tinba | cd6b77fb20354a499791cf9e0422fc01127a7041812600b3adce4796a9f9ed56

Analysis

max time kernel
144s
max time network
131s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
31/08/2024, 08:14

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General

Target
ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe
Size 34KB
Sample240831-j5chkatfrl
SHA256 ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c
MD5 9c4ba08904f202f6f2f1da55c246ff62
SHA1 b32dfa4669d3dc0ad901b0bf54b5b642d7fd6e3d
SHA512 6e869ff275585c8ef04cd7492a00ae113af6c826439d1fc5aa5a4e728c53eb065c54b4a45d46c1bdb4910cd21c4c7446a43c71257954cba1a3f8aa416bbc3b21
SSDEEP 768:dp22qWFcy5XQ7lO41uirwA98p3MpkNBxd0cJWV6dy/x9J2:dpYoX58z1uirL98xMWnT0OQ9J2
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/3488-0-0x0000000000400000-0x0000000000417000-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\E4934220 = "C:\\Users\\Admin\\AppData\\Roaming\\E4934220\\bin.exe"	winver.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
456	3452	WerFault.exe	92

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	ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winver.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3452	winver.exe
3452	winver.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3492	Explorer.EXE
Token: SeCreatePagefilePrivilege	3492	Explorer.EXE
Token: SeShutdownPrivilege	3492	Explorer.EXE
Token: SeCreatePagefilePrivilege	3492	Explorer.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3452	winver.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3492	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3488 wrote to memory of 3452	3488	ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe	92
PID 3488 wrote to memory of 3452	3488	ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe	92
PID 3488 wrote to memory of 3452	3488	ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe	92
PID 3488 wrote to memory of 3452	3488	ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe	92
PID 3452 wrote to memory of 3492	3452	winver.exe	56
PID 3452 wrote to memory of 2616	3452	winver.exe	44

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2616

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
PID:3492
- C:\Users\Admin\AppData\Local\Temp\ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe
  "C:\Users\Admin\AppData\Local\Temp\ba3e0514b68ab3b610e59ca03f51545014a63ebbcee25f36af3468e6a565254c.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3488
- - 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:3452
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3452 -s 352
      4⤵
      Program crash
      PID:456

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=4060,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4156 /prefetch:8
1⤵
PID:1364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3452 -ip 3452
1⤵
PID:1068

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/2616-17-0x00007FFEBED30000-0x00007FFEBED31000-memory.dmp

Download

memory/2616-14-0x0000000000550000-0x0000000000556000-memory.dmp

Download

memory/3452-5-0x0000000077502000-0x0000000077503000-memory.dmp

Download

memory/3452-15-0x0000000002530000-0x0000000002536000-memory.dmp

Download

memory/3452-12-0x0000000002530000-0x0000000002536000-memory.dmp

Download

memory/3452-7-0x00007FFEBEB10000-0x00007FFEBED05000-memory.dmp

Download

memory/3488-9-0x0000000002270000-0x0000000002C70000-memory.dmp

Download

memory/3488-8-0x0000000000400000-0x0000000000417000-memory.dmp

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memory/3488-0-0x0000000000400000-0x0000000000417000-memory.dmp

Download

memory/3488-4-0x0000000002270000-0x0000000002C70000-memory.dmp

Download

memory/3488-1-0x00000000006C0000-0x00000000006C1000-memory.dmp

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memory/3492-6-0x00007FFEBEBAD000-0x00007FFEBEBAE000-memory.dmp

Download

memory/3492-10-0x00007FFEBED40000-0x00007FFEBED41000-memory.dmp

Download

memory/3492-2-0x0000000000FC0000-0x0000000000FC6000-memory.dmp

Download

memory/3492-3-0x0000000000FC0000-0x0000000000FC6000-memory.dmp

Download