Analysis
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max time kernel
147s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20-05-2024 01:46
Static task
static1
Behavioral task
behavioral1
Sample
ELTIMASerialSplitter/ssplitinst.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
ELTIMASerialSplitter/ssplitinst.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral3
Sample
ELTIMASerialSplitter/下载说明.htm
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
ELTIMASerialSplitter/下载说明.htm
Resource
win10v2004-20240508-en
Behavioral task
behavioral5
Sample
ELTIMASerialSplitter/使用帮助(河东软件园).url
Resource
win7-20240508-en
Behavioral task
behavioral6
Sample
ELTIMASerialSplitter/使用帮助(河东软件园).url
Resource
win10v2004-20240426-en
General
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Target
ELTIMASerialSplitter/ssplitinst.exe
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Size
6.4MB
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MD5
21f124a12e8ea4e537ac519792be7eb0
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SHA1
6522ddb1872be1e63eb1b97a65a4d556720c0922
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SHA256
7c8aae4560527acaecdc848949f639c9ce086e335659839e84d48abb9bb6dac6
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SHA512
857e3a0a12b2dab0900a2a48b5ab53b76c4c8237f682f6837cd71a9991e0a4261812bc76f69d21b655cc0a311eacdd2a2466aec57f21ec4a5a92c52feda0636f
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SSDEEP
98304:AqYz9oGhVYAGKmL2LxJl8soC0OAax9M6oZFVIL5qIL/lL2Z4+AVW1DXEDQfB:AqYzthVcgfasoC0ix/oZFs/NQ4pMlXzB
Malware Config
Extracted
sality
http://89.119.67.154/testo5/
http://kukutrustnet777.info/home.gif
http://kukutrustnet888.info/home.gif
http://kukutrustnet987.info/home.gif
http://www.klkjwre9fqwieluoi.info/
http://kukutrustnet777888.info/
Signatures
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Modifies firewall policy service 2 TTPs 3 IoCs
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "1" ssplitinst.exe -
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ssplitinst.exe -
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" ssplitinst.exe -
Executes dropped EXE 1 IoCs
Processes:
ssplitinst.tmppid process 2892 ssplitinst.tmp -
Processes:
resource yara_rule behavioral2/memory/4592-7-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-1-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-8-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-16-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-15-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-21-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-14-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-24-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-11-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-27-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-28-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-29-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-30-0x0000000002380000-0x000000000340E000-memory.dmp upx behavioral2/memory/4592-31-0x0000000002380000-0x000000000340E000-memory.dmp upx -
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UacDisableNotify = "1" ssplitinst.exe Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\Svc ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" ssplitinst.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" ssplitinst.exe -
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ssplitinst.exe -
Drops file in Windows directory 1 IoCs
Processes:
ssplitinst.exedescription ioc process File opened for modification C:\Windows\SYSTEM.INI ssplitinst.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
ssplitinst.exepid process 4592 ssplitinst.exe 4592 ssplitinst.exe 4592 ssplitinst.exe 4592 ssplitinst.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
ssplitinst.exedescription pid process Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe Token: SeDebugPrivilege 4592 ssplitinst.exe -
Suspicious use of WriteProcessMemory 35 IoCs
Processes:
ssplitinst.exedescription pid process target process PID 4592 wrote to memory of 772 4592 ssplitinst.exe fontdrvhost.exe PID 4592 wrote to memory of 780 4592 ssplitinst.exe fontdrvhost.exe PID 4592 wrote to memory of 60 4592 ssplitinst.exe dwm.exe PID 4592 wrote to memory of 2520 4592 ssplitinst.exe sihost.exe PID 4592 wrote to memory of 2560 4592 ssplitinst.exe svchost.exe PID 4592 wrote to memory of 2668 4592 ssplitinst.exe taskhostw.exe PID 4592 wrote to memory of 3488 4592 ssplitinst.exe Explorer.EXE PID 4592 wrote to memory of 3692 4592 ssplitinst.exe svchost.exe PID 4592 wrote to memory of 3892 4592 ssplitinst.exe DllHost.exe PID 4592 wrote to memory of 3984 4592 ssplitinst.exe StartMenuExperienceHost.exe PID 4592 wrote to memory of 4052 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 764 4592 ssplitinst.exe SearchApp.exe PID 4592 wrote to memory of 3048 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 4092 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 4520 4592 ssplitinst.exe TextInputHost.exe PID 4592 wrote to memory of 4664 4592 ssplitinst.exe backgroundTaskHost.exe PID 4592 wrote to memory of 5108 4592 ssplitinst.exe backgroundTaskHost.exe PID 4592 wrote to memory of 2892 4592 ssplitinst.exe ssplitinst.tmp PID 4592 wrote to memory of 2892 4592 ssplitinst.exe ssplitinst.tmp PID 4592 wrote to memory of 2892 4592 ssplitinst.exe ssplitinst.tmp PID 4592 wrote