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flash_upgrade.exe

Sapo

The application flash_upgrade.exe by Sapo has been detected as a potentially unwanted program by 2 anti-malware scanners. This is a setup program which is used to install the application. The file has been seen being downloaded from www.4shared.com and multiple other hosts.
Publisher:
Sapo  (signed and verified)

MD5:
df11ccb035a99cdb4759e1aad1e160a7

SHA-1:
927036892463d194aa39f435968dff3565e9ea7e

SHA-256:
f6af092f2a689750d4531dd3f518a1358e0afe10e0a39baf98cd7b8e83c90702

Scanner detections:
2 / 68

Status:
Potentially unwanted

Analysis date:
11/27/2024 11:32:33 AM UTC  (today)

Scan engine
Detection
Engine version

ESET NOD32
Win32/TrojanDownloader.Banload.WWJ trojan
8.0.319.0

Reason Heuristics
PUP.OLX
16.4.13.1

File size:
394.9 KB (404,408 bytes)

File type:
Executable application (Win32 EXE)

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

Digital Signature
Signed by:
Sapo

Authority:
Sapo

Valid from:
4/4/2016 8:12:13 PM

Valid to:
4/5/2017 8:12:13 PM

Subject:
CN=sapo.pt, O=Sapo, L=Lisboa, S=Lisboa, C=PT

Issuer:
CN=sapo.pt, O=Sapo, L=Lisboa, S=Lisboa, C=PT

Serial number:
0099BD1E5F2C546EE6

File PE Metadata
Compilation timestamp:
6/19/1992 7:22:17 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
6144:wD60hW2N9k54nnKWBi+yNxA+hSPoH0MgoDH+w9MNhTDTTMV2JyclNbp4ar/:tjS9kiKSkC6+oH0Maw9gT5yaH9r

Entry address:
0x115B50

Entry point:
60, BE, 00, 50, 4B, 00, 8D, BE, 00, C0, F4, FF, C7, 87, C4, 30, 0E, 00, 90, ED, 0D, EC, 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...
 
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Packer / compiler:
UPX v0.89.6 - v1.02 / v1.05 -v1.22 (Delphi) stub

Code size:
388 KB (397,312 bytes)

The file flash_upgrade.exe has been seen being distributed by the following 2 URLs.

http://www.4shared.com/.../7kQP2RsGce?lgfp=3000&dsid=fu0n0v.ca42b22d15ac7079af7e377806585eb8&sbsr=fd19de8666ddd478d68030ff8588d2f296d&usbsr=59e1e49ea7c199f287dff8e2b8120af296d

http://www.4shared.com/.../1UQH9B5Hba?lgfp=3000&dsid=fu0n0v.cee1b979783711359c851699bc4ae7fc&sbsr=f4205ab16f7d1c0da0e7547479a2863096d&usbsr=bcfb795fb4b22190855518a3484a8f0596d

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