tinba | 4e9da3a0ad0803a3c309714a8f72329d1887bc11013a20d2cb34273714c682ca

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
27/07/2024, 04:27

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General

Target
90a05e65ead68457838673b2e05cc7d0N.exe
Size 225KB
Sample240727-e3gx2sxdpk
SHA256 4e9da3a0ad0803a3c309714a8f72329d1887bc11013a20d2cb34273714c682ca
MD5 90a05e65ead68457838673b2e05cc7d0
SHA1 0d6ddc8990260629a3d6b8e18bdb57a47d995d95
SHA512 16e8fad0c8805fa0b4efb25d96c9a44565be1508bf126b35567d371cff70c3beaec704ce9e9c6c6b73ed4d84e6ff775e4b7e3a86787893a40eed04efdfb0dd91
SSDEEP 6144:OA2P27yTAnKGw0hjFhSR/W11yAJ9v0pMtRCpYM:OATuTAnKGwUAW3ycQqgf
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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\4EC99DBF = "C:\\Users\\Admin\\AppData\\Roaming\\4EC99DBF\\bin.exe"	winver.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	90a05e65ead68457838673b2e05cc7d0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

pid	Process
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe
2600	winver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2600	winver.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2600	2280	90a05e65ead68457838673b2e05cc7d0N.exe	30
PID 2280 wrote to memory of 2600	2280	90a05e65ead68457838673b2e05cc7d0N.exe	30
PID 2280 wrote to memory of 2600	2280	90a05e65ead68457838673b2e05cc7d0N.exe	30
PID 2280 wrote to memory of 2600	2280	90a05e65ead68457838673b2e05cc7d0N.exe	30
PID 2280 wrote to memory of 2600	2280	90a05e65ead68457838673b2e05cc7d0N.exe	30
PID 2600 wrote to memory of 1232	2600	winver.exe	21
PID 2600 wrote to memory of 1116	2600	winver.exe	19
PID 2600 wrote to memory of 1176	2600	winver.exe	20
PID 2600 wrote to memory of 1232	2600	winver.exe	21
PID 2600 wrote to memory of 872	2600	winver.exe	23

C:\Windows\system32\taskhost.exe
"taskhost.exe"
1⤵
PID:1116

C:\Windows\system32\Dwm.exe
"C:\Windows\system32\Dwm.exe"
1⤵
PID:1176

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1232
- C:\Users\Admin\AppData\Local\Temp\90a05e65ead68457838673b2e05cc7d0N.exe
  "C:\Users\Admin\AppData\Local\Temp\90a05e65ead68457838673b2e05cc7d0N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2280
- - 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:2600

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:872

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 Information Discovery

T1082

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/872-26-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Download

memory/872-20-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Download

memory/1116-24-0x0000000001F10000-0x0000000001F16000-memory.dmp

Download

memory/1116-11-0x0000000001F10000-0x0000000001F16000-memory.dmp

Download

memory/1176-14-0x00000000001B0000-0x00000000001B6000-memory.dmp

Download

memory/1176-25-0x00000000001B0000-0x00000000001B6000-memory.dmp

Download

memory/1232-1-0x0000000002620000-0x0000000002626000-memory.dmp

Download

memory/1232-17-0x0000000002630000-0x0000000002636000-memory.dmp

Download

memory/1232-27-0x0000000002630000-0x0000000002636000-memory.dmp

Download

memory/1232-3-0x0000000002620000-0x0000000002626000-memory.dmp

Download

memory/1232-6-0x0000000002620000-0x0000000002626000-memory.dmp

Download

memory/2280-8-0x0000000000400000-0x000000000043C000-memory.dmp

Download

memory/2600-23-0x0000000000700000-0x0000000000706000-memory.dmp

Download

memory/2600-4-0x0000000000340000-0x0000000000346000-memory.dmp

Download

memory/2600-29-0x0000000000700000-0x0000000000706000-memory.dmp

Download