Analysis
- max time kernel
150s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240412-en - resource tags
- submitted
20/04/2024, 15:10
General
- Target b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f.exe
- Size 4.2MB
- Sample240420-sj77sabc46
- SHA256 b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f
Malware Config
Signatures
- Glupteba
Glupteba is a modular loader written in Golang with various components.
- Glupteba payload 20 IoCs
- Modifies Windows Firewall 2 TTPs 1 IoCs
- Executes dropped EXE 4 IoCs
- UPX packed file 4 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\b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f.exe"C:\Users\Admin\AppData\Local\Temp\b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f.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\b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f.exe"C:\Users\Admin\AppData\Local\Temp\b95d5d0e3f458a95241e83876331aa15888f80d93e495682ea796742d3debc3f.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
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Downloads
__PSScriptPolicyTest_rb4nwcjg.pqq.ps1
injector.exe
powershell.exe.log
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
csrss.exe
windefender.exe
memory/876-39-0x0000000007B30000-0x0000000007B4A000-memory.dmp
memory/876-5-0x0000000074A50000-0x0000000075201000-memory.dmp
memory/876-20-0x0000000006570000-0x000000000658E000-memory.dmp
memory/876-21-0x00000000065A0000-0x00000000065EC000-memory.dmp
memory/876-22-0x0000000006B20000-0x0000000006B66000-memory.dmp
memory/876-24-0x000000007FD90000-0x000000007FDA0000-memory.dmp
memory/876-23-0x00000000079A0000-0x00000000079D4000-memory.dmp
memory/876-25-0x0000000070CC0000-0x0000000070D0C000-memory.dmp
memory/876-26-0x0000000070EF0000-0x0000000071247000-memory.dmp
memory/876-36-0x00000000030A0000-0x00000000030B0000-memory.dmp
memory/876-35-0x00000000079E0000-0x00000000079FE000-memory.dmp
memory/876-37-0x0000000007A00000-0x0000000007AA4000-memory.dmp
memory/876-38-0x0000000008170000-0x00000000087EA000-memory.dmp
memory/876-4-0x00000000030F0000-0x0000000003126000-memory.dmp
memory/876-40-0x0000000007B70000-0x0000000007B7A000-memory.dmp
memory/876-41-0x0000000007C80000-0x0000000007D16000-memory.dmp
memory/876-42-0x0000000007B90000-0x0000000007BA1000-memory.dmp
memory/876-43-0x0000000007BE0000-0x0000000007BEE000-memory.dmp
memory/876-10-0x0000000005E70000-0x0000000005ED6000-memory.dmp
memory/876-45-0x0000000007C40000-0x0000000007C5A000-memory.dmp
memory/876-46-0x0000000007C60000-0x0000000007C68000-memory.dmp
memory/876-49-0x0000000074A50000-0x0000000075201000-memory.dmp
memory/876-19-0x0000000005F60000-0x00000000062B7000-memory.dmp
memory/876-6-0x00000000030A0000-0x00000000030B0000-memory.dmp
memory/876-7-0x00000000057D0000-0x0000000005DFA000-memory.dmp
memory/876-8-0x00000000056B0000-0x00000000056D2000-memory.dmp
memory/876-9-0x0000000005750000-0x00000000057B6000-memory.dmp
memory/876-44-0x0000000007BF0000-0x0000000007C05000-memory.dmp
memory/1500-194-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1500-52-0x0000000003B60000-0x0000000003F5D000-memory.dmp
memory/1500-54-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1500-129-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1500-112-0x0000000003B60000-0x0000000003F5D000-memory.dmp
memory/1636-269-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-275-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-272-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-278-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-266-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-281-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-263-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-260-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-284-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-245-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-247-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-287-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/1636-257-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/2492-116-0x0000000074AF0000-0x00000000752A1000-memory.dmp
memory/2492-117-0x00000000053D0000-0x00000000053E0000-memory.dmp
memory/2492-118-0x00000000053D0000-0x00000000053E0000-memory.dmp
memory/2492-119-0x0000000006190000-0x00000000064E7000-memory.dmp
memory/2492-130-0x0000000070DD0000-0x0000000070E1C000-memory.dmp
memory/2856-102-0x0000000070DD0000-0x0000000070E1C000-memory.dmp
memory/2856-99-0x0000000005710000-0x0000000005A67000-memory.dmp
memory/2856-115-0x0000000074AF0000-0x00000000752A1000-memory.dmp
memory/2856-90-0x0000000000BB0000-0x0000000000BC0000-memory.dmp
memory/2856-101-0x000000007EF50000-0x000000007EF60000-memory.dmp
memory/2856-89-0x0000000000BB0000-0x0000000000BC0000-memory.dmp
memory/2856-113-0x0000000000BB0000-0x0000000000BC0000-memory.dmp
memory/2856-88-0x0000000074AF0000-0x00000000752A1000-memory.dmp
memory/2856-103-0x0000000070FC0000-0x0000000071317000-memory.dmp
memory/4256-2-0x00000000041C0000-0x0000000004AAB000-memory.dmp
memory/4256-53-0x00000000041C0000-0x0000000004AAB000-memory.dmp
memory/4256-1-0x0000000003DC0000-0x00000000041B9000-memory.dmp
memory/4256-3-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/4256-50-0x0000000000400000-0x0000000001DF9000-memory.dmp
memory/4376-255-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/4636-264-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/4636-259-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/4644-55-0x0000000074AF0000-0x00000000752A1000-memory.dmp
memory/4644-81-0x00000000045A0000-0x00000000045B0000-memory.dmp
memory/4644-57-0x00000000045A0000-0x00000000045B0000-memory.dmp
memory/4644-80-0x0000000006AD0000-0x0000000006B74000-memory.dmp
memory/4644-86-0x0000000074AF0000-0x00000000752A1000-memory.dmp
memory/4644-83-0x0000000007040000-0x0000000007055000-memory.dmp
memory/4644-82-0x0000000006FF0000-0x0000000007001000-memory.dmp
memory/4644-56-0x00000000045A0000-0x00000000045B0000-memory.dmp
memory/4644-79-0x00000000045A0000-0x00000000045B0000-memory.dmp
memory/4644-70-0x0000000070FE0000-0x0000000071337000-memory.dmp
memory/4644-68-0x000000007EFA0000-0x000000007EFB0000-memory.dmp
memory/4644-69-0x0000000070DD0000-0x0000000070E1C000-memory.dmp
memory/4644-67-0x0000000006020000-0x000000000606C000-memory.dmp
memory/4644-66-0x0000000005560000-0x00000000058B7000-memory.dmp