Malware Analysis Report

2024-10-19 13:24

Sample ID 240817-y82n7averb
Target 2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e
SHA256 2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e
Tags
discovery tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e

Threat Level: Known bad

The file 2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e was found to be: Known bad.

Malicious Activity Summary

discovery tinba banker 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 use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Modifies data under HKEY_USERS

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-17 20:28

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-17 20:28

Reported

2024-08-17 20:30

Platform

win10v2004-20240802-en

Max time kernel

147s

Max time network

141s

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\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe

"C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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 420 -p 1940 -ip 1940

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1940 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 2628 -ip 2628

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2628 -s 864

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 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 150.171.27.10:443 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 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/2628-1-0x0000000004630000-0x0000000004C88000-memory.dmp

memory/2628-2-0x0000000002560000-0x0000000002561000-memory.dmp

memory/2628-3-0x0000000004630000-0x0000000004C88000-memory.dmp

memory/2628-4-0x0000000002560000-0x0000000002561000-memory.dmp

memory/2628-5-0x0000000002560000-0x0000000002561000-memory.dmp

memory/3444-7-0x0000000001320000-0x0000000001326000-memory.dmp

memory/3444-8-0x0000000001320000-0x0000000001326000-memory.dmp

memory/2628-9-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3444-13-0x00000000031C0000-0x00000000031C6000-memory.dmp

memory/2628-16-0x0000000004630000-0x0000000004C88000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-17 20:28

Reported

2024-08-17 20:30

Platform

win7-20240705-en

Max time kernel

148s

Max time network

149s

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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\720EDBFE = "C:\\Users\\Admin\\AppData\\Roaming\\720EDBFE\\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\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1984 wrote to memory of 2404 N/A C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe C:\Windows\SysWOW64\winver.exe
PID 1984 wrote to memory of 2404 N/A C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe C:\Windows\SysWOW64\winver.exe
PID 1984 wrote to memory of 2404 N/A C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe C:\Windows\SysWOW64\winver.exe
PID 1984 wrote to memory of 2404 N/A C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe C:\Windows\SysWOW64\winver.exe
PID 1984 wrote to memory of 2404 N/A C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe C:\Windows\SysWOW64\winver.exe
PID 2404 wrote to memory of 1228 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2404 wrote to memory of 1116 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2404 wrote to memory of 1172 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2404 wrote to memory of 1228 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2404 wrote to memory of 1368 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2404 wrote to memory of 1984 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.exe

"C:\Users\Admin\AppData\Local\Temp\2ea70b430ce38c5fc816e20488189564b3b5c28bb74a5db05ca7c358ce7f449e.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/1228-6-0x0000000002E60000-0x0000000002E66000-memory.dmp

memory/2404-4-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1228-3-0x0000000002E60000-0x0000000002E66000-memory.dmp

memory/1228-1-0x0000000002E60000-0x0000000002E66000-memory.dmp

memory/1984-25-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2404-23-0x00000000003E0000-0x00000000003E6000-memory.dmp

memory/1368-18-0x0000000001D20000-0x0000000001D26000-memory.dmp

memory/1228-15-0x0000000002E70000-0x0000000002E76000-memory.dmp

memory/1172-12-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1116-9-0x0000000000200000-0x0000000000206000-memory.dmp

memory/1116-29-0x0000000000200000-0x0000000000206000-memory.dmp

memory/1228-27-0x0000000002E70000-0x0000000002E76000-memory.dmp

memory/1172-28-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1368-26-0x0000000001D20000-0x0000000001D26000-memory.dmp

memory/2404-31-0x00000000003E0000-0x00000000003E6000-memory.dmp