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nss9eb.tmp

The file nss9eb.tmp has been detected as a potentially unwanted program by 5 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. The file has been seen being downloaded from d2htwdv930b0cg.cloudfront.net. While running, it connects to the Internet address cdn-208-111-160-6.iad.llnw.net on port 80 using the HTTP protocol.
MD5:
dbc713a475d05f5f7a2b17beb1b87833

SHA-1:
7bce92806854fde2c5c67fb5e7927fe26d27b0af

SHA-256:
73630116d233c868c8da3f01be7ab562a4a321d08a36255a85f64f32cf6d6d1d

Scanner detections:
5 / 68

Status:
Potentially unwanted

Analysis date:
4/26/2024 9:52:52 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.Downloader
4.0.3.1563

ESET NOD32
Win32/Adware.ConvertAd.RK application
7.0.302.0

Qihoo 360 Security
HEUR/QVM42.1.Malware.Gen
1.0.0.1015

SUPERAntiSpyware
Trojan.Agent/Gen-FakeDefender
9837

Vba32 AntiVirus
suspected of Trojan.Downloader.gen
3.12.26.4

File size:
113.1 KB (115,834 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\nss9eb.tmp

File PE Metadata
Compilation timestamp:
12/5/2009 8:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:agXdZt9P6D3XJ7C29eD6D8fwYdTiWtEtToO9o4sm8:ae34429eW+BiWtCokt8

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
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Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file nss9eb.tmp has been seen being distributed by the following URL.

http://d2htwdv930b0cg.cloudfront.net/rvwr.exe

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

TCP (HTTP):
Connects to cdn-208-111-160-6.iad.llnw.net  (208.111.160.6:80)

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