Windows 7 deprecation

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

Analysis

  • max time kernel
    144s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/10/2023, 06:57

General

  • Target

    file.exe

  • Size

    294KB

  • MD5

    44b65e6b1c5c97f08604d6386e073755

  • SHA1

    ef3a38c06da42adf5855c9ca04afc3a264189abb

  • SHA256

    6414aa1f08ec3168c6c2630d3ebd5d9a184c0520bfa3c8018d23e74ee088021c

  • SHA512

    bd397b6eafdecfa6e72bb990757650566512a4c7eb12d75479fa9ef7a481542be9ccb57f538f0ed4d2e4fe77444c3aa99043b0b78663d8c740f6736ec8d84e60

  • SSDEEP

    6144:U5ZKe+CEiMKqR3p5X0WVKwn01r7ufeQRM:UzB+CEfv3p5XtVKpCmQ

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) 1 TTPs
  • Modifies Windows Firewall 1 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.

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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).

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\upymyjri\
      2⤵
        PID:3936
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tazmuucg.exe" C:\Windows\SysWOW64\upymyjri\
        2⤵
          PID:3928
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create upymyjri binPath= "C:\Windows\SysWOW64\upymyjri\tazmuucg.exe /d\"C:\Users\Admin\AppData\Local\Temp\file.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:5056
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description upymyjri "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:672
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start upymyjri
          2⤵
          • Launches sc.exe
          PID:1812
        • 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
          PID:4464
      • C:\Windows\SysWOW64\upymyjri\tazmuucg.exe
        C:\Windows\SysWOW64\upymyjri\tazmuucg.exe /d"C:\Users\Admin\AppData\Local\Temp\file.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4980
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          PID:4664

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        Filesize

        14.3MB

        MD5

        a520963e75661189a58cc43dbecfbdc0

        SHA1

        9382a53c65ef447a7b0ae5cc91d2c7fd7b063d58

        SHA256

        5385dbaabc648dbf2d59d0418dd3eae364b0427d441a0ea59dc0d2276ff1c437

        SHA512

        5fb68fb1458477bae43ae4d97aeb1e32f02ad7cfff87c25a39c072f59a91788409831bd1dca01866d27b2fac930def1cc8969e89d4170d44391b9afcadc27940

      • C:\Windows\SysWOW64\upymyjri\tazmuucg.exe

        Filesize

        14.3MB

        MD5

        a520963e75661189a58cc43dbecfbdc0

        SHA1

        9382a53c65ef447a7b0ae5cc91d2c7fd7b063d58

        SHA256

        5385dbaabc648dbf2d59d0418dd3eae364b0427d441a0ea59dc0d2276ff1c437

        SHA512

        5fb68fb1458477bae43ae4d97aeb1e32f02ad7cfff87c25a39c072f59a91788409831bd1dca01866d27b2fac930def1cc8969e89d4170d44391b9afcadc27940

      • memory/4664-32-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-41-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-56-0x00000000019F0000-0x00000000019F7000-memory.dmp

        Filesize

        28KB

      • memory/4664-55-0x0000000007200000-0x000000000760B000-memory.dmp

        Filesize

        4.0MB

      • memory/4664-52-0x0000000007200000-0x000000000760B000-memory.dmp

        Filesize

        4.0MB

      • memory/4664-51-0x00000000019E0000-0x00000000019E5000-memory.dmp

        Filesize

        20KB

      • memory/4664-11-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4664-16-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4664-17-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4664-48-0x00000000019E0000-0x00000000019E5000-memory.dmp

        Filesize

        20KB

      • memory/4664-44-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-18-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4664-20-0x0000000000600000-0x0000000000615000-memory.dmp

        Filesize

        84KB

      • memory/4664-21-0x0000000002200000-0x000000000240F000-memory.dmp

        Filesize

        2.1MB

      • memory/4664-24-0x0000000002200000-0x000000000240F000-memory.dmp

        Filesize

        2.1MB

      • memory/4664-25-0x00000000007F0000-0x00000000007F6000-memory.dmp

        Filesize

        24KB

      • memory/4664-33-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-31-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-47-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-28-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-37-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-35-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-36-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-34-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-38-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-39-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-42-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-40-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-46-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-43-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4664-45-0x0000000000B20000-0x0000000000B30000-memory.dmp

        Filesize

        64KB

      • memory/4960-1-0x0000000002290000-0x0000000002390000-memory.dmp

        Filesize

        1024KB

      • memory/4960-4-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/4960-8-0x0000000003FE0000-0x0000000003FF3000-memory.dmp

        Filesize

        76KB

      • memory/4960-7-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/4960-2-0x0000000003FE0000-0x0000000003FF3000-memory.dmp

        Filesize

        76KB

      • memory/4980-15-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/4980-14-0x0000000000400000-0x0000000002287000-memory.dmp

        Filesize

        30.5MB

      • memory/4980-10-0x0000000002570000-0x0000000002670000-memory.dmp

        Filesize

        1024KB