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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:
b19f85ad0e51cad66c09cacc1e459cf4

SHA-1:
21d9427f52579457b5d7f7f8fc1fb15f3f1a8a30

SHA-256:
f981778aa1d59e4199c0d0a34f8d225107848b9c2de2287ba326624946d3d81d

Scanner detections:
2 / 68

Status:
Adware

Analysis date:
4/16/2024 10:45:52 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Wajamu.K
14.6.25.19

VIPRE Antivirus
Wajamu
30586

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 5:00:00 PM

Valid to:
8/26/2014 4:59:59 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:
6/21/2014 11:52:46 PM

OS version:
6.0

OS bitness:
Win32

Subsystem:
Windows Console

Linker version:
11.0

CTPH (ssdeep):
6144:nmUj61N7DxK+hOFchak8VjxKS/CD8uEBKQ+gcY2sCyXIu:xCxDQCj8Vj487JcFyXIu

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:
5.9674

Code size:
207 KB (211,968 bytes)

Scheduled Task
Task name:
FF Watcher {1931B326-5D1D-47CD-AC9E-C46CED68F3D5}

Trigger:
Logon (Runs on logon)


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