Analysis
- max time kernel
105s - max time network
152s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
02/06/2026, 11:35
Static task
static1
Behavioral task
behavioral1
Sample
tmpuxe_zxpx.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral2
Sample
tmpuxe_zxpx.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral3
Sample
tmpuxe_zxpx.exe
Resource
win11-20260513-en
General
- Target tmpuxe_zxpx.exe
- Size 4.1MB
- Sample260602-np8chsc16k
- SHA256 a3d49bb9d44da26bc5c3650be6b3663429cc7bd6e02d0483994f5c5a06949002
- MD5 2341776828b862034d3d4c9b23b40b29
- SHA1 7f7ab6d3197cfec74dccf6f352107a2685e37d60
- SHA512 8c5991c9fc17ef0b97d984c4d18d23f5821d1fccb941a3fd81b1bac12690e589984a6e5ed8cc36c38fa13da6e47d4220bc97f84d6e6a17e7ba372f6848c7a661
- SSDEEP 49152:xlBep/VOTg1p7RXKO63AZ15KC+5WvEt6b/ZuM7XJUEM/iIgO2i5KB8vKMW+BXUEW:xveFPdyQZ1oKN7MMDJw3vKh+XcPCZK
- TLSH T19A1633F1B691CC77D8AA363445679F950ABFFA40C1B814A73A3846296DE73C0613732B
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Glupteba payload 20 IoCs
resource yara_rule behavioral3/memory/596-2-0x0000000002F10000-0x0000000003786000-memory.dmp family_glupteba behavioral3/memory/596-4-0x0000000002F10000-0x0000000003786000-memory.dmp family_glupteba behavioral3/memory/596-3-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/836-11-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/720-15-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/1744-25-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-26-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/572-28-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/3300-30-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-31-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-32-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-33-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-34-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-35-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-36-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-37-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-38-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-39-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-40-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral3/memory/2168-41-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba - Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3620 netsh.exe - Executes dropped EXE 6 IoCs
pid Process 2168 csrss.exe 720 csrss.exe 1744 csrss.exe 1044 injector.exe 572 csrss.exe 3300 csrss.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-125073035-2952146151-721812867-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe Set value (str) \REGISTRY\USER\S-1-5-21-125073035-2952146151-721812867-1000\Software\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" tmpuxe_zxpx.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
flow ioc 2 raw.githubusercontent.com 8 raw.githubusercontent.com - Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
description ioc Process File opened for modification \??\WinMonFS csrss.exe - Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
description ioc Process File opened (read-only) \??\VBoxMiniRdrDN tmpuxe_zxpx.exe - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss tmpuxe_zxpx.exe File created C:\Windows\rss\csrss.exe tmpuxe_zxpx.exe - Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Microsoft\NetSh netsh.exe - System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmpuxe_zxpx.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmpuxe_zxpx.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe - Modifies data under HKEY_USERS 40 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Root csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\trust\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\CA\CRLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\Disallowed\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\TrustedPeople csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\trust\CTLs csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\CA csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Policies\Microsoft\SystemCertificates\Disallowed\Certificates csrss.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\SystemCertificates\SmartCardRoot\CRLs csrss.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 236 schtasks.exe 3964 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 596 tmpuxe_zxpx.exe 596 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 836 tmpuxe_zxpx.exe 720 csrss.exe 720 csrss.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 572 csrss.exe 572 csrss.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 2168 csrss.exe 2168 csrss.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 2168 csrss.exe 2168 csrss.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe 1044 injector.exe - Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 596 tmpuxe_zxpx.exe Token: SeImpersonatePrivilege 596 tmpuxe_zxpx.exe Token: SeDebugPrivilege 720 csrss.exe Token: SeImpersonatePrivilege 720 csrss.exe Token: SeSystemEnvironmentPrivilege 2168 csrss.exe Token: SeDebugPrivilege 572 csrss.exe Token: SeImpersonatePrivilege 572 csrss.exe - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 836 wrote to memory of 1572 836 tmpuxe_zxpx.exe 86 PID 1572 wrote to memory of 3620 1572 cmd.exe 88 PID 836 wrote to memory of 2168 836 tmpuxe_zxpx.exe 89 PID 2168 wrote to memory of 1044 2168 csrss.exe 104 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\tmpuxe_zxpx.exe"C:\Users\Admin\AppData\Local\Temp\tmpuxe_zxpx.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:596 -
C:\Users\Admin\AppData\Local\Temp\tmpuxe_zxpx.exe"C:\Users\Admin\AppData\Local\Temp\tmpuxe_zxpx.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:836 -
C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
PID:1572 -
C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
PID:3620
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe3⤵
- Executes dropped EXE
- Adds Run key to start application
- Manipulates WinMonFS driver.
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Scheduled Task/Job: Scheduled Task
PID:236
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:3016
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C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exeC:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe taskmgr.exe C:\Users\Admin\AppData\Local\Temp\csrss\injector\NtQuerySystemInformationHook.dll4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1044
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Scheduled Task/Job: Scheduled Task
PID:3964
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C:\Windows\rss\csrss.exe"C:\Windows\rss\csrss.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:720 -
C:\Windows\rss\csrss.exe"C:\Windows\rss\csrss.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1744
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:572 -
C:\Windows\rss\csrss.exe"C:\Windows\rss\csrss.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3300
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Network
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\csrss\injector\injector.exe
- Size 281KB
- SHA256 5de4e2b07a26102fe527606ce5da1d5a4b938967c9d380a3c5fe86e2e34aaaf1
- MD5 d98e33b66343e7c96158444127a117f6
- SHA1 bb716c5509a2bf345c6c1152f6e3e1452d39d50d
- SHA512 705275e4a1ba8205eb799a8cf1737bc8ba686925e52c9198a6060a7abeee65552a85b814ac494a4b975d496a63be285f19a6265550585f2fc85824c42d7efab5
- SSDEEP 3072:qbHszDaOJ8u2HHFIWr6e29kOnK7qFQ8wMii5I7kGvNjzMuszHshoY46bEydJ+dK9:SA3IlIA6e29vngqS8wMmuooh8z+8F
- TLSH T17B546C5AB2A918F8ED77823CC8525516F672B8160730D6EF03A447672F276E09D3FB21
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\rss\csrss.exe
- Size 4.1MB
- SHA256 a3d49bb9d44da26bc5c3650be6b3663429cc7bd6e02d0483994f5c5a06949002
- MD5 2341776828b862034d3d4c9b23b40b29
- SHA1 7f7ab6d3197cfec74dccf6f352107a2685e37d60
- SHA512 8c5991c9fc17ef0b97d984c4d18d23f5821d1fccb941a3fd81b1bac12690e589984a6e5ed8cc36c38fa13da6e47d4220bc97f84d6e6a17e7ba372f6848c7a661
- SSDEEP 49152:xlBep/VOTg1p7RXKO63AZ15KC+5WvEt6b/ZuM7XJUEM/iIgO2i5KB8vKMW+BXUEW:xveFPdyQZ1oKN7MMDJw3vKh+XcPCZK
- TLSH T19A1633F1B691CC77D8AA363445679F950ABFFA40C1B814A73A3846296DE73C0613732B
- MD5 SHA1 SHA512 SSDEEP TLSH