Malware Analysis Report

2025-01-19 07:30

Sample ID 231023-zen2nsfb7t
Target NEAS.58b676aff7e20b6ac7be762ade641020_JC.exe
SHA256 77f97efe1a861cd368ad54d18a79a6d5cb0298496b9c777eef538367c414d390
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

77f97efe1a861cd368ad54d18a79a6d5cb0298496b9c777eef538367c414d390

Threat Level: Known bad

The file NEAS.58b676aff7e20b6ac7be762ade641020_JC.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: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-10-23 20:38

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

2023-10-23 20:38

Reported

2023-10-23 20:57

Platform

win7-20231020-en

Max time kernel

152s

Max time network

151s

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-1-5-21-1154728922-3261336865-3456416385-1000\Software\Microsoft\Windows\CurrentVersion\Run\2880FA20 = "C:\\Users\\Admin\\AppData\\Roaming\\2880FA20\\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.58b676aff7e20b6ac7be762ade641020_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.58b676aff7e20b6ac7be762ade641020_JC.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
US 8.8.8.8:53 cmnsgscccrej.pw udp
US 216.218.185.162:80 cmnsgscccrej.pw tcp
US 8.8.8.8:53 evbsdqvgmpph.pw udp
US 216.218.185.162:80 evbsdqvgmpph.pw tcp
US 8.8.8.8:53 mfueeimvyrsp.pw udp
US 216.218.185.162:80 mfueeimvyrsp.pw tcp
US 8.8.8.8:53 utmyhnffxpcj.pw udp
US 216.218.185.162:80 utmyhnffxpcj.pw tcp

Files

memory/1676-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1676-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1676-2-0x0000000001D40000-0x0000000002740000-memory.dmp

memory/1316-3-0x00000000026E0000-0x00000000026E6000-memory.dmp

memory/2540-4-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2540-7-0x0000000000EE0000-0x0000000000EF6000-memory.dmp

memory/1316-6-0x00000000026E0000-0x00000000026E6000-memory.dmp

memory/2540-9-0x0000000077C8F000-0x0000000077C91000-memory.dmp

memory/1316-11-0x0000000077AE1000-0x0000000077AE2000-memory.dmp

memory/2540-10-0x0000000077C90000-0x0000000077C91000-memory.dmp

memory/2540-8-0x0000000077C8F000-0x0000000077C90000-memory.dmp

memory/1676-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1676-13-0x0000000001D40000-0x0000000002740000-memory.dmp

memory/1316-14-0x0000000077C70000-0x0000000077C71000-memory.dmp

memory/2540-16-0x0000000000100000-0x0000000000106000-memory.dmp

memory/2540-17-0x0000000000180000-0x0000000000181000-memory.dmp

memory/1172-21-0x00000000003D0000-0x00000000003D6000-memory.dmp

memory/1172-22-0x0000000077AE1000-0x0000000077AE2000-memory.dmp

memory/2540-24-0x0000000000100000-0x0000000000106000-memory.dmp

memory/1316-27-0x0000000002690000-0x0000000002696000-memory.dmp

memory/1284-28-0x0000000000280000-0x0000000000286000-memory.dmp

memory/1284-26-0x0000000077AE1000-0x0000000077AE2000-memory.dmp

memory/1316-29-0x0000000002690000-0x0000000002696000-memory.dmp

memory/2540-33-0x0000000000190000-0x0000000000191000-memory.dmp

memory/1316-34-0x0000000077C50000-0x0000000077C51000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-10-23 20:38

Reported

2023-10-23 20:55

Platform

win10v2004-20231020-en

Max time kernel

8s

Max time network

13s

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-1-5-21-3350690463-3549324357-1323838019-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0789389D = "C:\\Users\\Admin\\AppData\\Roaming\\0789389D\\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\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.58b676aff7e20b6ac7be762ade641020_JC.exe

"C:\Users\Admin\AppData\Local\Temp\NEAS.58b676aff7e20b6ac7be762ade641020_JC.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 29.81.57.23.in-addr.arpa udp

Files

memory/4164-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4164-1-0x00000000005C0000-0x00000000005C1000-memory.dmp

memory/4164-2-0x0000000002330000-0x0000000002D30000-memory.dmp

memory/2820-4-0x0000000001EF0000-0x0000000001EF6000-memory.dmp

memory/3144-7-0x00007FFF84AED000-0x00007FFF84AEE000-memory.dmp

memory/2820-6-0x00000000777E2000-0x00000000777E3000-memory.dmp

memory/3144-5-0x0000000002370000-0x0000000002376000-memory.dmp

memory/3144-3-0x0000000002370000-0x0000000002376000-memory.dmp

memory/4164-8-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4164-9-0x0000000002330000-0x0000000002D30000-memory.dmp

memory/2820-11-0x0000000001EF0000-0x0000000001EF6000-memory.dmp

memory/2332-13-0x0000000000270000-0x0000000000276000-memory.dmp

memory/3144-16-0x00000000023B0000-0x00000000023B6000-memory.dmp

memory/3444-19-0x00000000002F0000-0x00000000002F6000-memory.dmp