Analysis

  • max time kernel
    141s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-10-2024 05:30

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.

  • 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.

  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe
    "C:\Users\Admin\AppData\Local\Temp\7ea98bd7f6a69b385310f5eaa86b6828.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1288
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jgwvizhc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2908
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ragrpew.exe" C:\Windows\SysWOW64\jgwvizhc\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5032
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create jgwvizhc binPath= "C:\Windows\SysWOW64\jgwvizhc\ragrpew.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:1884
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description jgwvizhc "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2996
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start jgwvizhc
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1424
    • 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:2956
  • C:\Windows\SysWOW64\jgwvizhc\ragrpew.exe
    C:\Windows\SysWOW64\jgwvizhc\ragrpew.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:1604
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:3544

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    10.3MB

    MD5

    491e03099055090a2bcf55796b5d0830

    SHA1

    296c19b55b83b7406c31715177974d7e59312808

    SHA256

    c4d820b04db007d9e2a56c83fda9c8174fca33c3c4844f6aa04e7210db2b911a

    SHA512

    964916b69c34a75c542000c19d822b6ef0f00ab358ce5082c5a88786a123e100ef2a80f7240a9c63286d99a0ef2aaa3123d807a75e2ae36efd74075180aa20fa

  • memory/1288-2-0x0000000000610000-0x0000000000623000-memory.dmp

    Filesize

    76KB

  • memory/1288-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1288-7-0x0000000000510000-0x0000000000610000-memory.dmp

    Filesize

    1024KB

  • memory/1288-10-0x0000000000610000-0x0000000000623000-memory.dmp

    Filesize

    76KB

  • memory/1288-1-0x0000000000510000-0x0000000000610000-memory.dmp

    Filesize

    1024KB

  • memory/1288-11-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/1288-15-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/1604-16-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/1604-12-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/1604-9-0x0000000000400000-0x0000000000443000-memory.dmp

    Filesize

    268KB

  • memory/3544-25-0x0000000000DF0000-0x0000000000DF6000-memory.dmp

    Filesize

    24KB

  • memory/3544-51-0x0000000001FD0000-0x0000000001FD5000-memory.dmp

    Filesize

    20KB

  • memory/3544-18-0x00000000009D0000-0x00000000009E5000-memory.dmp

    Filesize

    84KB

  • memory/3544-24-0x0000000002800000-0x0000000002A0F000-memory.dmp

    Filesize

    2.1MB

  • memory/3544-34-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-33-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-32-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-31-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-28-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-13-0x00000000009D0000-0x00000000009E5000-memory.dmp

    Filesize

    84KB

  • memory/3544-21-0x0000000002800000-0x0000000002A0F000-memory.dmp

    Filesize

    2.1MB

  • memory/3544-55-0x0000000007800000-0x0000000007C0B000-memory.dmp

    Filesize

    4.0MB

  • memory/3544-37-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-56-0x0000000001FE0000-0x0000000001FE7000-memory.dmp

    Filesize

    28KB

  • memory/3544-52-0x0000000007800000-0x0000000007C0B000-memory.dmp

    Filesize

    4.0MB

  • memory/3544-17-0x00000000009D0000-0x00000000009E5000-memory.dmp

    Filesize

    84KB

  • memory/3544-48-0x0000000001FD0000-0x0000000001FD5000-memory.dmp

    Filesize

    20KB

  • memory/3544-47-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-46-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-45-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-44-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-43-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-42-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-41-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-40-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-39-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-38-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-36-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB

  • memory/3544-35-0x0000000001F80000-0x0000000001F90000-memory.dmp

    Filesize

    64KB