Malware Analysis Report

2024-10-19 13:24

Sample ID 240825-a9cvfszamb
Target 807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef
SHA256 807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef
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

807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef

Threat Level: Known bad

The file 807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Adds Run key to start application

System Location Discovery: System Language Discovery

Unsigned PE

Enumerates physical storage devices

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-25 00:54

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-25 00:54

Reported

2024-08-25 00:56

Platform

win7-20240704-en

Max time kernel

148s

Max time network

147s

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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\7754BB44 = "C:\\Users\\Admin\\AppData\\Roaming\\7754BB44\\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\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.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 2392 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe C:\Windows\SysWOW64\winver.exe
PID 2392 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe C:\Windows\SysWOW64\winver.exe
PID 2392 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe C:\Windows\SysWOW64\winver.exe
PID 2392 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe C:\Windows\SysWOW64\winver.exe
PID 2392 wrote to memory of 2788 N/A C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe C:\Windows\SysWOW64\winver.exe
PID 2788 wrote to memory of 1276 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2788 wrote to memory of 1120 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2788 wrote to memory of 1228 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2788 wrote to memory of 1276 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2788 wrote to memory of 628 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 2788 wrote to memory of 2392 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.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\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe

"C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.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
US 8.8.8.8:53 ljjskttqximu.com udp
US 8.8.8.8:53 ljjskttqximu.net udp
US 8.8.8.8:53 ljjskttqximu.in udp
US 216.218.185.162:80 ljjskttqximu.in tcp
US 8.8.8.8:53 ljjskttqximu.ru udp
US 162.249.66.138:80 ljjskttqximu.ru tcp
US 8.8.8.8:53 fovcpylsiqvv.com udp
US 216.218.185.162:80 fovcpylsiqvv.com tcp
US 8.8.8.8:53 fovcpylsiqvv.net udp
US 8.8.8.8:53 fovcpylsiqvv.in udp
US 216.218.185.162:80 fovcpylsiqvv.in tcp
US 8.8.8.8:53 fovcpylsiqvv.ru udp
US 8.8.8.8:53 ptuvwkjgwleu.com udp
US 8.8.8.8:53 ptuvwkjgwleu.net udp
US 8.8.8.8:53 ptuvwkjgwleu.in udp
US 216.218.185.162:80 ptuvwkjgwleu.in tcp

Files

memory/1276-3-0x0000000002600000-0x0000000002606000-memory.dmp

memory/1276-6-0x0000000002600000-0x0000000002606000-memory.dmp

memory/2788-4-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1276-1-0x0000000002600000-0x0000000002606000-memory.dmp

memory/2788-23-0x0000000000260000-0x0000000000266000-memory.dmp

memory/628-18-0x0000000002160000-0x0000000002166000-memory.dmp

memory/1276-15-0x0000000002D90000-0x0000000002D96000-memory.dmp

memory/1228-12-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1120-9-0x0000000002030000-0x0000000002036000-memory.dmp

memory/2392-25-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1120-28-0x0000000002030000-0x0000000002036000-memory.dmp

memory/1228-29-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/628-26-0x0000000002160000-0x0000000002166000-memory.dmp

memory/1276-27-0x0000000002D90000-0x0000000002D96000-memory.dmp

memory/2788-31-0x0000000000260000-0x0000000000266000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-25 00:54

Reported

2024-08-25 00:56

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

150s

Command Line

C:\Windows\Explorer.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\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.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\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.exe

"C:\Users\Admin\AppData\Local\Temp\807fab6486eea4b2097d82f21a0eb30d9b1fcf0a9781687f6fef8690855919ef.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 420 -p 3812 -ip 3812

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3812 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4808 -ip 4808

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4808 -s 860

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.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 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4808-1-0x00000000046E0000-0x0000000004D38000-memory.dmp

memory/4808-2-0x0000000003E80000-0x0000000003E81000-memory.dmp

memory/4808-3-0x00000000046E0000-0x0000000004D38000-memory.dmp

memory/4808-4-0x0000000003E80000-0x0000000003E81000-memory.dmp

memory/4808-5-0x0000000003E80000-0x0000000003E81000-memory.dmp

memory/3360-7-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/3360-8-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/4808-9-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3360-13-0x0000000002D60000-0x0000000002D66000-memory.dmp

memory/4808-16-0x00000000046E0000-0x0000000004D38000-memory.dmp