tinba | 31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246c

Analysis

max time kernel
146s
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
10/10/2024, 22:23

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General

Target
31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe
Size 59KB
Sample241010-2a2hbavflk
SHA256 31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246c
MD5 24ea132499227e2461db26f2908ffbd0
SHA1 7c9d7981367077727e5105335c08b4135d395120
SHA512 2c6394ec997c3bb79275bd53e290abb9d5a9778c2b2effc7f00145861df44d8886a7e645af5a0107b9799743001d8f42bab2691562883f7a887dc90f4db4383a
SSDEEP 768:l+6p+OMlgGMCWhfDzU7f7JDgiFP7xI57+sByZ+XsfXpwtGc9J1:l+mFM2HXKZgiFP7xIksu+XM5O9J1
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tinba banker discovery persistence trojan

Malware Config

Signatures

Tinba / TinyBanker
Banking trojan which uses packet sniffing to steal data.
trojan banker 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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\9E4BAB90 = "C:\\Users\\Admin\\AppData\\Roaming\\9E4BAB90\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2036	1152	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	winver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1152	winver.exe
1152	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1152	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3520	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4012 wrote to memory of 1152	4012	31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe	86
PID 4012 wrote to memory of 1152	4012	31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe	86
PID 4012 wrote to memory of 1152	4012	31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe	86
PID 4012 wrote to memory of 1152	4012	31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe	86
PID 1152 wrote to memory of 3520	1152	winver.exe	56
PID 1152 wrote to memory of 2448	1152	winver.exe	42

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2448

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3520
- C:\Users\Admin\AppData\Local\Temp\31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe
  "C:\Users\Admin\AppData\Local\Temp\31b83fadd9548878c3ef617dae4fd7727d0da9d84a37418a60d201b90070246cN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4012
- - 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:1152
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1152 -s 352
      4⤵
      Program crash
      PID:2036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1152 -ip 1152
1⤵
PID:4960

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/1152-10-0x00000000006A0000-0x00000000006A6000-memory.dmp

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memory/1152-4-0x00000000776F2000-0x00000000776F3000-memory.dmp

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memory/1152-6-0x00007FF9BE610000-0x00007FF9BE805000-memory.dmp

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memory/1152-13-0x00000000006A0000-0x00000000006A6000-memory.dmp

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memory/2448-12-0x00000000007A0000-0x00000000007A6000-memory.dmp

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memory/3520-2-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

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memory/3520-1-0x0000000001EE0000-0x0000000001EE6000-memory.dmp

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memory/3520-5-0x00007FF9BE6AD000-0x00007FF9BE6AE000-memory.dmp

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memory/3520-15-0x00007FF9BE840000-0x00007FF9BE841000-memory.dmp

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memory/4012-3-0x00000000021E0000-0x0000000002BE0000-memory.dmp

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memory/4012-7-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/4012-8-0x00000000021E0000-0x0000000002BE0000-memory.dmp

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memory/4012-0-0x0000000002160000-0x0000000002161000-memory.dmp

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