Malware Analysis Report

2024-10-19 13:24

Sample ID 240819-2tjrlszfph
Target e33c3707463d2ebddd209ac621160ee0N.exe
SHA256 761f7d0982840f0cfecc3100c9d367aebd4871792c4f3d38ca569f7486ba4448
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

761f7d0982840f0cfecc3100c9d367aebd4871792c4f3d38ca569f7486ba4448

Threat Level: Known bad

The file e33c3707463d2ebddd209ac621160ee0N.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Program crash

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SendNotifyMessage

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-19 22:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-19 22:52

Reported

2024-08-19 22:54

Platform

win7-20240708-en

Max time kernel

118s

Max time network

119s

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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\536CB0CA = "C:\\Users\\Admin\\AppData\\Roaming\\536CB0CA\\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\e33c3707463d2ebddd209ac621160ee0N.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

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 SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A
N/A N/A C:\Windows\Explorer.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\e33c3707463d2ebddd209ac621160ee0N.exe

"C:\Users\Admin\AppData\Local\Temp\e33c3707463d2ebddd209ac621160ee0N.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
US 8.8.8.8:53 ptuvwkjgwleu.ru udp
US 8.8.8.8:53 pxscpwnnqujq.com udp
US 8.8.8.8:53 pxscpwnnqujq.net udp
US 216.218.185.162:80 pxscpwnnqujq.net tcp

Files

memory/1240-6-0x0000000002D40000-0x0000000002D46000-memory.dmp

memory/2748-4-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1240-3-0x0000000002D40000-0x0000000002D46000-memory.dmp

memory/1240-1-0x0000000002D40000-0x0000000002D46000-memory.dmp

memory/2412-8-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2748-23-0x00000000001E0000-0x00000000001E6000-memory.dmp

memory/1384-20-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

memory/1240-17-0x0000000002D90000-0x0000000002D96000-memory.dmp

memory/1164-14-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1112-11-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1112-27-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1164-26-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1384-25-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

memory/1240-24-0x0000000002D90000-0x0000000002D96000-memory.dmp

memory/2748-29-0x00000000001E0000-0x00000000001E6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-19 22:52

Reported

2024-08-19 22:54

Platform

win10v2004-20240802-en

Max time kernel

117s

Max time network

123s

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:\Windows\SysWOW64\winver.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\e33c3707463d2ebddd209ac621160ee0N.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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\e33c3707463d2ebddd209ac621160ee0N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\e33c3707463d2ebddd209ac621160ee0N.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\e33c3707463d2ebddd209ac621160ee0N.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\e33c3707463d2ebddd209ac621160ee0N.exe

"C:\Users\Admin\AppData\Local\Temp\e33c3707463d2ebddd209ac621160ee0N.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 3564 -ip 3564

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3564 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1464 -ip 1464

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1464 -s 920

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/1464-1-0x00000000045B0000-0x0000000004C08000-memory.dmp

memory/1464-2-0x00000000044F0000-0x00000000044F1000-memory.dmp

memory/1464-3-0x00000000045B0000-0x0000000004C08000-memory.dmp

memory/1464-4-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/1464-5-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/1464-6-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/1464-7-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/1464-8-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/3472-10-0x0000000002460000-0x0000000002466000-memory.dmp

memory/3472-11-0x0000000002460000-0x0000000002466000-memory.dmp

memory/1464-12-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3472-16-0x0000000002470000-0x0000000002476000-memory.dmp

memory/1464-15-0x00000000057C0000-0x00000000061C0000-memory.dmp

memory/2640-19-0x0000000000CD0000-0x0000000000CD6000-memory.dmp

memory/1464-21-0x00000000057C0000-0x00000000061C0000-memory.dmp

memory/1464-24-0x00000000045B0000-0x0000000004C08000-memory.dmp

memory/2640-25-0x0000000000CD0000-0x0000000000CD6000-memory.dmp