Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    23/04/2026, 18:05

General

  • Target
    2026-04-23_8d0103816e95711bf5481e268f298da9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop.exe
  • Size 11.5MB
  • Sample260423-wpjcdscz9m
  • SHA256 06abe6e21f0d05e7f09b3409a578bb3be469bd48bfa2850b4c073122eae83ed5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • tofsee

C2
  • vanaheim.cn

  • jotunheim.name

Signatures

  • Family: Tofsee

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

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • Creates new service(s) 2 TTPs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Stops running service(s) 4 TTPs
  • 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.

  • Program crash 2 IoCs
  • 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.

  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-23_8d0103816e95711bf5481e268f298da9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-23_8d0103816e95711bf5481e268f298da9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:616
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wxudgzal\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5000
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uoogjtxj.exe" C:\Windows\SysWOW64\wxudgzal\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2432
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create wxudgzal binPath= "C:\Windows\SysWOW64\wxudgzal\uoogjtxj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2026-04-23_8d0103816e95711bf5481e268f298da9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3312
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description wxudgzal "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5612
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start wxudgzal
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:3672
    • 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:1992
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 616 -s 1100
      2⤵
      • Program crash
      PID:1620
  • C:\Windows\SysWOW64\wxudgzal\uoogjtxj.exe
    C:\Windows\SysWOW64\wxudgzal\uoogjtxj.exe /d"C:\Users\Admin\AppData\Local\Temp\2026-04-23_8d0103816e95711bf5481e268f298da9_amadey_elex_manuscrypt_rhadamanthys_smoke-loader_stop.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5792
    • C:\Windows\SysWOW64\svchost.exe
      svchost.exe
      2⤵
      • Sets service image path in registry
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5792 -s 544
      2⤵
      • Program crash
      PID:1256
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 616 -ip 616
    1⤵
      PID:6064
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 5792 -ip 5792
      1⤵
        PID:1608

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            uoogjtxj.exe

            • Path C:\Users\Admin\AppData\Local\Temp\uoogjtxj.exe
            • Size 11.9MB
            • SHA256 16a80d770a09f29c37df305ab0c75212be9a5aa3988e280b8c7a0185a81cc134
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/492-10-0x0000000000C10000-0x0000000000C25000-memory.dmp

            memory/492-12-0x0000000000C10000-0x0000000000C25000-memory.dmp

            memory/492-13-0x0000000000C10000-0x0000000000C25000-memory.dmp

            memory/616-1-0x0000000000AC0000-0x0000000000BC0000-memory.dmp

            memory/616-2-0x0000000000A40000-0x0000000000A53000-memory.dmp

            memory/616-8-0x0000000000A40000-0x0000000000A53000-memory.dmp

            memory/5792-9-0x0000000000B00000-0x0000000000C00000-memory.dmp