Malware Analysis Report

2024-10-19 13:24

Sample ID 240817-e7xjasxelh
Target bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163
SHA256 bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163
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

bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163

Threat Level: Known bad

The file bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163 was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Modifies data under HKEY_USERS

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-17 04:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-17 04:35

Reported

2024-08-17 04:38

Platform

win7-20240729-en

Max time kernel

148s

Max time network

148s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\E149A7E1 = "C:\\Users\\Admin\\AppData\\Roaming\\E149A7E1\\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\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2264 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe C:\Windows\SysWOW64\winver.exe
PID 2264 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe C:\Windows\SysWOW64\winver.exe
PID 2264 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe C:\Windows\SysWOW64\winver.exe
PID 2264 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe C:\Windows\SysWOW64\winver.exe
PID 2264 wrote to memory of 2764 N/A C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe C:\Windows\SysWOW64\winver.exe
PID 2764 wrote to memory of 1172 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2764 wrote to memory of 1056 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2764 wrote to memory of 1072 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2764 wrote to memory of 1172 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2764 wrote to memory of 1412 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2764 wrote to memory of 2264 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe

"C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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/1172-1-0x00000000029D0000-0x00000000029D6000-memory.dmp

memory/1172-6-0x00000000029D0000-0x00000000029D6000-memory.dmp

memory/2764-4-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1172-3-0x00000000029D0000-0x00000000029D6000-memory.dmp

memory/2264-8-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2764-25-0x0000000000250000-0x0000000000256000-memory.dmp

memory/1412-20-0x0000000001E60000-0x0000000001E66000-memory.dmp

memory/1172-17-0x0000000002A60000-0x0000000002A66000-memory.dmp

memory/1072-14-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1056-11-0x0000000000500000-0x0000000000506000-memory.dmp

memory/1056-29-0x0000000000500000-0x0000000000506000-memory.dmp

memory/1412-28-0x0000000001E60000-0x0000000001E66000-memory.dmp

memory/1172-27-0x0000000002A60000-0x0000000002A66000-memory.dmp

memory/1072-26-0x0000000000130000-0x0000000000136000-memory.dmp

memory/2764-31-0x0000000000250000-0x0000000000256000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 04:35

Reported

2024-08-17 04:38

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

142s

Command Line

sihost.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\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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

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

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\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.exe

"C:\Users\Admin\AppData\Local\Temp\bf46b4a6872225710d5fd4cfcc0fd3061a4bc9c45396cb03994aa08417453163.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 408 -p 2104 -ip 2104

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2104 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4588 -ip 4588

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 888

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4588-1-0x0000000004520000-0x0000000004B78000-memory.dmp

memory/4588-2-0x0000000003D10000-0x0000000003D11000-memory.dmp

memory/4588-3-0x0000000004520000-0x0000000004B78000-memory.dmp

memory/3464-5-0x0000000001170000-0x0000000001176000-memory.dmp

memory/3464-6-0x0000000001170000-0x0000000001176000-memory.dmp

memory/4588-7-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3464-11-0x00000000031B0000-0x00000000031B6000-memory.dmp

memory/4588-10-0x0000000005730000-0x0000000006130000-memory.dmp

memory/2644-14-0x0000000000EF0000-0x0000000000EF6000-memory.dmp

memory/4588-19-0x0000000004520000-0x0000000004B78000-memory.dmp

memory/4588-15-0x0000000005730000-0x0000000006130000-memory.dmp

memory/2644-20-0x0000000000EF0000-0x0000000000EF6000-memory.dmp