Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 20:02

General

  • Target

    JaffaCakes118_67f1dd72e4ab8cd18349384a17dc0d90.exe

  • Size

    14.5MB

  • MD5

    67f1dd72e4ab8cd18349384a17dc0d90

  • SHA1

    d5e214f0fb5474a7dd085e6af38ae50f08bbd954

  • SHA256

    034c3cec7c957bc0389b3c8626da669cfa25635957f6acf9cb1c3eec2cfe8643

  • SHA512

    2c1066b4e29e49d1010c2e58750aca502926552d43ec32bb9b838af62f88b29205d16b8f4d3f9521c88f2c65c00afa512fab8f99a5206c042cdb8b2f87dc048c

  • SSDEEP

    196608:/tPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP3:/

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.

  • 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_67f1dd72e4ab8cd18349384a17dc0d90.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_67f1dd72e4ab8cd18349384a17dc0d90.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uyriyblt\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3616
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\psltrtbl.exe" C:\Windows\SysWOW64\uyriyblt\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4748
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create uyriyblt binPath= "C:\Windows\SysWOW64\uyriyblt\psltrtbl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_67f1dd72e4ab8cd18349384a17dc0d90.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4492
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description uyriyblt "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3936
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start uyriyblt
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2060
    • 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:1820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2284 -s 596
      2⤵
      • Program crash
      PID:4892
  • C:\Windows\SysWOW64\uyriyblt\psltrtbl.exe
    C:\Windows\SysWOW64\uyriyblt\psltrtbl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_67f1dd72e4ab8cd18349384a17dc0d90.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:616
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 616 -s 516
      2⤵
      • Program crash
      PID:2608
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2284 -ip 2284
    1⤵
      PID:2792
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 616 -ip 616
      1⤵
        PID:3604

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        14.3MB

        MD5

        28a1547b646eef6b5adda50cca504878

        SHA1

        c8f2d0299f4f88f2ed5c4e90ca0341704b246a08

        SHA256

        8ad67c5ab9eaee3bf7b40f3d1801978f515196225526819225b571fdb440392e

        SHA512

        71934c42a02c1fb3335d2194a7c80f4139adc786f71e0dabb0dfcf765e836618455ab43c251f71be7b8f9008bb7f87ff6b5afaaec59553722811c70af03acc1f

      • memory/112-12-0x0000000000620000-0x0000000000635000-memory.dmp

        Filesize

        84KB

      • memory/112-14-0x0000000000620000-0x0000000000635000-memory.dmp

        Filesize

        84KB

      • memory/112-17-0x0000000000620000-0x0000000000635000-memory.dmp

        Filesize

        84KB

      • memory/616-11-0x0000000000400000-0x0000000000871000-memory.dmp

        Filesize

        4.4MB

      • memory/616-16-0x0000000000400000-0x0000000000871000-memory.dmp

        Filesize

        4.4MB

      • memory/616-15-0x0000000000400000-0x0000000000871000-memory.dmp

        Filesize

        4.4MB

      • memory/2284-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2284-1-0x0000000000970000-0x0000000000A70000-memory.dmp

        Filesize

        1024KB

      • memory/2284-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB

      • memory/2284-10-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2284-8-0x0000000000400000-0x0000000000871000-memory.dmp

        Filesize

        4.4MB

      • memory/2284-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

        Filesize

        76KB