to memory of 772 4592 ssplitinst.exe fontdrvhost.exe PID 4592 wrote to memory of 780 4592 ssplitinst.exe fontdrvhost.exe PID 4592 wrote to memory of 60 4592 ssplitinst.exe dwm.exe PID 4592 wrote to memory of 2520 4592 ssplitinst.exe sihost.exe PID 4592 wrote to memory of 2560 4592 ssplitinst.exe svchost.exe PID 4592 wrote to memory of 2668 4592 ssplitinst.exe taskhostw.exe PID 4592 wrote to memory of 3488 4592 ssplitinst.exe Explorer.EXE PID 4592 wrote to memory of 3692 4592 ssplitinst.exe svchost.exe PID 4592 wrote to memory of 3892 4592 ssplitinst.exe DllHost.exe PID 4592 wrote to memory of 3984 4592 ssplitinst.exe StartMenuExperienceHost.exe PID 4592 wrote to memory of 4052 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 764 4592 ssplitinst.exe SearchApp.exe PID 4592 wrote to memory of 3048 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 4092 4592 ssplitinst.exe RuntimeBroker.exe PID 4592 wrote to memory of 4520 4592 ssplitinst.exe TextInputHost.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
ssplitinst.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ssplitinst.exe
Processes
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\fontdrvhost.exe"fontdrvhost.exe"1⤵
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C:\Windows\system32\dwm.exe"dwm.exe"1⤵
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc1⤵
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C:\Windows\system32\taskhostw.exetaskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}1⤵
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
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C:\Users\Admin\AppData\Local\Temp\ELTIMASerialSplitter\ssplitinst.exe"C:\Users\Admin\AppData\Local\Temp\ELTIMASerialSplitter\ssplitinst.exe"2⤵
- Modifies firewall policy service
- UAC bypass
- Windows security bypass
- Windows security modification
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
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C:\Users\Admin\AppData\Local\Temp\is-APH09.tmp\ssplitinst.tmp"C:\Users\Admin\AppData\Local\Temp\is-APH09.tmp\ssplitinst.tmp" /SL5="$601D4,6159599,141824,C:\Users\Admin\AppData\Local\Temp\ELTIMASerialSplitter\ssplitinst.exe"3⤵
- Executes dropped EXE
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc1⤵
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C:\Windows\system32\DllHost.exeC:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\System32\RuntimeBroker.exeC:\Windows\System32\RuntimeBroker.exe -Embedding1⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca1⤵
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C:\Windows\system32\backgroundTaskHost.exe"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca1⤵
Network
MITRE ATT&CK Matrix ATT&CK v13
Privilege Escalation
Create or Modify System Process
1Windows Service
1Abuse Elevation Control Mechanism
1Bypass User Account Control
1Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-APH09.tmp\ssplitinst.tmpFilesize
1.1MB
MD5206a0d523af8ed8537a37eb2ae9d998e
SHA1321fcc8cfe84ba5fabbe4f4ea078f2714c3e8644
SHA256fe3269a1a58f5675821af03cd8fa868b5d80ba28c1b5dfcc9d7365d5ffd7c49c
SHA5125841949fb1d44c9f21e5297adf30671240fbde6fa2bbc7addf32d2adf97a3fa64df259d82d5b793ba65f45caacede94bf24e769fbc81124fc29c438e5000a3a7
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memory/2892-33-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/2892-25-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4592-12-0x00000000004F0000-0x00000000004F2000-memory.dmpFilesize
8KB
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memory/4592-17-0x00000000004F0000-0x00000000004F2000-memory.dmpFilesize
8KB
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memory/4592-13-0x0000000000680000-0x0000000000681000-memory.dmpFilesize
4KB
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memory/4592-0-0x0000000000400000-0x0000000000440000-memory.dmpFilesize
256KB
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memory/4592-16-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-19-0x0000000000401000-0x0000000000416000-memory.dmpFilesize
84KB
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memory/4592-1-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-15-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-21-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-7-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-18-0x00000000004F0000-0x00000000004F2000-memory.dmpFilesize
8KB
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memory/4592-8-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-14-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-24-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-11-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-27-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-28-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-29-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-30-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-31-0x0000000002380000-0x000000000340E000-memory.dmpFilesize
16.6MB
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memory/4592-4-0x0000000000400000-0x0000000000440000-memory.dmpFilesize
256KB
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memory/4592-40-0x00000000004F0000-0x00000000004F2000-memory.dmpFilesize
8KB
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memory/4592-49-0x0000000000400000-0x0000000000440000-memory.dmpFilesize
256KB