tinba | e9f85095c34b837ca2d983eb3f1f5c4179be3a0a9deeda278ab81a428fc058c6

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22/12/2023, 14:36

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General

Target
c7a9b65bcae03cc2e091ef0c5d2533b0.exe
Size 49KB
Sample231222-ryr9faeda4
SHA256 e9f85095c34b837ca2d983eb3f1f5c4179be3a0a9deeda278ab81a428fc058c6
MD5 c7a9b65bcae03cc2e091ef0c5d2533b0
SHA1 649430031ca4f314e198241f93d497160c0c8a85
SHA512 06a2e97a30a2de5e974825f326436d8f1703171a7dccece945bde645803eabad14572dcfc5ad7b767a09e0cd07181c95c7e1696c826c1b5262add654041b9b56
SSDEEP 768:1CCCFlkbwAYbFshpyiB9L9Mx2BWseUCHGAwk5R9Jw:Nbw/6plBTFBYNNR9Jw
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tinba banker 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-1-5-21-1497073144-2389943819-3385106915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B5B63A8D = "C:\\Users\\Admin\\AppData\\Roaming\\B5B63A8D\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2676	2828	WerFault.exe	89

Modifies registry class 3 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.Search_cw5n1h2txyewy\WasEverActivated = "1"	sihost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\	Explorer.EXE
Key created	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2828	winver.exe
2828	winver.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3528	Explorer.EXE
Token: SeCreatePagefilePrivilege	3528	Explorer.EXE
Token: SeShutdownPrivilege	3528	Explorer.EXE
Token: SeCreatePagefilePrivilege	3528	Explorer.EXE
Token: SeShutdownPrivilege	3528	Explorer.EXE
Token: SeCreatePagefilePrivilege	3528	Explorer.EXE
Token: SeShutdownPrivilege	3528	Explorer.EXE
Token: SeCreatePagefilePrivilege	3528	Explorer.EXE
Token: SeShutdownPrivilege	3528	Explorer.EXE
Token: SeCreatePagefilePrivilege	3528	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2828	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3528	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4836 wrote to memory of 2828	4836	c7a9b65bcae03cc2e091ef0c5d2533b0.exe	89
PID 4836 wrote to memory of 2828	4836	c7a9b65bcae03cc2e091ef0c5d2533b0.exe	89
PID 4836 wrote to memory of 2828	4836	c7a9b65bcae03cc2e091ef0c5d2533b0.exe	89
PID 4836 wrote to memory of 2828	4836	c7a9b65bcae03cc2e091ef0c5d2533b0.exe	89
PID 2828 wrote to memory of 3528	2828	winver.exe	47
PID 2828 wrote to memory of 2596	2828	winver.exe	57

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3528
- C:\Users\Admin\AppData\Local\Temp\c7a9b65bcae03cc2e091ef0c5d2533b0.exe
  "C:\Users\Admin\AppData\Local\Temp\c7a9b65bcae03cc2e091ef0c5d2533b0.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4836
- - C:\Windows\SysWOW64\winver.exe
    winver
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of WriteProcessMemory
    PID:2828
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2828 -s 352
      4⤵
      Program crash
      PID:2676

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
- Modifies registry class
PID:2596

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2828 -ip 2828
1⤵
PID:4872

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2596-12-0x0000000000EE0000-0x0000000000EE6000-memory.dmp

Download

memory/2596-15-0x00007FFD57890000-0x00007FFD57891000-memory.dmp

Download

memory/2828-4-0x00000000778C2000-0x00000000778C3000-memory.dmp

Download

memory/2828-6-0x0000000002500000-0x0000000002506000-memory.dmp

Download

memory/2828-13-0x0000000002500000-0x0000000002506000-memory.dmp

Download

memory/3528-5-0x00007FFD5770D000-0x00007FFD5770E000-memory.dmp

Download

memory/3528-3-0x0000000002A90000-0x0000000002A96000-memory.dmp

Download

memory/3528-7-0x00007FFD578A0000-0x00007FFD578A1000-memory.dmp

Download

memory/3528-1-0x0000000002A90000-0x0000000002A96000-memory.dmp

Download

memory/3528-16-0x00007FFD57880000-0x00007FFD57881000-memory.dmp

Download

memory/4836-0-0x00000000005C0000-0x00000000005C1000-memory.dmp

Download

memory/4836-8-0x0000000000400000-0x0000000000411000-memory.dmp

Download

memory/4836-2-0x00000000022F0000-0x0000000002CF0000-memory.dmp

Download