quasar | 29533c09c2ca85885835c2c3cbe3cba61b4310f14c170cc52bfc0d1bbf1779f5

Analysis

max time kernel
128s
max time network
139s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
27-07-2024 01:19

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General

Target

76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
Size

615KB
MD5

76869ef841f2820d0bbadddc46fc3c9a
SHA1

e827d9b426e4ef75f31e6e9d81f47e70da3ac3a2
SHA256

29533c09c2ca85885835c2c3cbe3cba61b4310f14c170cc52bfc0d1bbf1779f5
SHA512

582047f529fae9eacf9b4c762904b21c1d430d219e77b9bc65730e89c00be5f666a452f95cd1b0af067480eb9abd4446bf9431aa4afe2a4f68ad8226d1c11995
SSDEEP

6144:QYhWwTVvvVDzRW1BHH3g1NWT+AKYEM+gW4SmSMX0zCVsVwX+v456/bT8GoaEKwae:dhHTVXFRW1ZpK2bNV0CgwuX8GmkAh

Score

10^/10

quasar venomrat rat discovery evasion rat rootkit spyware stealer trojan

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

RAT

23.105.131.178:7812

Mutex

VNM_MUTEX_It9SqdFDNndEItXfKp

Attributes

encryption_key
txgQXKaATimN7DY8jnPH
install_name
Windows Defender Security.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows Update
subdirectory
Microsoft

Signatures

Contains code to disable Windows Defender 4 IoCs

A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

Processes:

resource	yara_rule
behavioral1/files/0x0009000000012118-5.dat	disable_win_def
behavioral1/memory/2792-12-0x00000000008C0000-0x000000000094C000-memory.dmp	disable_win_def
behavioral1/memory/2624-21-0x0000000000950000-0x00000000009DC000-memory.dmp	disable_win_def
behavioral1/memory/280-90-0x00000000008F0000-0x000000000097C000-memory.dmp	disable_win_def

Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs

evasion trojan

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

Processes:

Windows Defender Security.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	Windows Defender Security.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	Windows Defender Security.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	Windows Defender Security.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	Windows Defender Security.exe

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

Quasar payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0009000000012118-5.dat	family_quasar
behavioral1/memory/2792-12-0x00000000008C0000-0x000000000094C000-memory.dmp	family_quasar
behavioral1/memory/2624-21-0x0000000000950000-0x00000000009DC000-memory.dmp	family_quasar
behavioral1/memory/280-90-0x00000000008F0000-0x000000000097C000-memory.dmp	family_quasar

VenomRAT
VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
rat rootkit stealer venomrat

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2360	cmd.exe

Executes dropped EXE 3 IoCs

Processes:

Windows Defender Security.exeWindows Defender Security.exeWindows Defender Security.exe

pid	Process
2792	Windows Defender Security.exe
2624	Windows Defender Security.exe
280	Windows Defender Security.exe

Loads dropped DLL 2 IoCs

Processes:

76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exeWindows Defender Security.exe

pid	Process
2408	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
2792	Windows Defender Security.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

Windows Defender Security.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	Windows Defender Security.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	Windows Defender Security.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.

Processes:

flow	ioc
2	ip-api.com

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:

schtasks.execmd.exePING.EXEWindows Defender Security.exeschtasks.exeWindows Defender Security.exepowershell.exeWindows Defender Security.exe76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.execmd.execmd.exechcp.com

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Windows Defender Security.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chcp.com

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

Processes:

PING.EXE

pid	Process
2540	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
2540	PING.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
1152	schtasks.exe
2580	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exeWindows Defender Security.exeWindows Defender Security.exe

pid	Process
3048	powershell.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
2792	Windows Defender Security.exe
280	Windows Defender Security.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

Windows Defender Security.exepowershell.exeWindows Defender Security.exeWindows Defender Security.exe

description	pid	Process
Token: SeDebugPrivilege	2792	Windows Defender Security.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeDebugPrivilege	2624	Windows Defender Security.exe
Token: SeDebugPrivilege	2624	Windows Defender Security.exe
Token: SeDebugPrivilege	280	Windows Defender Security.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Windows Defender Security.exe

pid	Process
2624	Windows Defender Security.exe

Suspicious use of WriteProcessMemory 44 IoCs

Processes:

76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exeWindows Defender Security.exeWindows Defender Security.execmd.execmd.exe

