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171.dll

The module 171.dll has been detected as adware by 41 anti-malware scanners. It is installed within the context of Internet Explore as a BHO (Browser Helper Object) under the name ‘BlockAndSurf’. 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.
MD5:
a622dc300aaeca38f080e274d763c57e

SHA-1:
352aec0ec9e425747ad7a686c06ae80910a5a47e

SHA-256:
b7962f14a599fda22d7f2c58390fb46275bfed962998b0a6b0f0ce8913ae8c9a

Scanner detections:
41 / 68

Status:
Adware

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
4/18/2024 2:44:25 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Win32.Ramnit.N
865

Agnitum Outpost
Win32.Nimnul.Gen.2
7.1.1

AhnLab V3 Security
Win32/Ramnit.G
2014.06.14

Avira AntiVirus
W32/Ramnit.C
7.11.30.172

avast!
Win32:RmnDrp
2014.9-140922

AVG
Win32/Zbot.F
2015.0.3343

Baidu Antivirus
Virus.Win32.Nimnul.$a
4.0.3.14922

Bitdefender
Win32.Ramnit.N
1.0.20.1325

Bkav FE
W32.InjectAdwaredDwnA1.PE
1.3.0.4959

Clam AntiVirus
W32.Ramnit-1
0.98/19086

Comodo Security
Virus.Win32.Ramnit.K
18539

Dr.Web
Win32.Rmnet.12
9.0.1.0265

Emsisoft Anti-Malware
Win32.Ramnit.N
8.14.09.22.12

ESET NOD32
Win32/Ramnit.H virus
8.7.0.302.0

Fortinet FortiGate
W32/Ramnit.C
9/22/2014

F-Prot
W32/Ramnit.E
v6.4.6.5.141

F-Secure
Win32.Ramnit.N
11.2014-22-09_2

G Data
Win32.Ramnit
14.9.24

IKARUS anti.virus
Virus.Win32.Ramnit
t3scan.1.6.1.0

K7 AntiVirus
Virus
13.1712403

Kaspersky
Virus.Win32.Nimnul
14.0.0.3212

Malwarebytes
Virus.Ramnit
v2014.09.22.12

McAfee
W32/Ramnit.a
5600.6999

Microsoft Security Essentials
Threat.Undefined
1.175.2155.0

MicroWorld eScan
Win32.Ramnit.N
15.0.0.795

NANO AntiVirus
Virus.Win32.Nimnul.bqjjnb
0.28.0.60253

Norman
Ramnit.AS
11.20140922

nProtect
Virus/W32.SpyEye
14.06.13.01

Panda Antivirus
W32/Cosmu.E
14.09.22.01

Qihoo 360 Security
Virus.Win32.Ramnit.A
1.0.0.1015

Quick Heal
W32.Ramnit.A
9.14.14.00

Reason Heuristics
Adware.Revizer.BHO.D
14.8.13.22

Rising Antivirus
PE:Win32.Mgr.b!1594784
23.00.65.14920

Sophos
W32/Ramnit-A
4.98

Total Defense
Win32/Ramnit.C
37.0.10997

Trend Micro House Call
PE_RAMNIT.DEN
7.2.265

Trend Micro
PE_RAMNIT.DEN
10.465.22

Vba32 AntiVirus
Virus.Win32.Nimnul.b
3.12.26.0

VIPRE Antivirus
Threat.4732184
29708

ViRobot
Win32.Nimnul.A
2011.4.7.4223

Zillya! Antivirus
Virus.Nimnul.Win32.2
2.0.0.1823

File size:
185.5 KB (189,952 bytes)

File type:
Dynamic link library (Win32 DLL)

Language:
English (United States)

Common path:
C:\Program Files\blockandsurf-soft\171.dll

Registration
CLSID:
{32F27290-E338-AB3F-4409-20917099C4EE}

COM registered:
Yes

File PE Metadata
Compilation timestamp:
5/26/2014 8:30:17 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
3072:cRBxTM+wxJLp1lvbQOB92zLYqfMgR+P+CnFvJPTCfW8oyvCemv8gCYl:uDrWNpfv92vplkNn8oyOxr

Entry address:
0xCA99

Entry point:
55, 8B, EC, 83, 7D, 0C, 01, 75, 05, E8, B7, 5E, 00, 00, FF, 75, 10, FF, 75, 0C, FF, 75, 08, E8, 07, 00, 00, 00, 83, C4, 0C, 5D, C2, 0C, 00, 6A, 0C, 68, 38, 14, 02, 10, E8, E8, 3F, 00, 00, 33, C0, 40, 8B, 75, 0C, 85, F6, 75, 0C, 39, 35, 60, 4E, 02, 10, 0F, 84, E4, 00, 00, 00, 83, 65, FC, 00, 83, FE, 01, 74, 05, 83, FE, 02, 75, 35, 8B, 0D, 68, B1, 01, 10, 85, C9, 74, 0C, FF, 75, 10, 56, FF, 75, 08, FF, D1, 89, 45, E4, 85, C0, 0F, 84, B1, 00, 00, 00, FF, 75, 10, 56, FF, 75, 08, E8, 11, FE, FF, FF, 89, 45, E4...
 
[+]

Entropy:
6.4244

Developed / compiled with:
Microsoft Visual C++

Code size:
97.5 KB (99,840 bytes)

Internet Explorer BHO
Display name:
BlockAndSurf

CLSID:
{32F27290-E338-AB3F-4409-20917099C4EE}


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