Analysis

  • max time kernel
    146s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29-12-2024 04:55

General

  • Target

    JaffaCakes118_44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9.exe

  • Size

    237KB

  • MD5

    d3a038ef3f856723ca4e86d1e80610c4

  • SHA1

    aecf8b2eddcef044984ebaa14370e00dddc841bf

  • SHA256

    44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9

  • SHA512

    535bf635e885ee06080b9e7b298a390562f4e66a04ddaa9f65773ebc236787f9692993afd9ae12ed5ca0279831efeb56bc9fc1c74ae14b6bbf3516a2b1200fbe

  • SSDEEP

    6144:8onO1WHesBjBiTjBRqZA6YWEZN7ERGc0J7YPFHFb6c:8m5+mjBi2ZA6YW01ERGc09Ybm

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_44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2380
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dhmktvpu\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlxffqfn.exe" C:\Windows\SysWOW64\dhmktvpu\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2360
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create dhmktvpu binPath= "C:\Windows\SysWOW64\dhmktvpu\zlxffqfn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2968
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description dhmktvpu "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2436
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start dhmktvpu
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2836
    • 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:2976
  • C:\Windows\SysWOW64\dhmktvpu\zlxffqfn.exe
    C:\Windows\SysWOW64\dhmktvpu\zlxffqfn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_44d2bb1b945b6ae43a4bea7eb6d06bed6b9008438170e3298eb034b49a9169a9.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2820
    • 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:2752

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    10.5MB

    MD5

    14ceeddbb4e74922373576b497534955

    SHA1

    4d3be4b81c343c7aec92965e7a19ff27714a9f2d

    SHA256

    cd298c8c77e2e70dbbf2a3f5c2f7e84033cf05d7950c18db56cbf53f0ed4422b

    SHA512

    d60d55c5ebf59a89fa38204faa011eea3a39a81d0de7a84273a338e78f24bf2d16c5bf24210734aca78c517f4db7bd6b4c2e00631cabdb0b7c9c99fda450b541

  • memory/2380-8-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB

  • memory/2380-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2380-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2380-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2380-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2380-1-0x00000000008F0000-0x00000000009F0000-memory.dmp

    Filesize

    1024KB

  • memory/2752-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2752-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2752-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2752-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2752-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2820-17-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB