Malware Analysis Report

2024-10-19 13:24

Sample ID 240824-asbwtswbmd
Target f2d2f7b958d8affc9fe31891860e22e0N.exe
SHA256 339e8f0854d2c3cc29e4c21bef4d104b49d3e9f461c5448ff669d8ccb9424b13
Tags
upx tinba banker discovery 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

339e8f0854d2c3cc29e4c21bef4d104b49d3e9f461c5448ff669d8ccb9424b13

Threat Level: Known bad

The file f2d2f7b958d8affc9fe31891860e22e0N.exe was found to be: Known bad.

Malicious Activity Summary

upx tinba banker discovery persistence trojan

Tinba / TinyBanker

UPX packed file

Adds Run key to start application

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-24 00:28

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

2024-08-24 00:28

Reported

2024-08-24 00:30

Platform

win7-20240729-en

Max time kernel

118s

Max time network

119s

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-1-5-21-2257386474-3982792636-3902186748-1000\Software\Microsoft\Windows\CurrentVersion\Run\A49021B9 = "C:\\Users\\Admin\\AppData\\Roaming\\A49021B9\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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

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:\Windows\system32\DllHost.exe

C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}

C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.exe

"C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.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

Files

memory/1244-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1244-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1464-3-0x0000000002A90000-0x0000000002A96000-memory.dmp

memory/1464-2-0x0000000002A90000-0x0000000002A96000-memory.dmp

memory/1464-4-0x0000000002A90000-0x0000000002A96000-memory.dmp

memory/1244-5-0x0000000001EB0000-0x00000000028B0000-memory.dmp

memory/1464-10-0x0000000077151000-0x0000000077152000-memory.dmp

memory/1020-9-0x00000000772FF000-0x0000000077301000-memory.dmp

memory/1020-8-0x00000000772FF000-0x0000000077300000-memory.dmp

memory/1020-7-0x0000000077300000-0x0000000077301000-memory.dmp

memory/1020-6-0x00000000001A0000-0x00000000001A6000-memory.dmp

memory/1020-11-0x0000000077100000-0x00000000772A9000-memory.dmp

memory/1244-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1244-13-0x0000000001EB0000-0x00000000028B0000-memory.dmp

memory/916-26-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

memory/1464-23-0x0000000002A40000-0x0000000002A46000-memory.dmp

memory/1396-21-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/916-32-0x0000000077151000-0x0000000077152000-memory.dmp

memory/916-31-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

memory/1396-30-0x00000000001B0000-0x00000000001B6000-memory.dmp

memory/1308-29-0x0000000077151000-0x0000000077152000-memory.dmp

memory/1308-28-0x0000000000240000-0x0000000000246000-memory.dmp

memory/1464-27-0x0000000002A40000-0x0000000002A46000-memory.dmp

memory/1020-33-0x00000000001A0000-0x00000000001A6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-24 00:28

Reported

2024-08-24 00:30

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

100s

Command Line

sihost.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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\44E22F38 = "C:\\Users\\Admin\\AppData\\Roaming\\44E22F38\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\winver.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege 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

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.exe

"C:\Users\Admin\AppData\Local\Temp\f2d2f7b958d8affc9fe31891860e22e0N.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1792 -ip 1792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1792 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/3116-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/3116-1-0x0000000002160000-0x0000000002161000-memory.dmp

memory/3436-2-0x00000000011F0000-0x00000000011F6000-memory.dmp

memory/3436-3-0x00000000011F0000-0x00000000011F6000-memory.dmp

memory/3116-4-0x00000000022A0000-0x0000000002CA0000-memory.dmp

memory/3436-7-0x00007FFE750AD000-0x00007FFE750AE000-memory.dmp

memory/1792-6-0x0000000077EC2000-0x0000000077EC3000-memory.dmp

memory/1792-5-0x0000000000C10000-0x0000000000C16000-memory.dmp

memory/1792-8-0x00007FFE75010000-0x00007FFE75205000-memory.dmp

memory/3436-9-0x00007FFE75240000-0x00007FFE75241000-memory.dmp

memory/3116-10-0x0000000000400000-0x000000000041D000-memory.dmp

memory/3116-11-0x00000000022A0000-0x0000000002CA0000-memory.dmp

memory/2968-15-0x0000000000B70000-0x0000000000B76000-memory.dmp

memory/1792-16-0x0000000000C10000-0x0000000000C16000-memory.dmp

memory/2968-18-0x00007FFE75230000-0x00007FFE75231000-memory.dmp