Analysis

  • max time kernel
    146s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    07-01-2025 03:32

General

  • Target

    JaffaCakes118_4b02b5efc37cca1c519ee86f00a210f7.exe

  • Size

    13.0MB

  • MD5

    4b02b5efc37cca1c519ee86f00a210f7

  • SHA1

    c15d7ee674c4373e5e8c517e581e5102c6cd4416

  • SHA256

    ebe61355e05f3920d077495ca302afbabcbbad760c13f14d3b3d1e8c8dedfaae

  • SHA512

    a219b35b48bc6bf452471d2b265eb59ad6b40f79dd7a265be8c1c99ea145dcc108aff2ec4908e586acb00473ea113cc8ce001ae3beac5e3db015b9f214bf1daa

  • SSDEEP

    6144:fKP2GmiErAKEjgoUYRxiPnkIW2p6/hR6bPz/9hniF:OdEkf5UmiE2pagL9hi

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
  • Windows security bypass 2 TTPs 1 IoCs
  • Creates new service(s) 2 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).

  • 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.

  • 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 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4b02b5efc37cca1c519ee86f00a210f7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4b02b5efc37cca1c519ee86f00a210f7.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ikwylpeb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2000
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\krusttjx.exe" C:\Windows\SysWOW64\ikwylpeb\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2428
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create ikwylpeb binPath= "C:\Windows\SysWOW64\ikwylpeb\krusttjx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4b02b5efc37cca1c519ee86f00a210f7.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2212
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description ikwylpeb "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2900
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start ikwylpeb
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2404
    • 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:2780
  • C:\Windows\SysWOW64\ikwylpeb\krusttjx.exe
    C:\Windows\SysWOW64\ikwylpeb\krusttjx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4b02b5efc37cca1c519ee86f00a210f7.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2504
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2736

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    14.1MB

    MD5

    0ed0f4089f35d3ba7903b1cf5a092197

    SHA1

    a07b8394dd9fac15f24cf4e43bdff5d3f85e99d2

    SHA256

    e3ae1b66eb4912d52fea32b1fab8dba7b606c79e70a200bd0a2da4a59e1467de

    SHA512

    1f7d9fd7c1667e93ca255d9f35a257d8a32948effbbfa931e0fd2d49d3e8c92b08ff6d1cd9027a2187e3450db5c48ed29d0abc3b6158b346d76f76f01c2c3723

  • memory/2016-8-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2016-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2016-1-0x0000000000610000-0x0000000000710000-memory.dmp

    Filesize

    1024KB

  • memory/2016-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2016-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2016-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2504-15-0x0000000000400000-0x000000000044E000-memory.dmp

    Filesize

    312KB

  • memory/2736-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2736-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2736-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2736-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2736-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB