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prepreinstaller_win.exe

The executable prepreinstaller_win.exe has been detected as malware by 12 anti-virus scanners. It is built using the Crossrider cross-browser extension toolkit. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider. The file has been seen being downloaded from d27ofrk4ubiq4a.cloudfront.net.
MD5:
eb1fc797a98d665ccbba65ffddaad99c

SHA-1:
d7eac86d5e7cc3e26bc38219daeea03f59efb854

SHA-256:
084616e15fec096f6066e54fa89322a8a5e9a62b3c546a2f2d18c6f46932af44

Scanner detections:
12 / 68

Status:
Malware

Explanation:
The software may change the browser's home page and search provider settings as well as display advertisements.

Analysis date:
5/31/2024 10:32:48 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160518-2

Dr.Web
Trojan.Crossrider1.58370
9.0.1.05190

ESET NOD32
Win32/Ramnit.A virus
8.0.319.0

F-Prot
W32/Ramnit.B!Generic
4.6.5.141

Kaspersky
Virus.Win32.Nimnul
15.0.0.562

Microsoft Security Essentials
Threat.Undefined
1.223.1465.0

Norman
Win32.Ramnit
28.05.2016 15:32:18

File size:
484 KB (495,616 bytes)

File type:
Executable application (Win32 EXE)

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

File PE Metadata
Compilation timestamp:
4/27/2016 3:13:24 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
6144:F1y7doarzNd92ZkfL7UJI6GSupjVIOkUlkuTpZntWAIq1YbzvfgO0W8g1x8hSX6e:F1kd3L7UJI61QWOk6/0YYHvfgOJEi2F

Entry address:
0x6E000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, 32, 6F, 01, 20, 2B, 85, 50, 72, 01, 20, 89, 85, 4C, 72, 01, 20, B0, 00, 86, 85, 9E, 74, 01, 20, 3C, 01, 0F, 85, DE, 02, 00, 00, 8B, 85, 4C, 72, 01, 20, 2B, 85, 58, 72, 01, 20, 8B, 00, 89, 85, EA, 73, 01, 20, 8B, 85, 4C, 72, 01, 20, 2B, 85, 5C, 72, 01, 20, 8B, 00, 89, 85, F2, 73, 01, 20, 83, BD, F2, 73, 01, 20, 00, 0F, 84, A9, 02, 00, 00, 83, BD, EA, 73, 01, 20, 00, 0F, 84, 9C, 02, 00, 00, 8D, 85, 8D, 74, 01, 20, 50, FF, 95, EA, 73, 01, 20, 83, F8, 00, 0F, 84, 86...
 
[+]

Entropy:
6.1725

Packer / compiler:
ASPack v1.08.04

Code size:
99.5 KB (101,888 bytes)

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

http://d27ofrk4ubiq4a.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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