Malware Analysis Report

2025-01-19 07:37

Sample ID 231105-yqk9gsbe9w
Target NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe
SHA256 b637efe55a8e1fd3eb1ebfd8241701ecaf07d314d688cbe0b099cff47f5a4c64
Tags
upx 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

b637efe55a8e1fd3eb1ebfd8241701ecaf07d314d688cbe0b099cff47f5a4c64

Threat Level: Known bad

The file NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe was found to be: Known bad.

Malicious Activity Summary

upx tinba banker persistence trojan

Tinba / TinyBanker

UPX packed file

Adds Run key to start application

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-05 19:59

Signatures

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-05 19:59

Reported

2023-11-05 20:03

Platform

win7-20231023-en

Max time kernel

150s

Max time network

154s

Command Line

C:\Windows\Explorer.EXE

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX packed file

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

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\A56C222A = "C:\\Users\\Admin\\AppData\\Roaming\\A56C222A\\bin.exe" 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
N/A N/A C:\Windows\SysWOW64\winver.exe 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
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\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\NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 spaines.pw udp
US 216.218.185.162:80 spaines.pw tcp
US 8.8.8.8:53 uyhgqunqkxnx.pw udp
NL 192.42.116.41:80 uyhgqunqkxnx.pw tcp
US 8.8.8.8:53 vcklmnnejwxx.pw udp
US 216.218.185.162:80 vcklmnnejwxx.pw tcp

Files

memory/1724-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1724-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1724-3-0x0000000001D50000-0x0000000002750000-memory.dmp

memory/2452-5-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1204-4-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1204-2-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/2452-8-0x000000007701F000-0x0000000077021000-memory.dmp

memory/1204-7-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/2452-6-0x000000007701F000-0x0000000077020000-memory.dmp

memory/2452-9-0x0000000077020000-0x0000000077021000-memory.dmp

memory/1204-10-0x0000000076E71000-0x0000000076E72000-memory.dmp

memory/2452-11-0x0000000000650000-0x0000000000666000-memory.dmp

memory/1724-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1724-13-0x0000000001D50000-0x0000000002750000-memory.dmp

memory/2452-16-0x00000000001C0000-0x00000000001C1000-memory.dmp

memory/2452-15-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1100-20-0x0000000000390000-0x0000000000396000-memory.dmp

memory/1100-22-0x0000000076E71000-0x0000000076E72000-memory.dmp

memory/2452-24-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1172-28-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1204-27-0x0000000002A80000-0x0000000002A86000-memory.dmp

memory/1204-26-0x0000000077000000-0x0000000077001000-memory.dmp

memory/1204-29-0x0000000002A80000-0x0000000002A86000-memory.dmp

memory/2452-33-0x00000000001D0000-0x00000000001D1000-memory.dmp

memory/1204-34-0x0000000076FE0000-0x0000000076FE1000-memory.dmp

memory/1204-35-0x000007FEF64F0000-0x000007FEF6633000-memory.dmp

memory/1204-36-0x000007FEEDA10000-0x000007FEEDA1A000-memory.dmp

memory/1204-37-0x000007FEF64F0000-0x000007FEF6633000-memory.dmp

memory/1204-38-0x000007FEEDA10000-0x000007FEEDA1A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-05 19:59

Reported

2023-11-05 20:03

Platform

win10v2004-20231020-en

Max time kernel

8s

Max time network

12s

Command Line

C:\Windows\Explorer.EXE

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3811856890-180006922-3689258494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\56357F40 = "C:\\Users\\Admin\\AppData\\Roaming\\56357F40\\bin.exe" 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

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\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:\Users\Admin\AppData\Local\Temp\NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.aa982f552efc53ab125c5a8b1fbe3d70.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 254.105.26.67.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 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

memory/4768-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4768-1-0x00000000005E0000-0x00000000005E1000-memory.dmp

memory/4768-2-0x0000000002250000-0x0000000002C50000-memory.dmp

memory/2200-4-0x00000000009F0000-0x00000000009F6000-memory.dmp

memory/2200-6-0x0000000077792000-0x0000000077793000-memory.dmp

memory/1444-7-0x00007FFE8B6CD000-0x00007FFE8B6CE000-memory.dmp

memory/1444-5-0x0000000000DE0000-0x0000000000DE6000-memory.dmp

memory/1444-3-0x0000000000DE0000-0x0000000000DE6000-memory.dmp

memory/4768-8-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4768-9-0x0000000002250000-0x0000000002C50000-memory.dmp

memory/1444-10-0x00007FFE8B860000-0x00007FFE8B861000-memory.dmp

memory/2200-12-0x00000000009F0000-0x00000000009F6000-memory.dmp

memory/2416-16-0x0000000000760000-0x0000000000766000-memory.dmp

memory/2292-15-0x0000000000460000-0x0000000000466000-memory.dmp

memory/2316-14-0x0000000000920000-0x0000000000926000-memory.dmp

memory/1444-17-0x0000000000E20000-0x0000000000E26000-memory.dmp

memory/2316-18-0x0000000000920000-0x0000000000926000-memory.dmp

memory/1444-20-0x0000000000E20000-0x0000000000E26000-memory.dmp

memory/3680-21-0x00000000006E0000-0x00000000006E6000-memory.dmp