tinba | a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654

Analysis

max time kernel
104s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/11/2024, 08:57

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General

Target
a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe
Size 160KB
Sample241123-kw35layler
SHA256 a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654
MD5 8f4fb0827a88cb504206e5e531bb9e43
SHA1 0c1c55c624d970fab4cb57acb4ccd04c5cf0b7be
SHA512 306403a13d55dfe69299b2fb4e08087b66a5eaaace2afcb272665c47c70b01fdf94f5262cc15ad23766c80621bb2aa455322912354f1c0251bba4e691ba54f7b
SSDEEP 1536:SEY+mFM2HXKZgi0Iksu+XM5/HtAQ9J6xphM:ZY+4MiIkLZJNAQ9J6ve
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
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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DB63CCEA = "C:\\Users\\Admin\\AppData\\Roaming\\DB63CCEA\\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/3836-0-0x0000000000400000-0x0000000000428000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4176	2460	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	a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2460	winver.exe
2460	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3472	Explorer.EXE
Token: SeCreatePagefilePrivilege	3472	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2460	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3836 wrote to memory of 2460	3836	a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe	84
PID 3836 wrote to memory of 2460	3836	a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe	84
PID 3836 wrote to memory of 2460	3836	a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe	84
PID 3836 wrote to memory of 2460	3836	a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe	84
PID 2460 wrote to memory of 3472	2460	winver.exe	56
PID 2460 wrote to memory of 3092	2460	winver.exe	51

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:3092

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3472
- C:\Users\Admin\AppData\Local\Temp\a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe
  "C:\Users\Admin\AppData\Local\Temp\a937fa77d341969272de40c1c9162d68138a18bd1336f2f23ba49f3d99c34654.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3836
- - 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:2460
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2460 -s 352
      4⤵
      Program crash
      PID:4176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2460 -ip 2460
1⤵
PID:4712

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/2460-5-0x0000000077122000-0x0000000077123000-memory.dmp

Download

memory/2460-14-0x0000000001290000-0x0000000001296000-memory.dmp

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memory/2460-11-0x0000000001290000-0x0000000001296000-memory.dmp

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memory/2460-7-0x00007FF9FDD90000-0x00007FF9FDF85000-memory.dmp

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memory/3092-13-0x0000000000540000-0x0000000000546000-memory.dmp

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memory/3472-2-0x0000000000570000-0x0000000000576000-memory.dmp

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memory/3472-6-0x00007FF9FDE2D000-0x00007FF9FDE2E000-memory.dmp

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memory/3472-3-0x0000000000570000-0x0000000000576000-memory.dmp

Download

memory/3836-4-0x0000000002200000-0x0000000002C00000-memory.dmp

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memory/3836-8-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3836-9-0x0000000002200000-0x0000000002C00000-memory.dmp

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memory/3836-0-0x0000000000400000-0x0000000000428000-memory.dmp

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memory/3836-1-0x0000000000500000-0x0000000000501000-memory.dmp

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