tinba | 8a0c54c501e51c87577ddc66548d6310dae82f51750860bc70735c34f2d9ba5d

Analysis

max time kernel
118s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
28/07/2024, 02:25

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General

Target
3850d703b0f10ac5a444076e602f2fa0N.exe
Size 106KB
Sample240728-cwmhvasgrp
SHA256 8a0c54c501e51c87577ddc66548d6310dae82f51750860bc70735c34f2d9ba5d
MD5 3850d703b0f10ac5a444076e602f2fa0
SHA1 91c5a38ed38ce210f71ef1f4eb7a23be307116b3
SHA512 b4a0eb14b6750b68cda938d6ad0bebfd852f0e8cd7411253a8388f895ca43d17043f5e4a99b743ed639cba633eea6f510cd1bb4c826c4b0c95b15bec88404802
SSDEEP 768:j+6p+OMlgGXCWhfDzU7f0JDgi9I57+sByZ+XsfXpwtG9ipelU9JA:j+mFM2QXtZgi9Iksu+XM57ipeq9JA
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tinba banker discovery persistence trojan

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-1-5-21-384068567-2943195810-3631207890-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\A5810680 = "C:\\Users\\Admin\\AppData\\Roaming\\A5810680\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4924	4792	WerFault.exe	84

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	3850d703b0f10ac5a444076e602f2fa0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4792	winver.exe
4792	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3604	Explorer.EXE
Token: SeCreatePagefilePrivilege	3604	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4792	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3604	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3912 wrote to memory of 4792	3912	3850d703b0f10ac5a444076e602f2fa0N.exe	84
PID 3912 wrote to memory of 4792	3912	3850d703b0f10ac5a444076e602f2fa0N.exe	84
PID 3912 wrote to memory of 4792	3912	3850d703b0f10ac5a444076e602f2fa0N.exe	84
PID 3912 wrote to memory of 4792	3912	3850d703b0f10ac5a444076e602f2fa0N.exe	84
PID 4792 wrote to memory of 3604	4792	winver.exe	56
PID 4792 wrote to memory of 2528	4792	winver.exe	42

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2528

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3604
- C:\Users\Admin\AppData\Local\Temp\3850d703b0f10ac5a444076e602f2fa0N.exe
  "C:\Users\Admin\AppData\Local\Temp\3850d703b0f10ac5a444076e602f2fa0N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3912
- - 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:4792
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 352
      4⤵
      Program crash
      PID:4924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4792 -ip 4792
1⤵
PID:3700

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

Replay Monitor

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Downloads

memory/2528-20-0x00007FF8C0D30000-0x00007FF8C0D31000-memory.dmp

Download

memory/2528-17-0x0000000000010000-0x0000000000016000-memory.dmp

Download

memory/3604-13-0x00007FF8C0D40000-0x00007FF8C0D41000-memory.dmp

Download

memory/3604-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Download

memory/3604-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Download

memory/3604-8-0x00007FF8C0BAC000-0x00007FF8C0BAD000-memory.dmp

Download

memory/3604-7-0x00007FF8C0BAD000-0x00007FF8C0BAE000-memory.dmp

Download

memory/3912-4-0x00000000022B0000-0x0000000002CB0000-memory.dmp

Download

memory/3912-11-0x0000000000400000-0x000000000041C000-memory.dmp

Download

memory/3912-12-0x00000000022B0000-0x0000000002CB0000-memory.dmp

Download

memory/3912-0-0x0000000000400000-0x000000000041C000-memory.dmp

Download

memory/3912-1-0x0000000000530000-0x0000000000531000-memory.dmp

Download

memory/4792-5-0x00000000005C0000-0x00000000005C6000-memory.dmp

Download

memory/4792-9-0x00007FF8C0B10000-0x00007FF8C0D05000-memory.dmp

Download

memory/4792-6-0x0000000077D12000-0x0000000077D13000-memory.dmp

Download

memory/4792-18-0x00000000005C0000-0x00000000005C6000-memory.dmp

Download