Analysis
-
max time kernel
135s -
max time network
160s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
24-01-2024 14:58
Static task
static1
Behavioral task
behavioral1
Sample
7289c479c6a3839e87342411a5a49c54.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
7289c479c6a3839e87342411a5a49c54.exe
Resource
win10v2004-20231215-en
General
-
Target
7289c479c6a3839e87342411a5a49c54.exe
-
Size
657KB
-
MD5
7289c479c6a3839e87342411a5a49c54
-
SHA1
baf866517df277c66f2c13168b15119ba3ec3a92
-
SHA256
22101f7ae824387a41052dfc0891096efb5ab47859727131465eeadcc1412a58
-
SHA512
17397fe4a4d2bae32854d917ba706c37e266ab1cc1b8e9a41bb13a7ca92348aa894169388a4d5f96f1b9e31f40ee358caa07d537c9f67b94c2f3f219905eadc1
-
SSDEEP
12288:lVBbFriWGl7gO03m4sRqJ2IOEEVR/7r+pKnoqsxWbvoyF3db6e0RqsA7M:vBxrd4lA7OvR/fqKoqsxsvoyFtbsqsF
Malware Config
Extracted
quasar
2.1.0.0
Windows firewall
23.105.131.187:7812
VNM_MUTEX_zGeT5SjdI1pYgFyiav
-
encryption_key
3kpwI2tkVNrXY2Mm5wlR
-
install_name
Windows Security.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Windows Update
-
subdirectory
Windows Firewall Updates
Signatures
-
Contains code to disable Windows Defender 1 IoCs
A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
Processes:
resource yara_rule behavioral2/memory/3032-8-0x0000000000400000-0x000000000048C000-memory.dmp disable_win_def -
Processes:
7289c479c6a3839e87342411a5a49c54.exedescription ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" 7289c479c6a3839e87342411a5a49c54.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" 7289c479c6a3839e87342411a5a49c54.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" 7289c479c6a3839e87342411a5a49c54.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection 7289c479c6a3839e87342411a5a49c54.exe -
Quasar payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3032-8-0x0000000000400000-0x000000000048C000-memory.dmp family_quasar -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
7289c479c6a3839e87342411a5a49c54.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 7289c479c6a3839e87342411a5a49c54.exe -
Executes dropped EXE 2 IoCs
Processes:
Windows Security.exeWindows Security.exepid Process 3148 Windows Security.exe 2016 Windows Security.exe -
Processes:
7289c479c6a3839e87342411a5a49c54.exedescription ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features 7289c479c6a3839e87342411a5a49c54.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" 7289c479c6a3839e87342411a5a49c54.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
7289c479c6a3839e87342411a5a49c54.exe7289c479c6a3839e87342411a5a49c54.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\7289c479c6a3839e87342411a5a49c54.exe\"" 7289c479c6a3839e87342411a5a49c54.exe Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\QwXMCzbSAJ = "C:\\Users\\Admin\\AppData\\Roaming\\jXMDeSqECF\\tEWMqGdDFT.exe" 7289c479c6a3839e87342411a5a49c54.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 22 ip-api.com -
Suspicious use of SetThreadContext 3 IoCs
Processes:
7289c479c6a3839e87342411a5a49c54.exeWindows Security.exe7289c479c6a3839e87342411a5a49c54.exedescription pid Process procid_target PID 5104 set thread context of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 3148 set thread context of 2016 3148 Windows Security.exe 99 PID 952 set thread context of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid Process 1416 schtasks.exe 2220 schtasks.exe -
Runs ping.exe 1 TTPs 1 IoCs
-
Suspicious behavior: EnumeratesProcesses 14 IoCs
Processes:
