Analysis

  • max time kernel
    135s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-05-2024 13:11

General

  • Target

    App.exe

  • Size

    67KB

  • MD5

    cb1c5bb7bd380ecc93def446f7e43532

  • SHA1

    efb531a3323b3c9cb20b8a8869797cad97bfc58b

  • SHA256

    cdbea5c86b512c61b703948392cd3f2c94c58758d85ad40a63ff38705352b69b

  • SHA512

    8c156f24c1069039b1d183a948abbb2ebea28310cdce60efe5c9f4a2ac693a809cd9c7d67b0fdd67401e8c0960f4b35610f5665a4a2620947fbe3c424f7df2d6

  • SSDEEP

    1536:KZdpHPYaAnbFOEgVEMC5bjmheewVbc1A0lY1rDj6kisHFBOAf7jFj:KN4bgDEMybjmoewVbqg1rOslBO47jFj

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/Jt9Xgc6v

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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\App.exe
    "C:\Users\Admin\AppData\Local\Temp\App.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3444
    • 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\Local\Temp\App.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3056
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'App.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:376
    • 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\svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:684
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2672
  • 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=4252,i,16710585221322798697,8586257254049248207,262144 --variations-seed-version --mojo-platform-channel-handle=4432 /prefetch:8
    1⤵
      PID:4620

    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

      2979eabc783eaca50de7be23dd4eafcf

      SHA1

      d709ce5f3a06b7958a67e20870bfd95b83cad2ea

      SHA256

      006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

      SHA512

      92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

      Filesize

      944B

      MD5

      9c740b7699e2363ac4ecdf496520ca35

      SHA1

      aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9

      SHA256

      be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61

      SHA512

      8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

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

      Filesize

      944B

      MD5

      34f595487e6bfd1d11c7de88ee50356a

      SHA1

      4caad088c15766cc0fa1f42009260e9a02f953bb

      SHA256

      0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

      SHA512

      10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kmnxvuvp.hua.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/3056-4-0x00000146D0640000-0x00000146D0662000-memory.dmp

      Filesize

      136KB

    • memory/3056-6-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3056-5-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3056-18-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3056-3-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3444-0-0x00007FFDA3233000-0x00007FFDA3235000-memory.dmp

      Filesize

      8KB

    • memory/3444-2-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3444-1-0x0000000000B20000-0x0000000000B38000-memory.dmp

      Filesize

      96KB

    • memory/3444-57-0x00007FFDA3233000-0x00007FFDA3235000-memory.dmp

      Filesize

      8KB

    • memory/3444-58-0x00007FFDA3230000-0x00007FFDA3CF1000-memory.dmp

      Filesize

      10.8MB

    • memory/3444-59-0x000000001DA60000-0x000000001DA6C000-memory.dmp

      Filesize

      48KB