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appmgr.bak

Steel Cut

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file appmgr.bak by Steel Cut has been detected as adware by 14 anti-malware scanners. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
Steel Cut  (signed and verified)

Version:
1.0.5587.30664

MD5:
5dbb489ae33111aa44cb2995b29b7761

SHA-1:
ec0123567b6528b6be7730847983b688033bc169

SHA-256:
bf4da66701fc2e719098ebbcfc07d65fdbf987d16b4bdae078d698ef33c50ae1

Scanner detections:
14 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/26/2024 12:38:08 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.04.21

Avira AntiVirus
ADWARE/BrowseFox.Gen7
3.6.1.96

AVG
Generic
2016.0.3133

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.15421

Bkav FE
W32.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Browsefox-724
0.98/20353

Dr.Web
Trojan.Yontoo.1734
9.0.1.05190

ESET NOD32
Win32/BrowseFox.AG potentially unwanted (variant)
9.11507

herdProtect (fuzzy)
variant of appmgr.exe (Adware)
2015.7.22.13

IKARUS anti.virus
PUA.BrowseFox
t3scan.1.8.9.0

NANO AntiVirus
Trojan.Win32.Yontoo.dqaejr
0.30.20.1219

Reason Heuristics
Threat.Yontoo.SteelCut
15.4.21.3

Zillya! Antivirus
Adware.Agent.Win32.54636
2.0.0.2145

File size:
445.2 KB (455,920 bytes)

Product version:
1.0.5587.30664

Language:
English (United States)

Common path:
C:\ProgramData\application data\appmgr1.26.3056825\appmgr.bak

Digital Signature
Signed by:
Steel Cut

Authority:
VeriSign, Inc.

Valid from:
1/11/2015 10:00:00 AM

Valid to:
1/12/2016 9:59:59 AM

Subject:
CN=Steel Cut, O=Steel Cut, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
0ABB826DEFFE019B3B61D91322DE992A

File PE Metadata
Compilation timestamp:
4/20/2015 10:02:19 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
12288:Y4wRS9Tyrij0asFeYxJdzBhGBI6cY5IFXzc:YFRS9Ti60JJdBhJw5IFXzc

Entry address:
0x2185C

Entry point:
E8, 98, EB, 00, 00, E9, 7F, FE, FF, FF, 55, 8B, EC, 56, 8B, 75, 08, 83, 3C, F5, 20, 4E, 46, 00, 00, 75, 13, 56, E8, 71, 00, 00, 00, 59, 85, C0, 75, 08, 6A, 11, E8, C7, 5F, 00, 00, 59, FF, 34, F5, 20, 4E, 46, 00, FF, 15, 60, 11, 45, 00, 5E, 5D, C3, 56, 57, BE, 20, 4E, 46, 00, 8B, FE, 53, 8B, 1F, 85, DB, 74, 17, 83, 7F, 04, 01, 74, 11, 53, FF, 15, 54, 11, 45, 00, 53, E8, E5, C7, FF, FF, 83, 27, 00, 59, 83, C7, 08, 81, FF, 40, 4F, 46, 00, 7C, D8, 5B, 83, 3E, 00, 74, 0E, 83, 7E, 04, 01, 75, 08, FF, 36, FF, 15...
 
[+]

Entropy:
6.3802

Code size:
316.5 KB (324,096 bytes)

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