tinba | 37a6c1bea877dfa5a2bde2a6c6e1aedb1ef876ee4757e18bbbb44b067db1cbae

Analysis

max time kernel
118s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/08/2024, 17:01

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General

Target
f4b8018e0f34f3c285ed662d5ed20510N.exe
Size 45KB
Sample240804-vjld5avcjf
SHA256 37a6c1bea877dfa5a2bde2a6c6e1aedb1ef876ee4757e18bbbb44b067db1cbae
MD5 f4b8018e0f34f3c285ed662d5ed20510
SHA1 b42fa2e88ac9867dccd5ea2b7cde46609939d37a
SHA512 abdee64bc72906a774888551f293032be9f99289a0cfaa4cb1828bc0fa2ef790f62335fcb698841f1e3a30d14283f64f264e20999307602436f822c7e326abc6
SSDEEP 768:JhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:TsWE9N5dFu53dsniQaB/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

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4992-0-0x0000000000400000-0x000000000041D000-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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\F2D4E480 = "C:\\Users\\Admin\\AppData\\Roaming\\F2D4E480\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2976	2636	WerFault.exe	87

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	f4b8018e0f34f3c285ed662d5ed20510N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2636	winver.exe
2636	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3432	Explorer.EXE
Token: SeCreatePagefilePrivilege	3432	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2636	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3432	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 2636	4992	f4b8018e0f34f3c285ed662d5ed20510N.exe	87
PID 4992 wrote to memory of 2636	4992	f4b8018e0f34f3c285ed662d5ed20510N.exe	87
PID 4992 wrote to memory of 2636	4992	f4b8018e0f34f3c285ed662d5ed20510N.exe	87
PID 4992 wrote to memory of 2636	4992	f4b8018e0f34f3c285ed662d5ed20510N.exe	87
PID 2636 wrote to memory of 3432	2636	winver.exe	55
PID 2636 wrote to memory of 2668	2636	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2668

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3432
- C:\Users\Admin\AppData\Local\Temp\f4b8018e0f34f3c285ed662d5ed20510N.exe
  "C:\Users\Admin\AppData\Local\Temp\f4b8018e0f34f3c285ed662d5ed20510N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4992
- - 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:2636
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 352
      4⤵
      Program crash
      PID:2976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2636 -ip 2636
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/2636-5-0x00000000774B2000-0x00000000774B3000-memory.dmp

Download

memory/2636-14-0x0000000001120000-0x0000000001126000-memory.dmp

Download

memory/2636-10-0x0000000001120000-0x0000000001126000-memory.dmp

Download

memory/2636-7-0x00007FFC28250000-0x00007FFC28445000-memory.dmp

Download

memory/2668-12-0x0000000000A70000-0x0000000000A76000-memory.dmp

Download

memory/3432-2-0x0000000000420000-0x0000000000426000-memory.dmp

Download

memory/3432-6-0x00007FFC282ED000-0x00007FFC282EE000-memory.dmp

Download

memory/3432-3-0x0000000000420000-0x0000000000426000-memory.dmp

Download

memory/3432-13-0x00007FFC28480000-0x00007FFC28481000-memory.dmp

Download

memory/4992-4-0x0000000002380000-0x0000000002D80000-memory.dmp

Download

memory/4992-8-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/4992-0-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/4992-1-0x00000000005B0000-0x00000000005B1000-memory.dmp

Download