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Analysis

  • max time kernel
    144s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/11/2023, 19:00

General

  • Target

    ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe

  • Size

    13.2MB

  • MD5

    3328e6fe99f8cfe5b8acbaab0cb50fd0

  • SHA1

    fcd53cf0cf6b7dc3fb623908525082500cdddc17

  • SHA256

    ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e

  • SHA512

    2cb03e94d20b5a3d0c6c81d51ec8b00988b65b2c372b21ae561ab0df3331e2bbc9973bece7c527aad4b61c08b1f33b0954e0cce92fd9bbff74c6c98f574d15c6

  • SSDEEP

    3072:38NYa2qJjULtTNupQyEC6pxhhfm5OcVi:3sRItTNKr2f45

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe
    "C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4424
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jinhyifx\
      2⤵
        PID:2024
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kiplktri.exe" C:\Windows\SysWOW64\jinhyifx\
        2⤵
          PID:3144
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jinhyifx binPath= "C:\Windows\SysWOW64\jinhyifx\kiplktri.exe /d\"C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1748
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description jinhyifx "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1764
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start jinhyifx
          2⤵
          • Launches sc.exe
          PID:1324
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:5032
      • C:\Windows\SysWOW64\jinhyifx\kiplktri.exe
        C:\Windows\SysWOW64\jinhyifx\kiplktri.exe /d"C:\Users\Admin\AppData\Local\Temp\ae103e5b5c8ef0a895facd30ab6658ca00abff8604f751cc1429dd0ee3c19a9e.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3384
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:1340

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\kiplktri.exe

        Filesize

        12.9MB

        MD5

        aece90724fab86c45b92621dce54418b

        SHA1

        74b5a86f0456bd2f5e3776ef574e7853d1d2d89e

        SHA256

        bedd4e11ed01636520db6d524ce574ca5ce38763b90c14220543b61198c73194

        SHA512

        9e69b96eda1c151c075255133a70a04f37e112b06d8e172caf5fba56617a14f14e0bfbfa98d287de8af46594416d000e74e45926c67a549f6aec17deb4913c2d

      • C:\Windows\SysWOW64\jinhyifx\kiplktri.exe

        Filesize

        12.9MB

        MD5

        aece90724fab86c45b92621dce54418b

        SHA1

        74b5a86f0456bd2f5e3776ef574e7853d1d2d89e

        SHA256

        bedd4e11ed01636520db6d524ce574ca5ce38763b90c14220543b61198c73194

        SHA512

        9e69b96eda1c151c075255133a70a04f37e112b06d8e172caf5fba56617a14f14e0bfbfa98d287de8af46594416d000e74e45926c67a549f6aec17deb4913c2d

      • memory/1340-9-0x0000000001200000-0x0000000001215000-memory.dmp

        Filesize

        84KB

      • memory/1340-14-0x0000000001200000-0x0000000001215000-memory.dmp

        Filesize

        84KB

      • memory/1340-15-0x0000000001200000-0x0000000001215000-memory.dmp

        Filesize

        84KB

      • memory/1340-16-0x0000000001200000-0x0000000001215000-memory.dmp

        Filesize

        84KB

      • memory/3384-12-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/3384-7-0x0000000000690000-0x0000000000691000-memory.dmp

        Filesize

        4KB

      • memory/4424-1-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB

      • memory/4424-0-0x00000000009D0000-0x00000000009D1000-memory.dmp

        Filesize

        4KB

      • memory/4424-2-0x00000000009E0000-0x00000000009E1000-memory.dmp

        Filesize

        4KB

      • memory/4424-6-0x0000000000400000-0x0000000000421000-memory.dmp

        Filesize

        132KB