Malware Analysis Report

2024-10-19 13:24

Sample ID 240818-srlnrazdlb
Target 8790ca66f51b006d7326d7bf742f2e50N.exe
SHA256 55113d18c872ce9d9ea3d0076cbd54ddf111a40ed61d1bcf63c94ff256ffd6fa
Tags
discovery tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

55113d18c872ce9d9ea3d0076cbd54ddf111a40ed61d1bcf63c94ff256ffd6fa

Threat Level: Known bad

The file 8790ca66f51b006d7326d7bf742f2e50N.exe was found to be: Known bad.

Malicious Activity Summary

discovery tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

System Location Discovery: System Language Discovery

Program crash

Enumerates physical storage devices

Modifies data under HKEY_USERS

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 15:21

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 15:21

Reported

2024-08-18 15:23

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

97s

Command Line

sihost.exe

Signatures

Enumerates physical storage devices

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\8790ca66f51b006d7326d7bf742f2e50N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\winver.exe N/A

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\26\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" C:\Windows\System32\svchost.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8790ca66f51b006d7326d7bf742f2e50N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\8790ca66f51b006d7326d7bf742f2e50N.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 FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\8790ca66f51b006d7326d7bf742f2e50N.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\8790ca66f51b006d7326d7bf742f2e50N.exe

"C:\Users\Admin\AppData\Local\Temp\8790ca66f51b006d7326d7bf742f2e50N.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 3092 -ip 3092

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3092 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3720 -ip 3720

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3720 -s 932

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 138.136.73.23.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 101.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/3720-1-0x00000000045A0000-0x0000000004BF8000-memory.dmp

memory/3720-2-0x00000000044E0000-0x00000000044E1000-memory.dmp

memory/3720-3-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3720-4-0x00000000045A0000-0x0000000004BF8000-memory.dmp

memory/3720-5-0x00000000044E0000-0x00000000044E1000-memory.dmp

memory/3720-6-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3720-7-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3720-8-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3720-9-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3720-10-0x0000000003D70000-0x0000000003D71000-memory.dmp

memory/3424-12-0x0000000001F00000-0x0000000001F06000-memory.dmp

memory/3424-13-0x0000000001F00000-0x0000000001F06000-memory.dmp

memory/3720-14-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3424-19-0x0000000001F60000-0x0000000001F66000-memory.dmp

memory/3720-18-0x00000000057B0000-0x00000000061B0000-memory.dmp

memory/2536-21-0x0000000000CD0000-0x0000000000CD6000-memory.dmp

memory/3720-22-0x00000000057B0000-0x00000000061B0000-memory.dmp

memory/3720-26-0x00000000045A0000-0x0000000004BF8000-memory.dmp

memory/2536-27-0x0000000000CD0000-0x0000000000CD6000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-18 15:21

Reported

2024-08-18 15:23

Platform

win7-20240708-en

Max time kernel

120s

Max time network

119s

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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\1A28F626 = "C:\\Users\\Admin\\AppData\\Roaming\\1A28F626\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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\8790ca66f51b006d7326d7bf742f2e50N.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

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\8790ca66f51b006d7326d7bf742f2e50N.exe

"C:\Users\Admin\AppData\Local\Temp\8790ca66f51b006d7326d7bf742f2e50N.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 elitiorecfreetoo.cc udp
US 216.218.185.162:80 elitiorecfreetoo.cc tcp

Files

memory/1196-3-0x0000000002E20000-0x0000000002E26000-memory.dmp

memory/1196-1-0x0000000002E20000-0x0000000002E26000-memory.dmp

memory/1196-6-0x0000000002E20000-0x0000000002E26000-memory.dmp

memory/2912-4-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1168-12-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1080-9-0x0000000000410000-0x0000000000416000-memory.dmp

memory/2088-21-0x0000000000050000-0x0000000000056000-memory.dmp

memory/2036-18-0x00000000022E0000-0x00000000022E6000-memory.dmp

memory/1196-15-0x0000000002E70000-0x0000000002E76000-memory.dmp

memory/2088-27-0x0000000000400000-0x000000000043C000-memory.dmp

memory/2036-31-0x00000000022E0000-0x00000000022E6000-memory.dmp

memory/1168-30-0x0000000000140000-0x0000000000146000-memory.dmp

memory/1080-28-0x0000000000410000-0x0000000000416000-memory.dmp

memory/1196-29-0x0000000002E70000-0x0000000002E76000-memory.dmp

memory/2912-33-0x0000000000260000-0x0000000000266000-memory.dmp