tinba | bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dca

Analysis

max time kernel
115s
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
07-12-2024 08:23

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General

Target

bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe
Size

45KB
MD5

bafe0a937462b91e56052638abbb2bd0
SHA1

f2d6a7fcb769da69aeda1ecafc2714bda307bb3a
SHA256

bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dca
SHA512

2656fc5bf5c638145d6d4790f0f7f6da908c6d1e1b409d57013ad0e21fdb8fe2934dd519df837e07f1bf45a37a08405cab8d3ece6bb89f71ca0616f9ffb63a98
SSDEEP

768:QhP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2P:ssWE9N5dFu53dsniQaB/xZ14n7zIF+q7

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\4A74AF76 = "C:\\Users\\Admin\\AppData\\Roaming\\4A74AF76\\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/4308-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4864	4904	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	bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4904	winver.exe
4904	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3440	Explorer.EXE
Token: SeCreatePagefilePrivilege	3440	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4904	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 4904	4308	bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe	84
PID 4308 wrote to memory of 4904	4308	bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe	84
PID 4308 wrote to memory of 4904	4308	bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe	84
PID 4308 wrote to memory of 4904	4308	bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe	84
PID 4904 wrote to memory of 3440	4904	winver.exe	56
PID 4904 wrote to memory of 2628	4904	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2628

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3440
- C:\Users\Admin\AppData\Local\Temp\bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe
  "C:\Users\Admin\AppData\Local\Temp\bf03aec25fdb6514a337b5d88dfc4efb2f27266d60d868eb0f325574ec135dcaN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4308
- - 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:4904
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4904 -s 352
      4⤵
      Program crash
      PID:4864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4904 -ip 4904
1⤵
PID:3936

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/2628-14-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/3440-7-0x00007FFA2E90D000-0x00007FFA2E90E000-memory.dmp

Filesize
4KB

Download
memory/3440-2-0x00000000011B0000-0x00000000011B6000-memory.dmp

Filesize
24KB

Download
memory/3440-3-0x00000000011B0000-0x00000000011B6000-memory.dmp

Filesize
24KB

Download
memory/4308-9-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4308-4-0x0000000002230000-0x0000000002C30000-memory.dmp

Filesize
10.0MB

Download
memory/4308-0-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/4308-10-0x0000000002230000-0x0000000002C30000-memory.dmp

Filesize
10.0MB

Download
memory/4308-1-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/4904-8-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4904-6-0x00000000779F2000-0x00000000779F3000-memory.dmp

Filesize
4KB

Download
memory/4904-5-0x0000000001050000-0x0000000001056000-memory.dmp

Filesize
24KB

Download
memory/4904-15-0x0000000001050000-0x0000000001056000-memory.dmp

Filesize
24KB

Download