Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    25/05/2026, 22:41

General

  • Target
    tmp3o8k22ad.exe
  • Size 88KB
  • Sample260525-2mcdysbt3x
  • SHA256 b9295f41ab00fd6467658d0b7e1e4813df06bcb4d0ad66711077a6cf75c78ce0
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Tinba / TinyBanker

    Banking trojan which uses packet sniffing to steal data.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:1064
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:3208
      • C:\Users\Admin\AppData\Local\Temp\tmp3o8k22ad.exe
        "C:\Users\Admin\AppData\Local\Temp\tmp3o8k22ad.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4504
        • 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:2872
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 380
            4⤵
            • Program crash
            PID:584
    • C:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exe
      C:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exe
      1⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2208
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2872 -ip 2872
      1⤵
        PID:1304

      Network

            MITRE ATT&CK Enterprise v16

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            Downloads

            bin.exe

            • Path C:\Users\Admin\AppData\Roaming\4EB1FFBF\bin.exe
            • Size 88KB
            • SHA256 644617f25dd826b93469d0f8c6df20c8944a73c296d97d2ae31281f95308f98e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1064-28-0x0000000000950000-0x0000000000956000-memory.dmp

            memory/1872-15-0x000001D4B9480000-0x000001D4B9486000-memory.dmp

            memory/1872-25-0x00007FFB862A0000-0x00007FFB864A9000-memory.dmp

            memory/1872-19-0x00007FFB862A0000-0x00007FFB864A9000-memory.dmp

            memory/2208-21-0x00007FFB862A0000-0x00007FFB864A9000-memory.dmp

            memory/2208-22-0x00000000001C0000-0x00000000001C6000-memory.dmp

            memory/2872-4-0x0000000077AA4000-0x0000000077AA5000-memory.dmp

            memory/2872-6-0x00007FFB862A0000-0x00007FFB864A9000-memory.dmp

            memory/2872-10-0x00000000008A0000-0x00000000008A6000-memory.dmp

            memory/2872-29-0x00000000008A0000-0x00000000008A6000-memory.dmp

            memory/3208-12-0x00007FFB864B0000-0x00007FFB864B1000-memory.dmp

            memory/3208-14-0x00007FFB864C0000-0x00007FFB864C1000-memory.dmp

            memory/3208-5-0x00007FFB86343000-0x00007FFB86344000-memory.dmp

            memory/3208-1-0x0000000002DC0000-0x0000000002DC6000-memory.dmp

            memory/3208-2-0x0000000002DC0000-0x0000000002DC6000-memory.dmp

            memory/3208-11-0x0000000002D70000-0x0000000002D71000-memory.dmp

            memory/4504-7-0x0000000000400000-0x0000000000417000-memory.dmp

            memory/4504-8-0x0000000002170000-0x0000000002B70000-memory.dmp

            memory/4504-0-0x0000000002120000-0x0000000002121000-memory.dmp

            memory/4504-3-0x0000000002170000-0x0000000002B70000-memory.dmp