quasar | e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

Analysis

max time kernel
134s
max time network
145s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
04-12-2024 03:28

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General

Target

e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
Size

3.7MB
MD5

96493f8a0252e4e492de924d83db5a8a
SHA1

09dad264469e86a858f0183ed6e5bfe2d53781f4
SHA256

e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879
SHA512

29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78
SSDEEP

49152:wBeT66BYzsKDeAo4hJFXMOqlI9XGhvPEpCaZKfpObuLkEnmnK0QnFRhe5+ET8QVY:TTF7GbIlDvPEpz4ptnHhK87nhUnIJb

Score

10^/10

quasar jekwu discovery execution spyware trojan

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

JEKWU

Zyg.ydns.eu:5829

Opy.ydns.eu:5829

Mutex

9c58b2ba-07eb-415a-b48b-21bbb68d32285e

Attributes

encryption_key
C5B555A83D127A9553D4FB1FCECB35CE8E91A447
install_name
outlooks.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Outlooks
subdirectory
WindowsUpdates

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/2916-31-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2916-28-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2916-25-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2916-29-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2916-23-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
1908	powershell.exe
2140	powershell.exe
2876	powershell.exe
2736	powershell.exe

Executes dropped EXE 2 IoCs

Processes:

outlooks.exeoutlooks.exe

pid	Process
2420	outlooks.exe
680	outlooks.exe

Loads dropped DLL 1 IoCs

Processes:

e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe

pid	Process
2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exeoutlooks.exe

description	pid	Process	procid_target
PID 1792 set thread context of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 2420 set thread context of 680	2420	outlooks.exe	47

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 12 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:

powershell.exeschtasks.exee14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exeoutlooks.exee14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exepowershell.exepowershell.exeschtasks.exeoutlooks.exeschtasks.exeschtasks.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outlooks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outlooks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid	Process
2744	schtasks.exe
688	schtasks.exe
2396	schtasks.exe
1084	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2876	powershell.exe
2736	powershell.exe
1908	powershell.exe
2140	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

powershell.exepowershell.exee14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exepowershell.exepowershell.exeoutlooks.exe

description	pid	Process
Token: SeDebugPrivilege	2876	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	2140	powershell.exe
Token: SeDebugPrivilege	680	outlooks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

outlooks.exe

pid	Process
680	outlooks.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exee14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exeoutlooks.exeoutlooks.exe

description	pid	Process	procid_target
PID 1792 wrote to memory of 2876	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	31
PID 1792 wrote to memory of 2876	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	31
PID 1792 wrote to memory of 2876	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	31
PID 1792 wrote to memory of 2876	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	31
PID 1792 wrote to memory of 2736	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	33
PID 1792 wrote to memory of 2736	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	33
PID 1792 wrote to memory of 2736	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	33
PID 1792 wrote to memory of 2736	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	33
PID 1792 wrote to memory of 2744	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	34
PID 1792 wrote to memory of 2744	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	34
PID 1792 wrote to memory of 2744	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	34
PID 1792 wrote to memory of 2744	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	34
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 1792 wrote to memory of 2916	1792	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	37
PID 2916 wrote to memory of 688	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	38
PID 2916 wrote to memory of 688	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	38
PID 2916 wrote to memory of 688	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	38
PID 2916 wrote to memory of 688	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	38
PID 2916 wrote to memory of 2420	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	40
PID 2916 wrote to memory of 2420	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	40
PID 2916 wrote to memory of 2420	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	40
PID 2916 wrote to memory of 2420	2916	e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe	40
PID 2420 wrote to memory of 1908	2420	outlooks.exe	41
PID 2420 wrote to memory of 1908	2420	outlooks.exe	41
PID 2420 wrote to memory of 1908	2420	outlooks.exe	41
PID 2420 wrote to memory of 1908	2420	outlooks.exe	41
PID 2420 wrote to memory of 2140	2420	outlooks.exe	43
PID 2420 wrote to memory of 2140	2420	outlooks.exe	43
PID 2420 wrote to memory of 2140	2420	outlooks.exe	43
PID 2420 wrote to memory of 2140	2420	outlooks.exe	43
PID 2420 wrote to memory of 2396	2420	outlooks.exe	45
PID 2420 wrote to memory of 2396	2420	outlooks.exe	45
PID 2420 wrote to memory of 2396	2420	outlooks.exe	45
PID 2420 wrote to memory of 2396	2420	outlooks.exe	45
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 2420 wrote to memory of 680	2420	outlooks.exe	47
PID 680 wrote to memory of 1084	680	outlooks.exe	48
PID 680 wrote to memory of 1084	680	outlooks.exe	48
PID 680 wrote to memory of 1084	680	outlooks.exe	48
PID 680 wrote to memory of 1084	680	outlooks.exe	48

C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
"C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2876
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EPhabVgXw.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2736
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp37A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2744
- C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe
  "C:\Users\Admin\AppData\Local\Temp\e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:688
- - C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
    "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2420
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1908
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\EPhabVgXw.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2140
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp473D.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2396
  - - C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe
      "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:680
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "schtasks" /create /tn "Outlooks" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe" /rl HIGHEST /f
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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\Temp\tmp37A.tmp

Filesize
1KB

MD5
4887894597819ce06dad3ed1a45c6ae7

SHA1
91a1363c4bcf35b4b104886a26e55a9b4d031fb7

SHA256
782881d7161754ac9e61f760de99a08413d6c4605a6a9e58aab45012c615dde9

SHA512
d92b2bca9901f334c17a58da292d3cabae0d5ec136ad8305c6d7394b76ad3a6fb7f71d8b48b52f00e5c3bd17d09184be233480cb30f3d6fb87dbbd21456813db

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\SS9YOBBPGDFPMM4Q2FPG.temp

Filesize
7KB

MD5
7e1efe3c7da68dc4ab1c4c68059c3549

SHA1
c6a7cb60017add46fcfa3e5b3e44437c7c91ee2e

SHA256
ee88a8630034ee038eb11c45af55928650ab83b3e3101850ca9d3cf8f8bd8274

SHA512
b0b458b0804101339e426a32c0b89f6fb1d9dc71ca51b3a51dfd32b9f144b9352504e932cb6ad240834e6eddeb275523a978a0b93a57b3e7dc60a3884449b9bd

Download Submit
C:\Users\Admin\AppData\Roaming\WindowsUpdates\outlooks.exe

Filesize
3.7MB

MD5
96493f8a0252e4e492de924d83db5a8a

SHA1
09dad264469e86a858f0183ed6e5bfe2d53781f4

SHA256
e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

SHA512
29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

Download Submit
memory/680-61-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1792-32-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/1792-5-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/1792-6-0x0000000007BA0000-0x0000000007F08000-memory.dmp

Filesize
3.4MB

Download
memory/1792-4-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/1792-3-0x00000000003A0000-0x00000000003B8000-memory.dmp

Filesize
96KB

Download
memory/1792-1-0x0000000001260000-0x000000000160C000-memory.dmp

Filesize
3.7MB

Download
memory/1792-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/1792-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2420-40-0x00000000009F0000-0x0000000000D9C000-memory.dmp

Filesize
3.7MB

Download
memory/2916-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2916-25-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-29-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-23-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-21-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-28-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-31-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2916-19-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download