quasar | e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

Analysis

max time kernel
136s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 13:00

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General

Target

Nowe zamówienie - 0072291855.pdf (243KB).com.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/2600-23-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2600-31-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2600-28-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2600-25-0x0000000000400000-0x0000000000724000-memory.dmp	family_quasar
behavioral1/memory/2600-29-0x0000000000400000-0x0000000000724000-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
1876	powershell.exe
2744	powershell.exe
2396	powershell.exe
532	powershell.exe

Executes dropped EXE 2 IoCs

Processes:

outlooks.exeoutlooks.exe

pid	Process
2272	outlooks.exe
2768	outlooks.exe

Loads dropped DLL 1 IoCs

Processes:

Nowe zamówienie - 0072291855.pdf (243KB).com.exe

pid	Process
2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Nowe zamówienie - 0072291855.pdf (243KB).com.exeoutlooks.exe

description	pid	Process	procid_target
PID 2684 set thread context of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2272 set thread context of 2768	2272	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:

Nowe zamówienie - 0072291855.pdf (243KB).com.exepowershell.exeoutlooks.exeNowe zamówienie - 0072291855.pdf (243KB).com.exepowershell.exeschtasks.exeoutlooks.exeschtasks.exepowershell.exeschtasks.exepowershell.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nowe zamówienie - 0072291855.pdf (243KB).com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	outlooks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nowe zamówienie - 0072291855.pdf (243KB).com.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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2568	schtasks.exe
2940	schtasks.exe
2644	schtasks.exe
2252	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	Process
2744	powershell.exe
2396	powershell.exe
1876	powershell.exe
532	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

powershell.exepowershell.exeNowe zamówienie - 0072291855.pdf (243KB).com.exepowershell.exepowershell.exeoutlooks.exe

description	pid	Process
Token: SeDebugPrivilege	2744	powershell.exe
Token: SeDebugPrivilege	2396	powershell.exe
Token: SeDebugPrivilege	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe
Token: SeDebugPrivilege	1876	powershell.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	2768	outlooks.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

outlooks.exe

pid	Process
2768	outlooks.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

Nowe zamówienie - 0072291855.pdf (243KB).com.exeNowe zamówienie - 0072291855.pdf (243KB).com.exeoutlooks.exeoutlooks.exe

description	pid	Process	procid_target
PID 2684 wrote to memory of 2744	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	31
PID 2684 wrote to memory of 2744	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	31
PID 2684 wrote to memory of 2744	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	31
PID 2684 wrote to memory of 2744	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	31
PID 2684 wrote to memory of 2396	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	33
PID 2684 wrote to memory of 2396	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	33
PID 2684 wrote to memory of 2396	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	33
PID 2684 wrote to memory of 2396	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	33
PID 2684 wrote to memory of 2568	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	34
PID 2684 wrote to memory of 2568	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	34
PID 2684 wrote to memory of 2568	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	34
PID 2684 wrote to memory of 2568	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	34
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2684 wrote to memory of 2600	2684	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	37
PID 2600 wrote to memory of 2940	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	38
PID 2600 wrote to memory of 2940	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	38
PID 2600 wrote to memory of 2940	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	38
PID 2600 wrote to memory of 2940	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	38
PID 2600 wrote to memory of 2272	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	40
PID 2600 wrote to memory of 2272	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	40
PID 2600 wrote to memory of 2272	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	40
PID 2600 wrote to memory of 2272	2600	Nowe zamówienie - 0072291855.pdf (243KB).com.exe	40
PID 2272 wrote to memory of 532	2272	outlooks.exe	41
PID 2272 wrote to memory of 532	2272	outlooks.exe	41
PID 2272 wrote to memory of 532	2272	outlooks.exe	41
PID 2272 wrote to memory of 532	2272	outlooks.exe	41
PID 2272 wrote to memory of 1876	2272	outlooks.exe	42
PID 2272 wrote to memory of 1876	2272	outlooks.exe	42
PID 2272 wrote to memory of 1876	2272	outlooks.exe	42
PID 2272 wrote to memory of 1876	2272	outlooks.exe	42
PID 2272 wrote to memory of 2644	2272	outlooks.exe	43
PID 2272 wrote to memory of 2644	2272	outlooks.exe	43
PID 2272 wrote to memory of 2644	2272	outlooks.exe	43
PID 2272 wrote to memory of 2644	2272	outlooks.exe	43
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2272 wrote to memory of 2768	2272	outlooks.exe	47
PID 2768 wrote to memory of 2252	2768	outlooks.exe	48
PID 2768 wrote to memory of 2252	2768	outlooks.exe	48
PID 2768 wrote to memory of 2252	2768	outlooks.exe	48
PID 2768 wrote to memory of 2252	2768	outlooks.exe	48

