Analysis
- max time kernel
149s - max time network
154s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
21/08/2026, 15:55
General
- Target dingding.exe
- Size 17.0MB
- Sample260821-tcwe3sshne
- SHA256 5acbb6ee89b38eb2abf81a2b2349a4c97e7c2dd23ad4daf8d5b5b113176fef53
Malware Config
Signatures
- Executes dropped EXE 7 IoCs
- Loads dropped DLL 2 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- UPX packed file 11 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Modifies registry class 17 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\dingding.exe"C:\Users\Admin\AppData\Local\Temp\dingding.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\1870000.exe"C:\Users\Admin\AppData\Local\Temp\1870000.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\my5rt4ju.exe"C:\Users\Admin\AppData\Local\Temp\my5rt4ju.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
-
-
C:\Windows\SysWOW64\explorer.exe"C:\Windows\System32\explorer.exe" shell:::{37CBEC86-5779-82AF-2F30-B3AE04D124B3}3⤵
- System Location Discovery: System Language Discovery
-
-
-
C:\Users\Admin\AppData\Local\Temp\1dingtalk_downloader.exe"C:\Users\Admin\AppData\Local\Temp\1dingtalk_downloader.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\8.5.0-Release.260817002.exe"C:\Users\Admin\AppData\Local\Temp\8.5.0-Release.260817002.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
-
-
-
C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\explorer.exe"explorer.exe" "C:\Users\Admin\AppData\Local\Temp\aadrt.dll"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\k4KBA.exe"C:\Users\Admin\AppData\Local\Temp\k4KBA.exe"1⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
-
C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
-
C:\Users\Admin\AppData\Local\Temp\my5rt4ju.exeC:\Users\Admin\AppData\Local\Temp\my5rt4ju.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
-
C:\Users\Admin\AppData\Local\Temp\Hm90U057.exe"C:\Users\Admin\AppData\Local\Temp\Hm90U057.exe"1⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
1870000.exe
1dingtalk_downloader.exe
CrashReporter.dll
k4KBA.exe
my5rt4ju.exe
regsetup.txt
regsetup.txt
config.json
config.json.tmp
memory/2592-62-0x00000231F37F0000-0x00000231F3E52000-memory.dmp
memory/2592-70-0x00000231F4B40000-0x00000231F51A2000-memory.dmp
memory/4784-75-0x000002A586860000-0x000002A586EC2000-memory.dmp
memory/4784-81-0x000002A586860000-0x000002A586EC2000-memory.dmp
memory/4988-79-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-63-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-50-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-30-0x0000000000F40000-0x0000000000F41000-memory.dmp
memory/4988-21-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-80-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-59-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-60-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-84-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-85-0x0000000000F40000-0x0000000000F41000-memory.dmp
memory/4988-97-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/4988-107-0x0000000000F60000-0x00000000016E8000-memory.dmp
memory/5904-0-0x0000000000400000-0x000000000047D000-memory.dmp