Malware Analysis Report

2025-01-19 07:30

Sample ID 231028-yyg7ssbf44
Target NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe
SHA256 a0d19e38527e7ec077e2c8a1a6ad94f2a37991ee563298b18163cb98395f0241
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a0d19e38527e7ec077e2c8a1a6ad94f2a37991ee563298b18163cb98395f0241

Threat Level: Known bad

The file NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-28 20:11

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-10-28 20:11

Reported

2023-10-28 22:29

Platform

win7-20231025-en

Max time kernel

150s

Max time network

151s

Command Line

"C:\Windows\system32\Dwm.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1861898231-3446828954-4278112889-1000\Software\Microsoft\Windows\CurrentVersion\Run\8042107A = "C:\\Users\\Admin\\AppData\\Roaming\\8042107A\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Processes

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 spaines.pw udp
US 216.218.185.162:80 spaines.pw tcp

Files

memory/2596-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2596-2-0x0000000001D60000-0x0000000002760000-memory.dmp

memory/1184-3-0x0000000000110000-0x0000000000116000-memory.dmp

memory/1280-1-0x0000000002210000-0x0000000002216000-memory.dmp

memory/1280-5-0x0000000002210000-0x0000000002216000-memory.dmp

memory/1184-8-0x0000000077AEF000-0x0000000077AF1000-memory.dmp

memory/1280-10-0x0000000077941000-0x0000000077942000-memory.dmp

memory/1184-9-0x0000000077AF0000-0x0000000077AF1000-memory.dmp

memory/1184-7-0x0000000077AEF000-0x0000000077AF0000-memory.dmp

memory/1184-6-0x0000000000810000-0x0000000000826000-memory.dmp

memory/2596-11-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2596-12-0x0000000001D60000-0x0000000002760000-memory.dmp

memory/1184-14-0x0000000000110000-0x0000000000116000-memory.dmp

memory/1184-15-0x0000000000150000-0x0000000000151000-memory.dmp

memory/1244-19-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1184-25-0x0000000000110000-0x0000000000116000-memory.dmp

memory/1244-24-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1144-23-0x0000000077941000-0x0000000077942000-memory.dmp

memory/1144-22-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

memory/1280-21-0x00000000021C0000-0x00000000021C6000-memory.dmp

memory/1280-26-0x00000000021C0000-0x00000000021C6000-memory.dmp

memory/1280-27-0x0000000077AD0000-0x0000000077AD1000-memory.dmp

memory/1184-31-0x0000000000160000-0x0000000000161000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-28 20:11

Reported

2023-10-28 22:30

Platform

win10v2004-20231023-en

Max time kernel

26s

Max time network

37s

Command Line

"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-984744499-3605095035-265325720-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\38DA41D2 = "C:\\Users\\Admin\\AppData\\Roaming\\38DA41D2\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4712 wrote to memory of 4212 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe C:\Windows\SysWOW64\winver.exe
PID 4712 wrote to memory of 4212 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe C:\Windows\SysWOW64\winver.exe
PID 4712 wrote to memory of 4212 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe C:\Windows\SysWOW64\winver.exe
PID 4712 wrote to memory of 4212 N/A C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe C:\Windows\SysWOW64\winver.exe
PID 4212 wrote to memory of 3348 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 4212 wrote to memory of 2836 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\sihost.exe
PID 4212 wrote to memory of 2856 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\svchost.exe
PID 4212 wrote to memory of 2912 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhostw.exe
PID 4212 wrote to memory of 3348 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 4212 wrote to memory of 3456 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\svchost.exe
PID 4212 wrote to memory of 3716 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 4212 wrote to memory of 3804 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe

Processes

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe

"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca

C:\Windows\system32\DllHost.exe

C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\taskhostw.exe

taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc

C:\Windows\system32\sihost.exe

sihost.exe

C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.b48dc57cf2add016e8c28592e7ae4a40.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 126.24.238.8.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp

Files

memory/4712-0-0x00000000006C0000-0x00000000006C1000-memory.dmp

memory/4712-1-0x0000000002330000-0x0000000002D30000-memory.dmp

memory/3348-2-0x0000000000BA0000-0x0000000000BA6000-memory.dmp

memory/4212-5-0x0000000077A22000-0x0000000077A23000-memory.dmp

memory/4212-3-0x0000000002450000-0x0000000002456000-memory.dmp

memory/3348-4-0x0000000000BA0000-0x0000000000BA6000-memory.dmp

memory/3348-6-0x00007FF8887AD000-0x00007FF8887AE000-memory.dmp

memory/3348-7-0x00007FF888930000-0x00007FF888931000-memory.dmp

memory/3348-8-0x00007FF888940000-0x00007FF888941000-memory.dmp

memory/4712-9-0x0000000000400000-0x0000000000417000-memory.dmp

memory/4712-10-0x0000000002330000-0x0000000002D30000-memory.dmp

memory/4212-12-0x0000000002450000-0x0000000002456000-memory.dmp

memory/2856-14-0x0000000000B20000-0x0000000000B26000-memory.dmp

memory/2912-16-0x00000000006F0000-0x00000000006F6000-memory.dmp

memory/2836-15-0x0000000000F80000-0x0000000000F86000-memory.dmp

memory/3348-17-0x0000000000D80000-0x0000000000D86000-memory.dmp

memory/3456-19-0x0000000000AB0000-0x0000000000AB6000-memory.dmp

memory/3348-20-0x0000000000D80000-0x0000000000D86000-memory.dmp

memory/2856-18-0x0000000000B20000-0x0000000000B26000-memory.dmp