Malware Analysis Report

2025-01-19 07:40

Sample ID 241119-z25ypssnbz
Target f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe
SHA256 f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1
Tags
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

f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1

Threat Level: Known bad

The file f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Tinba family

Adds Run key to start application

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-19 21:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-19 21:13

Reported

2024-11-19 21:15

Platform

win7-20241010-en

Max time kernel

120s

Max time network

120s

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\83F8DD32 = "C:\\Users\\Admin\\AppData\\Roaming\\83F8DD32\\bin.exe" C:\Windows\SysWOW64\winver.exe 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\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.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

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 2332 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe C:\Windows\SysWOW64\winver.exe
PID 2332 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe C:\Windows\SysWOW64\winver.exe
PID 2332 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe C:\Windows\SysWOW64\winver.exe
PID 2332 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe C:\Windows\SysWOW64\winver.exe
PID 2332 wrote to memory of 2536 N/A C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe C:\Windows\SysWOW64\winver.exe
PID 2536 wrote to memory of 1368 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2536 wrote to memory of 1204 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2536 wrote to memory of 1312 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2536 wrote to memory of 1368 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2536 wrote to memory of 620 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2536 wrote to memory of 2332 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe

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\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe

"C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 yxjsibeugmmj.com udp
US 216.218.185.162:80 yxjsibeugmmj.com tcp

Files

memory/2332-0-0x00000000002C0000-0x00000000002C2000-memory.dmp

memory/2536-3-0x0000000000090000-0x0000000000096000-memory.dmp

memory/1368-5-0x0000000002A10000-0x0000000002A16000-memory.dmp

memory/1368-2-0x0000000002A10000-0x0000000002A16000-memory.dmp

memory/1368-1-0x0000000002A10000-0x0000000002A16000-memory.dmp

memory/2332-6-0x00000000022D0000-0x0000000002CD0000-memory.dmp

memory/2536-13-0x0000000077280000-0x0000000077429000-memory.dmp

memory/1368-12-0x00000000772D1000-0x00000000772D2000-memory.dmp

memory/2536-11-0x0000000000180000-0x0000000000181000-memory.dmp

memory/2536-10-0x000000007747F000-0x0000000077481000-memory.dmp

memory/2536-9-0x000000007747F000-0x0000000077480000-memory.dmp

memory/2536-8-0x0000000077480000-0x0000000077481000-memory.dmp

memory/2536-7-0x0000000000090000-0x0000000000096000-memory.dmp

memory/2332-14-0x0000000000400000-0x000000000041D000-memory.dmp

memory/620-23-0x0000000001E20000-0x0000000001E26000-memory.dmp

memory/1368-21-0x0000000002A20000-0x0000000002A26000-memory.dmp

memory/1312-18-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1204-16-0x0000000001B40000-0x0000000001B46000-memory.dmp

memory/620-27-0x0000000001E20000-0x0000000001E26000-memory.dmp

memory/2332-32-0x00000000022D0000-0x0000000002CD0000-memory.dmp

memory/1312-31-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1204-30-0x00000000772D1000-0x00000000772D2000-memory.dmp

memory/1204-29-0x0000000001B40000-0x0000000001B46000-memory.dmp

memory/1368-26-0x0000000002A20000-0x0000000002A26000-memory.dmp

memory/620-28-0x00000000772D1000-0x00000000772D2000-memory.dmp

memory/2536-38-0x0000000000090000-0x0000000000096000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-19 21:13

Reported

2024-11-19 21:16

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

102s

Command Line

sihost.exe

Signatures

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:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.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

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\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe

"C:\Users\Admin\AppData\Local\Temp\f5dc98192c45cd8d9afbc0f1e59ea93164aebab8aa7a3dfc0f1a78d1956db8e1N.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4504 -ip 4504

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4504 -s 640

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 www.google.com udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 180.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4740-0-0x0000000000460000-0x0000000000462000-memory.dmp

memory/4504-2-0x00000000028E0000-0x00000000028E6000-memory.dmp

memory/3432-1-0x0000000000C70000-0x0000000000C76000-memory.dmp

memory/3432-4-0x0000000000C70000-0x0000000000C76000-memory.dmp

memory/4740-5-0x00000000023B0000-0x0000000002DB0000-memory.dmp

memory/3432-7-0x00007FFD9DC2D000-0x00007FFD9DC2E000-memory.dmp

memory/4504-6-0x0000000077172000-0x0000000077173000-memory.dmp

memory/4504-8-0x00007FFD9DB90000-0x00007FFD9DD85000-memory.dmp

memory/2636-10-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

memory/4740-11-0x00000000023B0000-0x0000000002DB0000-memory.dmp

memory/4740-9-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2636-12-0x0000000000FF0000-0x0000000000FF6000-memory.dmp

memory/3432-13-0x00007FFD9DDC0000-0x00007FFD9DDC1000-memory.dmp

memory/4504-14-0x00000000028E0000-0x00000000028E6000-memory.dmp