tinba | 4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08ac

Analysis

max time kernel
107s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/09/2024, 15:51

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General

Target
4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe
Size 45KB
Sample240925-taj92atelr
SHA256 4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08ac
MD5 9be82ddfca66e8d5048ab3706c81e9b0
SHA1 490335e99738d6abd31ceb0886b32de2eb82f57b
SHA512 e09d4db522ec7802cdab805f5043c6094620626f3145f1de68e8e44087f650058ebcd86e7a528001424134359023cc0bd573ae06a829e6163cf99e15dd38e6fe
SSDEEP 768:ehP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:ysWE9N5dFu53dsniQaB/xZ14n7zIF+qr
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tinba banker discovery persistence trojan upx

Malware Config

Signatures

Tinba / TinyBanker
Banking trojan which uses packet sniffing to steal data.
trojan banker tinba

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3E4A77BD = "C:\\Users\\Admin\\AppData\\Roaming\\3E4A77BD\\bin.exe"	winver.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4400-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4972	1332	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1332	winver.exe
1332	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3496	Explorer.EXE
Token: SeCreatePagefilePrivilege	3496	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1332	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4400 wrote to memory of 1332	4400	4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe	83
PID 4400 wrote to memory of 1332	4400	4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe	83
PID 4400 wrote to memory of 1332	4400	4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe	83
PID 4400 wrote to memory of 1332	4400	4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe	83
PID 1332 wrote to memory of 3496	1332	winver.exe	56
PID 1332 wrote to memory of 2772	1332	winver.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2772

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3496
- C:\Users\Admin\AppData\Local\Temp\4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe
  "C:\Users\Admin\AppData\Local\Temp\4ff626427a938ad7e01ec70ac45c2512e4cf2ad8b2c2d3b3d6bfc9ca84de08acN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4400
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:1332
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 352
      4⤵
      Program crash
      PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1332 -ip 1332
1⤵
PID:5000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1332-11-0x0000000001180000-0x0000000001186000-memory.dmp

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memory/1332-14-0x0000000001180000-0x0000000001186000-memory.dmp

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memory/1332-5-0x00000000779C2000-0x00000000779C3000-memory.dmp

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memory/1332-7-0x00007FFE15D10000-0x00007FFE15F05000-memory.dmp

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memory/2772-13-0x0000000000E80000-0x0000000000E86000-memory.dmp

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memory/3496-3-0x0000000000D90000-0x0000000000D96000-memory.dmp

Download

memory/3496-2-0x0000000000D90000-0x0000000000D96000-memory.dmp

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memory/3496-6-0x00007FFE15DAD000-0x00007FFE15DAE000-memory.dmp

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memory/4400-4-0x0000000002140000-0x0000000002B40000-memory.dmp

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memory/4400-9-0x0000000002140000-0x0000000002B40000-memory.dmp

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memory/4400-8-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/4400-0-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/4400-1-0x0000000000570000-0x0000000000571000-memory.dmp

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