Malware Analysis Report

2024-09-09 17:07

Sample ID 240709-1611zs1bmb
Target 50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b
SHA256 50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b
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

50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b

Threat Level: Known bad

The file 50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Program crash

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-09 22:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-09 22:16

Reported

2024-07-09 22:19

Platform

win7-20240704-en

Max time kernel

149s

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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\A2934BA0 = "C:\\Users\\Admin\\AppData\\Roaming\\A2934BA0\\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
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\50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b.exe

"C:\Users\Admin\AppData\Local\Temp\50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b.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
US 8.8.8.8:53 pxscpwnnqujq.in udp
US 216.218.185.162:80 pxscpwnnqujq.in tcp
US 8.8.8.8:53 pxscpwnnqujq.ru udp
US 8.8.8.8:53 pvmjyqwwugwx.com udp
US 8.8.8.8:53 pvmjyqwwugwx.net udp
US 8.8.8.8:53 pvmjyqwwugwx.in udp
US 216.218.185.162:80 pvmjyqwwugwx.in tcp
US 8.8.8.8:53 pvmjyqwwugwx.ru udp
US 8.8.8.8:53 pirckxungwkv.com udp
US 216.218.185.162:80 pirckxungwkv.com tcp
US 8.8.8.8:53 pirckxungwkv.net udp
US 8.8.8.8:53 pirckxungwkv.in udp
US 216.218.185.162:80 pirckxungwkv.in tcp

Files

memory/1200-1-0x0000000002E30000-0x0000000002E36000-memory.dmp

memory/2932-4-0x00000000000F0000-0x00000000000F6000-memory.dmp

memory/1200-3-0x0000000002E30000-0x0000000002E36000-memory.dmp

memory/1200-6-0x0000000002E30000-0x0000000002E36000-memory.dmp

memory/2092-8-0x0000000000400000-0x000000000043F000-memory.dmp

memory/2040-20-0x0000000001E30000-0x0000000001E36000-memory.dmp

memory/2932-23-0x00000000003D0000-0x00000000003D6000-memory.dmp

memory/1200-17-0x0000000002E40000-0x0000000002E46000-memory.dmp

memory/1172-14-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1112-11-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1172-26-0x0000000000140000-0x0000000000146000-memory.dmp

memory/2040-27-0x0000000001E30000-0x0000000001E36000-memory.dmp

memory/1200-25-0x0000000002E40000-0x0000000002E46000-memory.dmp

memory/1112-24-0x0000000002090000-0x0000000002096000-memory.dmp

memory/2932-29-0x00000000003D0000-0x00000000003D6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-09 22:16

Reported

2024-07-09 22:19

Platform

win10v2004-20240709-en

Max time kernel

146s

Max time network

122s

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\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\50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b.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\50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b.exe

"C:\Users\Admin\AppData\Local\Temp\50b88053e9c17bea52e00af9bd13b0f0eae931d16428b849b64c6d736930e79b.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 3916 -ip 3916

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3916 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 1372 -ip 1372

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1372 -s 888

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 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp

Files

memory/1372-1-0x00000000046E0000-0x0000000004D38000-memory.dmp

memory/1372-2-0x0000000003DC0000-0x0000000003DC1000-memory.dmp

memory/3596-4-0x0000000001070000-0x0000000001076000-memory.dmp

memory/3596-5-0x0000000001070000-0x0000000001076000-memory.dmp

memory/1372-6-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3596-10-0x00000000030B0000-0x00000000030B6000-memory.dmp

memory/1372-9-0x00000000058F0000-0x00000000062F0000-memory.dmp

memory/2572-12-0x0000000000530000-0x0000000000536000-memory.dmp

memory/1372-14-0x00000000058F0000-0x00000000062F0000-memory.dmp

memory/1372-17-0x00000000046E0000-0x0000000004D38000-memory.dmp

memory/2572-18-0x0000000000530000-0x0000000000536000-memory.dmp