Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-09-2024 17:05

General

  • Target

    qkkcfptf.exe

  • Size

    11.6MB

  • MD5

    fed6d9f141d4ac6b3388a2c90722bd62

  • SHA1

    3480f699c94d4a520c8d92dfd2f6c84d5bd9668b

  • SHA256

    b84685b177c7bbd6e54c0cd81f5ac41c02e2c77a400b71a830636f93a686eaaf

  • SHA512

    f678216084e177bc51879d697f6e4201449874ed1c6f4c41fc1cb62aecf8ed5c3ab17784c1d30c481ee99c727fe0a29cd2854bdcaf554b3da425d59b5e957719

  • SSDEEP

    6144:rc6OZDisWsD0Td2HJxO+m8PuG1R4WnWjrsaz:r1OZDisvwdaxO0PuG1R4CWs

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.

  • 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 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\qkkcfptf.exe
    "C:\Users\Admin\AppData\Local\Temp\qkkcfptf.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4840
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xamqvuis\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4008
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfrwtzym.exe" C:\Windows\SysWOW64\xamqvuis\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1232
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create xamqvuis binPath= "C:\Windows\SysWOW64\xamqvuis\tfrwtzym.exe /d\"C:\Users\Admin\AppData\Local\Temp\qkkcfptf.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:4232
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description xamqvuis "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1156
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start xamqvuis
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1100
    • 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:4264
  • C:\Windows\SysWOW64\xamqvuis\tfrwtzym.exe
    C:\Windows\SysWOW64\xamqvuis\tfrwtzym.exe /d"C:\Users\Admin\AppData\Local\Temp\qkkcfptf.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2716
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • 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:4744

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    11.6MB

    MD5

    fed6d9f141d4ac6b3388a2c90722bd62

    SHA1

    3480f699c94d4a520c8d92dfd2f6c84d5bd9668b

    SHA256

    b84685b177c7bbd6e54c0cd81f5ac41c02e2c77a400b71a830636f93a686eaaf

    SHA512

    f678216084e177bc51879d697f6e4201449874ed1c6f4c41fc1cb62aecf8ed5c3ab17784c1d30c481ee99c727fe0a29cd2854bdcaf554b3da425d59b5e957719

  • memory/2716-11-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2716-18-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2716-12-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2716-13-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/4744-46-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-44-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-21-0x0000000002E00000-0x000000000300F000-memory.dmp

    Filesize

    2.1MB

  • memory/4744-24-0x0000000002E00000-0x000000000300F000-memory.dmp

    Filesize

    2.1MB

  • memory/4744-55-0x0000000007D00000-0x000000000810B000-memory.dmp

    Filesize

    4.0MB

  • memory/4744-14-0x0000000000F50000-0x0000000000F65000-memory.dmp

    Filesize

    84KB

  • memory/4744-25-0x0000000003010000-0x0000000003016000-memory.dmp

    Filesize

    24KB

  • memory/4744-17-0x0000000000F50000-0x0000000000F65000-memory.dmp

    Filesize

    84KB

  • memory/4744-19-0x0000000000F50000-0x0000000000F65000-memory.dmp

    Filesize

    84KB

  • memory/4744-43-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-52-0x0000000007D00000-0x000000000810B000-memory.dmp

    Filesize

    4.0MB

  • memory/4744-56-0x0000000008250000-0x0000000008257000-memory.dmp

    Filesize

    28KB

  • memory/4744-51-0x00000000031F0000-0x00000000031F5000-memory.dmp

    Filesize

    20KB

  • memory/4744-48-0x00000000031F0000-0x00000000031F5000-memory.dmp

    Filesize

    20KB

  • memory/4744-47-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-28-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-45-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-31-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-42-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-41-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-40-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-39-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-38-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-37-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-36-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-35-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-34-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-33-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4744-32-0x0000000003020000-0x0000000003030000-memory.dmp

    Filesize

    64KB

  • memory/4840-8-0x0000000002210000-0x0000000002223000-memory.dmp

    Filesize

    76KB

  • memory/4840-1-0x0000000000660000-0x0000000000760000-memory.dmp

    Filesize

    1024KB

  • memory/4840-2-0x0000000002210000-0x0000000002223000-memory.dmp

    Filesize

    76KB

  • memory/4840-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/4840-7-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/4840-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB