Description
Ymir detects the WoW process and captures the network connection successfully, but it fails to read the required data from the WoW process memory.
It then reports that no decryption key is available and terminates after receiving an invalid opcode.
Client and environment
- WoW branch: Retail
- WoW build: 12.1.0.69497
- Ymir build: Retail 12.1.0.69497
- Npcap version: 1.88
- Operating system: Windows 64-bit
- Locale: zhCN
Error output
Automatically selected process: Wow
New connection (0): 47.99.47.59:3724
Detected locale:
Writing dump to dumps/dump_12.1.0.69497_2026-08-28_09-46-45.pkt
Memory::ReadBytes: NtReadVirtualMemory returned: c0000005
System.ArgumentNullException:
ArgumentNull_Generic Arg_ParamName_Name, array
System.ArgumentNullException:
ArgumentNull_Generic Arg_ParamName_Name, key
Dont have a key to use for decrypt, terminating.
Dont have a key to use for decrypt, terminating.
Received packet with opcode 0x7C8FEF0F and size 7266
- likely invalid, terminating.
Unhandled exception.
System.ArgumentException: MissingProcess
Description
Ymir detects the WoW process and captures the network connection successfully, but it fails to read the required data from the WoW process memory.
It then reports that no decryption key is available and terminates after receiving an invalid opcode.
Client and environment
Error output