Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 12:52

General

  • Target

    KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe

  • Size

    516KB

  • MD5

    ae18fe8ea57bf020d7471c6a6132c06a

  • SHA1

    4f12697ac3205690edd4b3b2cb24306ca6107597

  • SHA256

    45434befb4ed9537e306b346f7ca303e5c01f0c288378695278c8c2dd82e626a

  • SHA512

    52d9166895efc0020b45998185a6616519582941a34e18be19252e592c38510d280ecc4206c2e6abf6103bd04de423f073b2db2e581ec9b7df7f5c966bc3da5e

  • SSDEEP

    12288:oPOt06hFiwaFurxUAdGfulE/BgsY/lae:Zt02FiwaFrAdGfDY

Malware Config

Extracted

Family

xworm

C2

104.250.180.178:7061

Attributes
  • Install_directory

    %AppData%

  • install_file

    XClient.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe
    "C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4436
    • C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe
      "C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1424
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2312
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4524
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4992
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3328
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1344 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:4860

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\KAOHSIUNG-SGP (SO#4882) 531 - (BL TELEX RELEASE).scr.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      968cb9309758126772781b83adb8a28f

      SHA1

      8da30e71accf186b2ba11da1797cf67f8f78b47c

      SHA256

      92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

      SHA512

      4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

      Filesize

      18KB

      MD5

      700c1cf4b766cd3237bda59056a7cf73

      SHA1

      cd3db22bf4f394a3bce9b47dcc5632448aeb672b

      SHA256

      d80bef77d8e44c57e3d02689ab8ca43fc991b805c7af58e3d69b9f71121831ff

      SHA512

      5e4ff26fcf275eb445d954f3640a1ea605e6b8062ef98aea9d9761abfeebd6b6d4fa64eaf52ac7741447ababe7e76cec9e61dbe45a8fcc10266c3528207741e8

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

      Filesize

      18KB

      MD5

      e3b1f351de5029ec889f73b7396fc8bf

      SHA1

      e444d3499d795246724a83ea66fc02df04ee039e

      SHA256

      6caa198af46fff3ccbe5ebf79ae755f616ae7e2ddbae1be6207571753628f7a5

      SHA512

      a8d05042317f6837324e710ce73f168f73791ac8921e524588b605c2c95fda52220f5589169beabf17d773cbae33348f83c7874dd2c77f55fa6117455a95400b

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

      Filesize

      18KB

      MD5

      be60db2bee5bd5e3b515f076c91bd848

      SHA1

      7b57880caa7226925dfce749b985c247822a895b

      SHA256

      73d4a808e3a5ec65795ee8473118f49f6586d3d909c48dab8801c05863be42dc

      SHA512

      b950aa7e2f5dae9d3079001242a0242986a393b04a92c00a80ac2a5ed953b1e82d563611f2d0d214d69384cff251c6f53f4a70cf97ccf97977f5514c3c136354

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b0osnowg.xvh.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1424-129-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/1424-128-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/1424-122-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/1424-13-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/1424-10-0x0000000000400000-0x0000000000414000-memory.dmp

      Filesize

      80KB

    • memory/2312-33-0x0000000005DB0000-0x0000000005DFC000-memory.dmp

      Filesize

      304KB

    • memory/2312-48-0x0000000007080000-0x000000000709A000-memory.dmp

      Filesize

      104KB

    • memory/2312-58-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-15-0x0000000002440000-0x0000000002476000-memory.dmp

      Filesize

      216KB

    • memory/2312-16-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-17-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/2312-18-0x0000000004E30000-0x0000000005458000-memory.dmp

      Filesize

      6.2MB

    • memory/2312-19-0x00000000054C0000-0x00000000054E2000-memory.dmp

      Filesize

      136KB

    • memory/2312-23-0x0000000005700000-0x0000000005766000-memory.dmp

      Filesize

      408KB

    • memory/2312-55-0x00000000073A0000-0x00000000073A8000-memory.dmp

      Filesize

      32KB

    • memory/2312-20-0x0000000005560000-0x00000000055C6000-memory.dmp

      Filesize

      408KB

    • memory/2312-31-0x0000000005770000-0x0000000005AC4000-memory.dmp

      Filesize

      3.3MB

    • memory/2312-32-0x0000000005D80000-0x0000000005D9E000-memory.dmp

      Filesize

      120KB

    • memory/2312-54-0x00000000073C0000-0x00000000073DA000-memory.dmp

      Filesize

      104KB

    • memory/2312-34-0x0000000006D40000-0x0000000006D72000-memory.dmp

      Filesize

      200KB

    • memory/2312-35-0x0000000071030000-0x000000007107C000-memory.dmp

      Filesize

      304KB

    • memory/2312-45-0x0000000006340000-0x000000000635E000-memory.dmp

      Filesize

      120KB

    • memory/2312-46-0x0000000006F80000-0x0000000007023000-memory.dmp

      Filesize

      652KB

    • memory/2312-47-0x00000000076D0000-0x0000000007D4A000-memory.dmp

      Filesize

      6.5MB

    • memory/2312-53-0x00000000072C0000-0x00000000072D4000-memory.dmp

      Filesize

      80KB

    • memory/2312-49-0x0000000007100000-0x000000000710A000-memory.dmp

      Filesize

      40KB

    • memory/2312-50-0x0000000007300000-0x0000000007396000-memory.dmp

      Filesize

      600KB

    • memory/2312-51-0x0000000007280000-0x0000000007291000-memory.dmp

      Filesize

      68KB

    • memory/2312-52-0x00000000072B0000-0x00000000072BE000-memory.dmp

      Filesize

      56KB

    • memory/3328-112-0x0000000071030000-0x000000007107C000-memory.dmp

      Filesize

      304KB

    • memory/4436-4-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/4436-8-0x0000000007980000-0x00000000079D6000-memory.dmp

      Filesize

      344KB

    • memory/4436-14-0x0000000074DC0000-0x0000000075570000-memory.dmp

      Filesize

      7.7MB

    • memory/4436-7-0x00000000050D0000-0x00000000050E0000-memory.dmp

      Filesize

      64KB

    • memory/4436-6-0x00000000050B0000-0x00000000050C8000-memory.dmp

      Filesize

      96KB

    • memory/4436-5-0x0000000004D60000-0x0000000004D6A000-memory.dmp

      Filesize

      40KB

    • memory/4436-9-0x000000000A0D0000-0x000000000A16C000-memory.dmp

      Filesize

      624KB

    • memory/4436-0-0x0000000074DCE000-0x0000000074DCF000-memory.dmp

      Filesize

      4KB

    • memory/4436-3-0x0000000004DD0000-0x0000000004E62000-memory.dmp

      Filesize

      584KB

    • memory/4436-2-0x00000000052E0000-0x0000000005884000-memory.dmp

      Filesize

      5.6MB

    • memory/4436-1-0x00000000002E0000-0x0000000000364000-memory.dmp

      Filesize

      528KB

    • memory/4524-70-0x0000000071030000-0x000000007107C000-memory.dmp

      Filesize

      304KB

    • memory/4992-91-0x0000000071030000-0x000000007107C000-memory.dmp

      Filesize

      304KB