Malware Analysis Report

2024-09-09 17:04

Sample ID 240703-bmvbnazckh
Target a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936
SHA256 a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936

Threat Level: Known bad

The file a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936 was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Program crash

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-03 01:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-03 01:16

Reported

2024-07-03 01:18

Platform

win7-20240508-en

Max time kernel

148s

Max time network

150s

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-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\E45DC418 = "C:\\Users\\Admin\\AppData\\Roaming\\E45DC418\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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

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:\Users\Admin\AppData\Local\Temp\a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936.exe

"C:\Users\Admin\AppData\Local\Temp\a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp

Files

memory/1176-1-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/1176-6-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/2592-4-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1176-3-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/2140-8-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2592-20-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1176-17-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/1096-14-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1044-11-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

memory/1096-23-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1176-22-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/1044-21-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

memory/2592-25-0x0000000000410000-0x0000000000416000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-03 01:16

Reported

2024-07-03 01:18

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

93s

Command Line

sihost.exe

Signatures

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\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\a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936.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\a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936.exe

"C:\Users\Admin\AppData\Local\Temp\a504fe89ecdf6e90816e2b541c382acc216674b958c8759f494e0ce53bdba936.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 2444 -ip 2444

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2444 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4584 -ip 4584

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 876

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 24.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

memory/4584-1-0x00000000045D0000-0x0000000004C28000-memory.dmp

memory/4584-2-0x0000000002250000-0x0000000002251000-memory.dmp

memory/3480-4-0x0000000000C60000-0x0000000000C66000-memory.dmp

memory/3480-5-0x0000000000C60000-0x0000000000C66000-memory.dmp

memory/4584-6-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3480-10-0x0000000000C70000-0x0000000000C76000-memory.dmp

memory/4584-11-0x0000000005AE0000-0x00000000064E0000-memory.dmp

memory/2660-12-0x0000000000B90000-0x0000000000B96000-memory.dmp

memory/4584-13-0x0000000005AE0000-0x00000000064E0000-memory.dmp

memory/4584-17-0x00000000045D0000-0x0000000004C28000-memory.dmp

memory/2660-18-0x0000000000B90000-0x0000000000B96000-memory.dmp