quasar | 3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540

Analysis

max time kernel
147s
max time network
152s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
01-11-2024 20:51

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General

Target

344f6de65a483ad7a020969700d09d72.exe
Size

3.6MB
MD5

344f6de65a483ad7a020969700d09d72
SHA1

c8ce64edf227beadb3b445f2ded81313b885f1ae
SHA256

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540
SHA512

de6637315b3900cace3bbc096ea459310b265835c00cb769f5bf29a8ec2592e3db1c74656099886fe4a5afcaec33e8a9dacaaa0a88c65d2be9e40478e6f1646c
SSDEEP

98304:6P4PLLSLRqETI5tSTGkmJhCyUqeuanHOp8:rUClJhCyUqGnHY

Score

10^/10

quasar ikeya discovery spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Ikeya

ikeya.ydns.eu:1979

Mutex

4d6bdac9-e1ab-48f1-a31b-211bd19cfad1

Attributes

encryption_key
06D26BCF3E82015C2B11E1D89A21612299A5931B
install_name
windows.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

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

Quasar payload 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2496-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2496-17-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2496-21-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2496-15-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2496-12-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 2 IoCs

Processes:

windows.exewindows.exe

pid	Process
2820	windows.exe
2516	windows.exe

Loads dropped DLL 1 IoCs

Processes:

344f6de65a483ad7a020969700d09d72.exe

pid	Process
2496	344f6de65a483ad7a020969700d09d72.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

344f6de65a483ad7a020969700d09d72.exewindows.exe

description	pid	Process	procid_target
PID 1832 set thread context of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 2820 set thread context of 2516	2820	windows.exe	35

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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

Processes:

schtasks.exewindows.exewindows.exeschtasks.exe344f6de65a483ad7a020969700d09d72.exe344f6de65a483ad7a020969700d09d72.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	344f6de65a483ad7a020969700d09d72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	344f6de65a483ad7a020969700d09d72.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
108	schtasks.exe
2828	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

344f6de65a483ad7a020969700d09d72.exewindows.exe

pid	Process
1832	344f6de65a483ad7a020969700d09d72.exe
1832	344f6de65a483ad7a020969700d09d72.exe
1832	344f6de65a483ad7a020969700d09d72.exe
2820	windows.exe
2820	windows.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

344f6de65a483ad7a020969700d09d72.exe344f6de65a483ad7a020969700d09d72.exewindows.exewindows.exe

description	pid	Process
Token: SeDebugPrivilege	1832	344f6de65a483ad7a020969700d09d72.exe
Token: SeDebugPrivilege	2496	344f6de65a483ad7a020969700d09d72.exe
Token: SeDebugPrivilege	2820	windows.exe
Token: SeDebugPrivilege	2516	windows.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

windows.exe

pid	Process
2516	windows.exe

Suspicious use of SendNotifyMessage 1 IoCs

Processes:

windows.exe

pid	Process
2516	windows.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

windows.exe

pid	Process
2516	windows.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

344f6de65a483ad7a020969700d09d72.exe344f6de65a483ad7a020969700d09d72.exewindows.exewindows.exe

description	pid	Process	procid_target
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 1832 wrote to memory of 2496	1832	344f6de65a483ad7a020969700d09d72.exe	31
PID 2496 wrote to memory of 2828	2496	344f6de65a483ad7a020969700d09d72.exe	32
PID 2496 wrote to memory of 2828	2496	344f6de65a483ad7a020969700d09d72.exe	32
PID 2496 wrote to memory of 2828	2496	344f6de65a483ad7a020969700d09d72.exe	32
PID 2496 wrote to memory of 2828	2496	344f6de65a483ad7a020969700d09d72.exe	32
PID 2496 wrote to memory of 2820	2496	344f6de65a483ad7a020969700d09d72.exe	34
PID 2496 wrote to memory of 2820	2496	344f6de65a483ad7a020969700d09d72.exe	34
PID 2496 wrote to memory of 2820	2496	344f6de65a483ad7a020969700d09d72.exe	34
PID 2496 wrote to memory of 2820	2496	344f6de65a483ad7a020969700d09d72.exe	34
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2820 wrote to memory of 2516	2820	windows.exe	35
PID 2516 wrote to memory of 108	2516	windows.exe	36
PID 2516 wrote to memory of 108	2516	windows.exe	36
PID 2516 wrote to memory of 108	2516	windows.exe	36
PID 2516 wrote to memory of 108	2516	windows.exe	36

C:\Users\Admin\AppData\Local\Temp\344f6de65a483ad7a020969700d09d72.exe
"C:\Users\Admin\AppData\Local\Temp\344f6de65a483ad7a020969700d09d72.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Users\Admin\AppData\Local\Temp\344f6de65a483ad7a020969700d09d72.exe
  "C:\Users\Admin\AppData\Local\Temp\344f6de65a483ad7a020969700d09d72.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2828
- - C:\Users\Admin\AppData\Roaming\SubDir\windows.exe
    "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2820
  - - C:\Users\Admin\AppData\Roaming\SubDir\windows.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of FindShellTrayWindow
      Suspicious use of SendNotifyMessage
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2516
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:108

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 Information Discovery

T1082

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\SubDir\windows.exe

Filesize
3.6MB

MD5
344f6de65a483ad7a020969700d09d72

SHA1
c8ce64edf227beadb3b445f2ded81313b885f1ae

SHA256
3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540

SHA512
de6637315b3900cace3bbc096ea459310b265835c00cb769f5bf29a8ec2592e3db1c74656099886fe4a5afcaec33e8a9dacaaa0a88c65d2be9e40478e6f1646c

Download Submit
memory/1832-0-0x0000000074C0E000-0x0000000074C0F000-memory.dmp

Filesize
4KB

Download
memory/1832-1-0x00000000010C0000-0x000000000145A000-memory.dmp

Filesize
3.6MB

Download
memory/1832-2-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/1832-3-0x0000000000550000-0x000000000056E000-memory.dmp

Filesize
120KB

Download
memory/1832-4-0x0000000074C0E000-0x0000000074C0F000-memory.dmp

Filesize
4KB

Download
memory/1832-5-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/1832-6-0x000000000AA80000-0x000000000ADE6000-memory.dmp

Filesize
3.4MB

Download
memory/1832-23-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-21-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-17-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-20-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-15-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2496-12-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-9-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-22-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/2496-8-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2496-31-0x0000000074C00000-0x00000000752EE000-memory.dmp

Filesize
6.9MB

Download
memory/2516-41-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-32-0x0000000000BE0000-0x0000000000F7A000-memory.dmp

Filesize
3.6MB

Download