powershell.exe7289c479c6a3839e87342411a5a49c54.exe7289c479c6a3839e87342411a5a49c54.exe7289c479c6a3839e87342411a5a49c54.exepid Process 3944 powershell.exe 3944 powershell.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 3032 7289c479c6a3839e87342411a5a49c54.exe 952 7289c479c6a3839e87342411a5a49c54.exe 952 7289c479c6a3839e87342411a5a49c54.exe 952 7289c479c6a3839e87342411a5a49c54.exe 952 7289c479c6a3839e87342411a5a49c54.exe 4288 7289c479c6a3839e87342411a5a49c54.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
7289c479c6a3839e87342411a5a49c54.exepowershell.exeWindows Security.exe7289c479c6a3839e87342411a5a49c54.exe7289c479c6a3839e87342411a5a49c54.exedescription pid Process Token: SeDebugPrivilege 3032 7289c479c6a3839e87342411a5a49c54.exe Token: SeDebugPrivilege 3944 powershell.exe Token: SeDebugPrivilege 2016 Windows Security.exe Token: SeDebugPrivilege 2016 Windows Security.exe Token: SeDebugPrivilege 952 7289c479c6a3839e87342411a5a49c54.exe Token: SeDebugPrivilege 4288 7289c479c6a3839e87342411a5a49c54.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Security.exepid Process 2016 Windows Security.exe -
Suspicious use of WriteProcessMemory 60 IoCs
Processes:
7289c479c6a3839e87342411a5a49c54.exe7289c479c6a3839e87342411a5a49c54.exeWindows Security.exeWindows Security.execmd.execmd.exe7289c479c6a3839e87342411a5a49c54.exedescription pid Process procid_target PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 5104 wrote to memory of 3032 5104 7289c479c6a3839e87342411a5a49c54.exe 87 PID 3032 wrote to memory of 1416 3032 7289c479c6a3839e87342411a5a49c54.exe 93 PID 3032 wrote to memory of 1416 3032 7289c479c6a3839e87342411a5a49c54.exe 93 PID 3032 wrote to memory of 1416 3032 7289c479c6a3839e87342411a5a49c54.exe 93 PID 3032 wrote to memory of 3148 3032 7289c479c6a3839e87342411a5a49c54.exe 97 PID 3032 wrote to memory of 3148 3032 7289c479c6a3839e87342411a5a49c54.exe 97 PID 3032 wrote to memory of 3148 3032 7289c479c6a3839e87342411a5a49c54.exe 97 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3148 wrote to memory of 2016 3148 Windows Security.exe 99 PID 3032 wrote to memory of 3944 3032 7289c479c6a3839e87342411a5a49c54.exe 98 PID 3032 wrote to memory of 3944 3032 7289c479c6a3839e87342411a5a49c54.exe 98 PID 3032 wrote to memory of 3944 3032 7289c479c6a3839e87342411a5a49c54.exe 98 PID 2016 wrote to memory of 2220 2016 Windows Security.exe 102 PID 2016 wrote to memory of 2220 2016 Windows Security.exe 102 PID 2016 wrote to memory of 2220 2016 Windows Security.exe 102 PID 3032 wrote to memory of 2032 3032 7289c479c6a3839e87342411a5a49c54.exe 104 PID 3032 wrote to memory of 2032 3032 7289c479c6a3839e87342411a5a49c54.exe 104 PID 3032 wrote to memory of 2032 3032 7289c479c6a3839e87342411a5a49c54.exe 104 PID 2032 wrote to memory of 4384 2032 cmd.exe 106 PID 2032 wrote to memory of 4384 2032 cmd.exe 106 PID 2032 wrote to memory of 4384 2032 cmd.exe 106 PID 3032 wrote to memory of 3420 3032 7289c479c6a3839e87342411a5a49c54.exe 107 PID 3032 wrote to memory of 3420 3032 7289c479c6a3839e87342411a5a49c54.exe 107 PID 3032 wrote to memory of 3420 3032 7289c479c6a3839e87342411a5a49c54.exe 107 PID 3420 wrote to memory of 5104 3420 cmd.exe 109 PID 3420 wrote to memory of 5104 3420 cmd.exe 109 PID 3420 wrote to memory of 5104 3420 cmd.exe 109 PID 3420 wrote to memory of 2408 3420 cmd.exe 110 PID 3420 wrote to memory of 2408 3420 cmd.exe 110 PID 3420 wrote to memory of 2408 3420 cmd.exe 110 PID 3420 wrote to memory of 952 3420 cmd.exe 111 PID 3420 wrote to memory of 952 3420 cmd.exe 111 PID 3420 wrote to memory of 952 3420 cmd.exe 