Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240412-en - resource tags
- submitted
17/04/2024, 12:44
General
- Target ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94.exe
- Size 4.2MB
- Sample240417-pyyp4sff37
- SHA256 ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94
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 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\ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94.exe"C:\Users\Admin\AppData\Local\Temp\ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94.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\ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94.exe"C:\Users\Admin\AppData\Local\Temp\ceb3ad624e5a87f4844a7437f11bb222705ec459cc88037721a5d85738d6ca94.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
- 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_s4xpn2iz.4ye.ps1
injector.exe
powershell.exe.log
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
StartupProfileData-Interactive
csrss.exe
windefender.exe
memory/396-257-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/396-265-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/428-38-0x0000000004B00000-0x0000000004B10000-memory.dmp
memory/428-46-0x0000000007690000-0x00000000076AA000-memory.dmp
memory/428-36-0x0000000007290000-0x00000000072AE000-memory.dmp
memory/428-27-0x0000000070B30000-0x0000000070E87000-memory.dmp
memory/428-23-0x00000000062E0000-0x0000000006326000-memory.dmp
memory/428-37-0x00000000072B0000-0x0000000007354000-memory.dmp
memory/428-25-0x0000000007250000-0x0000000007284000-memory.dmp
memory/428-40-0x00000000073D0000-0x00000000073EA000-memory.dmp
memory/428-41-0x0000000007410000-0x000000000741A000-memory.dmp
memory/428-39-0x0000000007A10000-0x000000000808A000-memory.dmp
memory/428-42-0x00000000074D0000-0x0000000007566000-memory.dmp
memory/428-43-0x0000000007440000-0x0000000007451000-memory.dmp
memory/428-24-0x000000007FA60000-0x000000007FA70000-memory.dmp
memory/428-44-0x0000000007480000-0x000000000748E000-memory.dmp
memory/428-45-0x0000000007490000-0x00000000074A5000-memory.dmp
memory/428-21-0x0000000005E20000-0x0000000005E3E000-memory.dmp
memory/428-47-0x0000000007670000-0x0000000007678000-memory.dmp
memory/428-50-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/428-5-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/428-4-0x0000000002950000-0x0000000002986000-memory.dmp
memory/428-7-0x0000000004B00000-0x0000000004B10000-memory.dmp
memory/428-8-0x0000000005140000-0x000000000576A000-memory.dmp
memory/428-6-0x0000000004B00000-0x0000000004B10000-memory.dmp
memory/428-26-0x0000000070920000-0x000000007096C000-memory.dmp
memory/428-9-0x0000000004F60000-0x0000000004F82000-memory.dmp
memory/428-11-0x0000000005770000-0x00000000057D6000-memory.dmp
memory/428-20-0x0000000005900000-0x0000000005C57000-memory.dmp
memory/428-22-0x0000000006290000-0x00000000062DC000-memory.dmp
memory/428-10-0x0000000005000000-0x0000000005066000-memory.dmp
memory/572-88-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
memory/572-98-0x0000000005B00000-0x0000000005E57000-memory.dmp
memory/572-114-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/572-101-0x0000000070920000-0x000000007096C000-memory.dmp
memory/572-100-0x000000007F820000-0x000000007F830000-memory.dmp
memory/572-102-0x0000000070AA0000-0x0000000070DF7000-memory.dmp
memory/572-112-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
memory/572-111-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
memory/572-87-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/572-89-0x0000000004BE0000-0x0000000004BF0000-memory.dmp
memory/1380-252-0x0000000000400000-0x00000000008DF000-memory.dmp
memory/2052-244-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-279-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-283-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-275-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-271-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-259-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-267-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-263-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-255-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-287-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-291-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-295-0x0000000000400000-0x000000000310D000-memory.dmp
memory/2052-299-0x0000000000400000-0x000000000310D000-memory.dmp
memory/3136-78-0x0000000003330000-0x0000000003340000-memory.dmp
memory/3136-81-0x0000000007D50000-0x0000000007D61000-memory.dmp
memory/3136-69-0x0000000070B30000-0x0000000070E87000-memory.dmp
memory/3136-80-0x0000000003330000-0x0000000003340000-memory.dmp
memory/3136-79-0x0000000007A20000-0x0000000007AC4000-memory.dmp
memory/3136-65-0x0000000003330000-0x0000000003340000-memory.dmp
memory/3136-68-0x0000000070920000-0x000000007096C000-memory.dmp
memory/3136-66-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/3136-85-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/3136-82-0x0000000007DA0000-0x0000000007DB5000-memory.dmp
memory/3136-64-0x0000000003330000-0x0000000003340000-memory.dmp
memory/3868-209-0x0000000000400000-0x000000000310D000-memory.dmp
memory/3868-62-0x0000000000400000-0x000000000310D000-memory.dmp
memory/3868-116-0x0000000004EA0000-0x00000000052A3000-memory.dmp
memory/3868-52-0x0000000004EA0000-0x00000000052A3000-memory.dmp
memory/4612-115-0x00000000746B0000-0x0000000074E61000-memory.dmp
memory/4612-117-0x0000000005B80000-0x0000000005ED7000-memory.dmp
memory/4612-119-0x0000000002C20000-0x0000000002C30000-memory.dmp
memory/4612-118-0x0000000002C20000-0x0000000002C30000-memory.dmp
memory/4612-129-0x0000000070920000-0x000000007096C000-memory.dmp
memory/4860-67-0x0000000000400000-0x000000000310D000-memory.dmp
memory/4860-63-0x0000000005360000-0x0000000005C4B000-memory.dmp
memory/4860-53-0x0000000004F60000-0x0000000005359000-memory.dmp
memory/4860-3-0x0000000000400000-0x000000000310D000-memory.dmp
memory/4860-2-0x0000000005360000-0x0000000005C4B000-memory.dmp
memory/4860-1-0x0000000004F60000-0x0000000005359000-memory.dmp