Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    115s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/09/2024, 02:22

General

  • Target

    3570b0f48378f2648f14f04bfc148ec0N.exe

  • Size

    191KB

  • MD5

    3570b0f48378f2648f14f04bfc148ec0

  • SHA1

    bccd7d4cb74cc45746aab0ea4f1e4909431b07e2

  • SHA256

    580374ec67e09e658a8094b35111a37d8e395c4d9893bc62f4b12de1f911eeb4

  • SHA512

    5ff75b6d99603318f3f5456c947bf6018d452ffb4f136453da8a71bb2443a3128d8dd0ba3ccdbee162b880761e7aee9db74feb908df0bd9c21aa419f57524410

  • SSDEEP

    1536:vwnZKshTFploXRY9PmoUAiZRuETzmsropBAaGCzP9HKglyI0q3uyPW5tZZT9HLaG:Kbba/PZRVesLG0g0kuyu5tXg7gq/

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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • 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.

  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3570b0f48378f2648f14f04bfc148ec0N.exe
    "C:\Users\Admin\AppData\Local\Temp\3570b0f48378f2648f14f04bfc148ec0N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2844
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zobhqqfy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1756
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kejhcfce.exe" C:\Windows\SysWOW64\zobhqqfy\
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1556
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" create zobhqqfy binPath= "C:\Windows\SysWOW64\zobhqqfy\kejhcfce.exe /d\"C:\Users\Admin\AppData\Local\Temp\3570b0f48378f2648f14f04bfc148ec0N.exe\"" type= own start= auto DisplayName= "wifi support"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:780
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" description zobhqqfy "wifi internet conection"
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2252
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\System32\sc.exe" start zobhqqfy
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:2156
    • 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:2564
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2844 -s 656
      2⤵
      • Program crash
      PID:2404
  • C:\Windows\SysWOW64\zobhqqfy\kejhcfce.exe
    C:\Windows\SysWOW64\zobhqqfy\kejhcfce.exe /d"C:\Users\Admin\AppData\Local\Temp\3570b0f48378f2648f14f04bfc148ec0N.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5064
    • 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:1828
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5064 -s 516
      2⤵
      • Program crash
      PID:4128
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5064 -ip 5064
    1⤵
      PID:3512
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 2844 -ip 2844
      1⤵
        PID:2168

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        13.1MB

        MD5

        635d8531973176764ec4b2d0434060b8

        SHA1

        ba1aa958f0557168e779f3378aacf2d612a9b960

        SHA256

        da085dfb191c683306887e2957fc3731d96bcc59c195f279793aa4edf57494a3

        SHA512

        f9a653b51863869eacb99e048a46122f39bc3f104da5dba4027959cc11b4de29b07d4b3c929313652c32f1daf7fb96e6cd8a3131ae46b1fb59affdea6ac8cc27

      • memory/1828-41-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-32-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-24-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-8-0x0000000000D60000-0x0000000000D75000-memory.dmp

        Filesize

        84KB

      • memory/1828-18-0x0000000002C00000-0x0000000002E0F000-memory.dmp

        Filesize

        2.1MB

      • memory/1828-20-0x0000000002C00000-0x0000000002E0F000-memory.dmp

        Filesize

        2.1MB

      • memory/1828-21-0x0000000002310000-0x0000000002316000-memory.dmp

        Filesize

        24KB

      • memory/1828-51-0x0000000007B40000-0x0000000007F4B000-memory.dmp

        Filesize

        4.0MB

      • memory/1828-14-0x0000000000D60000-0x0000000000D75000-memory.dmp

        Filesize

        84KB

      • memory/1828-15-0x0000000000D60000-0x0000000000D75000-memory.dmp

        Filesize

        84KB

      • memory/1828-37-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-47-0x00000000023F0000-0x00000000023F5000-memory.dmp

        Filesize

        20KB

      • memory/1828-52-0x00000000031D0000-0x00000000031D7000-memory.dmp

        Filesize

        28KB

      • memory/1828-48-0x0000000007B40000-0x0000000007F4B000-memory.dmp

        Filesize

        4.0MB

      • memory/1828-44-0x00000000023F0000-0x00000000023F5000-memory.dmp

        Filesize

        20KB

      • memory/1828-43-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-27-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-28-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-29-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-39-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-38-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-36-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-35-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-34-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-33-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-42-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-31-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-30-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/1828-40-0x0000000002320000-0x0000000002330000-memory.dmp

        Filesize

        64KB

      • memory/2844-3-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2844-2-0x00000000024B0000-0x00000000024C3000-memory.dmp

        Filesize

        76KB

      • memory/2844-10-0x0000000000400000-0x000000000234D000-memory.dmp

        Filesize

        31.3MB

      • memory/2844-12-0x00000000024B0000-0x00000000024C3000-memory.dmp

        Filesize

        76KB

      • memory/2844-13-0x0000000000400000-0x0000000000415000-memory.dmp

        Filesize

        84KB

      • memory/2844-1-0x0000000002590000-0x0000000002690000-memory.dmp

        Filesize

        1024KB

      • memory/5064-11-0x0000000000400000-0x000000000234D000-memory.dmp

        Filesize

        31.3MB