tinba | 85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03f

Analysis

max time kernel
115s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 00:18

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General

Target
85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe
Size 45KB
Sample241004-alvelathrr
SHA256 85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03f
MD5 73b7f7d42efec47c39a8b7dc89b14900
SHA1 93af7905a51d6a141e89e2ab5e87698e3fdf66f8
SHA512 e37c81c4d191033688ef1b34f7aff04fe74f594f98d64060de36ff9ddd08e0cbd9404c2886c00505b801c22471726455019fdc0ff495f52113dba5e36cfe901d
SSDEEP 768:UhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:YsWE9N5dFu53dsniQaB/xZ14n7zIF+qr
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

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\F6463749 = "C:\\Users\\Admin\\AppData\\Roaming\\F6463749\\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/5112-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4536	4040	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	85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4040	winver.exe
4040	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
4040	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 4040	5112	85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe	83
PID 5112 wrote to memory of 4040	5112	85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe	83
PID 5112 wrote to memory of 4040	5112	85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe	83
PID 5112 wrote to memory of 4040	5112	85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe	83
PID 4040 wrote to memory of 3424	4040	winver.exe	56
PID 4040 wrote to memory of 2156	4040	winver.exe	50

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2156

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3424
- C:\Users\Admin\AppData\Local\Temp\85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe
  "C:\Users\Admin\AppData\Local\Temp\85d4a4903c5e4ac891f9f38b329643626a8626151137711b5f5157c6e76dd03fN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5112
- - 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:4040
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4040 -s 352
      4⤵
      Program crash
      PID:4536

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4040 -ip 4040
1⤵
PID:2940

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/2156-13-0x00000000000A0000-0x00000000000A6000-memory.dmp

Download

memory/3424-6-0x00007FFEF212D000-0x00007FFEF212E000-memory.dmp

Download

memory/3424-3-0x00000000014B0000-0x00000000014B6000-memory.dmp

Download

memory/3424-2-0x00000000014B0000-0x00000000014B6000-memory.dmp

Download

memory/4040-5-0x00000000775F2000-0x00000000775F3000-memory.dmp

Download

memory/4040-7-0x00007FFEF2090000-0x00007FFEF2285000-memory.dmp

Download

memory/4040-11-0x0000000002340000-0x0000000002346000-memory.dmp

Download

memory/4040-14-0x0000000002340000-0x0000000002346000-memory.dmp

Download

memory/5112-4-0x0000000002100000-0x0000000002B00000-memory.dmp

Download

memory/5112-0-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/5112-8-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/5112-9-0x0000000002100000-0x0000000002B00000-memory.dmp

Download

memory/5112-1-0x0000000000580000-0x0000000000581000-memory.dmp

Download