Analysis

  • max time kernel
    57s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    23-09-2024 19:46

General

  • Target

    ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4.exe

  • Size

    14.1MB

  • MD5

    82af93e89cf7525040978c5a5815c123

  • SHA1

    47193983774a29f19ada610751133ed5779915ac

  • SHA256

    ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4

  • SHA512

    08cfb9037aa05269f7303ddbdc522889b5486295d6a8445edc485f39d800eca682c202edf58350eb08d8b0e84c7232c6c2f94698f5951eab402c92f3d5b06d06

  • SSDEEP

    24576:0sPvIp7DpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpbpJ:lvY7

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
  • 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 5 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4.exe
    "C:\Users\Admin\AppData\Local\Temp\ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tszmgelm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2120
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\capxqgbx.exe" C:\Windows\SysWOW64\tszmgelm\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2404
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create tszmgelm binPath= "C:\Windows\SysWOW64\tszmgelm\capxqgbx.exe /d\"C:\Users\Admin\AppData\Local\Temp\ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1704
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description tszmgelm "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:860
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start tszmgelm
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2088
    • 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:2864
  • C:\Windows\SysWOW64\tszmgelm\capxqgbx.exe
    C:\Windows\SysWOW64\tszmgelm\capxqgbx.exe /d"C:\Users\Admin\AppData\Local\Temp\ad47fc74baa9ccd6f9b004a990b27393eba378eff2dcc7e2de3ce2b95501c7f4.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2748
    • 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:3024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    13.3MB

    MD5

    211d9b9d76ea870486b2270e9dcb9366

    SHA1

    24b5e18d0858159d1ef26a2dc2bdbc03ce918671

    SHA256

    97c4ec41dbfcb11d70a0e2cee3754f1ccd7d355bfb04487ea564c090c8b14f80

    SHA512

    6e6386b6d583a91e2c19c200fade33b6cfc19540f2a33292f1b55abeff13b7dbceb01a5481c6655dde2bc382892bd9f527ee4edaac432ef6416e9fc335c4c971

  • memory/2372-2-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2372-4-0x0000000000400000-0x0000000000683000-memory.dmp

    Filesize

    2.5MB

  • memory/2372-9-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2372-8-0x0000000000400000-0x0000000000683000-memory.dmp

    Filesize

    2.5MB

  • memory/2372-1-0x0000000000230000-0x0000000000330000-memory.dmp

    Filesize

    1024KB

  • memory/2748-16-0x0000000000400000-0x0000000000683000-memory.dmp

    Filesize

    2.5MB

  • memory/3024-54-0x0000000005560000-0x000000000596B000-memory.dmp

    Filesize

    4.0MB

  • memory/3024-45-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/3024-17-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3024-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3024-20-0x0000000001950000-0x0000000001B5F000-memory.dmp

    Filesize

    2.1MB

  • memory/3024-27-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-24-0x00000000000A0000-0x00000000000A6000-memory.dmp

    Filesize

    24KB

  • memory/3024-23-0x0000000001950000-0x0000000001B5F000-memory.dmp

    Filesize

    2.1MB

  • memory/3024-46-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-50-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/3024-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3024-55-0x0000000000260000-0x0000000000267000-memory.dmp

    Filesize

    28KB

  • memory/3024-51-0x0000000005560000-0x000000000596B000-memory.dmp

    Filesize

    4.0MB

  • memory/3024-47-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/3024-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/3024-44-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-43-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-42-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-41-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-40-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-39-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-38-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-37-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-36-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-35-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-34-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-33-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-32-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-31-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB

  • memory/3024-30-0x00000000001E0000-0x00000000001F0000-memory.dmp

    Filesize

    64KB