Analysis
- max time kernel
150s - max time network
149s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows - submitted
02/06/2026, 11:15
Static task
static1
Behavioral task
behavioral1
Sample
tmpmvx2mpfs.exe
Resource
win10ltsc2021-20260513-en
Behavioral task
behavioral2
Sample
tmpmvx2mpfs.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral3
Sample
tmpmvx2mpfs.exe
Resource
win11-20260513-en
General
- Target tmpmvx2mpfs.exe
- Size 4.1MB
- Sample260602-ncwsyscx9q
- SHA256 7b54e3fbfeb7238f60e3d1d2649aed347f28a77dabcfee0811eee6608e659fbb
- MD5 1ecc5a0d190104170a61f455054313e5
- SHA1 342f6baa5798c47f6e47d356f3d0072573ae0272
- SHA512 b29cd31b174f69adacc958cf2708bcf77ace0f784e3a84e6be1bf5ccef4d293b1fc56f257b91174b5086cfdc92ad2057f12654f8237ea28f09f431a31db9cf0c
- SSDEEP 98304:DGr5XsjgbzzDKUVPIRAXxDH5ubxbg//6aKXIPUYM15t9WAYxcCC:irNsWzpNIkxDH5YM/SaK0w5DYJC
- TLSH T137163371B499D8FAE99324719026D6E01779E6322330944F37010F299BB779C5AFA32F
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Glupteba payload 22 IoCs
resource yara_rule behavioral1/memory/5212-2-0x0000000002E70000-0x00000000036E6000-memory.dmp family_glupteba behavioral1/memory/5212-4-0x0000000002E70000-0x00000000036E6000-memory.dmp family_glupteba behavioral1/memory/5212-3-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/6108-11-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/4336-15-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/5252-25-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/5512-27-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-28-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/2596-30-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-31-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-32-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-33-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-34-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-35-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-36-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-37-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-38-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-39-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-40-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-41-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-42-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba behavioral1/memory/3848-43-0x0000000000400000-0x0000000000C91000-memory.dmp family_glupteba - Windows security bypass 2 TTPs 7 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\tmpmvx2mpfs.exe = "0" tmpmvx2mpfs.exe - Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2024 netsh.exe - Executes dropped EXE 6 IoCs
pid Process 3848 csrss.exe 4336 csrss.exe 5252 csrss.exe 5512 csrss.exe 1904 injector.exe 2596 csrss.exe - Windows security modification 2 TTPs 7 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\rss = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\csrss = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\windefender.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\System32\drivers = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\csrss.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\windefender.exe = "0" tmpmvx2mpfs.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Processes\tmpmvx2mpfs.exe = "0" tmpmvx2mpfs.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-101591186-421676486-4137282292-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" tmpmvx2mpfs.exe Set value (str) \REGISTRY\USER\S-1-5-21-101591186-421676486-4137282292-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\csrss = "\"C:\\Windows\\rss\\csrss.exe\"" csrss.exe - Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- 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 tmpmvx2mpfs.exe - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\rss tmpmvx2mpfs.exe File created C:\Windows\rss\csrss.exe tmpmvx2mpfs.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 - Program crash 4 IoCs
pid pid_target Process procid_target 5848 4336 WerFault.exe 92 2656 5252 WerFault.exe 93 5900 5512 WerFault.exe 108 2100 2596 WerFault.exe 113 - 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 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 tmpmvx2mpfs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language tmpmvx2mpfs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrss.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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 1088 schtasks.exe 4440 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 5212 tmpmvx2mpfs.exe 5212 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 6108 tmpmvx2mpfs.exe 4336 csrss.exe 4336 csrss.exe 1904 injector.exe 1904 injector.exe 5512 csrss.exe 5512 csrss.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 3848 csrss.exe 3848 csrss.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 3848 csrss.exe 3848 csrss.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe 1904 injector.exe - Suspicious use of AdjustPrivilegeToken 7 IoCs
description pid Process Token: SeDebugPrivilege 5212 tmpmvx2mpfs.exe Token: SeImpersonatePrivilege 5212 tmpmvx2mpfs.exe Token: SeDebugPrivilege 4336 csrss.exe Token: SeImpersonatePrivilege 4336 csrss.exe Token: SeSystemEnvironmentPrivilege 3848 csrss.exe Token: SeDebugPrivilege 5512 csrss.exe Token: SeImpersonatePrivilege 5512 csrss.exe - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 6108 wrote to memory of 4052 6108 tmpmvx2mpfs.exe 87 PID 4052 wrote to memory of 2024 4052 cmd.exe 89 PID 6108 wrote to memory of 3848 6108 tmpmvx2mpfs.exe 90 PID 3848 wrote to memory of 1904 3848 csrss.exe 109 - 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\tmpmvx2mpfs.exe"C:\Users\Admin\AppData\Local\Temp\tmpmvx2mpfs.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5212 -
C:\Users\Admin\AppData\Local\Temp\tmpmvx2mpfs.exe"C:\Users\Admin\AppData\Local\Temp\tmpmvx2mpfs.exe"2⤵
- Windows security bypass
- Windows security modification
- 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:6108 -
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:4052 -
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:2024
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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
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3848 -
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:4440
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵PID:1768
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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:1904
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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:1088
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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:4336 -
C:\Windows\rss\csrss.exe"C:\Windows\rss\csrss.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5252 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5252 -s 8363⤵
- Program crash
PID:2656
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4336 -s 8282⤵
- Program crash
PID:5848
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4336 -ip 43361⤵PID:5764
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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:5512 -
C:\Windows\rss\csrss.exe"C:\Windows\rss\csrss.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2596 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2596 -s 8203⤵
- Program crash
PID:2100
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5512 -s 8242⤵
- Program crash
PID:5900
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 5252 -ip 52521⤵PID:5620
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5512 -ip 55121⤵PID:4860
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2596 -ip 25961⤵PID:1648
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
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
3Replay 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 7b54e3fbfeb7238f60e3d1d2649aed347f28a77dabcfee0811eee6608e659fbb
- MD5 1ecc5a0d190104170a61f455054313e5
- SHA1 342f6baa5798c47f6e47d356f3d0072573ae0272
- SHA512 b29cd31b174f69adacc958cf2708bcf77ace0f784e3a84e6be1bf5ccef4d293b1fc56f257b91174b5086cfdc92ad2057f12654f8237ea28f09f431a31db9cf0c
- SSDEEP 98304:DGr5XsjgbzzDKUVPIRAXxDH5ubxbg//6aKXIPUYM15t9WAYxcCC:irNsWzpNIkxDH5YM/SaK0w5DYJC
- TLSH T137163371B499D8FAE99324719026D6E01779E6322330944F37010F299BB779C5AFA32F
- MD5 SHA1 SHA512 SSDEEP TLSH