Malware Analysis Report

2024-10-19 13:24

Sample ID 240821-y8hajsserm
Target 838c81f012a9388d786a10bfa3657110N.exe
SHA256 565c1d57fb729e5c3cc8bf368706d1fcf9ac90c7365fa5e198a67904e9e3a589
Tags
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

565c1d57fb729e5c3cc8bf368706d1fcf9ac90c7365fa5e198a67904e9e3a589

Threat Level: Known bad

The file 838c81f012a9388d786a10bfa3657110N.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Enumerates physical storage devices

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Modifies data under HKEY_USERS

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-21 20:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-21 20:27

Reported

2024-08-21 20:29

Platform

win7-20240704-en

Max time kernel

118s

Max time network

124s

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-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\46D9ABDE = "C:\\Users\\Admin\\AppData\\Roaming\\46D9ABDE\\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\838c81f012a9388d786a10bfa3657110N.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

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\838c81f012a9388d786a10bfa3657110N.exe

"C:\Users\Admin\AppData\Local\Temp\838c81f012a9388d786a10bfa3657110N.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
US 8.8.8.8:53 ljjskttqximu.com udp
US 8.8.8.8:53 ljjskttqximu.net udp
US 8.8.8.8:53 ljjskttqximu.in udp
US 216.218.185.162:80 ljjskttqximu.in tcp
US 8.8.8.8:53 ljjskttqximu.ru udp
US 162.249.66.138:80 ljjskttqximu.ru tcp
US 8.8.8.8:53 fovcpylsiqvv.com udp
US 216.218.185.162:80 fovcpylsiqvv.com tcp
US 8.8.8.8:53 fovcpylsiqvv.net udp
US 8.8.8.8:53 fovcpylsiqvv.in udp
US 216.218.185.162:80 fovcpylsiqvv.in tcp
US 8.8.8.8:53 fovcpylsiqvv.ru udp
US 8.8.8.8:53 ptuvwkjgwleu.com udp
US 8.8.8.8:53 ptuvwkjgwleu.net udp
US 8.8.8.8:53 ptuvwkjgwleu.in udp
US 216.218.185.162:80 ptuvwkjgwleu.in tcp
US 8.8.8.8:53 ptuvwkjgwleu.ru udp
US 8.8.8.8:53 pxscpwnnqujq.com udp
US 8.8.8.8:53 pxscpwnnqujq.net udp
US 216.218.185.162:80 pxscpwnnqujq.net tcp
US 8.8.8.8:53 pxscpwnnqujq.in udp
US 216.218.185.162:80 pxscpwnnqujq.in tcp
US 8.8.8.8:53 pxscpwnnqujq.ru udp
US 8.8.8.8:53 pvmjyqwwugwx.com udp
US 8.8.8.8:53 pvmjyqwwugwx.net udp
US 8.8.8.8:53 pvmjyqwwugwx.in udp
US 216.218.185.162:80 pvmjyqwwugwx.in tcp
US 8.8.8.8:53 pvmjyqwwugwx.ru udp
US 8.8.8.8:53 pirckxungwkv.com udp
US 216.218.185.162:80 pirckxungwkv.com tcp
US 8.8.8.8:53 pirckxungwkv.net udp
US 8.8.8.8:53 pirckxungwkv.in udp
US 216.218.185.162:80 pirckxungwkv.in tcp
US 8.8.8.8:53 pirckxungwkv.ru udp
US 8.8.8.8:53 lyheuwwspjii.com udp
US 8.8.8.8:53 lyheuwwspjii.net udp
US 8.8.8.8:53 lyheuwwspjii.in udp
US 216.218.185.162:80 lyheuwwspjii.in tcp

Files

memory/1256-1-0x0000000002170000-0x0000000002176000-memory.dmp

memory/1256-6-0x0000000002170000-0x0000000002176000-memory.dmp

memory/2716-4-0x00000000000B0000-0x00000000000B6000-memory.dmp

memory/1256-3-0x0000000002170000-0x0000000002176000-memory.dmp

memory/2716-23-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/1884-18-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

memory/1256-15-0x0000000002D20000-0x0000000002D26000-memory.dmp

memory/332-25-0x0000000000400000-0x000000000043F000-memory.dmp

memory/1196-12-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1116-9-0x0000000002070000-0x0000000002076000-memory.dmp

memory/1116-28-0x0000000002070000-0x0000000002076000-memory.dmp

memory/1884-26-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

memory/1256-27-0x0000000002D20000-0x0000000002D26000-memory.dmp

memory/1196-29-0x0000000000130000-0x0000000000136000-memory.dmp

memory/2716-31-0x00000000001D0000-0x00000000001D6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-21 20:27

Reported

2024-08-21 20:29

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

107s

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\838c81f012a9388d786a10bfa3657110N.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\838c81f012a9388d786a10bfa3657110N.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\838c81f012a9388d786a10bfa3657110N.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\838c81f012a9388d786a10bfa3657110N.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\838c81f012a9388d786a10bfa3657110N.exe

"C:\Users\Admin\AppData\Local\Temp\838c81f012a9388d786a10bfa3657110N.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 404 -p 5044 -ip 5044

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 316

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 916 -ip 916

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 916 -s 932

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 34.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.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 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/916-1-0x0000000004640000-0x0000000004C98000-memory.dmp

memory/916-2-0x00000000025A0000-0x00000000025A1000-memory.dmp

memory/916-3-0x0000000004640000-0x0000000004C98000-memory.dmp

memory/916-4-0x00000000025A0000-0x00000000025A1000-memory.dmp

memory/3464-7-0x0000000000DC0000-0x0000000000DC6000-memory.dmp

memory/3464-6-0x0000000000DC0000-0x0000000000DC6000-memory.dmp

memory/916-8-0x0000000000400000-0x000000000043F000-memory.dmp

memory/3464-12-0x00000000028E0000-0x00000000028E6000-memory.dmp

memory/916-11-0x0000000005750000-0x0000000006150000-memory.dmp

memory/2468-15-0x0000000000E80000-0x0000000000E86000-memory.dmp

memory/916-16-0x0000000005750000-0x0000000006150000-memory.dmp

memory/916-20-0x0000000004640000-0x0000000004C98000-memory.dmp

memory/2468-21-0x0000000000E80000-0x0000000000E86000-memory.dmp