tinba | b8fc55e5a5df539b19ebc778c55d2a16cc4115d7da7b8f0c0ff985aca64d902b

Analysis

max time kernel
142s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 01:05

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General

Target
ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe
Size 52KB
Sample240831-bfkhwawgmb
SHA256 ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d
MD5 5677387e86650ea25137cb5bce341349
SHA1 bf3e5583fb2b052a3ca9d9fd53e75c6bab6942d2
SHA512 d0e079e0eef54a32a408e47131633f3b82a3d119fe261c71749f38b1f39188e3d0965da37caa5e9850a0791a8bafdefed566a2c3cbd17c26eeb8f92cdbd9de86
SSDEEP 768:yCCCFlkbwAYbFshpyiB9L9Mx2BWseUCHGAwk5R9J:6bw/6plBTFBYNNR9J
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-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\D220EBA6 = "C:\\Users\\Admin\\AppData\\Roaming\\D220EBA6\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4832	1976	WerFault.exe	85

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	ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1976	winver.exe
1976	winver.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE
Token: SeShutdownPrivilege	3420	Explorer.EXE
Token: SeCreatePagefilePrivilege	3420	Explorer.EXE

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
1976	winver.exe
3420	Explorer.EXE
3420	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3420	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4520 wrote to memory of 1976	4520	ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe	85
PID 4520 wrote to memory of 1976	4520	ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe	85
PID 4520 wrote to memory of 1976	4520	ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe	85
PID 4520 wrote to memory of 1976	4520	ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe	85
PID 1976 wrote to memory of 3420	1976	winver.exe	54
PID 1976 wrote to memory of 2244	1976	winver.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2244

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of UnmapMainImage
PID:3420
- C:\Users\Admin\AppData\Local\Temp\ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe
  "C:\Users\Admin\AppData\Local\Temp\ee5c2e89a5f9513f960c2253cd2fd2ce6a4f8c4db55d5daf0d0e5cc93b3b020d.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4520
- - 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:1976
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1976 -s 352
      4⤵
      Program crash
      PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1976 -ip 1976
1⤵
PID:3500

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/1976-6-0x00007FFAC5870000-0x00007FFAC5A65000-memory.dmp

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memory/1976-15-0x0000000001EC0000-0x0000000001EC6000-memory.dmp

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memory/1976-4-0x0000000077D32000-0x0000000077D33000-memory.dmp

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memory/1976-12-0x0000000001EC0000-0x0000000001EC6000-memory.dmp

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memory/2244-17-0x00007FFAC5A90000-0x00007FFAC5A91000-memory.dmp

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memory/2244-14-0x00000000008C0000-0x00000000008C6000-memory.dmp

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memory/3420-5-0x00007FFAC590D000-0x00007FFAC590E000-memory.dmp

Download

memory/3420-7-0x00007FFAC5AA0000-0x00007FFAC5AA1000-memory.dmp

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memory/3420-10-0x00007FFAC5A80000-0x00007FFAC5A81000-memory.dmp

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memory/3420-1-0x0000000000E00000-0x0000000000E06000-memory.dmp

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memory/3420-2-0x0000000000E00000-0x0000000000E06000-memory.dmp

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memory/4520-8-0x0000000000400000-0x0000000000411000-memory.dmp

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memory/4520-9-0x00000000021E0000-0x0000000002BE0000-memory.dmp

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memory/4520-3-0x00000000021E0000-0x0000000002BE0000-memory.dmp

Download

memory/4520-0-0x0000000002160000-0x0000000002161000-memory.dmp

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