Malware Analysis Report

2025-01-19 07:40

Sample ID 241119-nm2f7avpa1
Target e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe
SHA256 e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99
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

e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99

Threat Level: Known bad

The file e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba family

Tinba / TinyBanker

Adds Run key to start application

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-19 11:31

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-19 11:31

Reported

2024-11-19 11:33

Platform

win7-20241023-en

Max time kernel

120s

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-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Windows\CurrentVersion\Run\CC173C59 = "C:\\Users\\Admin\\AppData\\Roaming\\CC173C59\\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:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.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

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 2132 wrote to memory of 2316 N/A C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe C:\Windows\SysWOW64\winver.exe
PID 2132 wrote to memory of 2316 N/A C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe C:\Windows\SysWOW64\winver.exe
PID 2132 wrote to memory of 2316 N/A C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe C:\Windows\SysWOW64\winver.exe
PID 2132 wrote to memory of 2316 N/A C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe C:\Windows\SysWOW64\winver.exe
PID 2132 wrote to memory of 2316 N/A C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe C:\Windows\SysWOW64\winver.exe
PID 2316 wrote to memory of 1216 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2316 wrote to memory of 1112 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2316 wrote to memory of 1176 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2316 wrote to memory of 1216 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2316 wrote to memory of 1348 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2316 wrote to memory of 2132 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.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\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe

"C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 yxjsibeugmmj.com udp
US 216.218.185.162:80 yxjsibeugmmj.com tcp

Files

memory/2132-0-0x00000000003C0000-0x00000000003C2000-memory.dmp

memory/2316-3-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1216-2-0x0000000002520000-0x0000000002526000-memory.dmp

memory/2132-5-0x0000000002400000-0x0000000002E00000-memory.dmp

memory/1216-1-0x0000000002520000-0x0000000002526000-memory.dmp

memory/1216-6-0x0000000002520000-0x0000000002526000-memory.dmp

memory/1216-12-0x0000000077931000-0x0000000077932000-memory.dmp

memory/2316-13-0x00000000778E0000-0x0000000077A89000-memory.dmp

memory/2316-7-0x0000000000120000-0x0000000000126000-memory.dmp

memory/2316-11-0x0000000000160000-0x0000000000161000-memory.dmp

memory/2316-10-0x0000000077ADF000-0x0000000077AE1000-memory.dmp

memory/2316-9-0x0000000077ADF000-0x0000000077AE0000-memory.dmp

memory/2316-8-0x0000000077AE0000-0x0000000077AE1000-memory.dmp

memory/2132-14-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1348-23-0x0000000001C80000-0x0000000001C86000-memory.dmp

memory/1216-21-0x0000000002530000-0x0000000002536000-memory.dmp

memory/1176-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1112-16-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1216-28-0x0000000002530000-0x0000000002536000-memory.dmp

memory/2132-29-0x0000000002400000-0x0000000002E00000-memory.dmp

memory/1348-31-0x0000000001C80000-0x0000000001C86000-memory.dmp

memory/1348-32-0x0000000077931000-0x0000000077932000-memory.dmp

memory/1112-30-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1176-27-0x0000000077931000-0x0000000077932000-memory.dmp

memory/1176-26-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/2316-34-0x0000000000120000-0x0000000000126000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-19 11:31

Reported

2024-11-19 11:33

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

96s

Command Line

sihost.exe

Signatures

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\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.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

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\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe

"C:\Users\Admin\AppData\Local\Temp\e3a03e2424b71c6e6ae107b67e9525c7d9d404686f59ad0e295606d380db8c99.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 372 -ip 372

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 372 -s 632

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/1436-0-0x0000000000470000-0x0000000000472000-memory.dmp

memory/3520-1-0x0000000002B00000-0x0000000002B06000-memory.dmp

memory/3520-4-0x0000000002B00000-0x0000000002B06000-memory.dmp

memory/372-2-0x0000000000CA0000-0x0000000000CA6000-memory.dmp

memory/1436-5-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/3520-7-0x00007FF9C32CD000-0x00007FF9C32CE000-memory.dmp

memory/372-6-0x0000000076FE2000-0x0000000076FE3000-memory.dmp

memory/372-8-0x00007FF9C3230000-0x00007FF9C3425000-memory.dmp

memory/1436-9-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2496-10-0x0000000000340000-0x0000000000346000-memory.dmp

memory/2496-11-0x0000000000340000-0x0000000000346000-memory.dmp

memory/1436-12-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/3520-13-0x00007FF9C3460000-0x00007FF9C3461000-memory.dmp

memory/372-14-0x0000000000CA0000-0x0000000000CA6000-memory.dmp

memory/2496-16-0x00007FF9C3450000-0x00007FF9C3451000-memory.dmp