Analysis

  • max time kernel
    147s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-08-2024 15:01

General

  • Target

    9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009.exe

  • Size

    14.2MB

  • MD5

    80886a1c834f57b2fb57d166d1b31430

  • SHA1

    fe991ee5b5ee0678b4be9bfbbe6bded33041dd2b

  • SHA256

    9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009

  • SHA512

    4e74a405389201795953be1a2dd8ce399891060da079bd52d23eb7c1340b12b9c49385c4ee0866090558a41548f9383060d4891ef1b8a9b90a98e9e0e8b783dc

  • SSDEEP

    6144:OM0Em6Qk5N3Sccccccccccccccccccccccccccccccccccccccccccccccccccc3:IEma

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.

  • Creates new service(s) 2 TTPs
  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009.exe
    "C:\Users\Admin\AppData\Local\Temp\9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4588
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eadtdto\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1300
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\onzvakuh.exe" C:\Windows\SysWOW64\eadtdto\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3476
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create eadtdto binPath= "C:\Windows\SysWOW64\eadtdto\onzvakuh.exe /d\"C:\Users\Admin\AppData\Local\Temp\9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4412
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description eadtdto "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1064
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start eadtdto
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:400
    • 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:4460
  • C:\Windows\SysWOW64\eadtdto\onzvakuh.exe
    C:\Windows\SysWOW64\eadtdto\onzvakuh.exe /d"C:\Users\Admin\AppData\Local\Temp\9a6b44b5b8536a0cc1a4f7f996ca0ccf0524c591b382a0c1e6be630d172ad009.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:376

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.2MB

    MD5

    d1f2660c617b872f3d480a51c7953b15

    SHA1

    d90241b9c28b16cd33173b007a8a0639e4f1d10d

    SHA256

    5c29e816dfd3658463472ee4b25879018f36a275d55d16fd755ba5a9c5895c15

    SHA512

    8d9a135db48bace1905065074c4e33967400e4e88a20297902c3481ce2702284d6ffb9911e30584e5096eb6cef358660b711d6ecf5303d40723fbc6102c3ea87

  • memory/376-8-0x0000000000460000-0x0000000000475000-memory.dmp

    Filesize

    84KB

  • memory/376-11-0x0000000000460000-0x0000000000475000-memory.dmp

    Filesize

    84KB

  • memory/376-14-0x0000000000460000-0x0000000000475000-memory.dmp

    Filesize

    84KB

  • memory/376-15-0x0000000000460000-0x0000000000475000-memory.dmp

    Filesize

    84KB

  • memory/376-16-0x0000000000460000-0x0000000000475000-memory.dmp

    Filesize

    84KB

  • memory/536-6-0x0000000000570000-0x0000000000571000-memory.dmp

    Filesize

    4KB

  • memory/536-12-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/4588-0-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB

  • memory/4588-2-0x00000000004B0000-0x00000000004B1000-memory.dmp

    Filesize

    4KB

  • memory/4588-1-0x00000000004A0000-0x00000000004A1000-memory.dmp

    Filesize

    4KB

  • memory/4588-13-0x0000000000400000-0x000000000041F000-memory.dmp

    Filesize

    124KB