Analysis

  • max time kernel
    148s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-12-2024 17:43

General

  • Target

    2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe

  • Size

    14.1MB

  • MD5

    23e9979fbb7f84f4b5d0607fc2d2f028

  • SHA1

    79efaf5f89312c8fdd793ec0635c765da9f4fec6

  • SHA256

    b292c25b82bf85d7627703ab0abfb2ca2a101bb947c05971e000f8b4b08ee919

  • SHA512

    beee800d545f040159da76fbcc61837b4f0be48d7aba9559a268e0a6ec2854ca516b679efccb2d5fc12e8b0fec86d19730cf5cb8d7a8026d7e1895dc1d561450

  • SSDEEP

    6144:lyXxZTquqxpXAdbbiFyKq3nUOcWfMMMMMMMbt:lyXzN8pXAdbbyyZtZfMMMMMMMb

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2068
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sexeafxk\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gacztpze.exe" C:\Windows\SysWOW64\sexeafxk\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2508
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create sexeafxk binPath= "C:\Windows\SysWOW64\sexeafxk\gacztpze.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1392
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description sexeafxk "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2780
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start sexeafxk
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2884
    • 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:2720
  • C:\Windows\SysWOW64\sexeafxk\gacztpze.exe
    C:\Windows\SysWOW64\sexeafxk\gacztpze.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-01_23e9979fbb7f84f4b5d0607fc2d2f028_karagany_mafia.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2736
    • 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

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Downloads

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

    Filesize

    12.2MB

    MD5

    9f600b553e610cdc4affaedf401656ce

    SHA1

    217d15189ae7b7ffe8dd37338dea51f972fe068f

    SHA256

    050f6e60cee47745884c38125dc891cfa0f2729cec52d88b54166cf9678ac891

    SHA512

    ba536dc95d81a2f2611da10aa0aa51548befff0f7271654aa902b8a98ad3e7ff1f4c0223ff243a89a082a4f63199c8924d4b2604a54bcce7149462d566387410

  • memory/2068-8-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2068-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2068-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2068-10-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2068-9-0x0000000000620000-0x0000000000720000-memory.dmp

    Filesize

    1024KB

  • memory/2068-1-0x0000000000620000-0x0000000000720000-memory.dmp

    Filesize

    1024KB

  • memory/2068-7-0x0000000000400000-0x0000000000481000-memory.dmp

    Filesize

    516KB

  • memory/2736-16-0x0000000000400000-0x0000000000481000-memory.dmp

    Filesize

    516KB

  • memory/2752-15-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2752-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2752-12-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

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

    Filesize

    84KB

  • memory/2752-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB