Malware Analysis Report

2025-01-19 07:37

Sample ID 231127-j7yhtafc6t
Target 2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443
SHA256 2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443
Tags
tinba banker 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

2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443

Threat Level: Known bad

The file 2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443 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

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-27 08:19

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-27 08:19

Reported

2023-11-27 08:21

Platform

win7-20231023-en

Max time kernel

148s

Max time network

154s

Command Line

C:\Windows\Explorer.EXE

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3618187007-3650799920-3290345941-1000\Software\Microsoft\Windows\CurrentVersion\Run\8120ADB8 = "C:\\Users\\Admin\\AppData\\Roaming\\8120ADB8\\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

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A 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

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Windows\system32\taskhost.exe

"taskhost.exe"

C:\Users\Admin\AppData\Local\Temp\2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443.exe

"C:\Users\Admin\AppData\Local\Temp\2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443.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

Files

memory/1704-1-0x0000000000480000-0x0000000000481000-memory.dmp

memory/1704-0-0x0000000004100000-0x0000000005202000-memory.dmp

memory/1704-2-0x0000000004100000-0x0000000005202000-memory.dmp

memory/1704-5-0x0000000005550000-0x0000000005F50000-memory.dmp

memory/2648-6-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1204-4-0x0000000002BC0000-0x0000000002BC6000-memory.dmp

memory/1204-9-0x0000000002BC0000-0x0000000002BC6000-memory.dmp

memory/2648-11-0x0000000000150000-0x0000000000156000-memory.dmp

memory/2648-10-0x0000000000420000-0x0000000000436000-memory.dmp

memory/2648-8-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1204-12-0x0000000077CC1000-0x0000000077CC2000-memory.dmp

memory/2648-13-0x0000000077E6F000-0x0000000077E70000-memory.dmp

memory/2648-15-0x0000000077E70000-0x0000000077E71000-memory.dmp

memory/2648-14-0x0000000077E6F000-0x0000000077E71000-memory.dmp

memory/1704-17-0x0000000000400000-0x000000000043D000-memory.dmp

memory/1704-18-0x0000000005550000-0x0000000005F50000-memory.dmp

memory/1116-20-0x0000000001C40000-0x0000000001C46000-memory.dmp

memory/1180-23-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1116-25-0x0000000001C40000-0x0000000001C46000-memory.dmp

memory/1204-28-0x0000000002BD0000-0x0000000002BD6000-memory.dmp

memory/1116-27-0x0000000077CC1000-0x0000000077CC2000-memory.dmp

memory/1180-29-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1204-31-0x0000000002BD0000-0x0000000002BD6000-memory.dmp

memory/2648-34-0x0000000000410000-0x0000000000416000-memory.dmp

memory/2648-33-0x0000000000190000-0x0000000000191000-memory.dmp

memory/2648-35-0x0000000000410000-0x0000000000416000-memory.dmp

memory/2648-36-0x00000000001A0000-0x00000000001A1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-27 08:19

Reported

2023-11-27 08:21

Platform

win10v2004-20231020-en

Max time kernel

47s

Max time network

51s

Command Line

C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc

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\1a\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:\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\svchost.exe

C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc

C:\Windows\system32\taskhostw.exe

taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\sihost.exe

sihost.exe

C:\Users\Admin\AppData\Local\Temp\2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443.exe

"C:\Users\Admin\AppData\Local\Temp\2bd290f8dd2681d0b09612d496357d1345bc50c634c7daf20c8e14a2e39c0443.exe"

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 34.175.53.84.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.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 8.8.8.8:53 126.22.238.8.in-addr.arpa udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp

Files

memory/2704-1-0x00000000046F0000-0x00000000057F2000-memory.dmp

memory/2704-2-0x00000000044E0000-0x00000000044E1000-memory.dmp

memory/2704-3-0x00000000046F0000-0x00000000057F2000-memory.dmp

memory/3284-5-0x00000000026A0000-0x00000000026A6000-memory.dmp

memory/2704-8-0x0000000005B00000-0x0000000006500000-memory.dmp

memory/3284-7-0x00000000026A0000-0x00000000026A6000-memory.dmp

memory/3284-10-0x00007FF9A4AED000-0x00007FF9A4AEE000-memory.dmp

memory/2536-9-0x00000000028B0000-0x00000000028B6000-memory.dmp

memory/2536-6-0x00000000028B0000-0x00000000028B6000-memory.dmp

memory/2536-11-0x0000000077762000-0x0000000077763000-memory.dmp

memory/2536-12-0x00000000028B0000-0x00000000028B6000-memory.dmp

memory/2704-14-0x0000000000400000-0x000000000043D000-memory.dmp

memory/2704-15-0x0000000005B00000-0x0000000006500000-memory.dmp

memory/2264-17-0x0000000000C50000-0x0000000000C56000-memory.dmp

memory/2256-20-0x0000000000D30000-0x0000000000D36000-memory.dmp

memory/3284-19-0x00000000026B0000-0x00000000026B6000-memory.dmp

memory/2544-18-0x0000000000790000-0x0000000000796000-memory.dmp

memory/2264-22-0x0000000000C50000-0x0000000000C56000-memory.dmp

memory/3416-21-0x0000000000C80000-0x0000000000C86000-memory.dmp