tinba | 91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2025 04:17

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General

Target

91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe
Size

110KB
MD5

6345f60f4f16e4deb5b6a1af71e03ee5
SHA1

b2110606a8271537595ecb9468155c01a8e458bc
SHA256

91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2
SHA512

22735e1ae884ca0591aab71c81da34986e35cf05a586101c01c9d01c6b31a32a0d1fbe4e05c1cc44731ec68668b9417166e9b93a392da08fbc10bbb72a8f3fcd
SSDEEP

1536:biLOvRmmQegJfBbmAQ256/ZrwWnwqjhurmKFcxL8JQ2r0Eg:biyvRmDLs/ZrwWJjAqGcRJ2hg

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
Tinba family
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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\599FDA35 = "C:\\Users\\Admin\\AppData\\Roaming\\599FDA35\\bin.exe"	winver.exe

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4924-0-0x0000000000400000-0x000000000041E000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2764	4836	WerFault.exe	84

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	91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4836	winver.exe
4836	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

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

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4836	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4924 wrote to memory of 4836	4924	91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe	84
PID 4924 wrote to memory of 4836	4924	91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe	84
PID 4924 wrote to memory of 4836	4924	91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe	84
PID 4924 wrote to memory of 4836	4924	91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe	84
PID 4836 wrote to memory of 3528	4836	winver.exe	56
PID 4836 wrote to memory of 2820	4836	winver.exe	50

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2820

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3528
- C:\Users\Admin\AppData\Local\Temp\91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe
  "C:\Users\Admin\AppData\Local\Temp\91c58f503bcc3a1e2babbc5a71f02138c3bd723d25c1ede5e68409fc65a976c2.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4924
- - 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:4836
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 356
      4⤵
      Program crash
      PID:2764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4836 -ip 4836
1⤵
PID:2804

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/2820-14-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/3528-6-0x00007FFDBBBED000-0x00007FFDBBBEE000-memory.dmp

Filesize
4KB

Download
memory/3528-3-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3528-2-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4836-5-0x0000000077BA2000-0x0000000077BA3000-memory.dmp

Filesize
4KB

Download
memory/4836-7-0x00007FFDBBB50000-0x00007FFDBBD45000-memory.dmp

Filesize
2.0MB

Download
memory/4836-12-0x0000000001410000-0x0000000001416000-memory.dmp

Filesize
24KB

Download
memory/4836-15-0x0000000001410000-0x0000000001416000-memory.dmp

Filesize
24KB

Download
memory/4924-4-0x0000000002350000-0x0000000002D50000-memory.dmp

Filesize
10.0MB

Download
memory/4924-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4924-9-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4924-10-0x0000000002350000-0x0000000002D50000-memory.dmp

Filesize
10.0MB

Download
memory/4924-1-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download