Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-06-2024 21:00

General

  • Target

    Xworm V5.6.exe

  • Size

    15.8MB

  • MD5

    f192b4e9cf07850041e19ea07cd984e3

  • SHA1

    061a917e9691648e00a7f91ff82ae1c0e8da248b

  • SHA256

    515b7bd886b37d24fa02bb3d9b1ecf31f887bb46834787771722236d40c565c7

  • SHA512

    19b9c0c214534d23e134fb29b6b1091ecb8c83f64df1e28219748a61d96bbef31141bb0e8237a5a96ac8bed6c233da6194c719f2c1470155d0a8ad3c194a2f5a

  • SSDEEP

    393216:bZ81TpBxAxlcciQ2RRkaZECMV8ElgSgq4nZ:bpB2jk3Vvlh6

Malware Config

Extracted

Family

xworm

C2

192.168.1.8:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClienamrt.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Drops startup file 6 IoCs
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops autorun.inf file 1 TTPs 5 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 41 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
    "C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4272
    • C:\Users\Admin\AppData\Roaming\Outputbinded.exe
      "C:\Users\Admin\AppData\Roaming\Outputbinded.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2228
      • C:\Users\Admin\AppData\Roaming\XClientamor.exe
        "C:\Users\Admin\AppData\Roaming\XClientamor.exe"
        3⤵
        • Checks computer location settings
        • Drops startup file
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2736
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClientamor.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4320
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClientamor.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1680
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClienamrt.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3088
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClienamrt.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2432
    • C:\Users\Admin\AppData\Roaming\Xworm V5.6.exe
      "C:\Users\Admin\AppData\Roaming\Xworm V5.6.exe"
      2⤵
      • Executes dropped EXE
      PID:2104
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\amr.js"
      2⤵
        PID:4076
      • C:\Users\Admin\AppData\Roaming\Server.exe
        "C:\Users\Admin\AppData\Roaming\Server.exe"
        2⤵
        • Drops startup file
        • Executes dropped EXE
        • Drops autorun.inf file
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4996
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Server.exe" "Server.exe" ENABLE
          3⤵
          • Modifies Windows Firewall
          PID:5004
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\myronworm.vbs"
        2⤵
        • Checks computer location settings
        • Drops startup file
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:3676
        • C:\Windows\System32\wscript.exe
          "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Local\Temp\myronworm.vbs"
          3⤵
          • Drops startup file
          • Adds Run key to start application
          PID:4912

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      d85ba6ff808d9e5444a4b369f5bc2730

      SHA1

      31aa9d96590fff6981b315e0b391b575e4c0804a

      SHA256

      84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

      SHA512

      8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      944B

      MD5

      10fb30dc297f99d6ebafa5fee8b24fa2

      SHA1

      76904509313a49a765edcde26b69c3a61f9fa225

      SHA256

      567bcacac120711fc04bf8e6c8cd0bff7b61e8ee0a6316254d1005ebb1264e6a

      SHA512

      c42ace1ea0923fa55592f4f486a508ea56997fdbe0200016b0fc16a33452fc28e4530129a315b3b3a5ede37a07097c13a0eb310c9e91e5d97bb7ce7b955b9498

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      944B

      MD5

      77d622bb1a5b250869a3238b9bc1402b

      SHA1

      d47f4003c2554b9dfc4c16f22460b331886b191b

      SHA256

      f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

      SHA512

      d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      944B

      MD5

      e60eb305a7b2d9907488068b7065abd3

      SHA1

      1643dd7f915ac50c75bc01c53d68c5dafb9ce28d

      SHA256

      ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135

      SHA512

      95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ftevfgf.dnh.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\Outputbinded.exe

      Filesize

      686KB

      MD5

      5d692aa620cbca52d380150edcf51377

      SHA1

      bfaaf5ea9910324e3d9f3d95c5a8ca4d94924d86

      SHA256

      65302dc08b26b59a91943d82c7c5b79a017164bd7623576cbefcb9851098bf3c

      SHA512

      0c3e90f6e169a9876f4095774d6fec1b76bc0e23c00b254610ed58f4238bcd0547c7f8974d171587783659752c415267cb4d2499f1a6ac18ed7760f78103bc67

