Malware Analysis Report

2024-09-09 17:03

Sample ID 240619-yenkgashrr
Target 233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea
SHA256 233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea

Threat Level: Known bad

The file 233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Program crash

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious use of UnmapMainImage

Modifies data under HKEY_USERS

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-19 19:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 19:42

Reported

2024-06-19 19:44

Platform

win7-20240508-en

Max time kernel

148s

Max time network

149s

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-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\2C4A9A35 = "C:\\Users\\Admin\\AppData\\Roaming\\2C4A9A35\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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

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:\Users\Admin\AppData\Local\Temp\233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea.exe

"C:\Users\Admin\AppData\Local\Temp\233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 8.8.8.8:53 elitiorecfreetoo.cc udp

Files

memory/1136-1-0x00000000024C0000-0x00000000024C6000-memory.dmp

memory/1136-6-0x00000000024C0000-0x00000000024C6000-memory.dmp

memory/2744-4-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1136-3-0x00000000024C0000-0x00000000024C6000-memory.dmp

memory/2744-20-0x0000000000210000-0x0000000000216000-memory.dmp

memory/1136-15-0x00000000029D0000-0x00000000029D6000-memory.dmp

memory/1112-12-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1056-9-0x0000000002010000-0x0000000002016000-memory.dmp

memory/1924-22-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1112-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

memory/1136-24-0x00000000029D0000-0x00000000029D6000-memory.dmp

memory/1056-23-0x0000000002010000-0x0000000002016000-memory.dmp

memory/2744-27-0x0000000000210000-0x0000000000216000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 19:42

Reported

2024-06-19 19:44

Platform

win10v2004-20240508-en

Max time kernel

130s

Max time network

70s

Command Line

sihost.exe

Signatures

Enumerates physical storage devices

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" C:\Windows\System32\svchost.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
Token: SeShutdownPrivilege N/A C:\Windows\Explorer.EXE N/A
Token: SeCreatePagefilePrivilege 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
N/A N/A C:\Windows\Explorer.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\233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea.exe

"C:\Users\Admin\AppData\Local\Temp\233b11ebeb166dbf91eb473a1de5ab744e43bee306841aee23c27a74636306ea.exe"

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s Netman

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3296 -ip 3296

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3296 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 944 -ip 944

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 944 -s 784

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp

Files

memory/944-1-0x00000000045F0000-0x0000000004C48000-memory.dmp

memory/944-2-0x00000000044F0000-0x00000000044F1000-memory.dmp

memory/3368-4-0x0000000000B30000-0x0000000000B36000-memory.dmp

memory/3368-5-0x0000000000B30000-0x0000000000B36000-memory.dmp

memory/944-6-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3368-10-0x0000000002690000-0x0000000002696000-memory.dmp

memory/944-9-0x0000000005B00000-0x0000000006500000-memory.dmp

memory/2492-12-0x0000000000800000-0x0000000000806000-memory.dmp

memory/944-13-0x0000000005B00000-0x0000000006500000-memory.dmp

memory/944-17-0x00000000045F0000-0x0000000004C48000-memory.dmp

memory/944-15-0x00000000045F0000-0x00000000056F2000-memory.dmp

memory/2492-18-0x0000000000800000-0x0000000000806000-memory.dmp