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r4a3bdfb2.exe

Ding Ruan

The application r4a3bdfb2.exe by Ding Ruan has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from dgkytklfjrqkb.cloudfront.net.
Publisher:
Ding Ruan  (signed and verified)

MD5:
6bbb1710a2a4c142c81d0a281dda26ea

SHA-1:
ac338fb53a6bdd2dbae01c6ba9769abdc2eb2af4

SHA-256:
7f11b5aeb936455493ae6c14bc42befbd77396ab6a866d3df48a0ecdc0320e8f

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/16/2025 4:54:04 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ELEX (M)
16.12.10.6

File size:
406.9 KB (416,680 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\r4a3bdfb2.exe

Digital Signature
Signed by:
Ding Ruan

Authority:
thawte, Inc.

Valid from:
11/27/2016 10:00:00 PM

Valid to:
4/13/2017 8:59:59 PM

Subject:
CN=Ding Ruan, OU=Individual Developer, O=No Organization Affiliation, L=Beijing, S=Beijing, C=CN

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
2338186762931B78D05AE2D72C1455CC

File PE Metadata
Compilation timestamp:
11/22/2016 11:53:55 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x66C2

Entry point:
E8, 1B, C6, FF, FF, E9, EE, 56, 00, 00, 6A, 10, 68, 90, 1E, 46, 00, E8, C8, 59, 00, 00, 33, FF, 89, 7D, E4, 6A, 01, E8, 9D, E0, FF, FF, 59, 21, 7D, FC, 6A, 03, 5E, 89, 75, E0, 3B, 35, A4, 9E, 46, 00, 7D, 53, A1, A0, 9E, 46, 00, 8B, 04, B0, 85, C0, 74, 44, F6, 40, 0C, 83, 74, 10, 50, E8, 11, 20, 00, 00, 59, 83, F8, FF, 74, 04, 47, 89, 7D, E4, 83, FE, 14, 7C, 29, A1, A0, 9E, 46, 00, 8B, 04, B0, 83, C0, 20, 50, FF, 15, A8, C0, 45, 00, A1, A0, 9E, 46, 00, FF, 34, B0, E8, 70, B9, FF, FF, 59, A1, A0, 9E, 46, 00...
 
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Code size:
361 KB (369,664 bytes)

The file r4a3bdfb2.exe has been seen being distributed by the following URL.

http://dgkytklfjrqkb.cloudfront.net/.../yomz.exe

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