Malware Analysis Report

2025-01-19 07:40

Sample ID 241117-yvl2kswrc1
Target 8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.exe
SHA256 8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b
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

8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b

Threat Level: Known bad

The file 8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.exe was found to be: Known bad.

Malicious Activity Summary

upx tinba banker discovery persistence trojan

Tinba / TinyBanker

Tinba family

Adds Run key to start application

UPX packed file

System Location Discovery: System Language Discovery

Program crash

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-17 20:06

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-17 20:06

Reported

2024-11-17 20:08

Platform

win7-20240903-en

Max time kernel

118s

Max time network

119s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Tinba family

tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\7B2B1C47 = "C:\\Users\\Admin\\AppData\\Roaming\\7B2B1C47\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.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\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.exe

"C:\Users\Admin\AppData\Local\Temp\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.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/876-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/876-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1208-3-0x0000000002DD0000-0x0000000002DD6000-memory.dmp

memory/1208-2-0x0000000002DD0000-0x0000000002DD6000-memory.dmp

memory/1208-4-0x0000000002DD0000-0x0000000002DD6000-memory.dmp

memory/876-5-0x0000000001D30000-0x0000000002730000-memory.dmp

memory/340-6-0x0000000000110000-0x0000000000116000-memory.dmp

memory/340-7-0x0000000077E20000-0x0000000077E21000-memory.dmp

memory/340-8-0x0000000077E1F000-0x0000000077E20000-memory.dmp

memory/340-9-0x0000000077E1F000-0x0000000077E21000-memory.dmp

memory/1208-10-0x0000000077C71000-0x0000000077C72000-memory.dmp

memory/340-11-0x0000000077C20000-0x0000000077DC9000-memory.dmp

memory/876-12-0x0000000000400000-0x000000000041E000-memory.dmp

memory/876-13-0x0000000001D30000-0x0000000002730000-memory.dmp

memory/852-28-0x0000000077C71000-0x0000000077C72000-memory.dmp

memory/1172-27-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1108-26-0x0000000077C71000-0x0000000077C72000-memory.dmp

memory/1108-25-0x0000000000300000-0x0000000000306000-memory.dmp

memory/852-24-0x0000000001D90000-0x0000000001D96000-memory.dmp

memory/1208-22-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/1172-20-0x0000000001DA0000-0x0000000001DA6000-memory.dmp

memory/1208-29-0x0000000002D80000-0x0000000002D86000-memory.dmp

memory/852-30-0x0000000001D90000-0x0000000001D96000-memory.dmp

memory/852-31-0x0000000077C71000-0x0000000077C72000-memory.dmp

memory/340-32-0x0000000000110000-0x0000000000116000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-17 20:06

Reported

2024-11-17 20:08

Platform

win10v2004-20241007-en

Max time kernel

118s

Max time network

95s

Command Line

sihost.exe

Signatures

Tinba / TinyBanker

trojan banker tinba

Tinba family

tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\212EE2C2 = "C:\\Users\\Admin\\AppData\\Roaming\\212EE2C2\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.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\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.exe

"C:\Users\Admin\AppData\Local\Temp\8671cdb5f474895ddc4b4e5616a8037ca2e03d5bfd0087e61e5b11dae01e7e8b.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3968 -ip 3968

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3968 -s 356

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 180.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp

Files

memory/1312-0-0x0000000000400000-0x000000000041E000-memory.dmp

memory/1312-1-0x00000000006C0000-0x00000000006C1000-memory.dmp

memory/3528-2-0x0000000000C00000-0x0000000000C06000-memory.dmp

memory/3528-3-0x0000000000C00000-0x0000000000C06000-memory.dmp

memory/1312-4-0x00000000022D0000-0x0000000002CD0000-memory.dmp

memory/3528-7-0x00007FFB43C6D000-0x00007FFB43C6E000-memory.dmp

memory/3968-6-0x0000000077E12000-0x0000000077E13000-memory.dmp

memory/3968-5-0x0000000000F60000-0x0000000000F66000-memory.dmp

memory/3968-8-0x00007FFB43BD0000-0x00007FFB43DC5000-memory.dmp

memory/1312-10-0x0000000000400000-0x000000000041E000-memory.dmp

memory/1312-11-0x00000000022D0000-0x0000000002CD0000-memory.dmp

memory/3528-12-0x00007FFB43E00000-0x00007FFB43E01000-memory.dmp

memory/3108-16-0x0000000000360000-0x0000000000366000-memory.dmp

memory/3968-17-0x0000000000F60000-0x0000000000F66000-memory.dmp