Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-09-2024 06:44

General

  • Target

    2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5.exe

  • Size

    11.8MB

  • MD5

    b32f61c5c47e9473cf4a0ac98e8143c1

  • SHA1

    d6de6d48a87510f4ba641785e56311a4732dcf26

  • SHA256

    2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5

  • SHA512

    cc0cc0499616d0277920597b7beb8ee0b53d99c9e8d8c827c6e2244dc9a98785a848f17368f6991d362f9b6f76cd3a1f7ebcc31e99c34097c458872336ab5c21

  • SSDEEP

    6144:9c6OZDisWsD0Td2HJxO+m8PuG1R4WnWjrsaz:91OZDisvwdaxO0PuG1R4CWs

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\2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5.exe
    "C:\Users\Admin\AppData\Local\Temp\2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2192
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kinoqsxe\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2796
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ubanvvdh.exe" C:\Windows\SysWOW64\kinoqsxe\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2732
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create kinoqsxe binPath= "C:\Windows\SysWOW64\kinoqsxe\ubanvvdh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2608
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description kinoqsxe "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1012
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start kinoqsxe
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2688
    • 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:2748
  • C:\Windows\SysWOW64\kinoqsxe\ubanvvdh.exe
    C:\Windows\SysWOW64\kinoqsxe\ubanvvdh.exe /d"C:\Users\Admin\AppData\Local\Temp\2d49ab2f33264eb29d38ab91a7c6dc193a6a0fa65260b0295b1123c18612d7c5.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2568
    • 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:2696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    12.7MB

    MD5

    36d3d071261d8c044d0b76b98cc0740c

    SHA1

    1c7ea457cd7b74c3bed2d87e9a2592672d9ca2dd

    SHA256

    cba2defe964dd026bac1b35ecd00d4a2919fd3e15fc35821d23ef88d707fe2ba

    SHA512

    0413c81421b077e8047ad8869d307681e253136bb8cf5eec8504fe2107a84e28952c3ed648a1820be7b019e150e9e2095c9bf577072fbf4ead9ddf0c31007872

  • memory/2192-15-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2192-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2192-4-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2192-1-0x0000000000760000-0x0000000000860000-memory.dmp

    Filesize

    1024KB

  • memory/2192-14-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2568-12-0x0000000000400000-0x00000000005FE000-memory.dmp

    Filesize

    2.0MB

  • memory/2696-46-0x0000000000230000-0x0000000000235000-memory.dmp

    Filesize

    20KB

  • memory/2696-42-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2696-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2696-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2696-22-0x00000000019B0000-0x0000000001BBF000-memory.dmp

    Filesize

    2.1MB

  • memory/2696-19-0x00000000019B0000-0x0000000001BBF000-memory.dmp

    Filesize

    2.1MB

  • memory/2696-54-0x00000000006E0000-0x00000000006E7000-memory.dmp

    Filesize

    28KB

  • memory/2696-53-0x00000000054C0000-0x00000000058CB000-memory.dmp

    Filesize

    4.0MB

  • memory/2696-50-0x00000000054C0000-0x00000000058CB000-memory.dmp

    Filesize

    4.0MB

  • memory/2696-49-0x0000000000230000-0x0000000000235000-memory.dmp

    Filesize

    20KB

  • memory/2696-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2696-45-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-44-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-43-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-8-0x00000000000D0000-0x00000000000E5000-memory.dmp

    Filesize

    84KB

  • memory/2696-41-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-40-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-39-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-38-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-37-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-36-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-35-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-34-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-33-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-32-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-31-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-30-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-29-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-26-0x00000000001A0000-0x00000000001B0000-memory.dmp

    Filesize

    64KB

  • memory/2696-23-0x0000000000080000-0x0000000000086000-memory.dmp

    Filesize

    24KB