C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe
"C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2684
- 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\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2744
- 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:2396
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2CBB.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2568
- C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe
  "C:\Users\Admin\AppData\Local\Temp\Nowe zamówienie - 0072291855.pdf (243KB).com.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2600
- - 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:2940
- - 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:2272
  - - 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:532
  - - 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:1876
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\EPhabVgXw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72FE.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2644
  - - 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:2768
    - - 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:2252

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\tmp2CBB.tmp

Filesize
1KB

MD5
0169a0bf4346f4668b293db271556482

SHA1
a14ae1408ccd3058fb14d612cb5f156f9590e448

SHA256
32ad03fb6c054d85d788c914de53960233dd916780a65bec1c236bf297d08160

SHA512
b59a2d61c72b4c8bc6c7cda0068b0146de72ddc12c2b5d1479dc50ca943327e14569a4be06153f2df9f7f88b416447c548d15082ffb96da32ebdac2e97149c9f

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
455773e834557bb2578805f73d47779a

SHA1
6f9bde886172de3e6a7bb12e8abdeb4138f4295c

SHA256
89935d870d12d6d97f88e5690903209a94c10c4a2754a4f16607385d458d96e8

SHA512
bc30dd5a474dd2ea65793b69d185e4d13adf39c5846b2a50b79816733ccd1b75ec77f4ff0fafb47098eef3c3df4268c28c0376870989e8d1c5e77aa21ac6cdef

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

Filesize
3.7MB

MD5
96493f8a0252e4e492de924d83db5a8a

SHA1
09dad264469e86a858f0183ed6e5bfe2d53781f4

SHA256
e14c8cd3613b5d94cd5ca407fd329b61954add690c779edbd41b362d035f7879

SHA512
29d6192b4aae0af83fe15d015be5cf3e1b8832e154c6e847d71de1834c30421f435192490fc9f5b868c99e71f2bbdb92685582985ece2e7694d02799cd315b78

Download Submit
memory/2272-40-0x0000000000DD0000-0x000000000117C000-memory.dmp

Filesize
3.7MB

Download
memory/2600-22-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2600-29-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-19-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-25-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-23-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-31-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2600-28-0x0000000000400000-0x0000000000724000-memory.dmp

Filesize
3.1MB

Download
memory/2684-32-0x0000000074840000-0x0000000074F2E000-memory.dmp

Filesize
6.9MB

Download
memory/2684-5-0x0000000074840000-0x0000000074F2E000-memory.dmp

Filesize
6.9MB

Download
memory/2684-3-0x00000000008F0000-0x0000000000908000-memory.dmp

Filesize
96KB

Download
memory/2684-0-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/2684-4-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/2684-6-0x0000000007C20000-0x0000000007F88000-memory.dmp

Filesize
3.4MB

Download
memory/2684-2-0x0000000074840000-0x0000000074F2E000-memory.dmp

Filesize
6.9MB

Download
memory/2684-1-0x0000000001010000-0x00000000013BC000-memory.dmp

Filesize
3.7MB

Download
memory/2768-56-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download