tinba | b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197f

Analysis

max time kernel
107s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 23:04

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General

Target
b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe
Size 45KB
Sample240919-22r3ysware
SHA256 b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197f
MD5 79c2c016f431ec74b8c9e5e6f5cb1590
SHA1 bbd9878ec990a7607b6ab87088d3a345c3616d4f
SHA512 5da0594cb83448f19af8c43dfbc2c13c055d5ddb1d16bf184ba783b6cb681ba2afaca066484ad51803b649c3c4a49f651453703e486da118469100e006b057ad
SSDEEP 768:rhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:NsWE9N5dFu53dsniQaB/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

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2360-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\C1C0F9F5 = "C:\\Users\\Admin\\AppData\\Roaming\\C1C0F9F5\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3296	3812	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	b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3812	winver.exe
3812	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3508	Explorer.EXE
Token: SeCreatePagefilePrivilege	3508	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3812	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 3812	2360	b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe	83
PID 2360 wrote to memory of 3812	2360	b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe	83
PID 2360 wrote to memory of 3812	2360	b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe	83
PID 2360 wrote to memory of 3812	2360	b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe	83
PID 3812 wrote to memory of 3508	3812	winver.exe	56
PID 3812 wrote to memory of 2492	3812	winver.exe	42

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2492

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3508
- C:\Users\Admin\AppData\Local\Temp\b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe
  "C:\Users\Admin\AppData\Local\Temp\b31402b1e60dd6dea98e93e03b19546d1805b1cbcdd3dfc41b75d06a1033197fN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2360
- - 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:3812
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3812 -s 352
      4⤵
      Program crash
      PID:3296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3812 -ip 3812
1⤵
PID:2712

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/2360-8-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/2360-1-0x00000000004A0000-0x00000000004A1000-memory.dmp

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memory/2360-0-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/2360-4-0x0000000002120000-0x0000000002B20000-memory.dmp

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memory/2360-9-0x0000000002120000-0x0000000002B20000-memory.dmp

Download

memory/2492-13-0x0000000000EC0000-0x0000000000EC6000-memory.dmp

Download

memory/3508-2-0x0000000000D50000-0x0000000000D56000-memory.dmp

Download

memory/3508-6-0x00007FFA19B2D000-0x00007FFA19B2E000-memory.dmp

Download

memory/3508-3-0x0000000000D50000-0x0000000000D56000-memory.dmp

Download

memory/3812-7-0x00007FFA19A90000-0x00007FFA19C85000-memory.dmp

Download

memory/3812-5-0x0000000077982000-0x0000000077983000-memory.dmp

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memory/3812-11-0x0000000000DB0000-0x0000000000DB6000-memory.dmp

Download

memory/3812-14-0x0000000000DB0000-0x0000000000DB6000-memory.dmp

Download