Malware Analysis Report

2025-01-19 07:37

Sample ID 231115-dz36fabd58
Target NEAS.91bf50b02e93421d1130ef7276c6aeb0.exe
SHA256 504b62003ec6dd74f26f834fffbcef0e13fdf4abc2c75a7d5db5ff90e98eef7f
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

504b62003ec6dd74f26f834fffbcef0e13fdf4abc2c75a7d5db5ff90e98eef7f

Threat Level: Known bad

The file NEAS.91bf50b02e93421d1130ef7276c6aeb0.exe 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 use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-15 03:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-15 03:27

Reported

2023-11-15 03:30

Platform

win7-20231020-en

Max time kernel

150s

Max time network

148s

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-1-5-21-2952504676-3105837840-1406404655-1000\Software\Microsoft\Windows\CurrentVersion\Run\E5B67958 = "C:\\Users\\Admin\\AppData\\Roaming\\E5B67958\\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

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\system32\taskhost.exe

"taskhost.exe"

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\Dwm.exe

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

C:\Users\Admin\AppData\Local\Temp\NEAS.91bf50b02e93421d1130ef7276c6aeb0.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.91bf50b02e93421d1130ef7276c6aeb0.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/1364-0-0x0000000004270000-0x0000000005372000-memory.dmp

memory/1364-1-0x0000000001E30000-0x0000000001E31000-memory.dmp

memory/1364-2-0x0000000001E30000-0x0000000001E31000-memory.dmp

memory/1364-3-0x0000000004270000-0x0000000005372000-memory.dmp

memory/1364-6-0x0000000005780000-0x0000000006180000-memory.dmp

memory/1204-5-0x0000000002BE0000-0x0000000002BE6000-memory.dmp

memory/2748-7-0x0000000000310000-0x0000000000316000-memory.dmp

memory/2748-10-0x0000000000310000-0x0000000000316000-memory.dmp

memory/2748-9-0x0000000000810000-0x0000000000826000-memory.dmp

memory/2748-12-0x0000000000310000-0x0000000000316000-memory.dmp

memory/1204-11-0x0000000002BE0000-0x0000000002BE6000-memory.dmp

memory/1204-13-0x0000000077691000-0x0000000077692000-memory.dmp

memory/2748-14-0x000000007783F000-0x0000000077840000-memory.dmp

memory/2748-16-0x0000000077840000-0x0000000077841000-memory.dmp

memory/2748-15-0x000000007783F000-0x0000000077841000-memory.dmp

memory/1364-18-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1364-19-0x0000000005780000-0x0000000006180000-memory.dmp

memory/1108-21-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1108-25-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1152-24-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1108-27-0x0000000077691000-0x0000000077692000-memory.dmp

memory/1152-29-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1204-30-0x0000000002BF0000-0x0000000002BF6000-memory.dmp

memory/1204-33-0x0000000002BF0000-0x0000000002BF6000-memory.dmp

memory/2748-35-0x0000000000660000-0x0000000000661000-memory.dmp

memory/2748-34-0x00000000006D0000-0x00000000006D6000-memory.dmp

memory/2748-36-0x00000000006D0000-0x00000000006D6000-memory.dmp

memory/2748-37-0x0000000000670000-0x0000000000671000-memory.dmp

memory/1204-43-0x0000000077820000-0x0000000077821000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-15 03:27

Reported

2023-11-15 03:30

Platform

win10v2004-20231020-en

Max time kernel

62s

Max time network

62s

Command Line

"C:\Users\Admin\AppData\Local\Temp\NEAS.91bf50b02e93421d1130ef7276c6aeb0.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\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:\Users\Admin\AppData\Local\Temp\NEAS.91bf50b02e93421d1130ef7276c6aeb0.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.91bf50b02e93421d1130ef7276c6aeb0.exe"

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\taskhostw.exe

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

C:\Windows\system32\svchost.exe

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

C:\Windows\system32\sihost.exe

sihost.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 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 39.142.81.104.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/1680-1-0x0000000004690000-0x0000000005792000-memory.dmp

memory/1680-2-0x0000000003EC0000-0x0000000003EC1000-memory.dmp

memory/1680-3-0x0000000004690000-0x0000000005792000-memory.dmp

memory/3320-7-0x0000000000F70000-0x0000000000F76000-memory.dmp

memory/1116-6-0x00000000027E0000-0x00000000027E6000-memory.dmp

memory/3320-10-0x00007FFB1FD0D000-0x00007FFB1FD0E000-memory.dmp

memory/1116-11-0x0000000077442000-0x0000000077443000-memory.dmp

memory/1116-9-0x00000000027E0000-0x00000000027E6000-memory.dmp

memory/1680-8-0x00000000058A0000-0x00000000062A0000-memory.dmp

memory/3320-5-0x0000000000F70000-0x0000000000F76000-memory.dmp

memory/1116-12-0x0000000000C40000-0x0000000000C52000-memory.dmp

memory/1680-14-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1680-15-0x00000000058A0000-0x00000000062A0000-memory.dmp

memory/2332-16-0x0000000000CC0000-0x0000000000CC6000-memory.dmp

memory/2332-18-0x0000000000CC0000-0x0000000000CC6000-memory.dmp

memory/2344-17-0x0000000000040000-0x0000000000046000-memory.dmp

memory/2452-19-0x0000000000BB0000-0x0000000000BB6000-memory.dmp

memory/2344-21-0x0000000000040000-0x0000000000046000-memory.dmp

memory/3320-20-0x0000000000F90000-0x0000000000F96000-memory.dmp

memory/2452-23-0x0000000000BB0000-0x0000000000BB6000-memory.dmp