tinba | 21b05bf5471df9b39b3fcd64019cd5ff58788f751f63c8796fdf2e94e0582638

General

Target

301686205aa09ad1ca77acbc4954afe0N.exe
Size

45KB
MD5

301686205aa09ad1ca77acbc4954afe0
SHA1

deb61660c98af83b52828fdce9dc1215d7355027
SHA256

21b05bf5471df9b39b3fcd64019cd5ff58788f751f63c8796fdf2e94e0582638
SHA512

94396d415d45c9d1e2cf7fa765c03c6a8c4145cc0b009f43478941b29459b9daa11fdf251b3f6717a2a657d7566537e38f4f9ad992e781032f4dd82b2b0e7386
SSDEEP

768:AhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:8sWE9N5dFu53dsniQaB/xZ14n7zIF+qr

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/4572-0-0x0000000000400000-0x000000000041D000-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-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9346CA74 = "C:\\Users\\Admin\\AppData\\Roaming\\9346CA74\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3212	4964	WerFault.exe	86

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	301686205aa09ad1ca77acbc4954afe0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4964	winver.exe
4964	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3588	Explorer.EXE
Token: SeCreatePagefilePrivilege	3588	Explorer.EXE

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4964	winver.exe
3588	Explorer.EXE
3588	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3588	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 4964	4572	301686205aa09ad1ca77acbc4954afe0N.exe	86
PID 4572 wrote to memory of 4964	4572	301686205aa09ad1ca77acbc4954afe0N.exe	86
PID 4572 wrote to memory of 4964	4572	301686205aa09ad1ca77acbc4954afe0N.exe	86
PID 4572 wrote to memory of 4964	4572	301686205aa09ad1ca77acbc4954afe0N.exe	86
PID 4964 wrote to memory of 3588	4964	winver.exe	56
PID 4964 wrote to memory of 2580	4964	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2580

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
PID:3588
- C:\Users\Admin\AppData\Local\Temp\301686205aa09ad1ca77acbc4954afe0N.exe
  "C:\Users\Admin\AppData\Local\Temp\301686205aa09ad1ca77acbc4954afe0N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4572
- - 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:4964
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4964 -s 356
      4⤵
      Program crash
      PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4964 -ip 4964
1⤵
PID:2504

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2580-15-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3588-8-0x00007FF8C5FE0000-0x00007FF8C5FE1000-memory.dmp

Filesize
4KB

Download
memory/3588-3-0x0000000002820000-0x0000000002826000-memory.dmp

Filesize
24KB

Download
memory/3588-2-0x0000000002820000-0x0000000002826000-memory.dmp

Filesize
24KB

Download
memory/3588-11-0x00007FF8C5FC0000-0x00007FF8C5FC1000-memory.dmp

Filesize
4KB

Download
memory/3588-6-0x00007FF8C5E4D000-0x00007FF8C5E4E000-memory.dmp

Filesize
4KB

Download
memory/4572-9-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4572-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4572-10-0x0000000002330000-0x0000000002D30000-memory.dmp

Filesize
10.0MB

Download
memory/4572-4-0x0000000002330000-0x0000000002D30000-memory.dmp

Filesize
10.0MB

Download
memory/4572-1-0x0000000000560000-0x0000000000561000-memory.dmp

Filesize
4KB

Download
memory/4964-7-0x00007FF8C5DB0000-0x00007FF8C5FA5000-memory.dmp

Filesize
2.0MB

Download
memory/4964-5-0x0000000077812000-0x0000000077813000-memory.dmp

Filesize
4KB

Download
memory/4964-13-0x0000000000D50000-0x0000000000D56000-memory.dmp

Filesize
24KB

Download
memory/4964-16-0x0000000000D50000-0x0000000000D56000-memory.dmp

Filesize
24KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads