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nuvcphuun.exe

Ding Ruan

The application nuvcphuun.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-52-85-173-208.fra6.r.cloudfront.net on port 80 using the HTTP protocol.
Publisher:
Ding Ruan  (signed and verified)

MD5:
025e12109bf9670f3f23d8cc4d91b0f5

SHA-1:
57777a7e60d2c7aca41f1146ad1fa8e12e8cdf65

SHA-256:
3a0a3251d4123b70f69a6c74497758e3322cb390bd4105ee8aed83dbcfbfe3fe

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
12/26/2024 12:02:12 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ELEX (M)
17.2.13.8

File size:
391.5 KB (400,944 bytes)

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
Ding Ruan

Authority:
thawte, Inc.

Valid from:
1/24/2017 3:00:00 AM

Valid to:
4/14/2017 2:59:59 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:
2/9/2017 12:28:00 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x6D84

Entry point:
E8, 57, FE, FF, FF, E9, 1A, 3A, 00, 00, 6A, 0C, 68, D0, F2, 45, 00, E8, A6, 42, 00, 00, 6A, 0E, E8, D1, 29, 00, 00, 59, 83, 65, FC, 00, 8B, 75, 08, 8B, 46, 04, 85, C0, 74, 30, 8B, 0D, 90, 1D, 46, 00, BA, 8C, 1D, 46, 00, 89, 4D, E4, 85, C9, 74, 11, 39, 01, 75, 2C, 8B, 41, 04, 89, 42, 04, 51, E8, 92, 22, 00, 00, 59, FF, 76, 04, E8, 89, 22, 00, 00, 59, 83, 66, 04, 00, C7, 45, FC, FE, FF, FF, FF, E8, 0A, 00, 00, 00, E8, 94, 42, 00, 00, C3, 8B, D1, EB, C5, 6A, 0E, E8, F9, E0, FF, FF, 59, C3, 55, 8B, EC, 83, 7D...
 
[+]

Code size:
352.5 KB (360,960 bytes)

The file nuvcphuun.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-52-85-173-120.fra6.r.cloudfront.net  (52.85.173.120:80)

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

TCP (HTTP):
Connects to server-52-85-173-8.fra6.r.cloudfront.net  (52.85.173.8:80)

TCP (HTTP):
Connects to server-52-85-173-176.fra6.r.cloudfront.net  (52.85.173.176:80)

TCP (HTTP):
Connects to server-52-85-173-208.fra6.r.cloudfront.net  (52.85.173.208:80)

TCP (HTTP):
Connects to server-52-85-173-15.fra6.r.cloudfront.net  (52.85.173.15:80)

TCP (HTTP):
Connects to server-52-85-173-92.fra6.r.cloudfront.net  (52.85.173.92:80)

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