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bdupdate.exe

The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is set to automatically start when a user logs into Windows via the current user run registry key under the display name ‘bdupdate’. The file has been seen being downloaded from down.meiheitou.com.
MD5:
79128a8f977536a2dcb4ecef47b3de48

SHA-1:
6e24dd1e07e6981c85065ba5c07aa12733c12d3b

SHA-256:
4d33d5a04f24c70d3af95e0b55841e079f5ae06506fc56d0b6b168fd7019b4df

Scanner detections:
4 / 68

Status:
Inconclusive  (not enough data for an accurate detection)

Analysis date:
1/12/2025 10:57:11 PM UTC  (today)

Scan engine
Detection
Engine version

NANO AntiVirus
Trojan.Win32.Rogue.ctojyu
0.28.0.60577

Norman
Malware
11.20140712

Trend Micro House Call
Suspicious_GEN.F47V0623
7.2.193

Vba32 AntiVirus
Signed-Adware.Hao123.BaiduBeijingCo
3.12.26.3

File size:
1.2 MB (1,227,320 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\Program Files\tools\bdupdate.exe

File PE Metadata
Compilation timestamp:
4/10/2010 8:19:31 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
24576:xmJsYqzBn8EvbOSxH0lu//D5yVaQDxLdaBxv0zqFgvA:xWqz//D//QVaQdLKxvR7

Entry address:
0x354B

Entry point:
81, EC, D4, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, ED, 5E, 89, 6C, 24, 18, C7, 44, 24, 10, D8, 84, 40, 00, 89, 6C, 24, 14, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B8, 80, 40, 00, 55, FF, 15, B0, 82, 40, 00, 6A, 08, A3, 98, 06, 47, 00, E8, 67, 27, 00, 00, 55, 68, B4, 02, 00, 00, A3, B0, 05, 47, 00, 8D, 44, 24, 38, 50, 55, 68, 1C, 86, 40, 00, FF, 15, 80, 81, 40, 00, 68, 04, 86, 40, 00, 68, A0, 85, 46, 00, E8, 35, 26, 00, 00, FF, 15, B4, 80, 40, 00, 50, BF, A0, 10, 4C, 00, 57, E8, 23, 26, 00, 00...
 
[+]

Entropy:
7.9841

Packer / compiler:
Nullsoft install system v2.x

Code size:
25 KB (25,600 bytes)

Startup File (User Run)
Registry location:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Name:
bdupdate

Command:
C:\Program Files\tools\bdupdate.exe \rsc


The file bdupdate.exe has been seen being distributed by the following URL.

http://down.meiheitou.com/.../QvodSetup.exe

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