tinba | bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9f

Analysis

max time kernel
114s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 22:48

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General

Target

bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe
Size

45KB
MD5

71e095555ba3a5d57e8d48b6282759a0
SHA1

131d3b607417420e4f30d4b76c02f8913b0b93a3
SHA256

bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9f
SHA512

099e64d4fa6deb0640cb0b0d49dd5d1b6e7fa5e62c33352f5d45c7f440154580f537d51af3443bfeee2ca611d1011cb7d3e5d7638bb0f647b9a4a7e64a8dccd8
SSDEEP

768:zhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2H:lsWE9N5dFu53dsniQaB/xZ14n7zIF+qT

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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8BBEB922 = "C:\\Users\\Admin\\AppData\\Roaming\\8BBEB922\\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/1340-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1216	1692	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	bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1692	winver.exe
1692	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1692	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 1692	1340	bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe	83
PID 1340 wrote to memory of 1692	1340	bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe	83
PID 1340 wrote to memory of 1692	1340	bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe	83
PID 1340 wrote to memory of 1692	1340	bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe	83
PID 1692 wrote to memory of 3440	1692	winver.exe	56
PID 1692 wrote to memory of 2880	1692	winver.exe	49

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2880

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3440
- C:\Users\Admin\AppData\Local\Temp\bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe
  "C:\Users\Admin\AppData\Local\Temp\bc2df72fefdf6771900b86bc4366e35b367c638937162d7f7e976b49a2fd8f9fN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1340
- - 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:1692
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 352
      4⤵
      Program crash
      PID:1216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1692 -ip 1692
1⤵
PID:2204

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

Replay Monitor

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Downloads

memory/1340-9-0x00000000022D0000-0x0000000002CD0000-memory.dmp

Filesize
10.0MB

Download
memory/1340-1-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/1340-4-0x00000000022D0000-0x0000000002CD0000-memory.dmp

Filesize
10.0MB

Download
memory/1340-8-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/1340-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/1692-5-0x0000000077352000-0x0000000077353000-memory.dmp

Filesize
4KB

Download
memory/1692-7-0x00007FFC1B230000-0x00007FFC1B425000-memory.dmp

Filesize
2.0MB

Download
memory/1692-11-0x00000000025B0000-0x00000000025B6000-memory.dmp

Filesize
24KB

Download
memory/1692-14-0x00000000025B0000-0x00000000025B6000-memory.dmp

Filesize
24KB

Download
memory/2880-13-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3440-3-0x00000000007A0000-0x00000000007A6000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x00000000007A0000-0x00000000007A6000-memory.dmp

Filesize
24KB

Download
memory/3440-6-0x00007FFC1B2CD000-0x00007FFC1B2CE000-memory.dmp

Filesize
4KB

Download