downbook.exe

The application downbook.exe has been detected as a potentially unwanted program by 18 anti-malware scanners. This is a setup program which is used to install the application. It is set to automatically start when a user logs into Windows via the current user run registry key under the display name ‘DownBook’. The file has been seen being downloaded from fast-books.net.
MD5:
c4bb2d2a635b91b53fde69715b11766e

SHA-1:
ee0fb167355bc4b19addbf5f67f28d3633526157

SHA-256:
b8d01365114a0efd26484d13f0ac64d1195f2757d45c75a40b70721d68b5866e

Scanner detections:
18 / 68

Status:
Potentially unwanted

Analysis date:
4/23/2024 10:04:12 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.Badur
7.1.1

AhnLab V3 Security
Trojan/Win32.Badur
2015.05.30

Avira AntiVirus
TR/Agent.1013912
8.3.1.6

avast!
Win32:Malware-gen
150525-2

AVG
Generic35
2016.0.3094

ESET NOD32
Win32/GetBooks.F potentially unwanted application
7.0.302.0

F-Prot
W32/Banker.T.gen
4.6.5.141

IKARUS anti.virus
PUA.GetBooks
t3scan.1.9.2.0

K7 AntiVirus
Trojan
13.204.16076

Kaspersky
HEUR:Trojan.Win32.Generic
14.0.0.1965

Malwarebytes
Trojan.Agent.DF
v2015.05.30.02

NANO AntiVirus
Trojan.Win32.Agent.cudmwh
0.30.24.1636

nProtect
Trojan/W32.Badur.1013915
15.05.29.01

Panda Antivirus
Trj/Genetic.gen
15.05.30.02

SUPERAntiSpyware
Trojan.Agent/Gen-Badur
9845

Vba32 AntiVirus
Trojan.Agent.acijr
3.12.26.4

VIPRE Antivirus
Threat.4150696
40552

Zillya! Antivirus
Trojan.Badur.Win32.1338
2.0.0.2196

File size:
990.2 KB (1,013,915 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\downbook\downbook.exe

File PE Metadata
Compilation timestamp:
11/28/2013 5:56:42 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:nkgTn/et1faP8fhIJU/4urbz5P/Bx1QeWxs6y:V/E1kO4b01iZm6y

Entry address:
0x318410

Entry point:
60, BE, 00, 50, 62, 00, 8D, BE, 00, C0, DD, FF, C7, 87, F8, 69, 26, 00, 88, C9, 78, 01, 57, 83, CD, FF, EB, 0E, 90, 90, 90, 90, 8A, 06, 46, 88, 07, 47, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 72, ED, B8, 01, 00, 00, 00, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, 01, DB, 73, 0B, 75, 28, 8B, 1E, 83, EE, FC, 11, DB, 72, 1F, 48, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C0, EB, D4, 01, DB, 75, 07, 8B, 1E, 83, EE, FC, 11, DB, 11, C9, EB, 52, 31, C9, 83, E8, 03, 72, 11, C1, E0, 08, 8A, 06, 46...
 
[+]

Entropy:
7.9202

Packer / compiler:
UPX v0.89.6 - v1.02 / v1.05 -v1.22 (Delphi) stub

Code size:
976 KB (999,424 bytes)

Startup File (User Run)
Registry location:
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Name:
DownBook

Command:
"C:\users\{user}\appdata\local\downbook\downbook.exe" ff7ec8f94a6d3392b1b6316ca61cb33d 6


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

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