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prmrsr.exe

PermissionResearch

TMRG Inc.

The component is part of the TMRG platform which will track various behaviors of web browsing habits including tracking sites and domains visited as well as ads clicked. The application prmrsr.exe by TMRG has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is also typically executed from the user's temporary directory. While running, it connects to the Internet address wwwc.ri6.securestudies.com on port 80 using the HTTP protocol.
Publisher:
TMRG, Inc.  (signed by TMRG Inc.)

Product:
PermissionResearch

Version:
1.3.337.388 (Build 337.388)

MD5:
dcd072c3f09b3d3931af0afd672bf518

SHA-1:
9b5a5cf7734d04ffbd230ad8fb1108e84d1dcb69

SHA-256:
3c6eca8304670292fa36f154ea6609795c2989065813b6216f50eed9eb02ed9b

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
11/5/2024 1:33:29 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.TMRG (M)
16.10.7.2

File size:
3.6 MB (3,723,168 bytes)

Product version:
1.3.337.388 (Build 337.388)

Copyright:
Copyright © 2001-2004

File type:
Executable application (Win32 EXE)

Language:
English (United States)

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

Digital Signature
Signed by:
TMRG Inc.

Authority:
Symantec Corporation

Valid from:
1/18/2016 1:00:00 AM

Valid to:
2/17/2018 12:59:59 AM

Subject:
CN=TMRG Inc., O=TMRG Inc., L=Reston, S=Virginia, C=US

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
7E36C4BE2CEB69DF7BCEDB3B868E9EF9

File PE Metadata
Compilation timestamp:
9/23/2016 10:39:39 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
98304:TarvFoyniw1+siefttL3xtLIaTaKpu2Zvxj8FxG0IOPo3Azbm2xm:Fw1+siefttL3HbYxFjzSam

Entry address:
0x242A1B

Entry point:
E8, ED, 53, 01, 00, E9, 78, FE, FF, FF, 8B, FF, 55, 8B, EC, 51, 53, 8B, 45, 0C, 83, C0, 0C, 89, 45, FC, 64, 8B, 1D, 00, 00, 00, 00, 8B, 03, 64, A3, 00, 00, 00, 00, 8B, 45, 08, 8B, 5D, 0C, 8B, 6D, FC, 8B, 63, FC, FF, E0, 5B, C9, C2, 08, 00, 58, 59, 87, 04, 24, FF, E0, 58, 59, 87, 04, 24, FF, E0, 58, 59, 87, 04, 24, FF, E0, 8B, FF, 55, 8B, EC, 51, 51, 53, 56, 57, 64, 8B, 35, 00, 00, 00, 00, 89, 75, FC, C7, 45, F8, 97, 2A, 64, 00, 6A, 00, FF, 75, 0C, FF, 75, F8, FF, 75, 08, E8, AD, 0D, 04, 00, 8B, 45, 0C, 8B...
 
[+]

Code size:
2.7 MB (2,805,760 bytes)

Windows Firewall Allowed Program
Name:
prmrsr.exe


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

TCP (HTTP):
Connects to r-70-40-234-77.ff.avast.com  (77.234.40.70:80)

TCP (HTTP):
Connects to cdn-208-111-181-254.yyz.llnw.net  (208.111.181.254:80)

TCP (HTTP):
Connects to oss-ad-iad.securestudies.com  (165.193.78.187:80)

TCP (HTTP):
Connects to server-54-230-141-59.sfo5.r.cloudfront.net  (54.230.141.59:80)

TCP (HTTP):
Connects to post.securestudies.com  (165.193.78.234:80)

TCP (HTTP SSL):
Connects to a-0001.a-msedge.net  (204.79.197.200:443)

TCP (HTTP):
Connects to wwwc.ri2.securestudies.com  (4.16.74.104:80)

TCP (HTTP):
Connects to wwwc.iaa.securestudies.com  (205.217.169.104:80)

TCP (HTTP SSL):
Connects to wwwc.ia9.securestudies.com  (205.218.48.200:443)

TCP (HTTP):
Connects to wwwc.ia7.securestudies.com  (205.217.176.8:80)

TCP (HTTP SSL):
Connects to edge-star-shv-01-mad1.facebook.com  (31.13.83.8:443)

TCP (HTTP SSL):
Connects to edge-star-mini-shv-01-mad1.facebook.com  (31.13.83.36:443)

TCP (HTTP):
Connects to ec2-23-21-43-186.compute-1.amazonaws.com  (23.21.43.186:80)

TCP (HTTP):
Connects to cdn-208-111-181-253.yyz.llnw.net  (208.111.181.253:80)

TCP (HTTP):
Connects to 149-210-169-43.colo.transip.net  (149.210.169.43:80)

TCP (HTTP):
Connects to xmpp270n003.karere.mega.nz  (31.216.147.161:80)

TCP (HTTP):
Connects to wwwc.ria.securestudies.com  (184.80.40.40:80)

TCP (HTTP):
Connects to wwwc.ri7.securestudies.com  (4.16.75.8:80)

TCP (HTTP):
Connects to wwwc.ri6.securestudies.com  (4.16.74.232:80)

TCP (HTTP):
Connects to wwwc.ia8.securestudies.com  (205.218.48.168:80)

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