Malware Analysis Report

2025-01-19 07:39

Sample ID 241121-bzsnlaybrl
Target 5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.exe
SHA256 5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4
Tags
upx 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

5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4

Threat Level: Known bad

The file 5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.exe was found to be: Known bad.

Malicious Activity Summary

upx tinba banker discovery persistence trojan

Tinba / TinyBanker

Tinba family

Adds Run key to start application

UPX packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-21 01:35

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-21 01:35

Reported

2024-11-21 01:37

Platform

win7-20241010-en

Max time kernel

119s

Max time network

121s

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\E4D0363E = "C:\\Users\\Admin\\AppData\\Roaming\\E4D0363E\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.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

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\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.exe

"C:\Users\Admin\AppData\Local\Temp\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.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
SG 45.77.249.79:80 uyhgqunqkxnx.pw tcp
US 8.8.8.8:53 vcklmnnejwxx.pw udp
US 216.218.185.162:80 vcklmnnejwxx.pw tcp

Files

memory/1976-0-0x0000000000400000-0x0000000000418000-memory.dmp

memory/1976-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1200-4-0x0000000002AB0000-0x0000000002AB6000-memory.dmp

memory/1200-3-0x0000000002AB0000-0x0000000002AB6000-memory.dmp

memory/1200-2-0x0000000002AB0000-0x0000000002AB6000-memory.dmp

memory/2040-7-0x0000000077AC0000-0x0000000077AC1000-memory.dmp

memory/2040-11-0x00000000778C0000-0x0000000077A69000-memory.dmp

memory/1200-10-0x0000000077911000-0x0000000077912000-memory.dmp

memory/2040-9-0x0000000077ABF000-0x0000000077AC1000-memory.dmp

memory/2040-8-0x0000000077ABF000-0x0000000077AC0000-memory.dmp

memory/2040-6-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1976-5-0x0000000001CB0000-0x00000000026B0000-memory.dmp

memory/1976-12-0x0000000000400000-0x0000000000418000-memory.dmp

memory/1976-13-0x0000000001CB0000-0x00000000026B0000-memory.dmp

memory/1176-19-0x0000000000330000-0x0000000000336000-memory.dmp

memory/1632-23-0x0000000001C50000-0x0000000001C56000-memory.dmp

memory/1200-21-0x00000000026E0000-0x00000000026E6000-memory.dmp

memory/1200-29-0x00000000026E0000-0x00000000026E6000-memory.dmp

memory/1176-28-0x0000000000330000-0x0000000000336000-memory.dmp

memory/1104-27-0x0000000077911000-0x0000000077912000-memory.dmp

memory/1104-26-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1632-25-0x0000000077911000-0x0000000077912000-memory.dmp

memory/1632-24-0x0000000001C50000-0x0000000001C56000-memory.dmp

memory/2040-30-0x0000000000140000-0x0000000000146000-memory.dmp

memory/2040-35-0x0000000000190000-0x0000000000191000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-21 01:35

Reported

2024-11-21 01:37

Platform

win10v2004-20241007-en

Max time kernel

104s

Max time network

96s

Command Line

sihost.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\A68DBDC8 = "C:\\Users\\Admin\\AppData\\Roaming\\A68DBDC8\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.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

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

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.exe

"C:\Users\Admin\AppData\Local\Temp\5991ad27b5575c625d9ee1b6439f464a05780adc0032c80140658ae73693edf4.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1424 -ip 1424

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1424 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/824-0-0x0000000000400000-0x0000000000418000-memory.dmp

memory/824-1-0x00000000009C0000-0x00000000009C1000-memory.dmp

memory/3460-3-0x0000000000C00000-0x0000000000C06000-memory.dmp

memory/3460-2-0x0000000000C00000-0x0000000000C06000-memory.dmp

memory/824-4-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/1424-5-0x00000000778D2000-0x00000000778D3000-memory.dmp

memory/3460-6-0x00007FF83CF0D000-0x00007FF83CF0E000-memory.dmp

memory/1424-7-0x00007FF83CE70000-0x00007FF83D065000-memory.dmp

memory/824-10-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/824-9-0x0000000000400000-0x0000000000418000-memory.dmp

memory/1424-12-0x00000000011A0000-0x00000000011A6000-memory.dmp

memory/2672-14-0x0000000000E80000-0x0000000000E86000-memory.dmp

memory/1424-15-0x00000000011A0000-0x00000000011A6000-memory.dmp