Malware Analysis Report

2025-01-19 07:39

Sample ID 241120-fnkwtswnep
Target e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6
SHA256 e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6
Tags
upx tinba banker discovery 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

e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6

Threat Level: Known bad

The file e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6 was found to be: Known bad.

Malicious Activity Summary

upx tinba banker discovery persistence trojan

Tinba family

Tinba / TinyBanker

Adds Run key to start application

UPX packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-20 05:01

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-20 05:01

Reported

2024-11-20 05:03

Platform

win7-20241023-en

Max time kernel

149s

Max time network

151s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Tinba family

tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\AE67CF20 = "C:\\Users\\Admin\\AppData\\Roaming\\AE67CF20\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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 use of FindShellTrayWindow

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

Processes

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Windows\system32\Dwm.exe

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

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\DllHost.exe

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

C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.exe

"C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.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/2128-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2128-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1176-2-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/1176-3-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/1176-4-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/1176-10-0x0000000077CF1000-0x0000000077CF2000-memory.dmp

memory/2080-8-0x0000000077E9F000-0x0000000077EA0000-memory.dmp

memory/2080-7-0x0000000077EA0000-0x0000000077EA1000-memory.dmp

memory/2080-6-0x0000000000290000-0x0000000000296000-memory.dmp

memory/2080-9-0x0000000077E9F000-0x0000000077EA1000-memory.dmp

memory/2080-11-0x0000000077CA0000-0x0000000077E49000-memory.dmp

memory/2128-5-0x0000000001C30000-0x0000000002630000-memory.dmp

memory/2128-12-0x0000000000400000-0x000000000041E000-memory.dmp

memory/2128-13-0x0000000001C30000-0x0000000002630000-memory.dmp

memory/1040-24-0x0000000077CF1000-0x0000000077CF2000-memory.dmp

memory/1796-28-0x0000000077CF1000-0x0000000077CF2000-memory.dmp

memory/1796-29-0x0000000077CF1000-0x0000000077CF2000-memory.dmp

memory/1796-27-0x0000000001D90000-0x0000000001D96000-memory.dmp

memory/1040-23-0x0000000002010000-0x0000000002016000-memory.dmp

memory/1176-22-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/1096-20-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/1796-32-0x0000000001D90000-0x0000000001D96000-memory.dmp

memory/1176-31-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/1096-30-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/2080-33-0x0000000000290000-0x0000000000296000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-20 05:01

Reported

2024-11-20 05:04

Platform

win10v2004-20241007-en

Max time kernel

135s

Max time network

149s

Command Line

sihost.exe

Signatures

Tinba / TinyBanker

trojan banker tinba

Tinba family

tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B01DD998 = "C:\\Users\\Admin\\AppData\\Roaming\\B01DD998\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

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

Program crash

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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\winver.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege 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\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.exe

"C:\Users\Admin\AppData\Local\Temp\e38e5f1590d43fc212f4778fbcf0a795e8dda5b65b9cb5fea0524f9aae6ca3e6.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3440 -ip 3440

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3440 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4204-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/4204-1-0x00000000004A0000-0x00000000004A1000-memory.dmp

memory/3460-3-0x0000000000E30000-0x0000000000E36000-memory.dmp

memory/3460-2-0x0000000000E30000-0x0000000000E36000-memory.dmp

memory/4204-4-0x0000000002280000-0x0000000002C80000-memory.dmp

memory/3460-7-0x00007FF83CF0C000-0x00007FF83CF0D000-memory.dmp

memory/3460-6-0x00007FF83CF0D000-0x00007FF83CF0E000-memory.dmp

memory/3440-5-0x00000000778D2000-0x00000000778D3000-memory.dmp

memory/3440-8-0x00007FF83CE70000-0x00007FF83D065000-memory.dmp

memory/4204-10-0x0000000000400000-0x000000000041E000-memory.dmp

memory/3460-11-0x00007FF83D0A0000-0x00007FF83D0A1000-memory.dmp

memory/3440-13-0x0000000000FB0000-0x0000000000FB6000-memory.dmp

memory/2672-15-0x0000000000E80000-0x0000000000E86000-memory.dmp

memory/3440-16-0x0000000000FB0000-0x0000000000FB6000-memory.dmp