tinba | 223e1b9dc9fe3985056d360ea50dce0686d7ce53af6477ef978daa1af707d829

Analysis

max time kernel
118s
max time network
97s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/08/2024, 02:45

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General

Target
3b9d5932d93588b653a16744abc2db90N.exe
Size 45KB
Sample240805-c8s66avclq
SHA256 223e1b9dc9fe3985056d360ea50dce0686d7ce53af6477ef978daa1af707d829
MD5 3b9d5932d93588b653a16744abc2db90
SHA1 575a027a960a68dd47fe17affaf105a4f030ccaa
SHA512 72f2a54aba69ba87c7b2529b3bc330584e8063b0dd3c4aa2449c3ddbfe39a417e54d7cbe70e5bcfe3b730139c8ba5aaf1b6e199c019bf7fce874449857214b3e
SSDEEP 768:ghP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:csWE9N5dFu53dsniQaB/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/4784-0-0x0000000000400000-0x000000000041D000-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-1-5-21-4182098368-2521458979-3782681353-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BEB7F309 = "C:\\Users\\Admin\\AppData\\Roaming\\BEB7F309\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2956	4428	WerFault.exe	86

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	3b9d5932d93588b653a16744abc2db90N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4428	winver.exe
4428	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3512	Explorer.EXE
Token: SeCreatePagefilePrivilege	3512	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4428	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3512	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 4428	4784	3b9d5932d93588b653a16744abc2db90N.exe	86
PID 4784 wrote to memory of 4428	4784	3b9d5932d93588b653a16744abc2db90N.exe	86
PID 4784 wrote to memory of 4428	4784	3b9d5932d93588b653a16744abc2db90N.exe	86
PID 4784 wrote to memory of 4428	4784	3b9d5932d93588b653a16744abc2db90N.exe	86
PID 4428 wrote to memory of 3512	4428	winver.exe	56
PID 4428 wrote to memory of 2668	4428	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:3512
- C:\Users\Admin\AppData\Local\Temp\3b9d5932d93588b653a16744abc2db90N.exe
  "C:\Users\Admin\AppData\Local\Temp\3b9d5932d93588b653a16744abc2db90N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4784
- - 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:4428
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4428 -s 352
      4⤵
      Program crash
      PID:2956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4428 -ip 4428
1⤵
PID:5032

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/2668-13-0x00000000006B0000-0x00000000006B6000-memory.dmp

Download

memory/3512-6-0x00007FFAC206D000-0x00007FFAC206E000-memory.dmp

Download

memory/3512-16-0x00007FFAC2200000-0x00007FFAC2201000-memory.dmp

Download

memory/3512-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Download

memory/3512-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Download

memory/4428-5-0x0000000077C52000-0x0000000077C53000-memory.dmp

Download

memory/4428-7-0x00007FFAC1FD0000-0x00007FFAC21C5000-memory.dmp

Download

memory/4428-11-0x0000000000AF0000-0x0000000000AF6000-memory.dmp

Download

memory/4428-14-0x0000000000AF0000-0x0000000000AF6000-memory.dmp

Download

memory/4784-0-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/4784-8-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/4784-9-0x0000000002390000-0x0000000002D90000-memory.dmp

Download

memory/4784-4-0x0000000002390000-0x0000000002D90000-memory.dmp

Download

memory/4784-1-0x00000000006C0000-0x00000000006C1000-memory.dmp

Download