111 PID 952 wrote to memory of 1260 952 7289c479c6a3839e87342411a5a49c54.exe 112 PID 952 wrote to memory of 1260 952 7289c479c6a3839e87342411a5a49c54.exe 112 PID 952 wrote to memory of 1260 952 7289c479c6a3839e87342411a5a49c54.exe 112 PID 952 wrote to memory of 1844 952 7289c479c6a3839e87342411a5a49c54.exe 113 PID 952 wrote to memory of 1844 952 7289c479c6a3839e87342411a5a49c54.exe 113 PID 952 wrote to memory of 1844 952 7289c479c6a3839e87342411a5a49c54.exe 113 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114 PID 952 wrote to memory of 4288 952 7289c479c6a3839e87342411a5a49c54.exe 114
Processes
-
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5104 -
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"2⤵
- Modifies Windows Defender Real-time Protection settings
- Checks computer location settings
- Windows security modification
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
PID:1416
-
-
C:\Users\Admin\AppData\Roaming\Windows Firewall Updates\Windows Security.exe"C:\Users\Admin\AppData\Roaming\Windows Firewall Updates\Windows Security.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3148 -
C:\Users\Admin\AppData\Roaming\Windows Firewall Updates\Windows Security.exe"C:\Users\Admin\AppData\Roaming\Windows Firewall Updates\Windows Security.exe"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2016 -
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Windows Update" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\Windows Firewall Updates\Windows Security.exe" /rl HIGHEST /f5⤵
- Creates scheduled task(s)
PID:2220
-
-
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell" Get-MpPreference -verbose3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3944
-
-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k start /b del /q/f/s %TEMP%\* & exit3⤵
- Suspicious use of WriteProcessMemory
PID:2032 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /K del /q/f/s C:\Users\Admin\AppData\Local\Temp\*4⤵PID:4384
-
-
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vGM9EVCUJunL.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:3420 -
C:\Windows\SysWOW64\chcp.comchcp 650014⤵PID:5104
-
-
C:\Windows\SysWOW64\PING.EXEping -n 10 localhost4⤵
- Runs ping.exe
PID:2408
-
-
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:952 -
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"5⤵PID:1260
-
-
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"5⤵PID:1844
-
-
C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"C:\Users\Admin\AppData\Local\Temp\7289c479c6a3839e87342411a5a49c54.exe"5⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4288
-
-
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\7289c479c6a3839e87342411a5a49c54.exe.log
Filesize507B
MD58cf94b5356be60247d331660005941ec
SHA1fdedb361f40f22cb6a086c808fc0056d4e421131
SHA25652a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0
SHA512b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
229B
MD580a7cfd5db31b0055bf84a484f5d013a
SHA1f7ff076613bdf3718c36ccb2a47bb714baba3dc9
SHA25649a19e5ea631a440544281aa59e64b2f5fd4c18e239169ab8558704edb9444bc
SHA5124f72b9e36940687ce9456b3f821a35a0118c075be6da6d46292b739fb094ea28d5e8ae479a69fba090d6a7110eee09475da72a8c6af716468811c6d3e0a9f1f5
-
Filesize
657KB
MD57289c479c6a3839e87342411a5a49c54
SHA1baf866517df277c66f2c13168b15119ba3ec3a92
SHA25622101f7ae824387a41052dfc0891096efb5ab47859727131465eeadcc1412a58
SHA51217397fe4a4d2bae32854d917ba706c37e266ab1cc1b8e9a41bb13a7ca92348aa894169388a4d5f96f1b9e31f40ee358caa07d537c9f67b94c2f3f219905eadc1