    • C:\Users\Admin\AppData\Roaming\Server.exe

      Filesize

      242KB

      MD5

      2355cb5fc18f1e7a0cffa302d1bfebff

      SHA1

      3703ec0c5299c2861d05f92b3cf16191b982d38a

      SHA256

      d4550f31de4c62eb2012f9bb984a00ab0e8d865098322dcd4d5db94b7107b986

      SHA512

      256700d2605dc4bbdac8b72470b2e24992da10572b564a478553bd7d5bea5e91f488ae46fe5d42320a558d6d9c3b43134c54998c40a4c690e29e5dd73bae3cab

    • C:\Users\Admin\AppData\Roaming\XClientamor.exe

      Filesize

      260KB

      MD5

      9b839a50e55b18129f81629c61f912f7

      SHA1

      71e1feea8c12bd8b2501bf065d56fef8eae0517c

      SHA256

      92a21332ad995d61804e80d50abd6571a6faf3932ad574ff23939e84362485ae

      SHA512

      abcb038106c8c771c39a66f1f79885619a0a031a567d2a84acfb848545c8cd12dc1e64baa14f1151229de2abaf68fc023f6455cb47d6b29ec90832d0f2de9971

    • C:\Users\Admin\AppData\Roaming\Xworm V5.6.exe

      Filesize

      14.9MB

      MD5

      56ccb739926a725e78a7acf9af52c4bb

      SHA1

      5b01b90137871c3c8f0d04f510c4d56b23932cbc

      SHA256

      90f58865f265722ab007abb25074b3fc4916e927402552c6be17ef9afac96405

      SHA512

      2fee662bc4a1a36ce7328b23f991fa4a383b628839e403d6eb6a9533084b17699a6c939509867a86e803aafef2f9def98fa9305b576dad754aa7f599920c19a1

    • C:\Users\Admin\AppData\Roaming\amr.js

      Filesize

      3KB

      MD5

      e58364ddc8daeac92739f0b2c7547f9c

      SHA1

      ae2aa6f9cb8f4627d83c6158571689d596294cfe

      SHA256

      d03047394e431fbc6d68c74d2ac5348801ff1c4d7d3e12b1e3d873474c3cdf30

      SHA512

      d3e710f1c70883d5576ecdfec705c8edc671c533ebd353048c02d3bc8d9499a18d62c1cee8532d9c9ce325ca4966e53b40322e428cc0b20070971b974f8a673b

    • C:\Users\Admin\AppData\Roaming\myronworm.vbs

      Filesize

      9KB

      MD5

      120aaed75e85209923d8fd9f5718d3d5

      SHA1

      ea7d8bdceeb399c221743089cb0484863775e31d

      SHA256

      30c959f6c7c85698d06513048ca92f5615260fb877bb17be0baa24b164575409

      SHA512

      deed7f6cc041e2df572ee921f6ee31f332ccfc248e365a9f586ac1fb5a9864e68b7917632544f5fb33b48289d1607017d95cac281d0908671f5469fe84b235a8

    • memory/2104-51-0x000002A0883D0000-0x000002A0892B8000-memory.dmp

      Filesize

      14.9MB

    • memory/2228-32-0x00007FF8F8F30000-0x00007FF8F99F1000-memory.dmp

      Filesize

      10.8MB

    • memory/2228-15-0x00007FF8F8F30000-0x00007FF8F99F1000-memory.dmp

      Filesize

      10.8MB

    • memory/2228-13-0x0000000000AE0000-0x0000000000B90000-memory.dmp

      Filesize

      704KB

    • memory/2736-27-0x0000000000C10000-0x0000000000C56000-memory.dmp

      Filesize

      280KB

    • memory/4272-0-0x00007FF8F8F33000-0x00007FF8F8F35000-memory.dmp

      Filesize

      8KB

    • memory/4272-1-0x0000000000EF0000-0x0000000001ECE000-memory.dmp

      Filesize

      15.9MB

    • memory/4320-70-0x000001E659200000-0x000001E659222000-memory.dmp

      Filesize

      136KB