Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    30/03/2025, 09:22

General

  • Target

    2025-03-30_555cbc7420e3d52a2f8f86f5aae2431a_amadey_karagany_rhadamanthys_smoke-loader.exe

  • Size

    14.7MB

  • MD5

    555cbc7420e3d52a2f8f86f5aae2431a

  • SHA1

    17abf9482c047c46d9ec76fa9cc2b9c72cbff05b

  • SHA256

    6d016e7348c581442179a4c1e2461d69bdfffefa72b8a0bc60e181090713d214

  • SHA512

    7e12b55e739f297960c0015f0305fc2393f273dc638f9c7f46145e9c17066163c29a1102f9d0dfa45421cb1cc81ec3fe45f2abdc32a693ffa2fee0e519007f54

  • SSDEEP

    3072:mdh4rj43qHj/zjgRYR6lVatBLufQxMmYq7sxkgaBChJ:w4rj46/zjgRI2atBLTMYQigaq

Malware Config

Extracted

Family

tofsee

C2

niflheimr.cn

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Tofsee family
  • 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\2025-03-30_555cbc7420e3d52a2f8f86f5aae2431a_amadey_karagany_rhadamanthys_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-03-30_555cbc7420e3d52a2f8f86f5aae2431a_amadey_karagany_rhadamanthys_smoke-loader.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gmtvfa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1668
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jxrblzki.exe" C:\Windows\SysWOW64\gmtvfa\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1660
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create gmtvfa binPath= "C:\Windows\SysWOW64\gmtvfa\jxrblzki.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-03-30_555cbc7420e3d52a2f8f86f5aae2431a_amadey_karagany_rhadamanthys_smoke-loader.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2504
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description gmtvfa "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:1476
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start gmtvfa
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2880
    • 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:3036
  • C:\Windows\SysWOW64\gmtvfa\jxrblzki.exe
    C:\Windows\SysWOW64\gmtvfa\jxrblzki.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-03-30_555cbc7420e3d52a2f8f86f5aae2431a_amadey_karagany_rhadamanthys_smoke-loader.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2900
    • 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\jxrblzki.exe

    Filesize

    11.8MB

    MD5

    28c9384b06be543628e25bff227884ca

    SHA1

    b5d57dea9b70cd076cb122c35c972c9b1e21ae21

    SHA256

    d83136d7d14e830b35147d3ee4a010bd53d36e97279c3770b40b9fa39dc73470

    SHA512

    f15b68fbfdc0b253f3b42c28efb2c20eb2ab798fc9ebb3448bb7f6e62fab7d1c25ef8c880b9c0111c53a257d30bdae4518fc7c069de1e5718fd80146fbcad9fe

  • memory/2604-3-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2604-2-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2604-1-0x0000000000670000-0x0000000000770000-memory.dmp

    Filesize

    1024KB

  • memory/2604-8-0x0000000000400000-0x0000000000415000-memory.dmp

    Filesize

    84KB

  • memory/2604-7-0x0000000000220000-0x0000000000233000-memory.dmp

    Filesize

    76KB

  • memory/2604-6-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/2696-38-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-46-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-16-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2696-18-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2696-14-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2696-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2696-27-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-24-0x0000000000150000-0x0000000000156000-memory.dmp

    Filesize

    24KB

  • memory/2696-23-0x0000000001D40000-0x0000000001F4F000-memory.dmp

    Filesize

    2.1MB

  • memory/2696-20-0x0000000001D40000-0x0000000001F4F000-memory.dmp

    Filesize

    2.1MB

  • memory/2696-39-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-11-0x0000000000080000-0x0000000000095000-memory.dmp

    Filesize

    84KB

  • memory/2696-37-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-50-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/2696-47-0x00000000001F0000-0x00000000001F5000-memory.dmp

    Filesize

    20KB

  • memory/2696-51-0x0000000005620000-0x0000000005A2B000-memory.dmp

    Filesize

    4.0MB

  • memory/2696-45-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-44-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-43-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-42-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-41-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-40-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-36-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-35-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-34-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-33-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-32-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-31-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-30-0x0000000000160000-0x0000000000170000-memory.dmp

    Filesize

    64KB

  • memory/2696-55-0x0000000000640000-0x0000000000647000-memory.dmp

    Filesize

    28KB

  • memory/2696-54-0x0000000005620000-0x0000000005A2B000-memory.dmp

    Filesize

    4.0MB

  • memory/2900-17-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB