Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 18:41

General

  • Target

    deb0c884cd5bdf35238e063bc643c2e5.exe

  • Size

    11.7MB

  • MD5

    deb0c884cd5bdf35238e063bc643c2e5

  • SHA1

    79a9bb56636321130ad4a6e031026521a645e195

  • SHA256

    69124d1b3d101c9199c4d39f766ac185a8a0bd2f191b1295fb2d5780a3b0f38b

  • SHA512

    730ac2567491cb39d321a34cabb93db0cabb9bf1f55563facd4092375d3f95fe823540301ec95ba7f6c07cae355fb6062cf8567863b0b28cbfe7af0c510e530b

  • SSDEEP

    49152:m88888888888888888888888888888888888888888888888888888888888888f:

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.

  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\deb0c884cd5bdf35238e063bc643c2e5.exe
    "C:\Users\Admin\AppData\Local\Temp\deb0c884cd5bdf35238e063bc643c2e5.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2360
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\myvqpluh\
      2⤵
        PID:2984
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cgnrtwmy.exe" C:\Windows\SysWOW64\myvqpluh\
        2⤵
          PID:3000
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create myvqpluh binPath= "C:\Windows\SysWOW64\myvqpluh\cgnrtwmy.exe /d\"C:\Users\Admin\AppData\Local\Temp\deb0c884cd5bdf35238e063bc643c2e5.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:3048
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description myvqpluh "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2560
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start myvqpluh
          2⤵
          • Launches sc.exe
          PID:2704
        • 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:2588
      • C:\Windows\SysWOW64\myvqpluh\cgnrtwmy.exe
        C:\Windows\SysWOW64\myvqpluh\cgnrtwmy.exe /d"C:\Users\Admin\AppData\Local\Temp\deb0c884cd5bdf35238e063bc643c2e5.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2608
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          PID:1668

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        5.3MB

        MD5

        ffb26617c9b107568cd960ac9308e371

        SHA1

        da31196bf4831fd1d25d5f400ddffc19befa553e

        SHA256

        ac36ec8d597954e2d004e65c8ec59d33ddbac90bb2053cda0c718ee29f0ba1e2

        SHA512

        7bec8ed392a7eebe14ff288c93f440fc99cb800e965f929369255726e6075d93d8d045911ef0b4447e9f17e2fba02c83b3ff7d2a40cb9a1ddcf785797e7415b2

      • C:\Windows\SysWOW64\myvqpluh\cgnrtwmy.exe

        Filesize

        4.2MB

        MD5

        b0e8f710765cbaa3e033d78f50be69f3

        SHA1

        872dceab9ce447b1dc1c67b79f5c0b673cda7e61

        SHA256

        e254c831064534096434f1fac6c98ddaa5f81db5f9d67ac1b43e34472e1314f6

        SHA512

        44b4c06c8239c644751e01008864ed294c468ca7c1af884b069c1954490f50ddddd0dca7bc114999eb4c8f0ca29ecf13a143e32d5e2d5ad29e1110fa03aa08b0

      • memory/1668-10-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1668-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/1668-13-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1668-19-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1668-20-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/1668-21-0x0000000000080000-0x0000000000095000-memory.dmp

        Filesize

        84KB

      • memory/2360-4-0x00000000002A0000-0x00000000002B3000-memory.dmp

        Filesize

        76KB

      • memory/2360-3-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/2360-8-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/2360-1-0x0000000002CE0000-0x0000000002DE0000-memory.dmp

        Filesize

        1024KB

      • memory/2608-9-0x00000000002D0000-0x00000000003D0000-memory.dmp

        Filesize

        1024KB

      • memory/2608-16-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB

      • memory/2608-15-0x0000000000400000-0x0000000002C68000-memory.dmp

        Filesize

        40.4MB