492-11-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2492-2-0x0000000006F90000-0x0000000007096000-memory.dmp

Filesize
1.0MB

Download
memory/2492-3-0x00000000001A0000-0x00000000001A6000-memory.dmp

Filesize
24KB

Download
memory/2492-4-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2492-1-0x0000000000D50000-0x0000000000E36000-memory.dmp

Filesize
920KB

Download
memory/2492-0-0x0000000074C6E000-0x0000000074C6F000-memory.dmp

Filesize
4KB

Download
memory/2616-21-0x0000000000E70000-0x0000000000F56000-memory.dmp

Filesize
920KB

Download
memory/2784-10-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-7-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2784-12-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-13-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-9-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2784-20-0x0000000074C60000-0x000000007534E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-5-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads