tinba | 56fe8eee9a3d42416d7732222726571488b1534a2e680672c24021c552dfe9d5

Analysis

max time kernel
117s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
07/09/2024, 11:42

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General

Target
9cf24170ec7f8a6ffd19c64029ec5300N.exe
Size 45KB
Sample240907-nt5r7asgla
SHA256 56fe8eee9a3d42416d7732222726571488b1534a2e680672c24021c552dfe9d5
MD5 9cf24170ec7f8a6ffd19c64029ec5300
SHA1 3991cc5e095670961789e1db99b2d009759fec2e
SHA512 5cd1d57d9f10ec54a080b9cab996f7f64a8fa4d2ea0334f02967b01e54a1af530a7fb59741d3587be43468b092082d48a74ebfa630884a4da04d105e4266f1c9
SSDEEP 768:8hP0kDE9N5dCA8J7VHXdrIniQaBTT+QQ+r1n4K8+C9TtIuCjaqUODvJVQ2f:wsWE9N5dFu53dsniQaB/xZ14n7zIF+qr
MD5 SHA1 SHA512 SSDEEP

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

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5032-0-0x0000000000400000-0x000000000041D000-memory.dmp	upx

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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BE76730C = "C:\\Users\\Admin\\AppData\\Roaming\\BE76730C\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1100	3636	WerFault.exe	91

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	winver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9cf24170ec7f8a6ffd19c64029ec5300N.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3636	winver.exe
3636	winver.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3472	Explorer.EXE
Token: SeCreatePagefilePrivilege	3472	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3636	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3472	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 3636	5032	9cf24170ec7f8a6ffd19c64029ec5300N.exe	91
PID 5032 wrote to memory of 3636	5032	9cf24170ec7f8a6ffd19c64029ec5300N.exe	91
PID 5032 wrote to memory of 3636	5032	9cf24170ec7f8a6ffd19c64029ec5300N.exe	91
PID 5032 wrote to memory of 3636	5032	9cf24170ec7f8a6ffd19c64029ec5300N.exe	91
PID 3636 wrote to memory of 3472	3636	winver.exe	56
PID 3636 wrote to memory of 3016	3636	winver.exe	50

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:3016

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3472
- C:\Users\Admin\AppData\Local\Temp\9cf24170ec7f8a6ffd19c64029ec5300N.exe
  "C:\Users\Admin\AppData\Local\Temp\9cf24170ec7f8a6ffd19c64029ec5300N.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5032
- - 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:3636
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 352
      4⤵
      Program crash
      PID:1100

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4448,i,1330210614411927383,9239043499051775691,262144 --variations-seed-version --mojo-platform-channel-handle=4396 /prefetch:8
1⤵
PID:2844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3636 -ip 3636
1⤵
PID:4980

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/3016-14-0x0000000000F20000-0x0000000000F26000-memory.dmp

Download

memory/3472-6-0x00007FFCD92CD000-0x00007FFCD92CE000-memory.dmp

Download

memory/3472-3-0x0000000000820000-0x0000000000826000-memory.dmp

Download

memory/3472-2-0x0000000000820000-0x0000000000826000-memory.dmp

Download

memory/3472-8-0x00007FFCD9460000-0x00007FFCD9461000-memory.dmp

Download

memory/3636-5-0x0000000077702000-0x0000000077703000-memory.dmp

Download

memory/3636-7-0x00007FFCD9230000-0x00007FFCD9425000-memory.dmp

Download

memory/3636-12-0x0000000002C10000-0x0000000002C16000-memory.dmp

Download

memory/3636-15-0x0000000002C10000-0x0000000002C16000-memory.dmp

Download

memory/5032-0-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/5032-4-0x0000000002330000-0x0000000002D30000-memory.dmp

Download

memory/5032-9-0x0000000000400000-0x000000000041D000-memory.dmp

Download

memory/5032-10-0x0000000002330000-0x0000000002D30000-memory.dmp

Download

memory/5032-1-0x0000000002160000-0x0000000002161000-memory.dmp

Download