Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
26/04/2024, 20:56
General
- Target 64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d.exe
- Size 4.2MB
- Sample240426-zrdfpsch7v
- SHA256 64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d
Malware Config
Signatures
- Glupteba
Glupteba is a modular loader written in Golang with various components.
- Glupteba payload 18 IoCs
- Modifies Windows Firewall 2 TTPs 1 IoCs
- Executes dropped EXE 4 IoCs
- UPX packed file 6 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 2 IoCs
- 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.
- Drops file in System32 directory 7 IoCs
- 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.
- Drops file in Windows directory 4 IoCs
- Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies data under HKEY_USERS 64 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 12 IoCs
- Suspicious use of WriteProcessMemory 36 IoCs
- 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\64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d.exe"C:\Users\Admin\AppData\Local\Temp\64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d.exe"C:\Users\Admin\AppData\Local\Temp\64749877e586cb8787a9dc136a6cacb5fc9ab71a85aa55a81d0362dd7dbbf40d.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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
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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
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile3⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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.
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /delete /tn ScheduledUpdate /f4⤵
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -nologo -noprofile4⤵
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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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
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\windefender.exe"C:\Windows\windefender.exe"4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.execmd.exe /C sc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)5⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\sc.exesc sdset WinDefender D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPLOCRSDRCWDWO;;;BA)(D;;WPDT;;;BA)(A;;CCLCSWLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)S:(AU;FA;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;WD)6⤵
- Launches sc.exe
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\windefender.exeC:\Windows\windefender.exe1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
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
1Privilege Escalation
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
__PSScriptPolicyTest_nrfev502.mi4.ps1
injector.exe
powershell.exe.log
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
csrss.exe
windefender.exe
memory/1368-84-0x0000000070950000-0x000000007099C000-memory.dmp
memory/1368-85-0x0000000070BC0000-0x0000000070F17000-memory.dmp
memory/1368-76-0x0000000005710000-0x0000000005A67000-memory.dmp
memory/1812-106-0x0000000070BA0000-0x0000000070EF7000-memory.dmp
memory/1812-105-0x0000000070950000-0x000000007099C000-memory.dmp
memory/1812-95-0x0000000005EA0000-0x00000000061F7000-memory.dmp
memory/1852-188-0x0000000000400000-0x000000000441C000-memory.dmp
memory/2116-179-0x0000000070A20000-0x0000000070D77000-memory.dmp
memory/2116-176-0x0000000005810000-0x0000000005B67000-memory.dmp
memory/2116-178-0x0000000070870000-0x00000000708BC000-memory.dmp
memory/2824-6-0x0000000004A80000-0x0000000004A90000-memory.dmp
memory/2824-5-0x00000000746E0000-0x0000000074E91000-memory.dmp
memory/2824-25-0x0000000070950000-0x000000007099C000-memory.dmp
memory/2824-41-0x00000000073C0000-0x00000000073D1000-memory.dmp
memory/2824-40-0x00000000074A0000-0x0000000007536000-memory.dmp
memory/2824-24-0x00000000071B0000-0x00000000071E4000-memory.dmp
memory/2824-42-0x0000000007400000-0x000000000740E000-memory.dmp
memory/2824-43-0x0000000007410000-0x0000000007425000-memory.dmp
memory/2824-44-0x0000000007460000-0x000000000747A000-memory.dmp
memory/2824-45-0x0000000007480000-0x0000000007488000-memory.dmp
memory/2824-47-0x00000000746E0000-0x0000000074E91000-memory.dmp
memory/2824-4-0x00000000028D0000-0x0000000002906000-memory.dmp
memory/2824-38-0x0000000007350000-0x000000000736A000-memory.dmp
memory/2824-7-0x0000000004A80000-0x0000000004A90000-memory.dmp
memory/2824-39-0x0000000007390000-0x000000000739A000-memory.dmp
memory/2824-9-0x0000000004F10000-0x0000000004F32000-memory.dmp
memory/2824-11-0x0000000005850000-0x00000000058B6000-memory.dmp
memory/2824-36-0x0000000007230000-0x00000000072D4000-memory.dmp
memory/2824-35-0x0000000007210000-0x000000000722E000-memory.dmp
memory/2824-23-0x0000000006320000-0x0000000006366000-memory.dmp
memory/2824-22-0x0000000005DE0000-0x0000000005E2C000-memory.dmp
memory/2824-21-0x0000000005DC0000-0x0000000005DDE000-memory.dmp
memory/2824-37-0x00000000079A0000-0x000000000801A000-memory.dmp
memory/2824-26-0x0000000070AD0000-0x0000000070E27000-memory.dmp
memory/2824-8-0x00000000050C0000-0x00000000056EA000-memory.dmp
memory/2824-20-0x00000000058C0000-0x0000000005C17000-memory.dmp
memory/2824-10-0x00000000057E0000-0x0000000005846000-memory.dmp
memory/2856-153-0x0000000006360000-0x00000000063AC000-memory.dmp
memory/2856-164-0x0000000007590000-0x0000000007634000-memory.dmp
memory/2856-166-0x0000000006110000-0x0000000006125000-memory.dmp
memory/2856-155-0x0000000070AC0000-0x0000000070E17000-memory.dmp
memory/2856-154-0x0000000070870000-0x00000000708BC000-memory.dmp
memory/2856-143-0x0000000005D60000-0x00000000060B7000-memory.dmp
memory/2856-165-0x00000000078B0000-0x00000000078C1000-memory.dmp
memory/2988-206-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/2988-211-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/2988-221-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/3596-126-0x0000000006300000-0x0000000006657000-memory.dmp
memory/3596-131-0x0000000070950000-0x000000007099C000-memory.dmp
memory/3596-132-0x0000000070B60000-0x0000000070EB7000-memory.dmp
memory/3772-195-0x00000000047F0000-0x0000000004BF7000-memory.dmp
memory/3772-142-0x0000000000400000-0x000000000441C000-memory.dmp
memory/3772-196-0x00000000065A0000-0x0000000006E8B000-memory.dmp
memory/3772-2-0x00000000065A0000-0x0000000006E8B000-memory.dmp
memory/3772-1-0x00000000047F0000-0x0000000004BF7000-memory.dmp
memory/3772-3-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-198-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-224-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-253-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-248-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-244-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-241-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-237-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-209-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-233-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-213-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-216-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-228-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4172-220-0x0000000000400000-0x000000000441C000-memory.dmp
memory/4816-207-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/4816-203-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/4904-57-0x0000000005960000-0x0000000005CB7000-memory.dmp
memory/4904-59-0x0000000070B80000-0x0000000070ED7000-memory.dmp
memory/4904-70-0x0000000007510000-0x0000000007525000-memory.dmp
memory/4904-68-0x0000000006F90000-0x0000000007034000-memory.dmp
memory/4904-58-0x0000000070950000-0x000000007099C000-memory.dmp
memory/4904-69-0x00000000074C0000-0x00000000074D1000-memory.dmp