Malware Analysis Report

2025-01-19 07:38

Sample ID 241104-jn469awres
Target 744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N
SHA256 744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55
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

744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55

Threat Level: Known bad

The file 744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Tinba family

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Program crash

System Location Discovery: System Language Discovery

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Modifies data under HKEY_USERS

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 07:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 07:49

Reported

2024-11-04 07:52

Platform

win7-20240903-en

Max time kernel

119s

Max time network

126s

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\A8915169 = "C:\\Users\\Admin\\AppData\\Roaming\\A8915169\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.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

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 2228 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe C:\Windows\SysWOW64\winver.exe
PID 2228 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe C:\Windows\SysWOW64\winver.exe
PID 2228 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe C:\Windows\SysWOW64\winver.exe
PID 2228 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe C:\Windows\SysWOW64\winver.exe
PID 2228 wrote to memory of 2716 N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe C:\Windows\SysWOW64\winver.exe
PID 2716 wrote to memory of 1180 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2716 wrote to memory of 1068 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2716 wrote to memory of 1084 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2716 wrote to memory of 1180 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2716 wrote to memory of 620 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2716 wrote to memory of 2228 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.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\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe

"C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 216.218.185.162:80 elitiorecfreetoo.cc tcp

Files

memory/1180-1-0x0000000002160000-0x0000000002166000-memory.dmp

memory/1180-3-0x0000000002160000-0x0000000002166000-memory.dmp

memory/1180-6-0x0000000002160000-0x0000000002166000-memory.dmp

memory/2716-4-0x0000000000120000-0x0000000000126000-memory.dmp

memory/2228-8-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1068-11-0x0000000000120000-0x0000000000126000-memory.dmp

memory/2716-25-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/620-20-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

memory/1180-17-0x0000000002D30000-0x0000000002D36000-memory.dmp

memory/1084-14-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/1084-28-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/1180-27-0x0000000002D30000-0x0000000002D36000-memory.dmp

memory/1068-26-0x0000000000120000-0x0000000000126000-memory.dmp

memory/620-29-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

memory/2716-31-0x00000000001E0000-0x00000000001E6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-04 07:49

Reported

2024-11-04 07:52

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

106s

Command Line

C:\Windows\Explorer.EXE

Signatures

Enumerates physical storage devices

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\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\winver.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" C:\Windows\System32\svchost.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.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
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege N/A C:\Windows\Explorer.EXE N/A
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
N/A N/A C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe N/A

Suspicious use of UnmapMainImage

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

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe

"C:\Users\Admin\AppData\Local\Temp\744a8c8b8564276eebb587a8ebfd7783bedb3589e0b6698b4a74c60d522a0a55N.exe"

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4344 -ip 4344

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3288 -ip 3288

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3288 -s 952

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/3288-1-0x00000000046F0000-0x0000000004D48000-memory.dmp

memory/3288-2-0x0000000003E10000-0x0000000003E11000-memory.dmp

memory/3288-3-0x0000000003E10000-0x0000000003E11000-memory.dmp

memory/3288-4-0x0000000003E10000-0x0000000003E11000-memory.dmp

memory/3472-6-0x00000000029E0000-0x00000000029E6000-memory.dmp

memory/3472-7-0x00000000029E0000-0x00000000029E6000-memory.dmp

memory/3288-8-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3472-11-0x0000000003090000-0x0000000003096000-memory.dmp

memory/3288-14-0x00000000046F0000-0x0000000004D48000-memory.dmp