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prefhelper.exe

Wajamu

The file is part of Wajam, a web browser extension that injects social search integration into various search portals such as Google. The application prefhelper.exe by Wajamu has been detected as adware by 2 anti-malware scanners. It runs as a scheduled task under the Windows Task Scheduler triggered to execute each time a user logs in.
Publisher:
Wajamu  (signed and verified)

MD5:
e24427accb0ec148bbad970d77c73749

SHA-1:
9857de009cb40507f1e625a6acfeab8c07676afa

SHA-256:
91c73a327a2476e883f46f2e86f6ae00b79f8393029fc6c22293f9b9c2085034

Scanner detections:
2 / 68

Status:
Adware

Analysis date:
12/24/2024 5:16:47 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajamu.K
14.7.4.10

VIPRE Antivirus
Wajamu
30918

File size:
331.3 KB (339,232 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\Program Files\v-bates\prefhelper.exe

Digital Signature
Signed by:
Wajamu

Authority:
Thawte, Inc.

Valid from:
8/25/2013 8:00:00 PM

Valid to:
8/26/2014 7:59:59 PM

Subject:
CN=Wajamu, O=Wajamu, L=Herzlia, S=Israel, C=IL

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
254859747F512412BB92CB81D0C020A7

File PE Metadata
Compilation timestamp:
6/26/2014 10:33:11 AM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
11.0

CTPH (ssdeep):
6144:gmUj61N7DxK+hOFchak8VjxKS/CD8uEBKQ+gcY2sCyXIM:wCxDQCj8Vj487JcFyXIM

Entry address:
0x8FCB

Entry point:
E8, 43, A5, 00, 00, E9, 7B, FE, FF, FF, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, CC, 57, 56, 8B, 74, 24, 10, 8B, 4C, 24, 14, 8B, 7C, 24, 0C, 8B, C1, 8B, D1, 03, C6, 3B, FE, 76, 08, 3B, F8, 0F, 82, 68, 03, 00, 00, 0F, BA, 25, C4, 82, 44, 00, 01, 73, 07, F3, A4, E9, 17, 03, 00, 00, 81, F9, 80, 00, 00, 00, 0F, 82, CE, 01, 00, 00, 8B, C7, 33, C6, A9, 0F, 00, 00, 00, 75, 0E, 0F, BA, 25, 08, 3B, 44, 00, 01, 0F, 82, DA, 04, 00, 00, 0F, BA, 25, C4, 82, 44, 00, 00, 0F, 83, A7, 01, 00, 00, F7, C7, 03, 00, 00, 00, 0F...
 
[+]

Entropy:
5.9675

Code size:
207 KB (211,968 bytes)

Scheduled Task
Task name:
FF Watcher {7DE2B949-3A4A-49E6-8857-8E6503EE01CA}

Trigger:
Logon (Runs on logon)


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