Malware Analysis Report

2024-07-28 12:18

Sample ID 240628-21q49svbje
Target 74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca
SHA256 74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca
Tags
tinba banker persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca

Threat Level: Known bad

The file 74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca was found to be: Known bad.

Malicious Activity Summary

tinba banker persistence trojan

Tinba / TinyBanker

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Program crash

Modifies registry class

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Modifies data under HKEY_USERS

Suspicious use of WriteProcessMemory

Suspicious use of UnmapMainImage

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-28 23:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-28 23:03

Reported

2024-06-28 23:05

Platform

win7-20240508-en

Max time kernel

148s

Max time network

150s

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-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\204F42D1 = "C:\\Users\\Admin\\AppData\\Roaming\\204F42D1\\bin.exe" C:\Windows\SysWOW64\winver.exe N/A

Enumerates physical storage devices

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

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 2020 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2020 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2020 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2020 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2020 wrote to memory of 2296 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2296 wrote to memory of 1204 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2296 wrote to memory of 1128 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 2296 wrote to memory of 1172 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 2296 wrote to memory of 1204 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2296 wrote to memory of 2020 N/A C:\Windows\SysWOW64\winver.exe C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe

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\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe

"C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.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/1204-1-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/1204-6-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/2296-5-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1204-3-0x00000000025C0000-0x00000000025C6000-memory.dmp

memory/2296-4-0x0000000000160000-0x0000000000166000-memory.dmp

memory/1172-12-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1128-9-0x00000000020F0000-0x00000000020F6000-memory.dmp

memory/2296-20-0x00000000001D0000-0x00000000001D6000-memory.dmp

memory/1204-15-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/2020-22-0x0000000000400000-0x000000000043C000-memory.dmp

memory/1172-25-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1128-23-0x00000000020F0000-0x00000000020F6000-memory.dmp

memory/1204-24-0x00000000025D0000-0x00000000025D6000-memory.dmp

memory/2296-27-0x00000000001D0000-0x00000000001D6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-28 23:03

Reported

2024-06-28 23:05

Platform

win10v2004-20240611-en

Max time kernel

147s

Max time network

126s

Command Line

C:\Windows\Explorer.EXE

Signatures

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\winver.exe
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe

Modifies data under HKEY_USERS

Description Indicator Process Target
Set value (str) \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\2a\52C64B7E\@%SystemRoot%\system32\hnetcfgclient.dll,-201 = "HNetCfg Client" C:\Windows\System32\svchost.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ C:\Windows\Explorer.EXE N/A
Key created \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ C:\Windows\Explorer.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
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\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
N/A N/A C:\Windows\Explorer.EXE N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2608 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2608 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2608 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2608 wrote to memory of 2196 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\SysWOW64\winver.exe
PID 2196 wrote to memory of 3100 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 2608 wrote to memory of 3100 N/A C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.exe

"C:\Users\Admin\AppData\Local\Temp\74614bfb11da5c25f3758dd57bf1d5b08d1d1f7a8afbfcd722eb8dfb0fb784ca.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 204 -p 2196 -ip 2196

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2196 -s 300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2608 -ip 2608

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 952

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 131.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.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 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 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

memory/2608-1-0x0000000004710000-0x0000000004D68000-memory.dmp

memory/2608-2-0x0000000003D80000-0x0000000003D81000-memory.dmp

memory/3100-4-0x00000000012B0000-0x00000000012B6000-memory.dmp

memory/3100-5-0x00000000012B0000-0x00000000012B6000-memory.dmp

memory/2608-6-0x0000000000400000-0x000000000043C000-memory.dmp

memory/3100-10-0x00000000012C0000-0x00000000012C6000-memory.dmp

memory/2608-13-0x0000000004710000-0x0000000004D68000-memory.dmp