Malware Analysis Report

2025-01-19 07:38

Sample ID 241103-k3dtaazgrb
Target d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N
SHA256 d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01
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

d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01

Threat Level: Known bad

The file d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba family

Tinba / TinyBanker

Adds Run key to start application

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 09:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-03 09:07

Reported

2024-11-03 09:09

Platform

win7-20240903-en

Max time kernel

119s

Max time network

117s

Command Line

"C:\Windows\system32\Dwm.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

Tinba family

tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\7F1E4F38 = "C:\\Users\\Admin\\AppData\\Roaming\\7F1E4F38\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

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\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.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
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe N/A
N/A N/A C:\Windows\SysWOW64\winver.exe 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 2112 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe C:\Windows\SysWOW64\winver.exe
PID 2112 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe C:\Windows\SysWOW64\winver.exe
PID 2112 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe C:\Windows\SysWOW64\winver.exe
PID 2112 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe C:\Windows\SysWOW64\winver.exe
PID 2112 wrote to memory of 1660 N/A C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe C:\Windows\SysWOW64\winver.exe
PID 1660 wrote to memory of 1128 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 1660 wrote to memory of 1044 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 1660 wrote to memory of 1068 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 1660 wrote to memory of 1128 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 1660 wrote to memory of 1996 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\DllHost.exe
PID 1660 wrote to memory of 2112 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe

Processes

C:\Windows\system32\Dwm.exe

"C:\Windows\system32\Dwm.exe"

C:\Windows\system32\taskhost.exe

"taskhost.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\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe

"C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.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/2112-0-0x0000000000260000-0x0000000000262000-memory.dmp

memory/1660-3-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1128-2-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/1128-1-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/1128-5-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/2112-6-0x00000000024D0000-0x0000000002ED0000-memory.dmp

memory/1660-13-0x0000000077300000-0x00000000774A9000-memory.dmp

memory/1128-12-0x0000000077351000-0x0000000077352000-memory.dmp

memory/1660-11-0x0000000000160000-0x0000000000161000-memory.dmp

memory/1660-10-0x00000000774FF000-0x0000000077501000-memory.dmp

memory/1660-9-0x00000000774FF000-0x0000000077500000-memory.dmp

memory/1660-8-0x0000000077500000-0x0000000077501000-memory.dmp

memory/1660-7-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1996-23-0x0000000001BD0000-0x0000000001BD6000-memory.dmp

memory/2112-26-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1996-31-0x0000000001BD0000-0x0000000001BD6000-memory.dmp

memory/1128-30-0x00000000024E0000-0x00000000024E6000-memory.dmp

memory/1068-32-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1044-29-0x0000000077351000-0x0000000077352000-memory.dmp

memory/1044-28-0x0000000001E20000-0x0000000001E26000-memory.dmp

memory/1996-27-0x0000000077351000-0x0000000077352000-memory.dmp

memory/1128-21-0x00000000024E0000-0x00000000024E6000-memory.dmp

memory/1068-18-0x0000000002090000-0x0000000002096000-memory.dmp

memory/1044-15-0x0000000001E20000-0x0000000001E26000-memory.dmp

memory/2112-33-0x00000000024D0000-0x0000000002ED0000-memory.dmp

memory/1660-35-0x0000000000120000-0x0000000000126000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 09:07

Reported

2024-11-03 09:09

Platform

win10v2004-20241007-en

Max time kernel

117s

Max time network

106s

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

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\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.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

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\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe

"C:\Users\Admin\AppData\Local\Temp\d36f0b687676c4426e2190b4a9e54dd25a8f6f491de2d7f7e827c1684675be01N.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4500 -ip 4500

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4500 -s 632

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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/1256-0-0x00000000005B0000-0x00000000005B2000-memory.dmp

memory/4500-2-0x0000000001120000-0x0000000001126000-memory.dmp

memory/3572-4-0x0000000002A60000-0x0000000002A66000-memory.dmp

memory/3572-1-0x0000000002A60000-0x0000000002A66000-memory.dmp

memory/1256-5-0x0000000002500000-0x0000000002F00000-memory.dmp

memory/3572-7-0x00007FFC9CC4D000-0x00007FFC9CC4E000-memory.dmp

memory/4500-6-0x0000000077752000-0x0000000077753000-memory.dmp

memory/4500-8-0x00007FFC9CBB0000-0x00007FFC9CDA5000-memory.dmp

memory/2584-9-0x0000000000BC0000-0x0000000000BC6000-memory.dmp

memory/2584-10-0x0000000000BC0000-0x0000000000BC6000-memory.dmp

memory/1256-11-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1256-12-0x0000000002500000-0x0000000002F00000-memory.dmp

memory/4500-13-0x0000000001120000-0x0000000001126000-memory.dmp

memory/3572-15-0x00007FFC9CDE0000-0x00007FFC9CDE1000-memory.dmp

memory/2584-16-0x00007FFC9CDD0000-0x00007FFC9CDD1000-memory.dmp