Malware Analysis Report

2025-01-19 07:41

Sample ID 241103-dbtbbstalj
Target ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2
SHA256 ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2
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

ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2

Threat Level: Known bad

The file ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2 was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Tinba family

Adds Run key to start application

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of UnmapMainImage

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 02:50

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-03 02:50

Reported

2024-11-03 02:53

Platform

win7-20240729-en

Max time kernel

150s

Max time network

155s

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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\43A976BD = "C:\\Users\\Admin\\AppData\\Roaming\\43A976BD\\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\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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 2604 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe C:\Windows\SysWOW64\winver.exe
PID 2604 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe C:\Windows\SysWOW64\winver.exe
PID 2604 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe C:\Windows\SysWOW64\winver.exe
PID 2604 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe C:\Windows\SysWOW64\winver.exe
PID 2604 wrote to memory of 3008 N/A C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe C:\Windows\SysWOW64\winver.exe
PID 3008 wrote to memory of 1204 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 3008 wrote to memory of 1116 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 3008 wrote to memory of 1164 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 3008 wrote to memory of 1204 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 3008 wrote to memory of 324 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 3008 wrote to memory of 2604 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe

"C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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/1204-3-0x0000000002B70000-0x0000000002B76000-memory.dmp

memory/1204-1-0x0000000002B70000-0x0000000002B76000-memory.dmp

memory/1204-6-0x0000000002B70000-0x0000000002B76000-memory.dmp

memory/3008-4-0x00000000004B0000-0x00000000004B6000-memory.dmp

memory/2604-8-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3008-25-0x0000000000700000-0x0000000000706000-memory.dmp

memory/324-20-0x0000000000370000-0x0000000000376000-memory.dmp

memory/1204-17-0x0000000002B80000-0x0000000002B86000-memory.dmp

memory/1164-14-0x0000000001F20000-0x0000000001F26000-memory.dmp

memory/1116-11-0x0000000002000000-0x0000000002006000-memory.dmp

memory/1164-29-0x0000000001F20000-0x0000000001F26000-memory.dmp

memory/1116-28-0x0000000002000000-0x0000000002006000-memory.dmp

memory/324-26-0x0000000000370000-0x0000000000376000-memory.dmp

memory/1204-27-0x0000000002B80000-0x0000000002B86000-memory.dmp

memory/3008-31-0x0000000000700000-0x0000000000706000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 02:50

Reported

2024-11-03 02:53

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

151s

Command Line

sihost.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\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.exe

"C:\Users\Admin\AppData\Local\Temp\ad984b54f9ed96c910ec039efeaa6eb9d80f84b756756317fa49c3c81f444db2.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 408 -p 448 -ip 448

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 448 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1352 -ip 1352

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1352 -s 888

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.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 8.8.8.8:53 103.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.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 95.16.208.104.in-addr.arpa udp

Files

memory/1352-1-0x00000000045A0000-0x0000000004BF8000-memory.dmp

memory/1352-2-0x0000000003D40000-0x0000000003D41000-memory.dmp

memory/3528-4-0x0000000001070000-0x0000000001076000-memory.dmp

memory/3528-5-0x0000000001070000-0x0000000001076000-memory.dmp

memory/1352-6-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3528-11-0x00000000028F0000-0x00000000028F6000-memory.dmp

memory/1352-10-0x00000000057B0000-0x00000000061B0000-memory.dmp

memory/2720-13-0x00000000007C0000-0x00000000007C6000-memory.dmp

memory/1352-15-0x00000000057B0000-0x00000000061B0000-memory.dmp

memory/1352-18-0x00000000045A0000-0x0000000004BF8000-memory.dmp

memory/2720-19-0x00000000007C0000-0x00000000007C6000-memory.dmp