Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 14:41

General

  • Target

    4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe

  • Size

    560KB

  • MD5

    4a5f7263d5e978024e4d3c7abed82307

  • SHA1

    0a8f9bb8e9058beb4bd67ea08b8ef82bc90fcd8c

  • SHA256

    4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf

  • SHA512

    d843fe704beeb3b61916c789626bc908eed44455a34a86a65994db47c759311aef05c4f2d1530f2f073e99e6bdf3dc2b15944772fee7d161b492e70ba8a09c22

  • SSDEEP

    12288:IzxKn6yWn7fcpVZlu/6uHqa9XnWsh9P5u7JwdprNLUgNYGutA:rn698VVYFlRu7J6ZUgNiA

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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe
    "C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1320
    • C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe
      "C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe"
      2⤵
        PID:3144
      • C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe
        "C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe"
        2⤵
          PID:3264
        • C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe
          "C:\Users\Admin\AppData\Local\Temp\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.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:1804
          • 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\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:4456
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.exe'
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3008
          • 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:3948
          • 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:224
      • 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 --field-trial-handle=4624,i,1999448010053300448,1112699187621658374,262144 --variations-seed-version --mojo-platform-channel-handle=4196 /prefetch:8
        1⤵
          PID:1892

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Execution

        Command and Scripting Interpreter

        1
        T1059

        PowerShell

        1
        T1059.001

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf.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

          3d086a433708053f9bf9523e1d87a4e8

          SHA1

          b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

          SHA256

          6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

          SHA512

          931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

          18KB

          MD5

          8ab2a0fe7622b94160c559f183f5668f

          SHA1

          8e056b477a9ad247abfe2d3d6b2050978a27b941

          SHA256

          34de2d84360ba33708fdd28ff2b3bae35d3babba14ab2ccca4578fc201b2f133

          SHA512

          7b4fc324762eebb6ab46536a27d76ca79e5817aa072edec5759c8c321897662e7d56fc86cfcd90b7e2f67da975bb995b060f876422b28489bfb869c2bda6c161

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

          18KB

          MD5

          5141205da94f8884b96450ef988bb1c5

          SHA1

          b2701fc89a20cd6567fdc55ca87a92967ed3b04f

          SHA256

          2f4f62f11e5e4e274dfec53fddb804cb910c2a9cb240f11091be90c27fb9cd47

          SHA512

          fdada60c6953740b1ec366318be6b16ca9e7b93d333c50114a770c0247be9c3c8f87c69332f718a3b2054a3cfa822c061b4928ad0ee50480a23bbbfa73c19bcc

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

          18KB

          MD5

          8939fe367d6da29bcf3fc4220027c3af

          SHA1

          e7f71c12bbf298fc0ad2ada83ad0ccd8d4da334d

          SHA256

          8ce37decc7bf04249f9266d63434a752c51fd91e872eb8e42a57c0ceaf5c567d

          SHA512

          5808ea9d80d1d6d7e97b5668a0a828790d73f1722df86548db07f18b461de9de964588c7c4de7ef362ff36d10983e34738cbfdc0639223f71faecaad9a29af14

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mlh0cp0c.j2t.ps1
          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/224-113-0x0000000070560000-0x00000000705AC000-memory.dmp
          Filesize

          304KB

        • memory/1320-4-0x0000000005760000-0x000000000576A000-memory.dmp
          Filesize

          40KB

        • memory/1320-8-0x0000000002F30000-0x0000000002F40000-memory.dmp
          Filesize

          64KB

        • memory/1320-9-0x0000000006BC0000-0x0000000006C16000-memory.dmp
          Filesize

          344KB

        • memory/1320-10-0x0000000007E70000-0x0000000007F0C000-memory.dmp
          Filesize

          624KB

        • memory/1320-7-0x0000000005A20000-0x0000000005A2C000-memory.dmp
          Filesize

          48KB

        • memory/1320-6-0x00000000059B0000-0x00000000059D2000-memory.dmp
          Filesize

          136KB

        • memory/1320-1-0x0000000000B30000-0x0000000000BC0000-memory.dmp
          Filesize

          576KB

        • memory/1320-15-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/1320-0-0x0000000074F4E000-0x0000000074F4F000-memory.dmp
          Filesize

          4KB

        • memory/1320-2-0x0000000005BF0000-0x0000000006194000-memory.dmp
          Filesize

          5.6MB

        • memory/1320-3-0x0000000005590000-0x0000000005622000-memory.dmp
          Filesize

          584KB

        • memory/1320-5-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/1804-11-0x0000000000400000-0x0000000000414000-memory.dmp
          Filesize

          80KB

        • memory/1804-128-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/1804-129-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/1804-130-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/1804-14-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/3008-71-0x0000000070560000-0x00000000705AC000-memory.dmp
          Filesize

          304KB

        • memory/3948-92-0x0000000070560000-0x00000000705AC000-memory.dmp
          Filesize

          304KB

        • memory/4456-33-0x0000000005F50000-0x0000000005F6E000-memory.dmp
          Filesize

          120KB

        • memory/4456-36-0x0000000070560000-0x00000000705AC000-memory.dmp
          Filesize

          304KB

        • memory/4456-47-0x0000000006F40000-0x0000000006FE3000-memory.dmp
          Filesize

          652KB

        • memory/4456-46-0x0000000006F20000-0x0000000006F3E000-memory.dmp
          Filesize

          120KB

        • memory/4456-48-0x00000000078C0000-0x0000000007F3A000-memory.dmp
          Filesize

          6.5MB

        • memory/4456-49-0x0000000007280000-0x000000000729A000-memory.dmp
          Filesize

          104KB

        • memory/4456-50-0x00000000072E0000-0x00000000072EA000-memory.dmp
          Filesize

          40KB

        • memory/4456-51-0x0000000007510000-0x00000000075A6000-memory.dmp
          Filesize

          600KB

        • memory/4456-52-0x0000000007480000-0x0000000007491000-memory.dmp
          Filesize

          68KB

        • memory/4456-53-0x00000000074B0000-0x00000000074BE000-memory.dmp
          Filesize

          56KB

        • memory/4456-54-0x00000000074C0000-0x00000000074D4000-memory.dmp
          Filesize

          80KB

        • memory/4456-55-0x00000000075D0000-0x00000000075EA000-memory.dmp
          Filesize

          104KB

        • memory/4456-56-0x0000000007500000-0x0000000007508000-memory.dmp
          Filesize

          32KB

        • memory/4456-59-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/4456-35-0x0000000006520000-0x0000000006552000-memory.dmp
          Filesize

          200KB

        • memory/4456-34-0x0000000006240000-0x000000000628C000-memory.dmp
          Filesize

          304KB

        • memory/4456-32-0x0000000005B70000-0x0000000005EC4000-memory.dmp
          Filesize

          3.3MB

        • memory/4456-27-0x00000000058F0000-0x0000000005956000-memory.dmp
          Filesize

          408KB

        • memory/4456-21-0x0000000005880000-0x00000000058E6000-memory.dmp
          Filesize

          408KB

        • memory/4456-20-0x00000000050A0000-0x00000000050C2000-memory.dmp
          Filesize

          136KB

        • memory/4456-19-0x00000000050E0000-0x0000000005708000-memory.dmp
          Filesize

          6.2MB

        • memory/4456-18-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/4456-17-0x0000000074F40000-0x00000000756F0000-memory.dmp
          Filesize

          7.7MB

        • memory/4456-16-0x0000000002650000-0x0000000002686000-memory.dmp
          Filesize

          216KB