Malware Analysis Report

2025-01-19 07:23

Sample ID 231220-rbkk3sdfdn
Target c001b570b969797c874f9dd3af095475
SHA256 40473bba1bbee6df2b7dfba1f00dd7274b4c4a49dafb1945d75530fcace3a0d5
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

40473bba1bbee6df2b7dfba1f00dd7274b4c4a49dafb1945d75530fcace3a0d5

Threat Level: Known bad

The file c001b570b969797c874f9dd3af095475 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

Program crash

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-12-20 14:01

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

2023-12-20 14:01

Reported

2023-12-20 16:47

Platform

win7-20231129-en

Max time kernel

149s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c001b570b969797c874f9dd3af095475.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-1-5-21-3470981204-343661084-3367201002-1000\Software\Microsoft\Windows\CurrentVersion\Run\2C8BDF36 = "C:\\Users\\Admin\\AppData\\Roaming\\2C8BDF36\\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 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:\Users\Admin\AppData\Local\Temp\c001b570b969797c874f9dd3af095475.exe

"C:\Users\Admin\AppData\Local\Temp\c001b570b969797c874f9dd3af095475.exe"

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:\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/2088-0-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2088-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2088-3-0x0000000001C50000-0x0000000002650000-memory.dmp

memory/1224-5-0x00000000000F0000-0x00000000000F6000-memory.dmp

memory/1368-4-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/1224-11-0x0000000000C10000-0x0000000000C26000-memory.dmp

memory/1368-10-0x0000000077351000-0x0000000077352000-memory.dmp

memory/1224-9-0x0000000077500000-0x0000000077501000-memory.dmp

memory/1224-8-0x00000000774FF000-0x0000000077501000-memory.dmp

memory/1368-7-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/1224-6-0x00000000774FF000-0x0000000077500000-memory.dmp

memory/1368-2-0x00000000025F0000-0x00000000025F6000-memory.dmp

memory/2088-12-0x0000000000400000-0x0000000000428000-memory.dmp

memory/2088-13-0x0000000001C50000-0x0000000002650000-memory.dmp

memory/1224-15-0x00000000000F0000-0x00000000000F6000-memory.dmp

memory/1224-16-0x00000000001E0000-0x00000000001E1000-memory.dmp

memory/1368-22-0x0000000002520000-0x0000000002526000-memory.dmp

memory/1368-26-0x0000000002520000-0x0000000002526000-memory.dmp

memory/1320-25-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/1248-24-0x0000000077351000-0x0000000077352000-memory.dmp

memory/1248-23-0x0000000001F90000-0x0000000001F96000-memory.dmp

memory/1320-20-0x0000000001EA0000-0x0000000001EA6000-memory.dmp

memory/1224-30-0x00000000001F0000-0x00000000001F1000-memory.dmp

memory/1224-31-0x00000000000F0000-0x00000000000F6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-20 14:01

Reported

2023-12-20 16:48

Platform

win10v2004-20231215-en

Max time kernel

149s

Max time network

149s

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-1-5-21-1232405761-1209240240-3206092754-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\744A7785 = "C:\\Users\\Admin\\AppData\\Roaming\\744A7785\\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

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\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\c001b570b969797c874f9dd3af095475.exe

"C:\Users\Admin\AppData\Local\Temp\c001b570b969797c874f9dd3af095475.exe"

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3644 -ip 3644

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3644 -s 356

Network

Country Destination Domain Proto
US 8.8.8.8:53 84.177.190.20.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 20.231.121.79:80 tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 182.245.100.95.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 76.246.100.95.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp

Files

memory/548-0-0x0000000000400000-0x0000000000428000-memory.dmp

memory/548-1-0x0000000002170000-0x0000000002171000-memory.dmp

memory/548-3-0x0000000002370000-0x0000000002D70000-memory.dmp

memory/3540-2-0x0000000003610000-0x0000000003616000-memory.dmp

memory/3644-5-0x00000000023C0000-0x00000000023C6000-memory.dmp

memory/3540-4-0x0000000003610000-0x0000000003616000-memory.dmp

memory/3644-8-0x0000000000470000-0x0000000000482000-memory.dmp

memory/3540-7-0x00007FF91434D000-0x00007FF91434E000-memory.dmp

memory/3644-6-0x0000000077BC2000-0x0000000077BC3000-memory.dmp

memory/548-9-0x0000000000400000-0x0000000000428000-memory.dmp

memory/548-10-0x0000000002370000-0x0000000002D70000-memory.dmp

memory/3540-13-0x00007FF9144E0000-0x00007FF9144E1000-memory.dmp

memory/2476-15-0x0000000000070000-0x0000000000076000-memory.dmp

memory/3644-16-0x00000000023C0000-0x00000000023C6000-memory.dmp