Malware Analysis Report

2024-09-09 17:05

Sample ID 240702-bvvbma1fnd
Target a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53
SHA256 a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53

Threat Level: Known bad

The file a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53 was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-02 01:28

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-02 01:28

Reported

2024-07-02 01:30

Platform

win10v2004-20240508-en

Max time kernel

135s

Max time network

97s

Command Line

sihost.exe

Signatures

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

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe

"C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1116 -ip 1116

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1116 -s 632

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/1612-0-0x00000000006D0000-0x00000000006D2000-memory.dmp

memory/3536-4-0x0000000002C70000-0x0000000002C76000-memory.dmp

memory/1116-2-0x0000000000A90000-0x0000000000A96000-memory.dmp

memory/3536-1-0x0000000002C70000-0x0000000002C76000-memory.dmp

memory/1612-5-0x0000000002360000-0x0000000002D60000-memory.dmp

memory/1116-8-0x00007FF9DB6F0000-0x00007FF9DB8E5000-memory.dmp

memory/3536-7-0x00007FF9DB78D000-0x00007FF9DB78E000-memory.dmp

memory/1116-6-0x0000000077B12000-0x0000000077B13000-memory.dmp

memory/1612-9-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2660-10-0x0000000000F70000-0x0000000000F76000-memory.dmp

memory/2660-11-0x0000000000F70000-0x0000000000F76000-memory.dmp

memory/1116-13-0x0000000000A90000-0x0000000000A96000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-02 01:28

Reported

2024-07-02 01:30

Platform

win7-20240611-en

Max time kernel

148s

Max time network

150s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2812790648-3157963462-487717889-1000\Software\Microsoft\Windows\CurrentVersion\Run\DFB217A0 = "C:\\Users\\Admin\\AppData\\Roaming\\DFB217A0\\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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 948 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe C:\Windows\SysWOW64\winver.exe
PID 948 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe C:\Windows\SysWOW64\winver.exe
PID 948 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe C:\Windows\SysWOW64\winver.exe
PID 948 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe C:\Windows\SysWOW64\winver.exe
PID 948 wrote to memory of 1848 N/A C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe C:\Windows\SysWOW64\winver.exe
PID 1848 wrote to memory of 1200 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 1848 wrote to memory of 1120 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 1848 wrote to memory of 1180 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 1848 wrote to memory of 1200 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 1848 wrote to memory of 2028 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 1848 wrote to memory of 948 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe

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\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe

"C:\Users\Admin\AppData\Local\Temp\a2aa12090aaab3ae5ee1af85f6ff51723dace7f724c801aa45cd0fb969288a53.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
US 8.8.8.8:53 insamertojertoq.cc udp
US 8.8.8.8:53 yxjsibeugmmj.com udp
US 216.218.185.162:80 yxjsibeugmmj.com tcp

Files

memory/948-0-0x0000000000240000-0x0000000000242000-memory.dmp

memory/948-1-0x0000000002600000-0x0000000003000000-memory.dmp

memory/1848-10-0x0000000000130000-0x0000000000131000-memory.dmp

memory/1200-13-0x00000000776F1000-0x00000000776F2000-memory.dmp

memory/1200-12-0x0000000002CD0000-0x0000000002CD6000-memory.dmp

memory/1848-11-0x00000000003D1000-0x00000000003D2000-memory.dmp

memory/1848-9-0x000000007789F000-0x00000000778A1000-memory.dmp

memory/1848-8-0x000000007789F000-0x00000000778A0000-memory.dmp

memory/1848-7-0x00000000778A0000-0x00000000778A1000-memory.dmp

memory/1848-6-0x00000000000B0000-0x00000000000B6000-memory.dmp

memory/1200-3-0x0000000002CD0000-0x0000000002CD6000-memory.dmp

memory/1200-2-0x0000000002CD0000-0x0000000002CD6000-memory.dmp

memory/1848-14-0x00000000776A0000-0x0000000077849000-memory.dmp

memory/948-15-0x0000000000400000-0x000000000041D000-memory.dmp

memory/2028-24-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/1200-22-0x0000000002CE0000-0x0000000002CE6000-memory.dmp

memory/1180-19-0x0000000000230000-0x0000000000236000-memory.dmp

memory/1120-17-0x0000000000490000-0x0000000000496000-memory.dmp

memory/1200-32-0x0000000002CE0000-0x0000000002CE6000-memory.dmp

memory/1120-31-0x0000000000490000-0x0000000000496000-memory.dmp

memory/948-33-0x0000000002600000-0x0000000003000000-memory.dmp

memory/2028-30-0x00000000776F1000-0x00000000776F2000-memory.dmp

memory/2028-29-0x00000000004E0000-0x00000000004E6000-memory.dmp

memory/1180-28-0x00000000776F1000-0x00000000776F2000-memory.dmp

memory/1180-27-0x0000000000230000-0x0000000000236000-memory.dmp

memory/1848-39-0x00000000000B0000-0x00000000000B6000-memory.dmp