Analysis

  • max time kernel
    151s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/03/2024, 12:12

General

  • Target

    df22722085baaf84cd07e5d92b7ac69a.exe

  • Size

    10.5MB

  • MD5

    df22722085baaf84cd07e5d92b7ac69a

  • SHA1

    9be3215a254149267f6477c8e3e64d18aef0e38d

  • SHA256

    e801ec0c491f33580b9474ab6e202b18f6952d48b69019a9c4ed48c279c5cf33

  • SHA512

    c804dcc3643d69d1a4c330eafddd39e043584220d907d42e7dfeb353f5bc67e0fc0d1614e4e769b1d25b627cbe413369bb13e81243b3d25add5b8ad371589531

  • SSDEEP

    49152:Z88888888888888888888888888888888888888888888888888888888888888f:

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\df22722085baaf84cd07e5d92b7ac69a.exe
    "C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4064
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hgpeothd\
      2⤵
        PID:2092
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fjmiudaw.exe" C:\Windows\SysWOW64\hgpeothd\
        2⤵
          PID:2244
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create hgpeothd binPath= "C:\Windows\SysWOW64\hgpeothd\fjmiudaw.exe /d\"C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3536
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description hgpeothd "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:4436
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start hgpeothd
          2⤵
          • Launches sc.exe
          PID:4136
        • 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:3304
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 1304
          2⤵
          • Program crash
          PID:1436
      • C:\Windows\SysWOW64\hgpeothd\fjmiudaw.exe
        C:\Windows\SysWOW64\hgpeothd\fjmiudaw.exe /d"C:\Users\Admin\AppData\Local\Temp\df22722085baaf84cd07e5d92b7ac69a.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3740
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Deletes itself
          PID:4520
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3740 -s 524
          2⤵
          • Program crash
          PID:3792
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4064 -ip 4064
        1⤵
          PID:1020
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3740 -ip 3740
          1⤵
            PID:4996

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            5.6MB

            MD5

            4b2cdf265bdc4663c7d8d5fce329af3a

            SHA1

            ddf85d2d30c6dd4bd7c7f74a7a1d3180bfe3a8d2

            SHA256

            ce45efa4712146b5d6b14c4e9b800711d1ed33cdc97661763294d50e6fd95217

            SHA512

            d076a1dfc932e43dd055126259de55c7e9dccd3f6ecef16ca427e230f18074ced8c52cf869d59dcbde61cc2f22bfe521c09d563600e87112c9a5b413094c1200

          • C:\Windows\SysWOW64\hgpeothd\fjmiudaw.exe

            Filesize

            13.3MB

            MD5

            95de3d2d8e0b2f36d46e9df8224207eb

            SHA1

            dc69d77831d53ec917654cc3a3a8dba797f94ce5

            SHA256

            27dd0b8dd92e40b9c717f890bbdc2c772954e290ec9c02513fdafb980acdbe7a

            SHA512

            7dc449bd4d4fb358f241f8fa2619ebc970808128aaacd5aea32bf4c5fd87135a531a00f7154cbefeabb79dd1839ebe9515f9d22792be87f1e4e49a0dbb049c72

          • memory/3740-18-0x0000000000400000-0x0000000002C68000-memory.dmp

            Filesize

            40.4MB

          • memory/3740-12-0x0000000000400000-0x0000000002C68000-memory.dmp

            Filesize

            40.4MB

          • memory/3740-11-0x0000000002EA0000-0x0000000002FA0000-memory.dmp

            Filesize

            1024KB

          • memory/4064-5-0x0000000000400000-0x0000000002C68000-memory.dmp

            Filesize

            40.4MB

          • memory/4064-9-0x0000000000400000-0x0000000002C68000-memory.dmp

            Filesize

            40.4MB

          • memory/4064-10-0x00000000049B0000-0x00000000049C3000-memory.dmp

            Filesize

            76KB

          • memory/4064-1-0x0000000002D40000-0x0000000002E40000-memory.dmp

            Filesize

            1024KB

          • memory/4064-3-0x0000000000400000-0x0000000002C68000-memory.dmp

            Filesize

            40.4MB

          • memory/4064-2-0x00000000049B0000-0x00000000049C3000-memory.dmp

            Filesize

            76KB

          • memory/4520-13-0x0000000000410000-0x0000000000425000-memory.dmp

            Filesize

            84KB

          • memory/4520-17-0x0000000000410000-0x0000000000425000-memory.dmp

            Filesize

            84KB

          • memory/4520-19-0x0000000000410000-0x0000000000425000-memory.dmp

            Filesize

            84KB

          • memory/4520-20-0x0000000000410000-0x0000000000425000-memory.dmp

            Filesize

            84KB