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oi226bmn4.exe

Ding Ruan

The application oi226bmn4.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:
fad4a38859a2521dde584e6873c68434

SHA-1:
4a73539cb3449ba1fd531edcc2fba63f665b4471

SHA-256:
653673045de50e072d8cb0d0dccb53d1c21f234a2f0ef86723dcabd4df61ddc0

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/15/2025 5:58:29 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ELEX (M)
16.11.13.3

File size:
417.9 KB (427,944 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\oi226bmn4.exe

Digital Signature
Signed by:
Ding Ruan

Authority:
thawte, Inc.

Valid from:
10/28/2016 7:00:00 AM

Valid to:
4/14/2017 6:59:59 AM

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:
7EFAEB24FF6C0328BE6C7BF1FA07E037

File PE Metadata
Compilation timestamp:
11/8/2016 1:37:43 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
6144:yRFUjb4l4er4oT7l020L/AM5HL8v3ByldLmRdtm3GoGnm50+GswaChkr0YDGTu0K:4mjbylD0f1eudaTLnmy+GLnhURGlAE6

Entry address:
0x1DED

Entry point:
E8, 43, F4, FF, FF, E9, 86, AF, 00, 00, 55, 8B, EC, 57, 8B, 7D, 0C, 85, FF, 74, 3B, 8B, 45, 08, 85, C0, 74, 34, 56, 8B, 30, 3B, F7, 74, 28, 57, 89, 38, E8, 48, 1E, 00, 00, 59, 85, F6, 74, 1B, 56, E8, DF, FC, FF, FF, 83, 3E, 00, 59, 75, 0F, 81, FE, 10, 48, 46, 00, 74, 07, 56, E8, D5, 3A, 00, 00, 59, 8B, C7, 5E, EB, 02, 33, C0, 5F, 5D, C3, 55, 8B, EC, 56, 8B, 75, 08, 85, F6, 0F, 84, 6E, 03, 00, 00, FF, 76, 04, E8, 0B, 6E, 00, 00, FF, 76, 08, E8, 03, 6E, 00, 00, FF, 76, 0C, E8, FB, 6D, 00, 00, FF, 76, 10, E8...
 
[+]

Entropy:
7.7906  (probably packed)

Code size:
368 KB (376,832 bytes)

The file oi226bmn4.exe has been seen being distributed by the following URL.

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

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