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Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/09/2024, 16:58

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.

  • 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\qkkcfptf.exe
    "C:\Users\Admin\AppData\Local\Temp\qkkcfptf.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2128
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\axtacgjn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1904
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mcyniayg.exe" C:\Windows\SysWOW64\axtacgjn\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3044
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create axtacgjn binPath= "C:\Windows\SysWOW64\axtacgjn\mcyniayg.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:2316
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description axtacgjn "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2868
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start axtacgjn
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3068
    • 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:2632
  • C:\Windows\SysWOW64\axtacgjn\mcyniayg.exe
    C:\Windows\SysWOW64\axtacgjn\mcyniayg.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:2732
    • 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:2768

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.3MB

    MD5

    cac11fde48914534e73b5a284e76d6e8

    SHA1

    db9b06d7808437b18f4c8ffab8db5bd694e04abd

    SHA256

    edd44154b4da01e7d1622e44598f2b254f3d4d917c030d40c38756b74991c1ce

    SHA512

    e7d11ce065bf8468b7c6c685b771ec3fff2f55cef9622153b431896a6dbf9e8ffb43da8d6c8c8979d4ac9914f00e1587aea7febe25291e782debced44de88b99

  • memory/2128-14-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2128-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2128-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2128-1-0x0000000000730000-0x0000000000830000-memory.dmp

    Filesize

    1024KB

  • memory/2128-15-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2128-16-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2732-12-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2768-30-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-47-0x0000000000200000-0x0000000000205000-memory.dmp

    Filesize

    20KB

  • memory/2768-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2768-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2768-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2768-27-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-24-0x0000000000150000-0x0000000000156000-memory.dmp

    Filesize

    24KB

  • memory/2768-20-0x0000000001780000-0x000000000198F000-memory.dmp

    Filesize

    2.1MB

  • memory/2768-23-0x0000000001780000-0x000000000198F000-memory.dmp

    Filesize

    2.1MB

  • memory/2768-34-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2768-31-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-32-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-43-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-50-0x0000000000200000-0x0000000000205000-memory.dmp

    Filesize

    20KB

  • memory/2768-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

    Filesize

    84KB

  • memory/2768-46-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-45-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-44-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-42-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-41-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-40-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-39-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-38-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-37-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-36-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-35-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-33-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2768-54-0x0000000005510000-0x000000000591B000-memory.dmp

    Filesize

    4.0MB

  • memory/2768-55-0x0000000000240000-0x0000000000247000-memory.dmp

    Filesize

    28KB

  • memory/2768-51-0x0000000005510000-0x000000000591B000-memory.dmp

    Filesize

    4.0MB