Analysis

  • max time kernel
    318s
  • max time network
    308s
  • platform
    windows7_x64
  • resource
    win7-de-20211014
  • submitted
    21-10-2021 12:38

General

  • Target

    Tornado.exe

  • Size

    331.0MB

  • MD5

    2acf755a8825894b837989ce1ae3db1d

  • SHA1

    17d5590e64a1df1470e83f79eb935d78bc218c2d

  • SHA256

    876dbe0fdf3f4ec70bd1985bf7c6f661b1105efd591407a6dd7ca7506bc61adf

  • SHA512

    f5ca9da28f33097e92714f1e329d62fa8b98afe35bdaaf9e4941ad8f46c9350df74117b4712abc83c7bf44d6a1cb357b44bfb426d7ab0eeb88b3c813e99eef4b

Malware Config

Signatures

  • suricata: ET MALWARE Arechclient2 Backdoor CnC Init

    suricata: ET MALWARE Arechclient2 Backdoor CnC Init

  • Executes dropped EXE 4 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 51 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Tornado.exe
    "C:\Users\Admin\AppData\Local\Temp\Tornado.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QAAoAGUAYwBoAG8AIABvAGYAZgAlACkAWwAxAF0ADQAKAEEAZABkAC0ATQBwAFAAcgBlAGYAZQByAGUAbgBjAGUAIAAtAEUAeABjAGwAdQBzAGkAbwBuAFAAYQB0AGgAIAAiAEMAOgBcACIA
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1032
    • C:\Users\Admin\AppData\Local\Temp\tmpC3CC.tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmpC3CC.tmp.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:840
      • C:\Windows\SysWOW64\dllhost.exe
        dllhost.exe
        3⤵
          PID:976
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c cmd < Starne.mid
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1292
          • C:\Windows\SysWOW64\cmd.exe
            cmd
            4⤵
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1788
            • C:\Windows\SysWOW64\findstr.exe
              findstr /V /R "^kXhUbWhdyiSzQwKWBBZJjppRDRvuTjJfOgrsoBnWshULiZzcvfBNflRwOcsFmuvSnDFCYzOqeeaZfbKDnwKEL$" Sorte.mid
              5⤵
                PID:1784
              • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
                Nascondere.exe.com W
                5⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious use of WriteProcessMemory
                PID:1200
                • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
                  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com W
                  6⤵
                  • Executes dropped EXE
                  • Drops startup file
                  • Loads dropped DLL
                  • Suspicious use of SetThreadContext
                  • Suspicious use of WriteProcessMemory
                  PID:1740
                  • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
                    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
                    7⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1176
              • C:\Windows\SysWOW64\PING.EXE
                ping localhost
                5⤵
                • Runs ping.exe
                PID:2008

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Defense Evasion

      Modify Registry

      1
      T1112

      Credential Access

      Credentials in Files

      2
      T1081

      Discovery

      Query Registry

      1
      T1012

      System Information Discovery

      1
      T1082

      Remote System Discovery

      1
      T1018

      Collection

      Data from Local System

      2
      T1005

      Command and Control

      Web Service

      1
      T1102

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Ambo.mid
        MD5

        e44fd575c6528190adc21c41297c7f0f

        SHA1

        4a834789bb3ddeea37cd30861a4c0bb639eeafed

        SHA256

        9ae0b37e4b26a6684eed731f3c3958e3661a3da9a89759825b97efebfe183547

        SHA512

        443f8aff20c51f236b16eba5dbe3890d157f85909ab36b1d084142836a343e6acb97e752d18819bec62e1458a038d9b24c609602dc3cbef87d959e597e0af19f

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Ami.mid
        MD5

        c2a501f010bf7b1c7a9777c3b93e19ef

        SHA1

        d00adfeb88b435786f32cf7f45c1aae141690600

        SHA256

        312d9b0380e5d8fd0bbee92b5d7f22a09b9278cbd7457777a08e2df5a859aff9

        SHA512

        2850ad61312adc4d059e62c7dfaebabaa74ac280773e24920b746a56884d8c490b1d5c6637d56c966ca284a9cd515330d38faff55cfe77a1bd11f54f2c82f6fd

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
        MD5

        b58b926c3574d28d5b7fdd2ca3ec30d5

        SHA1

        d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

        SHA256

        6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

        SHA512

        b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
        MD5

        b58b926c3574d28d5b7fdd2ca3ec30d5

        SHA1

        d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

        SHA256

        6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

        SHA512

        b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Sorte.mid
        MD5

        ca6c6b8893411108280a0daf1a4d7d61

        SHA1

        b791c3cdec5711baafa7be643d2d9a0a10ae0835

        SHA256

        61b5e21e9798a8bf59a1c2e284d78d86706b4dc9bd6bef46bce54af95886bb46

        SHA512

        c0f8c6e6c08a96d6bc9b77af1f300d45b011faa606c85b6220b89d890692d200230c16a206fa6c94a5f9e1568eb10181199a0d6b80b94f80706a5cd00f4fdbcf

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Starne.mid
        MD5

        603011f56db8309b2d5c4ea0a1c57a47

        SHA1

        91ffdd8dbc6c5935c954f2764bec480ae32a1432

        SHA256

        5e4c34d70260f9bc2ce9f44b8fdef503667493f8d7c9d13b659da3b270a053f0

        SHA512

        b1d53112fb89fc755e3933e88bcabd1ce2a2aa0032c948530769d96d06ca066d106fcdf2127348e618c7aac8b24b21ddbbdbdfd5113a641dbcd2da217d9ebdbe

      • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\W
        MD5

        e44fd575c6528190adc21c41297c7f0f

        SHA1

        4a834789bb3ddeea37cd30861a4c0bb639eeafed

        SHA256

        9ae0b37e4b26a6684eed731f3c3958e3661a3da9a89759825b97efebfe183547

        SHA512

        443f8aff20c51f236b16eba5dbe3890d157f85909ab36b1d084142836a343e6acb97e752d18819bec62e1458a038d9b24c609602dc3cbef87d959e597e0af19f

      • C:\Users\Admin\AppData\Local\Temp\tmpC3CC.tmp.exe
        MD5

        44150395748c027ef5f8eed812f620b0

        SHA1

        0d26c44e5e93a08da7504344498d3275ca11653e

        SHA256

        144525451ace8e714f95f6235f310b6959871e559e11f33f3164006a02832a7f

        SHA512

        5ba96935ebacd7c4e377c3171d411e7383132eed1c087ef66c3fe1a54987f826ac9221a1f43f4cc6627d184f7621dca6858b84ae692bde127bdf9d3a7bc04a4c

      • \Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • \Users\Admin\AppData\Local\Temp\IXP000.TMP\Nascondere.exe.com
        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • \Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
        MD5

        b58b926c3574d28d5b7fdd2ca3ec30d5

        SHA1

        d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

        SHA256

        6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

        SHA512

        b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

      • \Users\Admin\AppData\Local\Temp\IXP000.TMP\RegAsm.exe
        MD5

        b58b926c3574d28d5b7fdd2ca3ec30d5

        SHA1

        d260c4ffd603a9cfc057fcb83d678b1cecdf86f9

        SHA256

        6e70b56d748c4ccab13cc8a055d3795ea0dd95fe3b70568d7d3ac0c6621140a3

        SHA512

        b13cb998822b716b695013bcd6dec62a2290567d0d1743b2d982ca084235cf69c6ea1fc91c9d4e62657c6f9e102c7c60e81296ab055ffe43b887c5f8ec8958ab

      • \Users\Admin\AppData\Local\Temp\tmpC3CC.tmp.exe
        MD5

        44150395748c027ef5f8eed812f620b0

        SHA1

        0d26c44e5e93a08da7504344498d3275ca11653e

        SHA256

        144525451ace8e714f95f6235f310b6959871e559e11f33f3164006a02832a7f

        SHA512

        5ba96935ebacd7c4e377c3171d411e7383132eed1c087ef66c3fe1a54987f826ac9221a1f43f4cc6627d184f7621dca6858b84ae692bde127bdf9d3a7bc04a4c

      • \Users\Admin\AppData\Local\Temp\tmpC3CC.tmp.exe
        MD5

        44150395748c027ef5f8eed812f620b0

        SHA1

        0d26c44e5e93a08da7504344498d3275ca11653e

        SHA256

        144525451ace8e714f95f6235f310b6959871e559e11f33f3164006a02832a7f

        SHA512

        5ba96935ebacd7c4e377c3171d411e7383132eed1c087ef66c3fe1a54987f826ac9221a1f43f4cc6627d184f7621dca6858b84ae692bde127bdf9d3a7bc04a4c

      • memory/560-59-0x00000000006E5000-0x00000000006F6000-memory.dmp
        Filesize

        68KB

      • memory/560-58-0x00000000006E0000-0x00000000006E1000-memory.dmp
        Filesize

        4KB

      • memory/560-57-0x0000000075CB1000-0x0000000075CB3000-memory.dmp
        Filesize

        8KB

      • memory/560-55-0x00000000002F0000-0x00000000002F1000-memory.dmp
        Filesize

        4KB

      • memory/840-67-0x0000000000000000-mapping.dmp
      • memory/976-69-0x0000000000000000-mapping.dmp
      • memory/1032-63-0x0000000002540000-0x000000000318A000-memory.dmp
        Filesize

        12.3MB

      • memory/1032-64-0x0000000002540000-0x000000000318A000-memory.dmp
        Filesize

        12.3MB

      • memory/1032-62-0x0000000002540000-0x000000000318A000-memory.dmp
        Filesize

        12.3MB

      • memory/1032-60-0x0000000000000000-mapping.dmp
      • memory/1176-89-0x00000000000F0000-0x00000000001A2000-memory.dmp
        Filesize

        712KB

      • memory/1176-91-0x00000000000F0000-0x00000000001A2000-memory.dmp
        Filesize

        712KB

      • memory/1176-97-0x00000000000F0000-0x00000000001A2000-memory.dmp
        Filesize

        712KB

      • memory/1176-99-0x00000000056A0000-0x00000000056A1000-memory.dmp
        Filesize

        4KB

      • memory/1200-77-0x0000000000000000-mapping.dmp
      • memory/1292-70-0x0000000000000000-mapping.dmp
      • memory/1740-90-0x0000000000120000-0x0000000000121000-memory.dmp
        Filesize

        4KB

      • memory/1740-84-0x0000000000000000-mapping.dmp
      • memory/1784-73-0x0000000000000000-mapping.dmp
      • memory/1788-72-0x0000000000000000-mapping.dmp
      • memory/2008-79-0x0000000000000000-mapping.dmp