description	pid	Process	procid_target
PID 2408 wrote to memory of 2792	2408	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2792	2408	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2792	2408	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	30
PID 2408 wrote to memory of 2792	2408	76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2580	2792	Windows Defender Security.exe	32
PID 2792 wrote to memory of 2580	2792	Windows Defender Security.exe	32
PID 2792 wrote to memory of 2580	2792	Windows Defender Security.exe	32
PID 2792 wrote to memory of 2580	2792	Windows Defender Security.exe	32
PID 2792 wrote to memory of 2624	2792	Windows Defender Security.exe	34
PID 2792 wrote to memory of 2624	2792	Windows Defender Security.exe	34
PID 2792 wrote to memory of 2624	2792	Windows Defender Security.exe	34
PID 2792 wrote to memory of 2624	2792	Windows Defender Security.exe	34
PID 2792 wrote to memory of 3048	2792	Windows Defender Security.exe	35
PID 2792 wrote to memory of 3048	2792	Windows Defender Security.exe	35
PID 2792 wrote to memory of 3048	2792	Windows Defender Security.exe	35
PID 2792 wrote to memory of 3048	2792	Windows Defender Security.exe	35
PID 2624 wrote to memory of 1152	2624	Windows Defender Security.exe	37
PID 2624 wrote to memory of 1152	2624	Windows Defender Security.exe	37
PID 2624 wrote to memory of 1152	2624	Windows Defender Security.exe	37
PID 2624 wrote to memory of 1152	2624	Windows Defender Security.exe	37
PID 2792 wrote to memory of 3036	2792	Windows Defender Security.exe	39
PID 2792 wrote to memory of 3036	2792	Windows Defender Security.exe	39
PID 2792 wrote to memory of 3036	2792	Windows Defender Security.exe	39
PID 2792 wrote to memory of 3036	2792	Windows Defender Security.exe	39
PID 3036 wrote to memory of 2360	3036	cmd.exe	41
PID 3036 wrote to memory of 2360	3036	cmd.exe	41
PID 3036 wrote to memory of 2360	3036	cmd.exe	41
PID 3036 wrote to memory of 2360	3036	cmd.exe	41
PID 2792 wrote to memory of 2220	2792	Windows Defender Security.exe	42
PID 2792 wrote to memory of 2220	2792	Windows Defender Security.exe	42
PID 2792 wrote to memory of 2220	2792	Windows Defender Security.exe	42
PID 2792 wrote to memory of 2220	2792	Windows Defender Security.exe	42
PID 2220 wrote to memory of 752	2220	cmd.exe	44
PID 2220 wrote to memory of 752	2220	cmd.exe	44
PID 2220 wrote to memory of 752	2220	cmd.exe	44
PID 2220 wrote to memory of 752	2220	cmd.exe	44
PID 2220 wrote to memory of 2540	2220	cmd.exe	45
PID 2220 wrote to memory of 2540	2220	cmd.exe	45
PID 2220 wrote to memory of 2540	2220	cmd.exe	45
PID 2220 wrote to memory of 2540	2220	cmd.exe	45
PID 2220 wrote to memory of 280	2220	cmd.exe	46
PID 2220 wrote to memory of 280	2220	cmd.exe	46
PID 2220 wrote to memory of 280	2220	cmd.exe	46
PID 2220 wrote to memory of 280	2220	cmd.exe	46

C:\Users\Admin\AppData\Local\Temp\76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\76869ef841f2820d0bbadddc46fc3c9a_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2408
- C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe
  "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe"
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Executes dropped EXE
  - Loads dropped DLL
  - Windows security modification
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe" /rl HIGHEST /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2580
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2624
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Windows Defender Security.exe" /rl HIGHEST /f
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1152
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Get-MpPreference -verbose
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3048
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3036
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*
      4⤵
      Deletes itself
      System Location Discovery: System Language Discovery
      PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\oWQxRTgC8Aaa.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2220
  - - C:\Windows\SysWOW64\chcp.com
      chcp 65001
      4⤵
      System Location Discovery: System Language Discovery
      PID:752
  - - C:\Windows\SysWOW64\PING.EXE
      ping -n 10 localhost
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:2540
  - - C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe
      "C:\Users\Admin\AppData\Roaming\Windows Defender Security.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:280

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab4D67.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4D89.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\oWQxRTgC8Aaa.bat

Filesize
219B

MD5
d77bbc4547501ee82b6c7d0ec8c0c5da

SHA1
c7024dd8f80842b57e35e33dd5555fb0d8988245

SHA256
7b806aac20793ae8b697fc3fffcade8cac8d24627809bc9e812cf41830016b52

SHA512
a1f338aa9ac7c9953f74bfebab1da713a3dbc4b66c23ae056b43d37213d9dea1b5173229df12a5bef2fec715748d11d181da3c00b923320ec2a2f241ef066205

Download Submit
\Users\Admin\AppData\Roaming\Windows Defender Security.exe

Filesize
535KB

MD5
0bd3018c9c566328497be54c7d882159

SHA1
8d90c23ee373ab935ba930f25c96374762c4a5a6

SHA256
026971c3fba531247627dd9f3f7d51c566d8df28a52332bd3d0eb8ca55d96176

SHA512
90cfde84ae14de5151c4950b8f8fe05d108a9716f3e0c104e2793a9c8bbb6a4385fe24a1bd9bc020cd061a128bb258ef44ef8679ac4b0e8a280107b22ed9e8cc

Download Submit
memory/280-90-0x00000000008F0000-0x000000000097C000-memory.dmp

Filesize
560KB

Download
memory/2408-1-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/2408-2-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/2408-10-0x0000000074B20000-0x00000000750CB000-memory.dmp

Filesize
5.7MB

Download
memory/2408-0-0x0000000074B21000-0x0000000074B22000-memory.dmp

Filesize
4KB

Download
memory/2624-21-0x0000000000950000-0x00000000009DC000-memory.dmp

Filesize
560KB

Download
memory/2792-13-0x0000000072B10000-0x00000000731FE000-memory.dmp

Filesize
6.9MB

Download
memory/2792-77-0x0000000072B1E000-0x0000000072B1F000-memory.dmp

Filesize
4KB

Download
memory/2792-78-0x0000000072B10000-0x00000000731FE000-memory.dmp

Filesize
6.9MB

Download
memory/2792-12-0x00000000008C0000-0x000000000094C000-memory.dmp

Filesize
560KB

Download
memory/2792-87-0x0000000072B10000-0x00000000731FE000-memory.dmp

Filesize
6.9MB

Download
memory/2792-11-0x0000000072B1E000-0x0000000072B1F000-memory.dmp

Filesize
4KB

Download