Malware Analysis Report

2025-01-19 07:38

Sample ID 241103-zj4mxsvbql
Target 239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79
SHA256 239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79
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

239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79

Threat Level: Known bad

The file 239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79 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

System Location Discovery: System Language Discovery

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 20:45

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-03 20:45

Reported

2024-11-03 20:49

Platform

win7-20240708-en

Max time kernel

149s

Max time network

148s

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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\C850E9CB = "C:\\Users\\Admin\\AppData\\Roaming\\C850E9CB\\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:\Windows\SysWOW64\winver.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.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
N/A N/A C:\Windows\SysWOW64\winver.exe 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

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\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.exe

"C:\Users\Admin\AppData\Local\Temp\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 spaines.pw udp
US 216.218.185.162:80 spaines.pw tcp
US 8.8.8.8:53 uyhgqunqkxnx.pw udp
NL 178.62.201.34:80 uyhgqunqkxnx.pw tcp
US 8.8.8.8:53 vcklmnnejwxx.pw udp
US 216.218.185.162:80 vcklmnnejwxx.pw tcp

Files

memory/2468-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1196-2-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/1196-3-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/1196-1-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/2468-4-0x0000000001DA0000-0x00000000027A0000-memory.dmp

memory/1988-5-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1988-6-0x0000000077C50000-0x0000000077C51000-memory.dmp

memory/1988-7-0x0000000077C4F000-0x0000000077C50000-memory.dmp

memory/1988-8-0x0000000077C4F000-0x0000000077C51000-memory.dmp

memory/1196-9-0x0000000077AA1000-0x0000000077AA2000-memory.dmp

memory/1988-10-0x0000000077A50000-0x0000000077BF9000-memory.dmp

memory/2468-11-0x0000000000400000-0x0000000000414000-memory.dmp

memory/2468-12-0x0000000001DA0000-0x00000000027A0000-memory.dmp

memory/1192-23-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

memory/1196-20-0x00000000024C0000-0x00000000024C6000-memory.dmp

memory/1192-29-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

memory/1192-28-0x0000000077AA1000-0x0000000077AA2000-memory.dmp

memory/1196-27-0x00000000024C0000-0x00000000024C6000-memory.dmp

memory/1172-26-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1116-25-0x0000000077AA1000-0x0000000077AA2000-memory.dmp

memory/1116-24-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1172-18-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1988-30-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1988-35-0x0000000000240000-0x0000000000241000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 20:45

Reported

2024-11-03 20:48

Platform

win10v2004-20241007-en

Max time kernel

146s

Max time network

142s

Command Line

C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc

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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FF7813D3 = "C:\\Users\\Admin\\AppData\\Roaming\\FF7813D3\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

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\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\winver.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Windows\Explorer.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
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.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\svchost.exe

C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.exe

"C:\Users\Admin\AppData\Local\Temp\239300e9a7e6f2c54457a144f017711fab9f4f952e4e2153cd55df8bc087ff79.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4856 -ip 4856

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4856 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 178.11.19.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp

Files

memory/4968-0-0x00000000004F0000-0x00000000004F1000-memory.dmp

memory/3556-2-0x0000000001420000-0x0000000001426000-memory.dmp

memory/3556-1-0x0000000001420000-0x0000000001426000-memory.dmp

memory/4968-3-0x0000000002190000-0x0000000002B90000-memory.dmp

memory/4856-4-0x0000000077032000-0x0000000077033000-memory.dmp

memory/3556-5-0x00007FF9F7BED000-0x00007FF9F7BEE000-memory.dmp

memory/4856-6-0x00007FF9F7B50000-0x00007FF9F7D45000-memory.dmp

memory/4968-7-0x0000000000400000-0x0000000000414000-memory.dmp

memory/4968-8-0x0000000002190000-0x0000000002B90000-memory.dmp

memory/3556-9-0x00007FF9F7D80000-0x00007FF9F7D81000-memory.dmp

memory/3556-10-0x00007FF9F7D60000-0x00007FF9F7D61000-memory.dmp

memory/4856-12-0x0000000000CD0000-0x0000000000CD6000-memory.dmp

memory/2656-14-0x0000000000F20000-0x0000000000F26000-memory.dmp

memory/4856-15-0x0000000000CD0000-0x0000000000CD6000-memory.dmp