tinba | a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812

Analysis

max time kernel
105s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22/11/2024, 18:13

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General

Target
a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe
Size 88KB
Sample241122-wt131avrez
SHA256 a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812
MD5 04b288ff9e1172e5dc8c66953299c5e1
SHA1 225d855669b2aba9fd941e12a3066649cd0a5abb
SHA512 316c2b3966772cfa776e08f37fcc8e6fdb54c98cd842ce83793ce2388008a13e632075b6700cf46f93d993db9119464364565d3d01834d5ddc886631b80ab7ed
SSDEEP 1536:S5nfmIpxDWbUfd3aOPmxxEhvgCooXqRQqjh+rmKVsNI:S5fvp12UFKcD/6jwqWsNI
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
Tinba family
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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\52BDFB85 = "C:\\Users\\Admin\\AppData\\Roaming\\52BDFB85\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2584	4256	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	a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4256	winver.exe
4256	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3432	Explorer.EXE
Token: SeCreatePagefilePrivilege	3432	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4256	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 4256	4696	a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe	83
PID 4696 wrote to memory of 4256	4696	a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe	83
PID 4696 wrote to memory of 4256	4696	a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe	83
PID 4696 wrote to memory of 4256	4696	a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe	83
PID 4256 wrote to memory of 3432	4256	winver.exe	56
PID 4256 wrote to memory of 2868	4256	winver.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2868

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3432
- C:\Users\Admin\AppData\Local\Temp\a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe
  "C:\Users\Admin\AppData\Local\Temp\a33f774c4c7a216d73d536fa208965e53f85f4e65a060b2d178a09d075468812.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4696
- - 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:4256
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4256 -s 352
      4⤵
      Program crash
      PID:2584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4256 -ip 4256
1⤵
PID:5116

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/2868-12-0x0000000000540000-0x0000000000546000-memory.dmp

Download

memory/3432-2-0x0000000000560000-0x0000000000566000-memory.dmp

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memory/3432-1-0x0000000000560000-0x0000000000566000-memory.dmp

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memory/3432-5-0x00007FFB8760D000-0x00007FFB8760E000-memory.dmp

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memory/4256-4-0x0000000077562000-0x0000000077563000-memory.dmp

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memory/4256-6-0x00007FFB87570000-0x00007FFB87765000-memory.dmp

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memory/4256-10-0x0000000000D90000-0x0000000000D96000-memory.dmp

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memory/4256-13-0x0000000000D90000-0x0000000000D96000-memory.dmp

Download

memory/4696-0-0x0000000000580000-0x0000000000581000-memory.dmp

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memory/4696-3-0x0000000002060000-0x0000000002A60000-memory.dmp

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memory/4696-7-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/4696-8-0x0000000002060000-0x0000000002A60000-memory.dmp

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