clibutherarachlgtsk.exe

Ding Ruan

The application clibutherarachlgtsk.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. It runs as a scheduled task under the Windows Task Scheduler triggered daily at a specified time. While running, it connects to the Internet address server-52-85-63-160.lhr50.r.cloudfront.net on port 80 using the HTTP protocol.
Publisher:
Ding Ruan  (signed and verified)

MD5:
4d055a64a68d8d7ebfc9bdd18458a37a

SHA-1:
a578ba56ddf0013168c96cbc32732bd6347bd708

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
5/15/2025 7:30:39 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.ELEX (M)
16.8.7.2

File size:
319.1 KB (326,808 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\clibutherarach\clibutherarachlgtsk.exe

Digital Signature
Signed by:

Authority:
thawte, Inc.

Valid from:
7/26/2016 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:
7064C7E0633892FEC3CE2C65A87C2033

File PE Metadata
Compilation timestamp:
8/3/2016 1:58:08 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
6144:K/hgQYAEybvfsKZ0whNUBTXpd7s1/Ccsd6UqhFEd:FQYAt0KZbuddsDsJqhFEd

Entry address:
0x1DC16

Entry point:
E8, 66, 58, 00, 00, E9, 7F, FE, FF, FF, 8B, 54, 24, 0C, 8B, 4C, 24, 04, 85, D2, 74, 7F, 0F, B6, 44, 24, 08, 0F, BA, 25, 9C, C2, 44, 00, 01, 73, 0D, 8B, 4C, 24, 0C, 57, 8B, 7C, 24, 08, F3, AA, EB, 5D, 8B, 54, 24, 0C, 81, FA, 80, 00, 00, 00, 7C, 0E, 0F, BA, 25, F8, A2, 44, 00, 01, 0F, 82, 86, 5D, 00, 00, 57, 8B, F9, 83, FA, 04, 72, 31, F7, D9, 83, E1, 03, 74, 0C, 2B, D1, 88, 07, 83, C7, 01, 83, E9, 01, 75, F6, 8B, C8, C1, E0, 08, 03, C1, 8B, C8, C1, E0, 10, 03, C1, 8B, CA, 83, E2, 03, C1, E9, 02, 74, 06, F3...
 
[+]

Entropy:
6.5353

Code size:
239 KB (244,736 bytes)

Scheduled Task
Task name:
Clibutherarach Log

Path:
C:\WINDOWS\Tasks\Clibutherarach Log.job

Trigger:
Daily (Runs daily at 10:34 AM)


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

TCP (HTTP):
Connects to server-52-85-63-160.lhr50.r.cloudfront.net  (52.85.63.160:80)

TCP (HTTP):
Connects to server-54-230-187-220.cdg51.r.cloudfront.net  (54.230.187.220:80)

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