Malware Analysis Report

2025-01-19 07:33

Sample ID 231105-kf2xladc4z
Target NEAS.a4a1f2b3b256c5c028b4339a670a7740.exe
SHA256 a7a4090a27ab7fdf7302b204f391766f46c952057b9dec04d5939bba526140c0
Tags
tinba banker persistence trojan upx
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

a7a4090a27ab7fdf7302b204f391766f46c952057b9dec04d5939bba526140c0

Threat Level: Known bad

The file NEAS.a4a1f2b3b256c5c028b4339a670a7740.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan upx

Tinba / TinyBanker

UPX packed file

Adds Run key to start application

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-05 08:33

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 08:33

Reported

2023-11-05 08:35

Platform

win7-20231023-en

Max time kernel

150s

Max time network

152s

Command Line

"taskhost.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\055771FE = "C:\\Users\\Admin\\AppData\\Roaming\\055771FE\\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

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:\Users\Admin\AppData\Local\Temp\NEAS.a4a1f2b3b256c5c028b4339a670a7740.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a4a1f2b3b256c5c028b4339a670a7740.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/808-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/808-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/808-3-0x0000000001DD0000-0x00000000027D0000-memory.dmp

memory/1204-4-0x0000000002AE0000-0x0000000002AE6000-memory.dmp

memory/1204-2-0x0000000002AE0000-0x0000000002AE6000-memory.dmp

memory/2416-5-0x0000000000100000-0x0000000000106000-memory.dmp

memory/1204-10-0x0000000077691000-0x0000000077692000-memory.dmp

memory/2416-9-0x0000000077840000-0x0000000077841000-memory.dmp

memory/2416-8-0x000000007783F000-0x0000000077841000-memory.dmp

memory/1204-7-0x0000000002AE0000-0x0000000002AE6000-memory.dmp

memory/2416-6-0x000000007783F000-0x0000000077840000-memory.dmp

memory/2416-11-0x0000000000A20000-0x0000000000A36000-memory.dmp

memory/808-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/808-13-0x0000000001DD0000-0x00000000027D0000-memory.dmp

memory/2416-15-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2416-16-0x0000000000140000-0x0000000000141000-memory.dmp

memory/1204-17-0x0000000077820000-0x0000000077821000-memory.dmp

memory/1172-23-0x0000000000220000-0x0000000000226000-memory.dmp

memory/1172-28-0x0000000000220000-0x0000000000226000-memory.dmp

memory/1120-27-0x0000000077691000-0x0000000077692000-memory.dmp

memory/1204-29-0x0000000002B00000-0x0000000002B06000-memory.dmp

memory/1120-26-0x0000000000260000-0x0000000000266000-memory.dmp

memory/1204-25-0x0000000002B00000-0x0000000002B06000-memory.dmp

memory/2416-30-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2416-34-0x0000000000150000-0x0000000000151000-memory.dmp

memory/1204-35-0x0000000077800000-0x0000000077801000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-05 08:33

Reported

2023-11-05 08:36

Platform

win10v2004-20231020-en

Max time kernel

7s

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\49C11208 = "C:\\Users\\Admin\\AppData\\Roaming\\49C11208\\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.a4a1f2b3b256c5c028b4339a670a7740.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.a4a1f2b3b256c5c028b4339a670a7740.exe"

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 8.8.8.8:53 163.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 39.142.81.104.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/3004-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/3004-1-0x00000000004F0000-0x00000000004F1000-memory.dmp

memory/3264-2-0x0000000000B50000-0x0000000000B56000-memory.dmp

memory/3264-3-0x0000000000B50000-0x0000000000B56000-memory.dmp

memory/3004-4-0x0000000002230000-0x0000000002C30000-memory.dmp

memory/3264-5-0x00007FFC35E4D000-0x00007FFC35E4E000-memory.dmp

memory/4704-6-0x0000000077DC2000-0x0000000077DC3000-memory.dmp

memory/4704-7-0x0000000000A70000-0x0000000000A76000-memory.dmp

memory/3004-8-0x0000000000400000-0x000000000041D000-memory.dmp

memory/3004-9-0x0000000002230000-0x0000000002C30000-memory.dmp

memory/3264-10-0x00007FFC35FE0000-0x00007FFC35FE1000-memory.dmp

memory/2416-14-0x00000000002E0000-0x00000000002E6000-memory.dmp

memory/2380-15-0x00000000007A0000-0x00000000007A6000-memory.dmp

memory/2544-16-0x0000000000C10000-0x0000000000C16000-memory.dmp

memory/2416-18-0x00000000002E0000-0x00000000002E6000-memory.dmp

memory/3264-20-0x0000000000D90000-0x0000000000D96000-memory.dmp