Malware Analysis Report

2024-10-19 13:24

Sample ID 240820-zl1ztawfpl
Target 1edfcd0d4fc5c270ea507d2d28913ad0N.exe
SHA256 0cbd571f2cbb15bcc922a2fef69b5de0fcce818df2835deeebffcd0481ce4832
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

0cbd571f2cbb15bcc922a2fef69b5de0fcce818df2835deeebffcd0481ce4832

Threat Level: Known bad

The file 1edfcd0d4fc5c270ea507d2d28913ad0N.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

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Program crash

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

Suspicious use of SendNotifyMessage

Modifies data under HKEY_USERS

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-20 20:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-20 20:49

Reported

2024-08-20 20:51

Platform

win7-20240708-en

Max time kernel

120s

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-1-5-21-2958949473-3205530200-1453100116-1000\Software\Microsoft\Windows\CurrentVersion\Run\62A19CEF = "C:\\Users\\Admin\\AppData\\Roaming\\62A19CEF\\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\1edfcd0d4fc5c270ea507d2d28913ad0N.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

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\1edfcd0d4fc5c270ea507d2d28913ad0N.exe

"C:\Users\Admin\AppData\Local\Temp\1edfcd0d4fc5c270ea507d2d28913ad0N.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/1200-1-0x0000000003190000-0x0000000003196000-memory.dmp

memory/1200-6-0x0000000003190000-0x0000000003196000-memory.dmp

memory/2716-4-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1200-3-0x0000000003190000-0x0000000003196000-memory.dmp

memory/1164-12-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1100-9-0x0000000001F10000-0x0000000001F16000-memory.dmp

memory/2716-23-0x0000000000210000-0x0000000000216000-memory.dmp

memory/1316-18-0x0000000001F30000-0x0000000001F36000-memory.dmp

memory/1200-15-0x00000000031B0000-0x00000000031B6000-memory.dmp

memory/2260-25-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1164-29-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1100-28-0x0000000001F10000-0x0000000001F16000-memory.dmp

memory/1200-27-0x00000000031B0000-0x00000000031B6000-memory.dmp

memory/1316-26-0x0000000001F30000-0x0000000001F36000-memory.dmp

memory/2716-31-0x0000000000210000-0x0000000000216000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-20 20:49

Reported

2024-08-20 20:51

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

98s

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\1edfcd0d4fc5c270ea507d2d28913ad0N.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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.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
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
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\1edfcd0d4fc5c270ea507d2d28913ad0N.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\1edfcd0d4fc5c270ea507d2d28913ad0N.exe

"C:\Users\Admin\AppData\Local\Temp\1edfcd0d4fc5c270ea507d2d28913ad0N.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 204 -p 4056 -ip 4056

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4056 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 500 -p 3172 -ip 3172

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3172 -s 872

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 18.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 37.56.20.217.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 150.171.28.10:443 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 26.35.223.20.in-addr.arpa udp

Files

memory/3172-1-0x0000000004660000-0x0000000004CB8000-memory.dmp

memory/3172-2-0x0000000003C80000-0x0000000003C81000-memory.dmp

memory/3172-3-0x0000000004660000-0x0000000004CB8000-memory.dmp

memory/3436-5-0x00000000011F0000-0x00000000011F6000-memory.dmp

memory/3436-6-0x00000000011F0000-0x00000000011F6000-memory.dmp

memory/3172-7-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3436-11-0x0000000001250000-0x0000000001256000-memory.dmp

memory/3172-14-0x0000000004660000-0x0000000004CB8000-memory.dmp