yomz.exe

Ding Ruan

The application yomz.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. While running, it connects to the Internet address server-52-85-173-158.fra6.r.cloudfront.net on port 80 using the HTTP protocol.
Publisher:
Ding Ruan  (signed and verified)

MD5:
0f3ac41db554eaf08e31c66dec4aafc8

SHA-1:
247d90d5afc21de7203da9c0af81df6957bc6114

SHA-256:
82e480ffbf32507bf638712dd6300de7d8dae2dec670dc3d8f78b714fff8c497

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/9/2024 12:53:21 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ELEX (M)
17.2.13.10

File size:
432.3 KB (442,624 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\yomz.exe

Digital Signature
Signed by:

Authority:
thawte, Inc.

Valid from:
1/24/2017 12:00:00 AM

Valid to:
4/14/2017 12:59:59 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:
026BAC258E12D9F49DFF90E11ADB2D06

File PE Metadata
Compilation timestamp:
2/13/2017 1:47:51 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x2D48

Entry point:
E8, 51, 0F, 00, 00, E9, 99, B1, 00, 00, 55, 8B, EC, 83, EC, 38, 56, 57, 6A, 08, 89, 4D, FC, 8D, 7D, D0, 59, 33, C0, 89, 55, F8, F3, AB, 8B, 4D, F8, 33, F6, 6A, 40, 5A, E8, DD, 7E, 00, 00, 85, C0, 0F, 84, 81, 01, 00, 00, 8B, 7D, FC, 8B, 7F, 3C, 8D, 97, F8, 00, 00, 00, E8, C4, 7E, 00, 00, 85, C0, 0F, 84, 68, 01, 00, 00, 03, 7D, FC, B8, 4C, 01, 00, 00, 66, 39, 47, 04, 0F, 85, 56, 01, 00, 00, F6, 47, 38, 01, 0F, 85, 4C, 01, 00, 00, 0F, B7, 57, 06, 0F, B7, 47, 14, 85, D2, 74, 20, 8D, 4F, 24, 03, C8, 83, 79, 04...
 
[+]

Code size:
387.5 KB (396,800 bytes)

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

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

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to server-52-85-173-232.fra6.r.cloudfront.net  (52.85.173.232:80)

TCP (HTTP):
Connects to server-52-85-173-158.fra6.r.cloudfront.net  (52.85.173.158:80)

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