Analysis

  • max time kernel
    146s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 22:36

General

  • Target

    JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe

  • Size

    217KB

  • MD5

    edacf50354a9e6e50955d4d75dc9d3fc

  • SHA1

    e55be89d83db2c861881ea464a3bf6323b26c4f5

  • SHA256

    02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db

  • SHA512

    5cbbf27ac3faf2f065f0408abdee478433e0193872fbebcb46411b3fa8c625d84f44348e64aa1a2ceac2310dcd60941f0fad47d5d40475e2fccc6b13cfc6521b

  • SSDEEP

    3072:ShqCP0VOCAW/KEow57KVEXKS9H6U8bDCSQblkUlCyEaa:Ssb/KmXKEaU8QbfVE

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_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wffnauzo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2888
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\euuujagy.exe" C:\Windows\SysWOW64\wffnauzo\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2088
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wffnauzo binPath= "C:\Windows\SysWOW64\wffnauzo\euuujagy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2604
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wffnauzo "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 wffnauzo
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2588
    • 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:2316
  • C:\Windows\SysWOW64\wffnauzo\euuujagy.exe
    C:\Windows\SysWOW64\wffnauzo\euuujagy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2640
    • 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:1072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    11.3MB

    MD5

    43df2b810348aa24272ec4d6f466ae0d

    SHA1

    a47671a7a8c48167914c3cdc79aa3cbdbfa27e55

    SHA256

    e9d72e8cc05602a9dba292c2eb217784aefbad50039a155fdabba3ff566782cc

    SHA512

    29c891801fced31dd3ddcf993ee66bba8010f557bfa3ee0d05c1640ba414d11e27eb47944d8eb2fc7b7755b616299ab397dd339ebb9b7545d056020f7b4d2a12

  • memory/1072-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1072-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1072-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1072-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/1072-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2640-17-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/2792-1-0x00000000002D0000-0x00000000003D0000-memory.dmp

    Filesize

    1024KB

  • memory/2792-3-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB

  • memory/2792-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2792-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2792-9-0x0000000000400000-0x00000000004BD000-memory.dmp

    Filesize

    756KB