Malware Analysis Report

2024-10-19 13:24

Sample ID 240818-tbmrjsthmj
Target 25b03bde81337503fbdf1f86ca463bb0N.exe
SHA256 9ddfe92b5d14d447eddf52d1a8b79d0e1bfc365d137d3ce8295f8a0c45e2b9ab
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

9ddfe92b5d14d447eddf52d1a8b79d0e1bfc365d137d3ce8295f8a0c45e2b9ab

Threat Level: Known bad

The file 25b03bde81337503fbdf1f86ca463bb0N.exe 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

Program crash

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 15:53

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-18 15:53

Reported

2024-08-18 15:55

Platform

win7-20240704-en

Max time kernel

119s

Max time network

120s

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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\7ADE90CF = "C:\\Users\\Admin\\AppData\\Roaming\\7ADE90CF\\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\25b03bde81337503fbdf1f86ca463bb0N.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

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\25b03bde81337503fbdf1f86ca463bb0N.exe

"C:\Users\Admin\AppData\Local\Temp\25b03bde81337503fbdf1f86ca463bb0N.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/2840-0-0x0000000000280000-0x0000000000282000-memory.dmp

memory/2900-3-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1228-2-0x0000000002B60000-0x0000000002B66000-memory.dmp

memory/1228-1-0x0000000002B60000-0x0000000002B66000-memory.dmp

memory/1228-5-0x0000000002B60000-0x0000000002B66000-memory.dmp

memory/2840-6-0x0000000002540000-0x0000000002F40000-memory.dmp

memory/1228-12-0x0000000077921000-0x0000000077922000-memory.dmp

memory/2900-11-0x00000000001E0000-0x00000000001E1000-memory.dmp

memory/2900-13-0x00000000778D0000-0x0000000077A79000-memory.dmp

memory/2900-10-0x0000000077ACF000-0x0000000077AD1000-memory.dmp

memory/2900-9-0x0000000077ACF000-0x0000000077AD0000-memory.dmp

memory/2900-8-0x0000000077AD0000-0x0000000077AD1000-memory.dmp

memory/2900-7-0x0000000000160000-0x0000000000166000-memory.dmp

memory/2840-14-0x0000000000400000-0x000000000041D000-memory.dmp

memory/772-25-0x0000000001C00000-0x0000000001C06000-memory.dmp

memory/1228-23-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/1168-20-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1116-17-0x0000000000210000-0x0000000000216000-memory.dmp

memory/1168-30-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1116-29-0x0000000077921000-0x0000000077922000-memory.dmp

memory/1116-28-0x0000000000210000-0x0000000000216000-memory.dmp

memory/1228-33-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/772-32-0x0000000077921000-0x0000000077922000-memory.dmp

memory/772-31-0x0000000001C00000-0x0000000001C06000-memory.dmp

memory/2840-34-0x0000000002540000-0x0000000002F40000-memory.dmp

memory/2900-36-0x0000000000160000-0x0000000000166000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 15:53

Reported

2024-08-18 15:55

Platform

win10v2004-20240802-en

Max time kernel

119s

Max time network

108s

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\25b03bde81337503fbdf1f86ca463bb0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\winver.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ C:\Windows\Explorer.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
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.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\25b03bde81337503fbdf1f86ca463bb0N.exe

"C:\Users\Admin\AppData\Local\Temp\25b03bde81337503fbdf1f86ca463bb0N.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1792 -ip 1792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 580

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.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 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/1940-0-0x00000000005D0000-0x00000000005D2000-memory.dmp

memory/3416-4-0x0000000002A80000-0x0000000002A86000-memory.dmp

memory/1792-2-0x0000000000720000-0x0000000000726000-memory.dmp

memory/3416-1-0x0000000002A80000-0x0000000002A86000-memory.dmp

memory/1940-5-0x0000000002310000-0x0000000002D10000-memory.dmp

memory/3416-8-0x00007FFA65DAD000-0x00007FFA65DAE000-memory.dmp

memory/1792-7-0x0000000077512000-0x0000000077513000-memory.dmp

memory/1792-6-0x0000000000720000-0x0000000000726000-memory.dmp

memory/1792-9-0x00007FFA65D10000-0x00007FFA65F05000-memory.dmp

memory/3416-10-0x00007FFA65F40000-0x00007FFA65F41000-memory.dmp

memory/1940-11-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2844-13-0x00000000008C0000-0x00000000008C6000-memory.dmp

memory/1940-14-0x0000000002310000-0x0000000002D10000-memory.dmp

memory/3416-15-0x00007FFA65F20000-0x00007FFA65F21000-memory.dmp

memory/1792-16-0x0000000000720000-0x0000000000726000-memory.dmp

memory/2844-18-0x00007FFA65F30000-0x00007FFA65F31000-memory.dmp