Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-08-2024 22:45

General

  • Target

    c3f26a78e7cc7d7c1f3a22cd82c9df84_JaffaCakes118.exe

  • Size

    14.1MB

  • MD5

    c3f26a78e7cc7d7c1f3a22cd82c9df84

  • SHA1

    e0613a088747351994400b54311bb1ace6036364

  • SHA256

    45d0bb36312a53205b7a0e885ca97a5115946146c6fda31fefda101b6d487f28

  • SHA512

    eab255aff18a776b56f1bb7aa53eef8a15d916eff21660b6e82ed229a34bd67e7a444c52a942af8017e7c784219e240593ce31d89d357501588d2ba6a666bb8b

  • SSDEEP

    393216:+88888888888888888888888888888888888888888888888888888888888888/:

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

  • Tofsee

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

  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 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).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c3f26a78e7cc7d7c1f3a22cd82c9df84_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\c3f26a78e7cc7d7c1f3a22cd82c9df84_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3564
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bhzlyvtp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1368
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nugtcpqk.exe" C:\Windows\SysWOW64\bhzlyvtp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1424
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create bhzlyvtp binPath= "C:\Windows\SysWOW64\bhzlyvtp\nugtcpqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\c3f26a78e7cc7d7c1f3a22cd82c9df84_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4396
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description bhzlyvtp "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3244
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start bhzlyvtp
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4012
    • 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
      • Event Triggered Execution: Netsh Helper DLL
      • System Location Discovery: System Language Discovery
      PID:4812
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3564 -s 1224
      2⤵
      • Program crash
      PID:2564
  • C:\Windows\SysWOW64\bhzlyvtp\nugtcpqk.exe
    C:\Windows\SysWOW64\bhzlyvtp\nugtcpqk.exe /d"C:\Users\Admin\AppData\Local\Temp\c3f26a78e7cc7d7c1f3a22cd82c9df84_JaffaCakes118.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4492
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:784
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 512
      2⤵
      • Program crash
      PID:2848
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3564 -ip 3564
    1⤵
      PID:1792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4492 -ip 4492
      1⤵
        PID:4032

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        10.6MB

        MD5

        da9831f17cfb56296689619905d348a8

        SHA1

        9c8cdff61a1fee8e6c8d2ce76dd951db2b06a6dd

        SHA256

        a32b4c00a33323fdc71c848f4096267d9010ba66f846e8c3f2b34c995c22992e

        SHA512

        9a11a39aa35175ad0d9fc9e47a56020775d083855977b904e0480a826120bea5e9506ffa3c115a982d03ddf5ad87a91305d0d65e320e56e717dc476a69b31174

      • memory/784-14-0x0000000000C80000-0x0000000000C95000-memory.dmp

        Filesize

        84KB

      • memory/784-17-0x0000000000C80000-0x0000000000C95000-memory.dmp

        Filesize

        84KB

      • memory/784-16-0x0000000000C80000-0x0000000000C95000-memory.dmp

        Filesize

        84KB

      • memory/3564-8-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/3564-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3564-1-0x00000000007C0000-0x00000000008C0000-memory.dmp

        Filesize

        1024KB

      • memory/3564-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/3564-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/3564-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/4492-12-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4492-11-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4492-13-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB

      • memory/4492-19-0x0000000000400000-0x0000000000455000-memory.dmp

        Filesize

        340KB