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postak-ie-2.5.1.exe

Seznam.cz, a.s.

The application postak-ie-2.5.1.exe by Seznam.cz, a.s has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from download.instaluj.cz and multiple other hosts.
Publisher:
Seznam.cz, a.s.  (signed and verified)

MD5:
8a967cb59803769a35bd2ee6a5e4b66f

SHA-1:
200140b5486042816c63ec6b6ce33fe6ec7cc3d5

SHA-256:
9080252126375dcbddcc7616d98dec0638fbf25ebb69b31df1db1ad7902a6b99

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
11/5/2024 1:56:12 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Seznam (M)
16.10.19.12

File size:
2 MB (2,127,976 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\postak-ie-2.5.1.exe

Digital Signature
Signed by:
Seznam.cz, a.s.

Authority:
Thawte, Inc.

Valid from:
4/5/2011 2:00:00 AM

Valid to:
4/5/2012 1:59:59 AM

Subject:
CN="Seznam.cz, a.s.", O="Seznam.cz, a.s.", L=Prague, S=Czech Republic, C=CZ

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
2F710673E9C7B8618A0CF6CCD6B56DFB

File PE Metadata
Compilation timestamp:
12/5/2009 11:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:1H82XYXm0OLHQzlSm3PVbe1rHsBcOQBGmxZza5dYDD:S2XYXm0cwzlSqbelMwxZzauD

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file postak-ie-2.5.1.exe has been seen being distributed by the following 2 URLs.

http://download.instaluj.cz/dwl/7474d69f3b33aec90738898d2daa0b09/internet-site/elektronicka-posta/seznam-postak/.../postak-ie-2.5.1.exe

http://download.seznam.cz/.../postak-ie-2.5.1.exe

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