tinba | 4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607c

Analysis

max time kernel
106s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 11:38

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General

Target

4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe
Size

34KB
MD5

d7e9e428085f0d3b894f9111601f92b0
SHA1

ffd172d105fce6c75e1012bb811af8e7021d07c1
SHA256

4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607c
SHA512

3a5fa52b1b871aa4433d2cc482431cd1511924038a05f1dca5b71008cef6fc25f8a788c190de887d364f1952e8abe86d73452926d35909ed60ac29bcb8f48e5c
SSDEEP

768:xp22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9Jy:xpYoX58z1uirL98xMWnT0OQ9Jy

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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5E83D609 = "C:\\Users\\Admin\\AppData\\Roaming\\5E83D609\\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/2344-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4620	1924	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	4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1924	winver.exe
1924	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3464	Explorer.EXE
Token: SeCreatePagefilePrivilege	3464	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1924	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 1924	2344	4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe	83
PID 2344 wrote to memory of 1924	2344	4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe	83
PID 2344 wrote to memory of 1924	2344	4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe	83
PID 2344 wrote to memory of 1924	2344	4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe	83
PID 1924 wrote to memory of 3464	1924	winver.exe	56
PID 1924 wrote to memory of 2616	1924	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2616

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3464
- C:\Users\Admin\AppData\Local\Temp\4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe
  "C:\Users\Admin\AppData\Local\Temp\4a92e331d6082c60fd00a0496c5e29b6a404e6eb793258ddbce25d1cf700607cN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2344
- - 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:1924
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 352
      4⤵
      Program crash
      PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1924 -ip 1924
1⤵
PID:3344

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/1924-6-0x00000000777B2000-0x00000000777B3000-memory.dmp

Filesize
4KB

Download
memory/1924-15-0x0000000000C20000-0x0000000000C26000-memory.dmp

Filesize
24KB

Download
memory/1924-8-0x00007FFE0D550000-0x00007FFE0D745000-memory.dmp

Filesize
2.0MB

Download
memory/1924-5-0x0000000000C20000-0x0000000000C26000-memory.dmp

Filesize
24KB

Download
memory/2344-9-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2344-4-0x0000000002250000-0x0000000002C50000-memory.dmp

Filesize
10.0MB

Download
memory/2344-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2344-10-0x0000000002250000-0x0000000002C50000-memory.dmp

Filesize
10.0MB

Download
memory/2344-1-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/2616-14-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/3464-7-0x00007FFE0D5ED000-0x00007FFE0D5EE000-memory.dmp

Filesize
4KB

Download
memory/3464-2-0x0000000000C70000-0x0000000000C76000-memory.dmp

Filesize
24KB

Download
memory/3464-3-0x0000000000C70000-0x0000000000C76000-memory.dmp

Filesize
24KB

Download