Analysis
- max time kernel
150s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
19/05/2024, 09:06
General
- Target 2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5.exe
- Size 4.1MB
- Sample240519-k2wygabe45
- SHA256 2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5
Malware Config
Signatures
- Glupteba
Glupteba is a modular loader written in Golang with various components.
- Glupteba payload 19 IoCs
- Modifies Windows Firewall 2 TTPs 1 IoCs
- Executes dropped EXE 4 IoCs
- UPX packed file 5 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.
- Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs
Using powershell.exe command.
- 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\2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5.exe"C:\Users\Admin\AppData\Local\Temp\2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5.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⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5.exe"C:\Users\Admin\AppData\Local\Temp\2ed418885d343e43dc3116263112ecbdd4fd99c55ed309c3c3c8b5a48c0745b5.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
- Command and Scripting Interpreter: PowerShell
- 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
- Command and Scripting Interpreter: PowerShell
- 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
- Command and Scripting Interpreter: PowerShell
- 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
- Command and Scripting Interpreter: PowerShell
- 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
- Command and Scripting Interpreter: PowerShell
- 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
- Command and Scripting Interpreter: PowerShell
- 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_4jvilref.lkr.ps1
injector.exe
powershell.exe.log
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
csrss.exe
windefender.exe
memory/240-92-0x00000000709F0000-0x0000000070D47000-memory.dmp
memory/240-91-0x0000000070870000-0x00000000708BC000-memory.dmp
memory/240-89-0x00000000058E0000-0x0000000005C37000-memory.dmp
memory/744-216-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/744-220-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/1632-1-0x0000000004130000-0x000000000452A000-memory.dmp
memory/1632-3-0x0000000000400000-0x0000000000D1C000-memory.dmp
memory/1632-2-0x0000000004530000-0x0000000004E1B000-memory.dmp
memory/1632-51-0x0000000000400000-0x0000000002365000-memory.dmp
memory/1632-54-0x0000000004530000-0x0000000004E1B000-memory.dmp
memory/1632-53-0x0000000000400000-0x0000000000D1C000-memory.dmp
memory/1924-40-0x00000000744F0000-0x0000000074CA1000-memory.dmp
memory/1924-20-0x0000000005AB0000-0x0000000005E07000-memory.dmp
memory/1924-37-0x0000000007B90000-0x000000000820A000-memory.dmp
memory/1924-38-0x00000000744F0000-0x0000000074CA1000-memory.dmp
memory/1924-41-0x0000000007590000-0x000000000759A000-memory.dmp
memory/1924-42-0x00000000076A0000-0x0000000007736000-memory.dmp
memory/1924-43-0x00000000075B0000-0x00000000075C1000-memory.dmp
memory/1924-44-0x0000000007600000-0x000000000760E000-memory.dmp
memory/1924-45-0x0000000007610000-0x0000000007625000-memory.dmp
memory/1924-46-0x0000000007660000-0x000000000767A000-memory.dmp
memory/1924-47-0x0000000007680000-0x0000000007688000-memory.dmp
memory/1924-50-0x00000000744F0000-0x0000000074CA1000-memory.dmp
memory/1924-36-0x0000000007420000-0x00000000074C4000-memory.dmp
memory/1924-35-0x0000000007400000-0x000000000741E000-memory.dmp
memory/1924-24-0x00000000073A0000-0x00000000073D4000-memory.dmp
memory/1924-7-0x00000000744F0000-0x0000000074CA1000-memory.dmp
memory/1924-8-0x00000000744F0000-0x0000000074CA1000-memory.dmp
memory/1924-5-0x0000000002AD0000-0x0000000002B06000-memory.dmp
memory/1924-4-0x00000000744FE000-0x00000000744FF000-memory.dmp
memory/1924-9-0x0000000005100000-0x0000000005122000-memory.dmp
memory/1924-39-0x0000000007550000-0x000000000756A000-memory.dmp
memory/1924-10-0x00000000059D0000-0x0000000005A36000-memory.dmp
memory/1924-26-0x0000000070930000-0x0000000070C87000-memory.dmp
memory/1924-25-0x0000000070760000-0x00000000707AC000-memory.dmp
memory/1924-23-0x00000000063B0000-0x00000000063F6000-memory.dmp
memory/1924-22-0x0000000006030000-0x000000000607C000-memory.dmp
memory/1924-21-0x0000000005FA0000-0x0000000005FBE000-memory.dmp
memory/1924-11-0x0000000005A40000-0x0000000005AA6000-memory.dmp
memory/1924-6-0x00000000052A0000-0x00000000058CA000-memory.dmp
memory/2028-209-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/2028-213-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/2884-64-0x0000000005E70000-0x0000000005EBC000-memory.dmp
memory/2884-60-0x00000000057F0000-0x0000000005B47000-memory.dmp
memory/2884-77-0x00000000073C0000-0x00000000073D5000-memory.dmp
memory/2884-76-0x0000000007370000-0x0000000007381000-memory.dmp
memory/2884-65-0x0000000070870000-0x00000000708BC000-memory.dmp
memory/2884-66-0x0000000070AB0000-0x0000000070E07000-memory.dmp
memory/2884-75-0x0000000006E20000-0x0000000006EC4000-memory.dmp
memory/3292-107-0x0000000005740000-0x0000000005A97000-memory.dmp
memory/3292-113-0x0000000070A70000-0x0000000070DC7000-memory.dmp
memory/3292-112-0x0000000070870000-0x00000000708BC000-memory.dmp
memory/3560-126-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-224-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-222-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-219-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-226-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-218-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-215-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-227-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-214-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-229-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-232-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-234-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-235-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4108-205-0x0000000000400000-0x0000000002365000-memory.dmp
memory/4260-139-0x0000000005E40000-0x0000000005E8C000-memory.dmp
memory/4260-152-0x0000000005C10000-0x0000000005C25000-memory.dmp
memory/4260-137-0x0000000005890000-0x0000000005BE7000-memory.dmp
memory/4260-140-0x00000000707D0000-0x000000007081C000-memory.dmp
memory/4260-141-0x0000000071110000-0x0000000071467000-memory.dmp
memory/4260-150-0x00000000070A0000-0x0000000007144000-memory.dmp
memory/4260-151-0x00000000073D0000-0x00000000073E1000-memory.dmp
memory/4324-176-0x0000000007B40000-0x0000000007B51000-memory.dmp
memory/4324-165-0x00000000706F0000-0x000000007073C000-memory.dmp
memory/4324-164-0x00000000065A0000-0x00000000065EC000-memory.dmp
memory/4324-162-0x0000000005FF0000-0x0000000006347000-memory.dmp
memory/4324-166-0x0000000070940000-0x0000000070C97000-memory.dmp
memory/4324-175-0x00000000077C0000-0x0000000007864000-memory.dmp
memory/4324-177-0x0000000006370000-0x0000000006385000-memory.dmp
memory/4408-190-0x0000000070870000-0x0000000070BC7000-memory.dmp
memory/4408-187-0x00000000058A0000-0x0000000005BF7000-memory.dmp
memory/4408-189-0x00000000706F0000-0x000000007073C000-memory.dmp