quasar | 18ef1073b11b6020393e588a9e799695fdf9431d78bdf82ceb9b071a84439282

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-11-2024 01:08

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General

Target

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4836-11-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Executes dropped EXE 4 IoCs

Processes:

windows.exewindows.exewindows.exewindows.exe

pid	Process
2932	windows.exe
1984	windows.exe
2444	windows.exe
3536	windows.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exewindows.exe

description	pid	Process	procid_target
PID 4560 set thread context of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 2932 set thread context of 3536	2932	windows.exe	105

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:

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exeschtasks.exewindows.exewindows.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
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

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
224	schtasks.exe
2988	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exewindows.exe

pid	Process
4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
2932	windows.exe
2932	windows.exe
2932	windows.exe
2932	windows.exe
2932	windows.exe
2932	windows.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exewindows.exewindows.exe

description	pid	Process
Token: SeDebugPrivilege	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
Token: SeDebugPrivilege	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
Token: SeDebugPrivilege	2932	windows.exe
Token: SeDebugPrivilege	3536	windows.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

windows.exe

pid	Process
3536	windows.exe
3536	windows.exe

Suspicious use of SendNotifyMessage 2 IoCs

Processes:

windows.exe

pid	Process
3536	windows.exe
3536	windows.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

windows.exe

pid	Process
3536	windows.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exewindows.exewindows.exe

description	pid	Process	procid_target
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4560 wrote to memory of 4836	4560	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	97
PID 4836 wrote to memory of 224	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	98
PID 4836 wrote to memory of 224	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	98
PID 4836 wrote to memory of 224	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	98
PID 4836 wrote to memory of 2932	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	100
PID 4836 wrote to memory of 2932	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	100
PID 4836 wrote to memory of 2932	4836	3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe	100
PID 2932 wrote to memory of 1984	2932	windows.exe	103
PID 2932 wrote to memory of 1984	2932	windows.exe	103
PID 2932 wrote to memory of 1984	2932	windows.exe	103
PID 2932 wrote to memory of 2444	2932	windows.exe	104
PID 2932 wrote to memory of 2444	2932	windows.exe	104
PID 2932 wrote to memory of 2444	2932	windows.exe	104
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 2932 wrote to memory of 3536	2932	windows.exe	105
PID 3536 wrote to memory of 2988	3536	windows.exe	106
PID 3536 wrote to memory of 2988	3536	windows.exe	106
PID 3536 wrote to memory of 2988	3536	windows.exe	106

C:\Users\Admin\AppData\Local\Temp\3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
"C:\Users\Admin\AppData\Local\Temp\3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Users\Admin\AppData\Local\Temp\3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe
  "C:\Users\Admin\AppData\Local\Temp\3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4836
- - 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:224
- - 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:2932
  - - C:\Users\Admin\AppData\Roaming\SubDir\windows.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe"
      4⤵
      Executes dropped EXE
      PID:1984
  - - C:\Users\Admin\AppData\Roaming\SubDir\windows.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\windows.exe"
      4⤵
      Executes dropped EXE
      PID:2444
  - - 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:3536
    - - 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:2988

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540.exe.log

Filesize
1KB

MD5
8ec831f3e3a3f77e4a7b9cd32b48384c

SHA1
d83f09fd87c5bd86e045873c231c14836e76a05c

SHA256
7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

SHA512
26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

Download Submit
C:\Users\Admin\AppData\Roaming\SubDir\windows.exe

Filesize
3.6MB

MD5
344f6de65a483ad7a020969700d09d72

SHA1
c8ce64edf227beadb3b445f2ded81313b885f1ae

SHA256
3500bbffeb19a0e63ba255abcbc2f7c3a5985aa6f4eda3490dd7a795bc546540

SHA512
de6637315b3900cace3bbc096ea459310b265835c00cb769f5bf29a8ec2592e3db1c74656099886fe4a5afcaec33e8a9dacaaa0a88c65d2be9e40478e6f1646c

Download Submit
memory/2932-32-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2932-23-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2932-24-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2932-25-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/2932-26-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/3536-38-0x00000000082B0000-0x00000000082C2000-memory.dmp

Filesize
72KB

Download
memory/3536-33-0x0000000007030000-0x0000000007648000-memory.dmp

Filesize
6.1MB

Download
memory/3536-34-0x0000000006BC0000-0x0000000006C10000-memory.dmp

Filesize
320KB

Download
memory/3536-35-0x0000000006E20000-0x0000000006ED2000-memory.dmp

Filesize
712KB

Download
memory/3536-39-0x0000000008310000-0x000000000834C000-memory.dmp

Filesize
240KB

Download
memory/3536-40-0x00000000083C0000-0x0000000008426000-memory.dmp

Filesize
408KB

Download
memory/4560-7-0x0000000005E50000-0x0000000005E6E000-memory.dmp

Filesize
120KB

Download
memory/4560-6-0x0000000005D40000-0x0000000005DDC000-memory.dmp

Filesize
624KB

Download
memory/4560-14-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4560-1-0x0000000000D20000-0x00000000010BA000-memory.dmp

Filesize
3.6MB

Download
memory/4560-2-0x0000000006060000-0x0000000006604000-memory.dmp

Filesize
5.6MB

Download
memory/4560-3-0x0000000005AB0000-0x0000000005B42000-memory.dmp

Filesize
584KB

Download
memory/4560-10-0x0000000008510000-0x0000000008876000-memory.dmp

Filesize
3.4MB

Download
memory/4560-9-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4560-8-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/4560-0-0x0000000074BEE000-0x0000000074BEF000-memory.dmp

Filesize
4KB

Download
memory/4560-4-0x0000000005C50000-0x0000000005C5A000-memory.dmp

Filesize
40KB

Download
memory/4560-5-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4836-15-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4836-22-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download
memory/4836-11-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/4836-13-0x0000000074BE0000-0x0000000075390000-memory.dmp

Filesize
7.7MB

Download