Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    01-09-2024 03:44

General

  • Target

    3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe

  • Size

    10.5MB

  • MD5

    026f086162e7d6d864ca4dc744149bc0

  • SHA1

    cc81af6e0d8bd8c89126f509ccb5714cce8a3ef0

  • SHA256

    3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460

  • SHA512

    ff7ba4526233eb5a7e6dfa4673bfe0dc9b354a9960c23822267cab62c1571139e93c3919d8bf38bd1afd58b147ea15a2fdc1ad6b92f2e0fd2e65b14847cdebf4

  • SSDEEP

    49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • 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\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe
    "C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2536
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qvikofof\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2124
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\plaafmsj.exe" C:\Windows\SysWOW64\qvikofof\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1924
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qvikofof binPath= "C:\Windows\SysWOW64\qvikofof\plaafmsj.exe /d\"C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2692
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qvikofof "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3032
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qvikofof
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2820
    • 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:2912
  • C:\Windows\SysWOW64\qvikofof\plaafmsj.exe
    C:\Windows\SysWOW64\qvikofof\plaafmsj.exe /d"C:\Users\Admin\AppData\Local\Temp\3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2832
    • 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:2636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.2MB

    MD5

    2080523d3b6e0d66812e74e446c523c3

    SHA1

    4ac55cd6c02faa2bcbe29b13b0f4e483036bff51

    SHA256

    39eea0234198bc567e36f23b23e44fccd55fe35142585243bcfc7ed753ca8974

    SHA512

    3ca1c859d3fdd2773f31c66ad761fe19dd5d825698e8f8d58b1af7bbc3d0762a5753a13ad3a96480056e7eac2ad1f332e966571285fefdab062095928626951d

  • memory/2536-9-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2536-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2536-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2536-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2536-10-0x0000000000870000-0x0000000000970000-memory.dmp

    Filesize

    1024KB

  • memory/2536-1-0x0000000000870000-0x0000000000970000-memory.dmp

    Filesize

    1024KB

  • memory/2536-8-0x0000000000400000-0x0000000000785000-memory.dmp

    Filesize

    3.5MB

  • memory/2636-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2636-15-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2636-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2636-12-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2636-19-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2832-16-0x0000000000400000-0x0000000000785000-memory.dmp

    Filesize

    3.5MB