Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    13-10-2024 05:33

General

  • Target

    7ea98bd7f6a69b385310f5eaa86b6828.exe

  • Size

    238KB

  • MD5

    7ea98bd7f6a69b385310f5eaa86b6828

  • SHA1

    ab3ee16a99f901336fa6221f4fdc84e562154841

  • SHA256

    930b96bbec596e80fd6b6e4a37c34000113e1affb5f1aadbce2049f5800a6fce

  • SHA512

    25f618ee87b577eec384fd49c40fe00dfa4caaf50b36227431ba838dd461024256a578857026d0942db495a6894b51a55d84190cbe78ab55f46c3c6471a0eb09

  • SSDEEP

    3072:vRSPDpmSd0310NWYOTLGp+6vDYCm0aW9s/aL/MOvobE80Ogdh1ei4T6Ql:vyDpmSK3104/LS+alDz/MRP0Vdh1tQ

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

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
  • Drops file in System32 directory 2 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.

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe
    "C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iqdeylma\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2236
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wujrkavr.exe" C:\Windows\SysWOW64\iqdeylma\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2168
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create iqdeylma binPath= "C:\Windows\SysWOW64\iqdeylma\wujrkavr.exe /d\"C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1080
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description iqdeylma "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2340
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start iqdeylma
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2768
    • 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:2780
  • C:\Windows\SysWOW64\iqdeylma\wujrkavr.exe
    C:\Windows\SysWOW64\iqdeylma\wujrkavr.exe /d"C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Windows security bypass
      • Sets service image path in registry
      • Deletes itself
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:2740

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    14.3MB

    MD5

    449bce365d83c68aaba808e3db38fd8c

    SHA1

    eb05e339e87265245d549eaff16b7557a5bbdc28

    SHA256

    cb2b7077802df03672d003a2eaef967a1338dd4effef25adfe3cede6c5995b14

    SHA512

    5dbe98f0284c0cfaf7720829f15c1f77f6d60dd14e9e8d420ad8502510cb9d264372c0b028be2f11a69f9bfd80f29e80399b3d7bcfb81e52fb56de60e5d99507

  • memory/2740-54-0x0000000005560000-0x000000000596B000-memory.dmp

    Filesize

    4.0MB

  • memory/2740-31-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-30-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-46-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2740-32-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-47-0x00000000001B0000-0x00000000001B5000-memory.dmp

    Filesize

    20KB

  • memory/2740-35-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2740-20-0x0000000001820000-0x0000000001A2F000-memory.dmp

    Filesize

    2.1MB

  • memory/2740-27-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-24-0x0000000000150000-0x0000000000156000-memory.dmp

    Filesize

    24KB

  • memory/2740-23-0x0000000001820000-0x0000000001A2F000-memory.dmp

    Filesize

    2.1MB

  • memory/2740-34-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-33-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-36-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-37-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-43-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-50-0x00000000001B0000-0x00000000001B5000-memory.dmp

    Filesize

    20KB

  • memory/2740-55-0x00000000001E0000-0x00000000001E7000-memory.dmp

    Filesize

    28KB

  • memory/2740-51-0x0000000005560000-0x000000000596B000-memory.dmp

    Filesize

    4.0MB

  • memory/2740-44-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-45-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-38-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-42-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-41-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-40-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2740-39-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2860-12-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/2960-1-0x0000000000600000-0x0000000000700000-memory.dmp

    Filesize

    1024KB

  • memory/2960-4-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2960-15-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2960-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2960-14-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/2960-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB