Analysis

  • max time kernel
    145s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25-12-2024 13:45

General

  • Target

    JaffaCakes118_a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a.exe

  • Size

    236KB

  • MD5

    7679009858a84abb6a9ec42accbf6733

  • SHA1

    48b898b42380444677620354c9a1fa26de3d22e5

  • SHA256

    a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a

  • SHA512

    80f9aee782c84f7242b2e5eac8d24d7274b2b29ad80a56f9bfee6017cd2ecf88de23625cfd0037bc27507e9a0c43884c29c8471b4c10f9d7e0d525ed7aaacdc6

  • SSDEEP

    6144:coD6bWHeHdjZXhTjBlL02Xu9zxK4HZmkMkmKZWzg:c6L+9jFhr02Xuxk0ZUKo

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_a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qgoyvfd\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2780
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tayjojxl.exe" C:\Windows\SysWOW64\qgoyvfd\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2964
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qgoyvfd binPath= "C:\Windows\SysWOW64\qgoyvfd\tayjojxl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2112
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qgoyvfd "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2620
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qgoyvfd
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2196
    • 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:2588
  • C:\Windows\SysWOW64\qgoyvfd\tayjojxl.exe
    C:\Windows\SysWOW64\qgoyvfd\tayjojxl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d8d5274a90022480fa0b8f55b2e072eddd6287a2f12d77b0555062d33c970a.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2632
    • 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:3052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.7MB

    MD5

    df02c28acdf8331f0d7c1ed04eed9e13

    SHA1

    19d791fc66220e97e164160f5ca0914a0a145bcf

    SHA256

    7893b188f7a4924657c2bd46f61035e0b0947086603fb8f5795f942b4353eeb4

    SHA512

    1c6cf7081fcf3e7cff0cdc48a407772739624dcc8dcccb3eeb4a4bfa19fbb63c4a44c28826150664d413d335592dc023fd57fd3f09e6f102a71b451eb35c48af

  • memory/2220-9-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2220-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2220-2-0x0000000000020000-0x0000000000033000-memory.dmp

    Filesize

    76KB

  • memory/2220-8-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB

  • memory/2220-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2220-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

    Filesize

    1024KB

  • memory/2632-15-0x0000000000400000-0x000000000086B000-memory.dmp

    Filesize

    4.4MB

  • memory/3052-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3052-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3052-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3052-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3052-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB