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rusfolder_downloader.exe

LLC

The application rusfolder_downloader.exe by LLC has been detected as adware by 10 anti-malware scanners. This is a setup program which is used to install the application. The file has been seen being downloaded from 19pyrylrnpivb6z.lastbuy.ru.
Publisher:
LLC   (signed and verified)

Version:
1.0.0.0

MD5:
6dc48fd984f5bc631558501f9c449048

SHA-1:
0cd2595594de3c9d13939780f19b371cd7072378

SHA-256:
938d4af801086d10c85b01ea4269a880576881646a27e03a0a8702308fccc21a

Scanner detections:
10 / 68

Status:
Adware

Analysis date:
1/15/2025 11:04:22 PM UTC  (a few moments ago)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.InstallMonster
7.1.1

AhnLab V3 Security
PUP/Win32.InstallMonstr
2015.06.13

Avira AntiVirus
TR/Crypt.XPACK.Gen
7.11.30.172

AVG
Generic
2016.0.3080

Dr.Web
Trojan.InstallMonster.1235
9.0.1.05190

ESET NOD32
Win32/InstallMonstr.LO potentially unwanted application
7.0.302.0

K7 AntiVirus
Unwanted-Program
13.205.16229

Malwarebytes
PUP.Optional.InstallMonster
v2015.06.12.05

Reason Heuristics
PUP.Amonitize
15.6.12.17

VIPRE Antivirus
Threat.4150696
40786

File size:
3.9 MB (4,073,440 bytes)

Product version:
1.0.0.0

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\downloads\rusfolder_downloader.exe

Digital Signature
Signed by:
LLC

Authority:
COMODO CA Limited

Valid from:
5/20/2015 5:00:00 AM

Valid to:
5/20/2016 4:59:59 AM

Subject:
CN="LLC ""GRIN SOFT LAYN""", O="LLC ""GRIN SOFT LAYN""", STREET="PUSHKINSKA, 21", L=Kyyiv, S=Kyyiv, PostalCode=01004, C=UA

Issuer:
CN=COMODO RSA Code Signing CA, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
56A3261CE14E941412A3EFCFDA88C465

File PE Metadata
Compilation timestamp:
6/20/1992 3:22:17 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
98304:v4yeDmPBbiCXd6hh4ghy3cBRLV+NNwI4FRrQl2/a:v4yT1orVojzI/a

Entry address:
0x6DF9F0

Entry point:
60, BE, 00, 00, 7F, 00, 8D, BE, 00, 10, C1, FF, 57, 83, CD, FF, EB, 10, 90, 90, 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, 83, F0, FF, 74, 75, D1, F8, 89...
 
[+]

Packer / compiler:
UPX 2.90LZMA

Code size:
2.9 MB (3,080,192 bytes)

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

http://19pyrylrnpivb6z.lastbuy.ru/c1lBU2RTY3Fqa2tDdWJTSXsic2lkIjoiNjQxNiIsInN1Yl9pZCI6IjMyODQzNDYiLCJybmQwIjoiaU9QcVRlYWhhU3JTRzV0T0hxa0ZTZyIsInZlciI6IjEiLCJuYW1lIjoicnVzZm9sZGVyX2Rvd25sb2FkZXIiLCJ1cmwiOiJodHRwOi8vc3RnMjUucnVzZm9sZGVyLmNvbS9kb3dubG9hZC8_MzYyNDI3NTQmOXUycjNzdkZlcXJ6THUwdnhCdVJsRDRQbkdacTVGZTE2YUZsdGxiVG9xa0NXcm9UJTJCU1daOVRXam9LRnB1ZmUwM29jN0g4V1F4Q2clM0QmaW5zdGFsbG1vbnN0ZXI9MSIsInR5cGUiOiJpZm9sZGVyIiwic2l6ZSI6IjIyMTg5ODk3In0,

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