Malware Analysis Report

2024-10-19 13:24

Sample ID 240822-3pkzjstfmd
Target b83608d57505af4b96a42b4d3d590e00N.exe
SHA256 2bb8c08f221668c006ada1625129c7c044a67de4006910254da84ca0de9f1c7c
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: 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

2bb8c08f221668c006ada1625129c7c044a67de4006910254da84ca0de9f1c7c

Threat Level: Known bad

The file b83608d57505af4b96a42b4d3d590e00N.exe was found to be: Known bad.

Malicious Activity Summary

tinba banker discovery persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Program crash

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-22 23:41

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-22 23:41

Reported

2024-08-22 23:43

Platform

win10v2004-20240802-en

Max time kernel

118s

Max time network

108s

Command Line

sihost.exe

Signatures

Tinba / TinyBanker

trojan banker tinba

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\551323CA = "C:\\Users\\Admin\\AppData\\Roaming\\551323CA\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

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\b83608d57505af4b96a42b4d3d590e00N.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\b83608d57505af4b96a42b4d3d590e00N.exe

"C:\Users\Admin\AppData\Local\Temp\b83608d57505af4b96a42b4d3d590e00N.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4948 -ip 4948

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4948 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.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 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/1168-0-0x0000000000400000-0x000000000041C000-memory.dmp

memory/1168-1-0x00000000005C0000-0x00000000005C1000-memory.dmp

memory/3456-2-0x0000000002420000-0x0000000002426000-memory.dmp

memory/3456-3-0x0000000002420000-0x0000000002426000-memory.dmp

memory/1168-4-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/3456-7-0x00007FF8F7A4C000-0x00007FF8F7A4D000-memory.dmp

memory/3456-6-0x00007FF8F7A4D000-0x00007FF8F7A4E000-memory.dmp

memory/4948-5-0x0000000077A22000-0x0000000077A23000-memory.dmp

memory/4948-8-0x00007FF8F79B0000-0x00007FF8F7BA5000-memory.dmp

memory/3456-9-0x00007FF8F7BE0000-0x00007FF8F7BE1000-memory.dmp

memory/1168-11-0x0000000000400000-0x000000000041C000-memory.dmp

memory/1168-12-0x00000000021C0000-0x0000000002BC0000-memory.dmp

memory/4948-14-0x00000000013A0000-0x00000000013A6000-memory.dmp

memory/2632-16-0x0000000000CD0000-0x0000000000CD6000-memory.dmp

memory/4948-17-0x00000000013A0000-0x00000000013A6000-memory.dmp

memory/2632-19-0x00007FF8F7BD0000-0x00007FF8F7BD1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-22 23:41

Reported

2024-08-22 23:43

Platform

win7-20240705-en

Max time kernel

118s

Max time network

117s

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-1-5-21-1385883288-3042840365-2734249351-1000\Software\Microsoft\Windows\CurrentVersion\Run\1D9360A7 = "C:\\Users\\Admin\\AppData\\Roaming\\1D9360A7\\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:\Windows\SysWOW64\winver.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\b83608d57505af4b96a42b4d3d590e00N.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

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\b83608d57505af4b96a42b4d3d590e00N.exe

"C:\Users\Admin\AppData\Local\Temp\b83608d57505af4b96a42b4d3d590e00N.exe"

C:\Windows\SysWOW64\winver.exe

winver

Network

Country Destination Domain Proto
US 8.8.8.8:53 spaines.pw udp
US 216.218.185.162:80 spaines.pw tcp
US 8.8.8.8:53 uyhgqunqkxnx.pw udp
US 104.131.68.180:80 uyhgqunqkxnx.pw tcp
US 8.8.8.8:53 vcklmnnejwxx.pw udp
US 216.218.185.162:80 vcklmnnejwxx.pw tcp
US 8.8.8.8:53 cmnsgscccrej.pw udp
US 216.218.185.162:80 cmnsgscccrej.pw tcp
US 8.8.8.8:53 evbsdqvgmpph.pw udp
US 216.218.185.162:80 evbsdqvgmpph.pw tcp

Files

memory/2040-0-0x0000000000400000-0x000000000041C000-memory.dmp

memory/2040-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1380-4-0x0000000002950000-0x0000000002956000-memory.dmp

memory/1380-3-0x0000000002950000-0x0000000002956000-memory.dmp

memory/1380-2-0x0000000002950000-0x0000000002956000-memory.dmp

memory/2040-5-0x0000000001D80000-0x0000000002780000-memory.dmp

memory/1380-10-0x00000000777D1000-0x00000000777D2000-memory.dmp

memory/2368-9-0x000000007797F000-0x0000000077981000-memory.dmp

memory/2368-8-0x000000007797F000-0x0000000077980000-memory.dmp

memory/2368-7-0x0000000077980000-0x0000000077981000-memory.dmp

memory/2368-6-0x00000000000F0000-0x00000000000F6000-memory.dmp

memory/2368-11-0x0000000077780000-0x0000000077929000-memory.dmp

memory/2040-12-0x0000000000400000-0x000000000041C000-memory.dmp

memory/2040-13-0x0000000001D80000-0x0000000002780000-memory.dmp

memory/1052-28-0x0000000001F70000-0x0000000001F76000-memory.dmp

memory/1324-25-0x00000000777D1000-0x00000000777D2000-memory.dmp

memory/1228-24-0x00000000777D1000-0x00000000777D2000-memory.dmp

memory/1228-23-0x0000000001F00000-0x0000000001F06000-memory.dmp

memory/1380-22-0x0000000002900000-0x0000000002906000-memory.dmp

memory/1324-20-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1324-29-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1380-30-0x0000000002900000-0x0000000002906000-memory.dmp

memory/1052-32-0x00000000777D1000-0x00000000777D2000-memory.dmp

memory/1052-31-0x0000000001F70000-0x0000000001F76000-memory.dmp