tinba | fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c

Analysis

max time kernel
146s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 23:49

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General

Target

fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe
Size

34KB
MD5

79d41b47da6cbda5ec5fb3fbcff42e2a
SHA1

67aa429ecd9d299112293f531c308a1da07fd2d4
SHA256

fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c
SHA512

3ed8f4d91a3fecc67e5eb7c032e14cdc2c34227b38af8df82c324051251264ff6c7cbf9a2f22166fd1e5cad89411e5487847ebaae204879fa085bc379cfe559a
SSDEEP

768:sp22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9JW:spYoX58z1uirL98xMWnT0OQ9JW

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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2A7F3C3E = "C:\\Users\\Admin\\AppData\\Roaming\\2A7F3C3E\\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/2940-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1440	1360	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	fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1360	winver.exe
1360	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3472	Explorer.EXE
Token: SeCreatePagefilePrivilege	3472	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1360	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2940 wrote to memory of 1360	2940	fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe	84
PID 2940 wrote to memory of 1360	2940	fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe	84
PID 2940 wrote to memory of 1360	2940	fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe	84
PID 2940 wrote to memory of 1360	2940	fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe	84
PID 1360 wrote to memory of 3472	1360	winver.exe	56
PID 1360 wrote to memory of 3048	1360	winver.exe	51

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:3048

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3472
- C:\Users\Admin\AppData\Local\Temp\fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe
  "C:\Users\Admin\AppData\Local\Temp\fbc21f70db540968b3e594051688e4cdc7b68d88dfb8433955f2288fd02efc8c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2940
- - 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:1360
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 352
      4⤵
      Program crash
      PID:1440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1360 -ip 1360
1⤵
PID:2252

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/1360-5-0x0000000076FE2000-0x0000000076FE3000-memory.dmp

Filesize
4KB

Download
memory/1360-15-0x0000000000AF0000-0x0000000000AF6000-memory.dmp

Filesize
24KB

Download
memory/1360-12-0x0000000000AF0000-0x0000000000AF6000-memory.dmp

Filesize
24KB

Download
memory/1360-7-0x00007FF8F9E90000-0x00007FF8FA085000-memory.dmp

Filesize
2.0MB

Download
memory/2940-10-0x0000000002360000-0x0000000002D60000-memory.dmp

Filesize
10.0MB

Download
memory/2940-4-0x0000000002360000-0x0000000002D60000-memory.dmp

Filesize
10.0MB

Download
memory/2940-9-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2940-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2940-1-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/3048-14-0x0000000000970000-0x0000000000976000-memory.dmp

Filesize
24KB

Download
memory/3472-6-0x00007FF8F9F2D000-0x00007FF8F9F2E000-memory.dmp

Filesize
4KB

Download
memory/3472-2-0x0000000000E80000-0x0000000000E86000-memory.dmp

Filesize
24KB

Download
memory/3472-3-0x0000000000E80000-0x0000000000E86000-memory.dmp

Filesize
24KB

Download