tinba | e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058c

Analysis

max time kernel
112s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 20:49

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General

Target

e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe
Size

45KB
MD5

ea105578724b591b9f8701961bfcf530
SHA1

5e02a78604c35a1d47ed6e6dc88206b62a53c72d
SHA256

e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058c
SHA512

847d3d0a02e4a9d13fa7213d5eb8590991dfc8171a96fe61166ba8bc16f5cad24c52715730ead908dc3e4ad75c8c9d8e70aec92c014a127f6f245c2c31e3fd1f
SSDEEP

768:jhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:1sWE9N5dFu53dsniQaB/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

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-1-5-21-2392887640-1187051047-2909758433-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\C20EC542 = "C:\\Users\\Admin\\AppData\\Roaming\\C20EC542\\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/4588-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4288	4836	WerFault.exe	85

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	winver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4836	winver.exe
4836	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4836	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 4836	4588	e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe	85
PID 4588 wrote to memory of 4836	4588	e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe	85
PID 4588 wrote to memory of 4836	4588	e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe	85
PID 4588 wrote to memory of 4836	4588	e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe	85
PID 4836 wrote to memory of 3424	4836	winver.exe	56
PID 4836 wrote to memory of 2620	4836	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2620

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3424
- C:\Users\Admin\AppData\Local\Temp\e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe
  "C:\Users\Admin\AppData\Local\Temp\e91a58302669ac4ee2f4dc8eb6ce7626a59608a846cd3bdbb7597ca5c394058cN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4588
- - 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:4836
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 352
      4⤵
      Program crash
      PID:4288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4836 -ip 4836
1⤵
PID:1016

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/2620-14-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3424-6-0x00007FFFEBACD000-0x00007FFFEBACE000-memory.dmp

Filesize
4KB

Download
memory/3424-3-0x0000000000DD0000-0x0000000000DD6000-memory.dmp

Filesize
24KB

Download
memory/3424-2-0x0000000000DD0000-0x0000000000DD6000-memory.dmp

Filesize
24KB

Download
memory/4588-10-0x0000000002270000-0x0000000002C70000-memory.dmp

Filesize
10.0MB

Download
memory/4588-4-0x0000000002270000-0x0000000002C70000-memory.dmp

Filesize
10.0MB

Download
memory/4588-9-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4588-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4588-1-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/4836-5-0x00000000774A2000-0x00000000774A3000-memory.dmp

Filesize
4KB

Download
memory/4836-7-0x00007FFFEBA30000-0x00007FFFEBC25000-memory.dmp

Filesize
2.0MB

Download
memory/4836-12-0x0000000002580000-0x0000000002586000-memory.dmp

Filesize
24KB

Download
memory/4836-15-0x0000000002580000-0x0000000002586000-memory.dmp

Filesize
24KB

Download