tinba | 4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36

Analysis

max time kernel
106s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/12/2024, 01:30

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General

Target

4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe
Size

34KB
MD5

a11e144cf9a1b4391f65cb164e00db80
SHA1

4ed9bf8d881b704f67d3996f61b879d646d57d34
SHA256

4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36
SHA512

e2a6376aa01d5a78c1d8e56bb3aabe9c82f835598776ca0221150c73fe972c47eadcc11a69ff1668d32d429f09be22c746539a5ab2066ec54d06348f1823c9fe
SSDEEP

768:sp22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9Jy:spYoX58z1uirL98xMWnT0OQ9Jy

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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\41AA5F91 = "C:\\Users\\Admin\\AppData\\Roaming\\41AA5F91\\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/996-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1568	3300	WerFault.exe	84

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	4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3300	winver.exe
3300	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3544	Explorer.EXE
Token: SeCreatePagefilePrivilege	3544	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3300	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 996 wrote to memory of 3300	996	4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe	84
PID 996 wrote to memory of 3300	996	4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe	84
PID 996 wrote to memory of 3300	996	4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe	84
PID 996 wrote to memory of 3300	996	4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe	84
PID 3300 wrote to memory of 3544	3300	winver.exe	56
PID 3300 wrote to memory of 2540	3300	winver.exe	42

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2540

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3544
- C:\Users\Admin\AppData\Local\Temp\4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe
  "C:\Users\Admin\AppData\Local\Temp\4e1cb7f8d62307cde20e1fcf36c928975e4781ca3689267d30762e15e9503a36N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:996
- - 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:3300
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3300 -s 352
      4⤵
      Program crash
      PID:1568

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3300 -ip 3300
1⤵
PID:2568

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/996-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/996-1-0x0000000002160000-0x0000000002161000-memory.dmp

Filesize
4KB

Download
memory/996-9-0x0000000002200000-0x0000000002C00000-memory.dmp

Filesize
10.0MB

Download
memory/996-4-0x0000000002200000-0x0000000002C00000-memory.dmp

Filesize
10.0MB

Download
memory/996-8-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2540-13-0x0000000000E40000-0x0000000000E46000-memory.dmp

Filesize
24KB

Download
memory/3300-5-0x0000000077E92000-0x0000000077E93000-memory.dmp

Filesize
4KB

Download
memory/3300-7-0x00007FFA7C5D0000-0x00007FFA7C7C5000-memory.dmp

Filesize
2.0MB

Download
memory/3300-11-0x0000000000E30000-0x0000000000E36000-memory.dmp

Filesize
24KB

Download
memory/3300-14-0x0000000000E30000-0x0000000000E36000-memory.dmp

Filesize
24KB

Download
memory/3544-6-0x00007FFA7C66D000-0x00007FFA7C66E000-memory.dmp

Filesize
4KB

Download
memory/3544-3-0x0000000001150000-0x0000000001156000-memory.dmp

Filesize
24KB

Download
memory/3544-2-0x0000000001150000-0x0000000001156000-memory.dmp

Filesize
24KB

Download