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microsoft_word_ar.exe

Webcellence Ltd.

The application microsoft_word_ar.exe by Webcellence has been detected as adware by 16 anti-malware scanners. This is a setup program which is used to install the application. It uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from api.downloadastro.com and multiple other hosts.
Publisher:
Webcellence Ltd.  (signed and verified)

MD5:
74fd481d6593a794d8afd81dbe909f3e

SHA-1:
b974a803b61bc887faddeded52d67b9fe7788824

SHA-256:
4940a0bb585456f34a608a95292ead2677117fc5f7dc8f634efa96a90f715301

Scanner detections:
16 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Analysis date:
4/26/2024 4:24:15 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Avira AntiVirus
ADWARE/InstallCore.Gen7
7.11.132.34

AVG
InstallCore.O
2015.0.3556

Comodo Security
Application.Win32.InstallCore.KAT
17802

Dr.Web
Trojan.Packed.24524
9.0.1.052

ESET NOD32
Win32/InstallCore.FJ (variant)
8.9434

F-Prot
W32/InstallCore.R.gen
v6.4.7.1.166

Malwarebytes
PUP.Optional.InstallCore.A
v2014.02.21.12

McAfee
Artemis!74FD481D6593
5600.7212

Reason Heuristics
PUP.Webcellence.R
14.8.7.20

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.14219

Sophos
Install Core Click run software
4.97

SUPERAntiSpyware
PUP.InstallCore/Variant
10770

Trend Micro House Call
TROJ_GEN.F47V0213
7.2.52

Vba32 AntiVirus
Downware.InstallCore
3.12.24.3

VIPRE Antivirus
Trojan.Win32.Generic
26558

File size:
665.5 KB (681,456 bytes)

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
Webcellence Ltd.

Authority:
VeriSign, Inc.

Valid from:
3/5/2013 1:00:00 AM

Valid to:
5/5/2014 12:59:59 AM

Subject:
CN=Webcellence Ltd., OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Webcellence Ltd., L=Moshav Ora, S=Israel, C=IL

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:
2742F1242826FB7F69B052B7F394DFED

File PE Metadata
Compilation timestamp:
6/19/1992 11:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:YfyMJfsGWgRKsZprsYnHLih4YxcIx03QgvCbvIJmRpkDiDzhD/jrUS0L/eo:YfyMJfslgRKsZ8ThBpDNcD0lboSAeo

Entry address:
0x98CC

Entry point:
55, 8B, EC, 83, C4, CC, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, FA, 97, FF, FF, E8, 01, AA, FF, FF, E8, 2C, CC, FF, FF, E8, 73, CC, FF, FF, E8, 0A, F3, FF, FF, E8, 71, F4, FF, FF, 33, C0, 55, 68, 76, 9F, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 2C, 9F, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, B0, 40, 00, E8, 9B, FE, FF, FF, E8, 26, FA, FF, FF, 8D, 55, F0, 33, C0, E8, E0, D0, FF, FF, 8B, 55, F0, B8, D8, BD, 40, 00, E8, AB, 98, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, D8, BD, 40, 00, B2, 01, B8...
 
[+]

Code size:
36 KB (36,864 bytes)

The file microsoft_word_ar.exe has been seen being distributed by the following 4 URLs.

http://api.downloadastro.com/api/downloader/.../ar?callback=jsonpCallbackDownload&_=1391969408

http://api.downloadastro.com/api/downloader/.../ar?callback=jsonpCallbackDownload&_=1392565933

http://api.downloadastro.com/api/downloader/.../ar?callback=jsonpCallbackDownload&_=1392666616

http://safe.to.download.downloadastro.com/microsoft_word_ar.exe

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