tinba | 69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eec

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 11:02

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General

Target
69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe
Size 45KB
Sample241004-m49cpavbja
SHA256 69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eec
MD5 e98783bc576eb930a68e9470994973b0
SHA1 f70710dbf554cec92feb37765e751cd241555767
SHA512 8d29cba0ecc02c7ae523d171b58ac59c25521ec4ff9a3bb4a993f9531f63c8d63f6f47e125e5ebd36f00b17c9dbc9961d91953f185b3e7110119342c1c9d1aec
SSDEEP 768:fhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:JsWE9N5dFu53dsniQaB/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-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\672EEACE = "C:\\Users\\Admin\\AppData\\Roaming\\672EEACE\\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/3944-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3956	4676	WerFault.exe	82

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	69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4676	winver.exe
4676	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3376	Explorer.EXE
Token: SeCreatePagefilePrivilege	3376	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4676	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3944 wrote to memory of 4676	3944	69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe	82
PID 3944 wrote to memory of 4676	3944	69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe	82
PID 3944 wrote to memory of 4676	3944	69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe	82
PID 3944 wrote to memory of 4676	3944	69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe	82
PID 4676 wrote to memory of 3376	4676	winver.exe	56
PID 4676 wrote to memory of 852	4676	winver.exe	51

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:852

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3376
- C:\Users\Admin\AppData\Local\Temp\69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe
  "C:\Users\Admin\AppData\Local\Temp\69621b4a9c14403a9f613b7a552a5770db20acac3465d029d2684e5e50fa0eecN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3944
- - 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:4676
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4676 -s 352
      4⤵
      Program crash
      PID:3956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 4676 -ip 4676
1⤵
PID:3340

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/852-13-0x0000000000280000-0x0000000000286000-memory.dmp

Download

memory/3376-6-0x00007FFA1CB2D000-0x00007FFA1CB2E000-memory.dmp

Download

memory/3376-2-0x0000000000B60000-0x0000000000B66000-memory.dmp

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memory/3376-3-0x0000000000B60000-0x0000000000B66000-memory.dmp

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memory/3944-4-0x0000000002200000-0x0000000002C00000-memory.dmp

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memory/3944-0-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/3944-8-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/3944-9-0x0000000002200000-0x0000000002C00000-memory.dmp

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memory/3944-1-0x0000000000570000-0x0000000000571000-memory.dmp

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memory/4676-5-0x0000000077572000-0x0000000077573000-memory.dmp

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memory/4676-7-0x00007FFA1CA90000-0x00007FFA1CC85000-memory.dmp

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memory/4676-11-0x0000000000780000-0x0000000000786000-memory.dmp

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memory/4676-14-0x0000000000780000-0x0000000000786000-memory.dmp

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