Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-05-2024 12:28

General

  • Target

    dfa8d594788b84c5fab3e2161b4fb320_NeikiAnalytics.exe

  • Size

    231KB

  • MD5

    dfa8d594788b84c5fab3e2161b4fb320

  • SHA1

    3f6a2f39ae93e5bf4f0677e68d429edfc7889cfe

  • SHA256

    90aacf0dcedad342aaf6a68caa80e8a0d64d44612405207e1ca11795236e09d0

  • SHA512

    c38249eee1ffd1c1b526446f91d632a6e290de819ccd1b6ece429219ab88da94da50d6bcc394e3df17d19cd90643a9c7175f25674b60d7394cb3b6eb5d0fc753

  • SSDEEP

    3072:J+NMi6c8OZi6+bdUtueSK4S+8Ek/rkrVV+TwS31rhduafc+ofzjXvn4ndT9y+Y:tc1JkdmhT11krVV+TZ3jlc+o7jX6dT

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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
  • Drops file in System32 directory 2 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).

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dfa8d594788b84c5fab3e2161b4fb320_NeikiAnalytics.exe
    "C:\Users\Admin\AppData\Local\Temp\dfa8d594788b84c5fab3e2161b4fb320_NeikiAnalytics.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2096
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mxnhqrob\
      2⤵
        PID:4156
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kwebhuay.exe" C:\Windows\SysWOW64\mxnhqrob\
        2⤵
          PID:3268
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create mxnhqrob binPath= "C:\Windows\SysWOW64\mxnhqrob\kwebhuay.exe /d\"C:\Users\Admin\AppData\Local\Temp\dfa8d594788b84c5fab3e2161b4fb320_NeikiAnalytics.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:4796
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description mxnhqrob "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4220
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start mxnhqrob
          2⤵
          • Launches sc.exe
          PID:4948
        • 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:2176
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2096 -s 896
          2⤵
          • Program crash
          PID:452
      • C:\Windows\SysWOW64\mxnhqrob\kwebhuay.exe
        C:\Windows\SysWOW64\mxnhqrob\kwebhuay.exe /d"C:\Users\Admin\AppData\Local\Temp\dfa8d594788b84c5fab3e2161b4fb320_NeikiAnalytics.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:4608
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4392 -s 520
          2⤵
          • Program crash
          PID:3196
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2096 -ip 2096
        1⤵
          PID:224
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4392 -ip 4392
          1⤵
            PID:2884

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            14.6MB

            MD5

            a4a950572c1a1e733fb942ef850b08a0

            SHA1

            6da861113e4e37f5d7263840f29c3515a6de74cf

            SHA256

            3b2dad33f2964707ade8b3cbd2fc93178d46b536e5b505b4e09655a3ff0b5c9c

            SHA512

            c40d3e26aaaa0ed113926335cd42a4f21b26bb0617b3ad9205dea8b7e2b05495b1a6624c2edd332f47000b1d90c273754c1d7be7a1bcb17b3473fbebf470d56c

          • memory/2096-2-0x0000000002F00000-0x0000000002F13000-memory.dmp

            Filesize

            76KB

          • memory/2096-4-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/2096-1-0x0000000002FC0000-0x00000000030C0000-memory.dmp

            Filesize

            1024KB

          • memory/2096-12-0x0000000000400000-0x0000000000415000-memory.dmp

            Filesize

            84KB

          • memory/2096-11-0x0000000002F00000-0x0000000002F13000-memory.dmp

            Filesize

            76KB

          • memory/2096-10-0x0000000000400000-0x0000000002C99000-memory.dmp

            Filesize

            40.6MB

          • memory/4392-13-0x0000000000400000-0x0000000002C99000-memory.dmp

            Filesize

            40.6MB

          • memory/4608-41-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-35-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-15-0x0000000000D90000-0x0000000000DA5000-memory.dmp

            Filesize

            84KB

          • memory/4608-48-0x0000000007B80000-0x0000000007F8B000-memory.dmp

            Filesize

            4.0MB

          • memory/4608-52-0x00000000023F0000-0x00000000023F7000-memory.dmp

            Filesize

            28KB

          • memory/4608-51-0x0000000007B80000-0x0000000007F8B000-memory.dmp

            Filesize

            4.0MB

          • memory/4608-47-0x00000000023E0000-0x00000000023E5000-memory.dmp

            Filesize

            20KB

          • memory/4608-44-0x00000000023E0000-0x00000000023E5000-memory.dmp

            Filesize

            20KB

          • memory/4608-43-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-42-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-8-0x0000000000D90000-0x0000000000DA5000-memory.dmp

            Filesize

            84KB

          • memory/4608-40-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-39-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-38-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-36-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-14-0x0000000000D90000-0x0000000000DA5000-memory.dmp

            Filesize

            84KB

          • memory/4608-34-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-33-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-32-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-31-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-30-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-29-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-28-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-27-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-24-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-21-0x0000000002340000-0x0000000002346000-memory.dmp

            Filesize

            24KB

          • memory/4608-37-0x0000000002350000-0x0000000002360000-memory.dmp

            Filesize

            64KB

          • memory/4608-20-0x0000000002C00000-0x0000000002E0F000-memory.dmp

            Filesize

            2.1MB

          • memory/4608-17-0x0000000002C00000-0x0000000002E0F000-memory.dmp

            Filesize

            2.1MB