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tystf6fvx.exe

Yu Bao

The executable tystf6fvx.exe has been detected as malware by 1 anti-virus scanner. This is a setup program which is used to install the application. The file has been seen being downloaded from dgkytklfjrqkb.cloudfront.net.
Publisher:
Yu Bao  (signed and verified)

MD5:
f72b9bca92c0159a1f76ab52202c153a

SHA-1:
0c2b2acaf7691421cd6ae0cc8c74dfbb5253b903

SHA-256:
0725778d67b48e1a8ce4fe7e2e9de86bb806a10a0ba09e6badd76a3f85316ff9

Scanner detections:
1 / 68

Status:
Malware

Analysis date:
12/24/2024 6:49:16 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP (M)
17.1.15.19

File size:
424.2 KB (434,392 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\tystf6fvx.exe

Digital Signature
Signed by:
Yu Bao

Authority:
thawte, Inc.

Valid from:
1/6/2017 1:00:00 AM

Valid to:
11/22/2017 12:59:59 AM

Subject:
CN=Yu Bao, 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:
324E4B124A3311B82F185FF09360D184

File PE Metadata
Compilation timestamp:
12/28/2016 1:16:08 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

Entry address:
0x385F

Entry point:
E8, D9, FC, FF, FF, E9, D9, 8E, 00, 00, 55, 8B, EC, 51, 56, 8B, 35, 30, 7B, 46, 00, 85, F6, 79, 25, A1, B4, CF, 46, 00, 33, F6, 33, 05, 00, 70, 46, 00, 89, 75, FC, 74, 0D, 56, 8D, 4D, FC, 51, FF, D0, 83, F8, 7A, 75, 01, 46, 89, 35, 30, 7B, 46, 00, 33, C0, 85, F6, 5E, 0F, 9F, C0, 8B, E5, 5D, C3, FF, 35, 88, 8E, 46, 00, FF, 15, 5C, 00, 46, 00, C3, 6A, 10, 68, 10, 62, 46, 00, E8, AE, 93, 00, 00, 33, DB, 89, 5D, E4, 8B, 75, 08, 83, FE, FE, 75, 17, E8, 10, 52, 00, 00, 89, 18, E8, CA, 57, 00, 00, C7, 00, 09, 00...
 
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Code size:
379 KB (388,096 bytes)

The file tystf6fvx.exe has been seen being distributed by the following URL.

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

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