Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 15:14

General

  • Target

    79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f.exe

  • Size

    12.5MB

  • MD5

    aee483bf0ab0bbba03e7add1c7b24d70

  • SHA1

    15ef01d3f681c7ec8cfb1e55a318723f4f4406f7

  • SHA256

    79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f

  • SHA512

    4dfe9bb49aec68b29055ab74aaac4efd83e96051072aa9f15bd2a8530376ba58f1b3d7741229a5fd96f81cd92ead9481918b4fe580bcc4baae158269d985d80e

  • SSDEEP

    6144:0ngjLKfnGE+Nj43Gd/50NS0UG4th+d49EOVVVVVVVVVVVVVVVVVVVVVVVVVVVVV7:fiOE+Nj4Q50k0UGIh+dJ

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.

  • 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\79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f.exe
    "C:\Users\Admin\AppData\Local\Temp\79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2304
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qkzhimnh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2504
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wiuccnck.exe" C:\Windows\SysWOW64\qkzhimnh\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2772
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create qkzhimnh binPath= "C:\Windows\SysWOW64\qkzhimnh\wiuccnck.exe /d\"C:\Users\Admin\AppData\Local\Temp\79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2860
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description qkzhimnh "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2788
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start qkzhimnh
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2792
    • 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:832
  • C:\Windows\SysWOW64\qkzhimnh\wiuccnck.exe
    C:\Windows\SysWOW64\qkzhimnh\wiuccnck.exe /d"C:\Users\Admin\AppData\Local\Temp\79231c2cacbfc0da610bb317d280a96d0d10e63a5824d5d052e41e57fb85bd6f.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2928
    • 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:2708

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    11.0MB

    MD5

    5cef3359ea95edad08a22ce643f9253f

    SHA1

    e10d8d9ba9a94b36e8bf806c92ee853e93e182b0

    SHA256

    15018fda452ee97ba5ad015b480658bdd3ca34865dffcd44b362ddeb4cf368a0

    SHA512

    fc0279f75ce88d77562ce6a1c1283ef650f40b7a1ed17d580f65952ae1d879afb34429423098dc1e3ab488a03a6826a9c10e7687866301aff33aa2c31c700a7c

  • memory/2304-10-0x0000000001840000-0x0000000001940000-memory.dmp

    Filesize

    1024KB

  • memory/2304-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2304-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2304-9-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2304-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2304-1-0x0000000001840000-0x0000000001940000-memory.dmp

    Filesize

    1024KB

  • memory/2304-8-0x0000000000400000-0x0000000001782000-memory.dmp

    Filesize

    19.5MB

  • memory/2708-12-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2708-15-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2708-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2708-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2708-19-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2928-17-0x0000000000400000-0x0000000001782000-memory.dmp

    Filesize

    19.5MB