Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/03/2024, 17:06

General

  • Target

    de8324c81f580d5f1f3f313224f9cee2.exe

  • Size

    11.4MB

  • MD5

    de8324c81f580d5f1f3f313224f9cee2

  • SHA1

    e0eeaa9e3000f88f3c37c15949bc90cd45a80fab

  • SHA256

    ee9b872015d916a29d3cb56629f02477d60ad22e62013ded3914fd72ea97f966

  • SHA512

    d5ebd3502d271830240fceac7aacf5b2235383584c86917f825191cc351c81b4517df589d98bcc066cbeb8ecdc2108bf57974d0324f107d04e0e19493de1523c

  • SSDEEP

    24576:Wm1111111111111111111111111111111111111111111111111111111111111V:

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) 1 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).

  • Program crash 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe
    "C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jipiujwz\
      2⤵
        PID:2064
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wwpcolkm.exe" C:\Windows\SysWOW64\jipiujwz\
        2⤵
          PID:4476
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create jipiujwz binPath= "C:\Windows\SysWOW64\jipiujwz\wwpcolkm.exe /d\"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2124
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description jipiujwz "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1520
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start jipiujwz
          2⤵
          • Launches sc.exe
          PID:1664
        • 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:1156
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1036
          2⤵
          • Program crash
          PID:64
      • C:\Windows\SysWOW64\jipiujwz\wwpcolkm.exe
        C:\Windows\SysWOW64\jipiujwz\wwpcolkm.exe /d"C:\Users\Admin\AppData\Local\Temp\de8324c81f580d5f1f3f313224f9cee2.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1516
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:796
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1516 -s 520
          2⤵
          • Program crash
          PID:2888
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4968 -ip 4968
        1⤵
          PID:4132
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 1516 -ip 1516
          1⤵
            PID:4896

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            2.6MB

            MD5

            3e6edafd689bee933af82111d2136fc1

            SHA1

            378dbcdcf9b5c84204d6777c51344b86b3514bb9

            SHA256

            724e17e98ee73346c2fbb70d4c7757036f5d62a6a9355dda6b9940afb501f3e8

            SHA512

            214f97b81625e4d4b8c1381a2d7b424bfd26d09b6a8dfec893facf4edf9d8e063b5601a15648c07322fffefcfec3072c4ac9d258bf0cea5457f1a4c35efc170a

          • C:\Windows\SysWOW64\jipiujwz\wwpcolkm.exe

            Filesize

            14.3MB

            MD5

            9120cba4bee0547cf74ca130452af1a6

            SHA1

            35545928284e78502dc2a41f6691223c2b27d25e

            SHA256

            68bd29510e1eb6e0f31623787a195c2080b037722909634515f9c702bf91b804

            SHA512

            fa0c972688aafc588a828abe2521f2b7c1e5df4ab14517a7bb0c11084db3e9e5b1e2e917123d13c81c5aaa0a56068eda0c34d57e7d2bb6f61abf3e2339383de4

          • memory/796-12-0x0000000000440000-0x0000000000455000-memory.dmp

            Filesize

            84KB

          • memory/796-21-0x0000000000440000-0x0000000000455000-memory.dmp

            Filesize

            84KB

          • memory/796-20-0x0000000000440000-0x0000000000455000-memory.dmp

            Filesize

            84KB

          • memory/796-18-0x0000000000440000-0x0000000000455000-memory.dmp

            Filesize

            84KB

          • memory/796-16-0x0000000000440000-0x0000000000455000-memory.dmp

            Filesize

            84KB

          • memory/1516-14-0x0000000002CD0000-0x0000000002DD0000-memory.dmp

            Filesize

            1024KB

          • memory/1516-11-0x0000000000400000-0x0000000002C6D000-memory.dmp

            Filesize

            40.4MB

          • memory/1516-19-0x0000000000400000-0x0000000002C6D000-memory.dmp

            Filesize

            40.4MB

          • memory/4968-1-0x0000000002E00000-0x0000000002F00000-memory.dmp

            Filesize

            1024KB

          • memory/4968-10-0x0000000002DD0000-0x0000000002DE3000-memory.dmp

            Filesize

            76KB

          • memory/4968-8-0x0000000000400000-0x0000000002C6D000-memory.dmp

            Filesize

            40.4MB

          • memory/4968-4-0x0000000000400000-0x0000000002C6D000-memory.dmp

            Filesize

            40.4MB

          • memory/4968-2-0x0000000002DD0000-0x0000000002DE3000-memory.dmp

            Filesize

            76KB