tinba | 79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932

Analysis

max time kernel
118s
max time network
108s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
15/10/2024, 14:05

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General

Target
79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe
Size 98KB
Sample241015-rd2blssenr
SHA256 79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932
MD5 d4c9488e65a5e884843880fdea67a670
SHA1 104d18445eddf0b00c60bf1f4322aa27ba9cf86e
SHA512 36d6fc1397da766f031661a1812f389c0d48edd1e075aff086f40b576fd5f79908d5c490f2ef40156349a9dcf64432e74258da379dc8cfb4dd5ef5c17b98f718
SSDEEP 768:W+6p+OMlgGMCWhfDzU7f7JDgi9I57+sByZ+XsfXpwtG9ipelU9JF:W+mFM2HXKZgi9Iksu+XM57ipeq9JF
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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\619F2663 = "C:\\Users\\Admin\\AppData\\Roaming\\619F2663\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1724	1548	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	79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1548	winver.exe
1548	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3424	Explorer.EXE
Token: SeCreatePagefilePrivilege	3424	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1548	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3424	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4268 wrote to memory of 1548	4268	79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe	85
PID 4268 wrote to memory of 1548	4268	79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe	85
PID 4268 wrote to memory of 1548	4268	79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe	85
PID 4268 wrote to memory of 1548	4268	79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe	85
PID 1548 wrote to memory of 3424	1548	winver.exe	56
PID 1548 wrote to memory of 2956	1548	winver.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2956

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3424
- C:\Users\Admin\AppData\Local\Temp\79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe
  "C:\Users\Admin\AppData\Local\Temp\79b3cf5944f4d0ebdf37e7f79a82cc07a9b1d80eaf50fda71a3adec0f3de6932N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4268
- - 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:1548
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1548 -s 352
      4⤵
      Program crash
      PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1548 -ip 1548
1⤵
PID:3904

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/1548-10-0x00000000005F0000-0x00000000005F6000-memory.dmp

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memory/1548-4-0x0000000077CD2000-0x0000000077CD3000-memory.dmp

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memory/1548-13-0x00000000005F0000-0x00000000005F6000-memory.dmp

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memory/1548-6-0x00007FF9AA950000-0x00007FF9AAB45000-memory.dmp

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memory/2956-12-0x0000000000490000-0x0000000000496000-memory.dmp

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memory/2956-14-0x0000000000490000-0x0000000000496000-memory.dmp

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memory/2956-16-0x00007FF9AAB70000-0x00007FF9AAB71000-memory.dmp

Download

memory/3424-5-0x00007FF9AA9ED000-0x00007FF9AA9EE000-memory.dmp

Download

memory/3424-1-0x0000000000550000-0x0000000000556000-memory.dmp

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memory/3424-2-0x0000000000550000-0x0000000000556000-memory.dmp

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memory/3424-15-0x00007FF9AAB80000-0x00007FF9AAB81000-memory.dmp

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memory/4268-8-0x00000000021A0000-0x0000000002BA0000-memory.dmp

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memory/4268-3-0x00000000021A0000-0x0000000002BA0000-memory.dmp

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memory/4268-0-0x00000000004A0000-0x00000000004A1000-memory.dmp

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memory/4268-7-0x0000000000400000-0x000000000041A000-memory.dmp

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