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Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/12/2024, 20:04

General

  • Target

    JaffaCakes118_aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b.exe

  • Size

    340KB

  • MD5

    4fc5de69bdd1bbb7df7d71f154fce436

  • SHA1

    893d9b742a2291bf75808035751b34bbc435fe7c

  • SHA256

    aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b

  • SHA512

    976ec301d00d28a47634ef7b1c133fb287dd1f27d575b5f60eee84cb66273cb60177f454ea7c00d64092f13abe21b2fbee9861ce01e2553bbd36ce58ee086b5c

  • SSDEEP

    6144:MS2WA8SG69ck1We5RgrvQl2MWA+3LzKeiT:MS2WARGWL1B5RgrvQl2v/KhT

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

  • Tofsee

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

  • Tofsee family
  • 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\JaffaCakes118_aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tbhipsqp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1480
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zfadmvvq.exe" C:\Windows\SysWOW64\tbhipsqp\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2604
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create tbhipsqp binPath= "C:\Windows\SysWOW64\tbhipsqp\zfadmvvq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5056
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description tbhipsqp "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4564
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start tbhipsqp
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1476
    • 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:4280
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 636 -s 1048
      2⤵
      • Program crash
      PID:4852
  • C:\Windows\SysWOW64\tbhipsqp\zfadmvvq.exe
    C:\Windows\SysWOW64\tbhipsqp\zfadmvvq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_aa595fa7f60b53a2a70057948eb964a75860cda95e8d1f7132fc08acf80ae25b.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2812
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4572 -s 512
      2⤵
      • Program crash
      PID:1732
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 636 -ip 636
    1⤵
      PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4572 -ip 4572
      1⤵
        PID:2620

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        12.3MB

        MD5

        e5d18d939daba6b38ce76ee5ca860bf9

        SHA1

        cf779b1e268b974d8490f7011d5c73bc91d5357e

        SHA256

        a8b8a618ff01a3b99fd37316b19d3dbb0ac006935fa6c49c63e18faa3943f57d

        SHA512

        ca31b1f6134df35553f502c6738f259f165b3092e3fb7977014cc64ab40527ae19a560bd9fa3178ed6347d46eec4488f077cebd3e0da1efa2d2d12c8c7b2dac6

      • memory/636-1-0x0000000000B00000-0x0000000000C00000-memory.dmp

        Filesize

        1024KB

      • memory/636-2-0x0000000000AA0000-0x0000000000AB3000-memory.dmp

        Filesize

        76KB

      • memory/636-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/636-9-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/636-8-0x0000000000AA0000-0x0000000000AB3000-memory.dmp

        Filesize

        76KB

      • memory/636-7-0x0000000000400000-0x00000000008F9000-memory.dmp

        Filesize

        5.0MB

      • memory/2812-11-0x0000000000AF0000-0x0000000000B05000-memory.dmp

        Filesize

        84KB

      • memory/2812-13-0x0000000000AF0000-0x0000000000B05000-memory.dmp

        Filesize

        84KB

      • memory/2812-14-0x0000000000AF0000-0x0000000000B05000-memory.dmp

        Filesize

        84KB

      • memory/4572-15-0x0000000000400000-0x00000000008F9000-memory.dmp

        Filesize

        5.0MB