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prepreinstaller_win2.exe

The executable prepreinstaller_win2.exe has been detected as malware by 12 anti-virus scanners. Accoriding to the detections, it is a variant of Zbot (Zeus), a trojan that attempts to steal confidential information (online credentials, and banking details) from a compromised computer and send it to online criminals via a command-and-control server. The file has been seen being downloaded from d2b9tt3o3tz5xd.cloudfront.net.
MD5:
0c64e1f825a79fcd9019ca8887c5e307

SHA-1:
862eb18bab8ac216b59e030abc98ec36985db5c6

SHA-256:
0ba47fa584076423ba03d36ed7ca3eeb07fb7591e8e499e6afb326d931d70b58

Scanner detections:
12 / 68

Status:
Malware

Explanation:
prepreinstaller_win2.exe is infected by a worm that might download, install and run additional malware as well as may spread to other executable files.

Analysis date:
1/12/2025 10:55:11 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160119-0

AVG
Win32/Zbot.G
2015.0.4477

Dr.Web
Win32.Rmnet.8
9.0.1.05190

Emsisoft Anti-Malware
Win32.Ramnit.N
10.0.0.5366

ESET NOD32
Win32/Ramnit.H virus
7.0.302.0

Kaspersky
Virus.Win32.Nimnul
15.0.0.562

McAfee
Trojan.RDN/Generic Downloader.x
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.213.5580.0

Norman
Win32.Ramnit.N
03.02.2016 10:30:35

Sophos
Virus 'W32/Ramnit-A'
5.23

VIPRE Antivirus
Threat.4732184
46838

File size:
412.8 KB (422,748 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\prepreinstaller_win2.exe

File PE Metadata
Compilation timestamp:
1/22/2016 8:16:43 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
6144:uip0mp3JoJh9du6N10cA4PrAgZm+E/kPotOjCmCwKQUyBL5:7pbV6N10cA48gZm+E/Tt3UKQUyBL5

Entry address:
0x3C000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, CE, B2, 01, 20, 2B, 85, 35, BA, 01, 20, 89, 85, 31, BA, 01, 20, B0, 00, 86, 85, 66, BC, 01, 20, 3C, 01, 0F, 85, BC, 01, 00, 00, 83, BD, 61, BB, 01, 20, 00, 74, 33, 83, BD, 65, BB, 01, 20, 00, 74, 2A, 8B, 85, 31, BA, 01, 20, 2B, 85, 61, BB, 01, 20, 8B, 00, 89, 85, 9E, BB, 01, 20, 8B, 85, 31, BA, 01, 20, 2B, 85, 65, BB, 01, 20, 8B, 00, 89, 85, A2, BB, 01, 20, EB, 61, 83, BD, 69, BB, 01, 20, 00, 74, 58, 8B, 85, 31, BA, 01, 20, 2B, 85, 69, BB, 01, 20, FF, 30, 8D, 85...
 
[+]

Entropy:
6.6914

Packer / compiler:
ASPack v1.08.04

Code size:
108 KB (110,592 bytes)

The file prepreinstaller_win2.exe has been seen being distributed by the following URL.

http://d2b9tt3o3tz5xd.cloudfront.net/prepreinstaller_win2.exe

Remove prepreinstaller_win2.exe - Powered by Reason Core Security
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