Malware Analysis Report

2024-10-19 13:24

Sample ID 240404-nsy81sdh7t
Target b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118
SHA256 8a3c975f041bcec99b0495f9e67366b68baac6d0c5deb11dd11a77270892befe
Tags
tinba banker 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

8a3c975f041bcec99b0495f9e67366b68baac6d0c5deb11dd11a77270892befe

Threat Level: Known bad

The file b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118 was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Unsigned PE

Program crash

Suspicious behavior: EnumeratesProcesses

Suspicious use of UnmapMainImage

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-04 11:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-04 11:40

Reported

2024-04-04 11:42

Platform

win7-20231129-en

Max time kernel

149s

Max time network

148s

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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\4BF86276 = "C:\\Users\\Admin\\AppData\\Roaming\\4BF86276\\bin.exe" 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
N/A N/A C:\Windows\SysWOW64\winver.exe 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
N/A N/A C:\Windows\Explorer.EXE N/A
N/A 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

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\b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118.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

Files

memory/2848-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2848-2-0x0000000001C80000-0x0000000002680000-memory.dmp

memory/840-3-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1380-1-0x00000000024B0000-0x00000000024B6000-memory.dmp

memory/1380-5-0x00000000024B0000-0x00000000024B6000-memory.dmp

memory/1380-10-0x00000000775F1000-0x00000000775F2000-memory.dmp

memory/840-9-0x00000000777A0000-0x00000000777A1000-memory.dmp

memory/840-8-0x000000007779F000-0x00000000777A1000-memory.dmp

memory/840-7-0x000000007779F000-0x00000000777A0000-memory.dmp

memory/840-6-0x00000000007E0000-0x00000000007F6000-memory.dmp

memory/2848-11-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2848-12-0x0000000001C80000-0x0000000002680000-memory.dmp

memory/840-14-0x0000000000120000-0x0000000000126000-memory.dmp

memory/840-15-0x0000000000160000-0x0000000000161000-memory.dmp

memory/1332-21-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1380-23-0x0000000002460000-0x0000000002466000-memory.dmp

memory/1248-24-0x00000000000F0000-0x00000000000F6000-memory.dmp

memory/1248-25-0x00000000775F1000-0x00000000775F2000-memory.dmp

memory/1332-26-0x0000000000150000-0x0000000000156000-memory.dmp

memory/1380-27-0x0000000002460000-0x0000000002466000-memory.dmp

memory/840-31-0x0000000000120000-0x0000000000126000-memory.dmp

memory/840-32-0x0000000000170000-0x0000000000171000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-04 11:40

Reported

2024-04-04 11:42

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

149s

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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8867A096 = "C:\\Users\\Admin\\AppData\\Roaming\\8867A096\\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

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\b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\b7620b6adf5f0bd58d84f7cde0e3dcfb_JaffaCakes118.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2512 -ip 2512

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2512 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 218.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 57.162.23.2.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 9.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 147.111.86.104.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/320-0-0x0000000000670000-0x0000000000671000-memory.dmp

memory/3444-1-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/3444-2-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/320-3-0x0000000002200000-0x0000000002C00000-memory.dmp

memory/2512-4-0x00000000779D2000-0x00000000779D3000-memory.dmp

memory/3444-5-0x00007FF9E5D8D000-0x00007FF9E5D8E000-memory.dmp

memory/2512-6-0x0000000000E70000-0x0000000000E76000-memory.dmp

memory/3444-7-0x00007FF9E5F20000-0x00007FF9E5F21000-memory.dmp

memory/320-8-0x0000000000400000-0x0000000000417000-memory.dmp

memory/2532-12-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/2512-13-0x0000000000E70000-0x0000000000E76000-memory.dmp