Malware Analysis Report

2024-07-28 12:41

Sample ID 240613-31ksxszfqk
Target 6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3
SHA256 6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3
Tags
upx 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

6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3

Threat Level: Known bad

The file 6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3 was found to be: Known bad.

Malicious Activity Summary

upx tinba banker persistence trojan

UPX dump on OEP (original entry point)

Tinba / TinyBanker

UPX dump on OEP (original entry point)

UPX packed file

Adds Run key to start application

Program crash

Unsigned PE

Suspicious use of UnmapMainImage

Suspicious use of AdjustPrivilegeToken

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

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
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-13 23:58

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 23:58

Reported

2024-06-14 00:01

Platform

win7-20240221-en

Max time kernel

149s

Max time network

149s

Command Line

"taskhost.exe"

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX dump on OEP (original entry point)

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

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\4B1FE9C9 = "C:\\Users\\Admin\\AppData\\Roaming\\4B1FE9C9\\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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 1752 wrote to memory of 1192 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 1752 wrote to memory of 1072 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\taskhost.exe
PID 1752 wrote to memory of 1152 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\Dwm.exe
PID 1752 wrote to memory of 1192 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.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\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe

"C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.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/1848-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1848-1-0x0000000000020000-0x0000000000021000-memory.dmp

memory/1192-4-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/1192-3-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/1192-2-0x00000000024D0000-0x00000000024D6000-memory.dmp

memory/1752-11-0x0000000077240000-0x00000000773E9000-memory.dmp

memory/1192-10-0x0000000077291000-0x0000000077292000-memory.dmp

memory/1752-9-0x000000007743F000-0x0000000077441000-memory.dmp

memory/1752-8-0x000000007743F000-0x0000000077440000-memory.dmp

memory/1752-7-0x0000000077440000-0x0000000077441000-memory.dmp

memory/1752-6-0x0000000000120000-0x0000000000126000-memory.dmp

memory/1848-5-0x0000000001DD0000-0x00000000027D0000-memory.dmp

memory/1848-12-0x0000000000400000-0x000000000041D000-memory.dmp

memory/1848-13-0x0000000001DD0000-0x00000000027D0000-memory.dmp

memory/1192-22-0x0000000002480000-0x0000000002486000-memory.dmp

memory/1152-20-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1072-24-0x0000000077291000-0x0000000077292000-memory.dmp

memory/1072-23-0x0000000000390000-0x0000000000396000-memory.dmp

memory/1152-25-0x0000000000130000-0x0000000000136000-memory.dmp

memory/1192-26-0x0000000002480000-0x0000000002486000-memory.dmp

memory/1752-30-0x0000000000120000-0x0000000000126000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 23:58

Reported

2024-06-14 00:01

Platform

win10v2004-20240611-en

Max time kernel

146s

Max time network

132s

Command Line

sihost.exe

Signatures

Tinba / TinyBanker

trojan banker tinba

UPX dump on OEP (original entry point)

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

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3665033694-1447845302-680750983-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CA70E73B = "C:\\Users\\Admin\\AppData\\Roaming\\CA70E73B\\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
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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4544 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 4544 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 4544 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 4544 wrote to memory of 384 N/A C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe C:\Windows\SysWOW64\winver.exe
PID 384 wrote to memory of 3448 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\Explorer.EXE
PID 384 wrote to memory of 2912 N/A C:\Windows\SysWOW64\winver.exe C:\Windows\system32\sihost.exe

Processes

C:\Windows\system32\sihost.exe

sihost.exe

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe

"C:\Users\Admin\AppData\Local\Temp\6ce74ceeb4a121b9c8d9ef84e5d3579d8c45ae904b5bb95c80b4d32f864d07a3.exe"

C:\Windows\SysWOW64\winver.exe

winver

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3060,i,3595107284059830391,18018199024659337217,262144 --variations-seed-version --mojo-platform-channel-handle=4308 /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 384 -ip 384

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 384 -s 352

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4544-0-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4544-1-0x0000000000580000-0x0000000000581000-memory.dmp

memory/3448-3-0x0000000000950000-0x0000000000956000-memory.dmp

memory/3448-2-0x0000000000950000-0x0000000000956000-memory.dmp

memory/4544-4-0x0000000002150000-0x0000000002B50000-memory.dmp

memory/384-5-0x00000000775B2000-0x00000000775B3000-memory.dmp

memory/3448-6-0x00007FFCCF50D000-0x00007FFCCF50E000-memory.dmp

memory/384-7-0x00007FFCCF470000-0x00007FFCCF665000-memory.dmp

memory/3448-8-0x00007FFCCF6A0000-0x00007FFCCF6A1000-memory.dmp

memory/4544-10-0x0000000000400000-0x000000000041D000-memory.dmp

memory/4544-11-0x0000000002150000-0x0000000002B50000-memory.dmp

memory/384-13-0x00000000022F0000-0x00000000022F6000-memory.dmp

memory/2912-15-0x0000000000290000-0x0000000000296000-memory.dmp

memory/384-16-0x00000000022F0000-0x00000000022F6000-memory.dmp