Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    17-04-2024 12:22

General

  • Target

    7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8.exe

  • Size

    229KB

  • MD5

    ddb3205a92ff18ae17b3f9f93c7b197c

  • SHA1

    b77c666a2d7b1f63ba08316f9a221be6ac1f786a

  • SHA256

    7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8

  • SHA512

    db659ead4fd2ed186f221adf5bb9ab5b686253454eeb307ba247a99d8026c009d72ed11473d4622146c7b6cf59f445ad3b020ac3394d3f61af5bfd385b43c334

  • SSDEEP

    3072:lnUQviqZALXadUs0vEJimn1K29YbqYZgpLneYDR89fJ5j3UxS6MeILYS:lnUzPjflapLnsdT3U2eILY

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) 1 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
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8.exe
    "C:\Users\Admin\AppData\Local\Temp\7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uheqdmql\
      2⤵
        PID:1956
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qckhnage.exe" C:\Windows\SysWOW64\uheqdmql\
        2⤵
          PID:2496
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create uheqdmql binPath= "C:\Windows\SysWOW64\uheqdmql\qckhnage.exe /d\"C:\Users\Admin\AppData\Local\Temp\7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:2580
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description uheqdmql "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3064
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start uheqdmql
          2⤵
          • Launches sc.exe
          PID:2576
        • 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
          PID:2160
      • C:\Windows\SysWOW64\uheqdmql\qckhnage.exe
        C:\Windows\SysWOW64\uheqdmql\qckhnage.exe /d"C:\Users\Admin\AppData\Local\Temp\7c44a7de2a7c4175c761e08a2de5d2acd42ad3195d7686e5b8d507f99c30adc8.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2624
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:2524

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Persistence

      Create or Modify System Process

      2
      T1543

      Windows Service

      2
      T1543.003

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Create or Modify System Process

      2
      T1543

      Windows Service

      2
      T1543.003

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Impair Defenses

      2
      T1562

      Disable or Modify Tools

      1
      T1562.001

      Disable or Modify System Firewall

      1
      T1562.004

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\qckhnage.exe
        Filesize

        10.9MB

        MD5

        6eb149a06d11a0a145794eedd3a0e04a

        SHA1

        8fb0b2bd96e2b6187bf441bc476e38a8873ba816

        SHA256

        f2234eb89daafa34f6c2a324844088ce7c588702f302f5fdc7ca92879b156da3

        SHA512

        6e635c57c38eb0ce3965eb9270e879cc2a3c344822a29d24f81babe2685c74f5412d0a8a0b5b3d484553aef7d88055312f096c948dda5af23871067e81f7a22e

      • memory/1688-1-0x00000000005A0000-0x00000000006A0000-memory.dmp
        Filesize

        1024KB

      • memory/1688-2-0x0000000000220000-0x0000000000233000-memory.dmp
        Filesize

        76KB

      • memory/1688-3-0x0000000000400000-0x000000000043E000-memory.dmp
        Filesize

        248KB

      • memory/1688-8-0x0000000000220000-0x0000000000233000-memory.dmp
        Filesize

        76KB

      • memory/1688-7-0x0000000000400000-0x000000000043E000-memory.dmp
        Filesize

        248KB

      • memory/2524-39-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-34-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-15-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

      • memory/2524-61-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

      • memory/2524-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/2524-12-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

      • memory/2524-19-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

      • memory/2524-20-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

      • memory/2524-22-0x0000000001850000-0x0000000001A5F000-memory.dmp
        Filesize

        2.1MB

      • memory/2524-25-0x0000000001850000-0x0000000001A5F000-memory.dmp
        Filesize

        2.1MB

      • memory/2524-26-0x0000000000150000-0x0000000000156000-memory.dmp
        Filesize

        24KB

      • memory/2524-29-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-37-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-36-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-57-0x0000000000220000-0x0000000000227000-memory.dmp
        Filesize

        28KB

      • memory/2524-38-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-35-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-56-0x00000000059B0000-0x0000000005DBB000-memory.dmp
        Filesize

        4.0MB

      • memory/2524-33-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-40-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-45-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-46-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-44-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-48-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-47-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-49-0x0000000000210000-0x0000000000215000-memory.dmp
        Filesize

        20KB

      • memory/2524-52-0x0000000000210000-0x0000000000215000-memory.dmp
        Filesize

        20KB

      • memory/2524-43-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-42-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-41-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-32-0x0000000000200000-0x0000000000210000-memory.dmp
        Filesize

        64KB

      • memory/2524-53-0x00000000059B0000-0x0000000005DBB000-memory.dmp
        Filesize

        4.0MB

      • memory/2624-11-0x0000000000400000-0x000000000043E000-memory.dmp
        Filesize

        248KB

      • memory/2624-10-0x0000000000580000-0x0000000000680000-memory.dmp
        Filesize

        1024KB

      • memory/2624-17-0x0000000000400000-0x000000000043E000-memory.dmp
        Filesize

        248KB