Malware Analysis Report

2024-09-09 17:07

Sample ID 240710-ypmqxsxcjk
Target 1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723
SHA256 1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723

Threat Level: Known bad

The file 1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723 was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of FindShellTrayWindow

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-10 19:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-10 19:57

Reported

2024-07-10 20:00

Platform

win7-20240704-en

Max time kernel

150s

Max time network

152s

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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\2EB33889 = "C:\\Users\\Admin\\AppData\\Roaming\\2EB33889\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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

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 1944 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe C:\Windows\SysWOW64\winver.exe
PID 1944 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe C:\Windows\SysWOW64\winver.exe
PID 1944 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe C:\Windows\SysWOW64\winver.exe
PID 1944 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe C:\Windows\SysWOW64\winver.exe
PID 1944 wrote to memory of 2804 N/A C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe C:\Windows\SysWOW64\winver.exe
PID 2804 wrote to memory of 1384 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2804 wrote to memory of 1232 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2804 wrote to memory of 1328 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2804 wrote to memory of 1384 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2804 wrote to memory of 1240 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2804 wrote to memory of 1944 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.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\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe

"C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.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/1384-1-0x0000000002610000-0x0000000002616000-memory.dmp

memory/2804-4-0x0000000000140000-0x0000000000146000-memory.dmp

memory/2804-5-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1384-6-0x0000000002610000-0x0000000002616000-memory.dmp

memory/1384-3-0x0000000002610000-0x0000000002616000-memory.dmp

memory/1232-9-0x00000000003A0000-0x00000000003A6000-memory.dmp

memory/2804-23-0x0000000000270000-0x0000000000276000-memory.dmp

memory/1240-18-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

memory/1384-15-0x0000000002660000-0x0000000002666000-memory.dmp

memory/1328-12-0x00000000019C0000-0x00000000019C6000-memory.dmp

memory/1944-25-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1240-26-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

memory/1384-28-0x0000000002660000-0x0000000002666000-memory.dmp

memory/1232-29-0x00000000003A0000-0x00000000003A6000-memory.dmp

memory/1328-27-0x00000000019C0000-0x00000000019C6000-memory.dmp

memory/2804-31-0x0000000000270000-0x0000000000276000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-10 19:57

Reported

2024-07-10 20:00

Platform

win10v2004-20240709-en

Max time kernel

130s

Max time network

123s

Command Line

C:\Windows\Explorer.EXE

Signatures

Enumerates physical storage devices

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\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.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\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.exe

"C:\Users\Admin\AppData\Local\Temp\1f6e686bc0a76bab458cfec64a150a325dbf50109315cbea43e4612d2b222723.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 416 -p 4924 -ip 4924

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 304

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1124 -ip 1124

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1124 -s 728

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 73.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 100.58.20.217.in-addr.arpa udp

Files

memory/1124-1-0x0000000004560000-0x0000000004BB8000-memory.dmp

memory/1124-2-0x0000000003CD0000-0x0000000003CD1000-memory.dmp

memory/3468-5-0x0000000001260000-0x0000000001266000-memory.dmp

memory/3468-4-0x0000000001260000-0x0000000001266000-memory.dmp

memory/1124-6-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3468-9-0x0000000001450000-0x0000000001456000-memory.dmp

memory/1124-12-0x0000000004560000-0x0000000004BB8000-memory.dmp