tinba | f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034ca

Analysis

max time kernel
102s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20/09/2024, 20:10

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General

Target

f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe
Size

34KB
MD5

def73e0c17db0db42815ef3c1a2abc80
SHA1

77b17eaf08f9921594099d891a3221e2adadb372
SHA256

f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034ca
SHA512

fdfcc87c769965969451dd40ed79d16af6557b2109091f20d99211a70ad5f0965e781051b865cb618fbdb84f72e23a47daa6bd4fd03e822fe49c758271070bc0
SSDEEP

768:Np22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:NpYoX58z1uirL98xMWnT0OQ9J2

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

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4824-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx

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-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6438B158 = "C:\\Users\\Admin\\AppData\\Roaming\\6438B158\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2880	2448	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	f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2448	winver.exe
2448	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3396	Explorer.EXE
Token: SeCreatePagefilePrivilege	3396	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2448	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4824 wrote to memory of 2448	4824	f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe	83
PID 4824 wrote to memory of 2448	4824	f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe	83
PID 4824 wrote to memory of 2448	4824	f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe	83
PID 4824 wrote to memory of 2448	4824	f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe	83
PID 2448 wrote to memory of 3396	2448	winver.exe	56
PID 2448 wrote to memory of 2640	2448	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2640

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3396
- C:\Users\Admin\AppData\Local\Temp\f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe
  "C:\Users\Admin\AppData\Local\Temp\f821a34ac3ecac67ef5a7a73e4d3007ea9de6095e99480837c66860e64e034caN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4824
- - 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:2448
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2448 -s 352
      4⤵
      Program crash
      PID:2880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2448 -ip 2448
1⤵
PID:5072

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/2448-5-0x0000000077392000-0x0000000077393000-memory.dmp

Filesize
4KB

Download
memory/2448-14-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/2448-11-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/2448-7-0x00007FF9142D0000-0x00007FF9144C5000-memory.dmp

Filesize
2.0MB

Download
memory/2640-13-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/3396-2-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/3396-6-0x00007FF91436D000-0x00007FF91436E000-memory.dmp

Filesize
4KB

Download
memory/3396-3-0x0000000000820000-0x0000000000826000-memory.dmp

Filesize
24KB

Download
memory/4824-4-0x0000000002200000-0x0000000002C00000-memory.dmp

Filesize
10.0MB

Download
memory/4824-8-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4824-9-0x0000000002200000-0x0000000002C00000-memory.dmp

Filesize
10.0MB

Download
memory/4824-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/4824-1-0x00000000005B0000-0x00000000005B1000-memory.dmp

Filesize
4KB

Download