tinba | b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bd

Analysis

max time kernel
146s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02-10-2024 14:29

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General

Target

b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe
Size

34KB
MD5

5796498ff0aa1c72bba24ab99ac2e2e0
SHA1

ec998b97bab9259f2fe9ca7aae9210f4f4ac3fcb
SHA256

b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bd
SHA512

7af38229c487c6bfb3452bb3d04152909a51a4fc6e75443dc42d7b9cfa31e8ace24f5b9b843cda3151e27ecead1c5f80f24f2d3db9fe71b49f8c6cdcbef4f9bf
SSDEEP

768:Up22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:UpYoX58z1uirL98xMWnT0OQ9J2

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

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-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\61C8B6C9 = "C:\\Users\\Admin\\AppData\\Roaming\\61C8B6C9\\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/2592-0-0x0000000000400000-0x0000000000417000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
516	4528	WerFault.exe	83

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	b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4528	winver.exe
4528	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4528	winver.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2592 wrote to memory of 4528	2592	b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe	83
PID 2592 wrote to memory of 4528	2592	b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe	83
PID 2592 wrote to memory of 4528	2592	b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe	83
PID 2592 wrote to memory of 4528	2592	b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe	83
PID 4528 wrote to memory of 3504	4528	winver.exe	56
PID 4528 wrote to memory of 2808	4528	winver.exe	49

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2808

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3504
- C:\Users\Admin\AppData\Local\Temp\b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe
  "C:\Users\Admin\AppData\Local\Temp\b77cbd6722c0606122c6982840cf581d2927fc1154e8c6db9cd3d4320c5c15bdN.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2592
- - 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:4528
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 352
      4⤵
      Program crash
      PID:516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 208 -p 4528 -ip 4528
1⤵
PID:396

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/2592-9-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2592-1-0x00000000006C0000-0x00000000006C1000-memory.dmp

Filesize
4KB

Download
memory/2592-0-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2592-4-0x0000000002370000-0x0000000002D70000-memory.dmp

Filesize
10.0MB

Download
memory/2592-10-0x0000000002370000-0x0000000002D70000-memory.dmp

Filesize
10.0MB

Download
memory/2808-14-0x0000000000F70000-0x0000000000F76000-memory.dmp

Filesize
24KB

Download
memory/3504-2-0x00000000010D0000-0x00000000010D6000-memory.dmp

Filesize
24KB

Download
memory/3504-7-0x00007FF9A188D000-0x00007FF9A188E000-memory.dmp

Filesize
4KB

Download
memory/3504-3-0x00000000010D0000-0x00000000010D6000-memory.dmp

Filesize
24KB

Download
memory/4528-5-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/4528-8-0x00007FF9A17F0000-0x00007FF9A19E5000-memory.dmp

Filesize
2.0MB

Download
memory/4528-6-0x00000000773F2000-0x00000000773F3000-memory.dmp

Filesize
4KB

Download
memory/4528-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download