Analysis

  • max time kernel
    32s
  • max time network
    32s
  • 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 03:54

General

  • Target

    sigmasoft-0.1xw.exe

  • Size

    80KB

  • MD5

    7aba935fb8e2e973e2e15b98cda42058

  • SHA1

    5c227e7f053a883394d6162f9183c3343532a302

  • SHA256

    d1adc072119b02981f1581427259693b0e14db39e06e27daa2059259a97857d4

  • SHA512

    fd566bc99920c03a86d8a7b1b85d29ef23e48bcf686d5259d957d0921fac5de2b17c21341d77859616efde4b621037282c34f3fb3f5099337b01c17e6b8378bf

  • SSDEEP

    1536:4HZle0b+wFYoZrXbcAc8T+b6l+URVthEmrk6PocZgnWQ6OjK5PQUZ:Yg0b+wHRrcAT+boPd7OnWQ6O+20

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:42772

gorodpro-42772.portmap.host:42772

Attributes
  • Install_directory

    %ProgramData%

  • install_file

    svchost.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
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.exe
    "C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4332
    • 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\sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4152
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sigmasoft-0.1xw.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2700
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3484
    • 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:4140
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:2612
  • 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=3148,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4404 /prefetch:8
    1⤵
      PID:3548

    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

      75d224e238a397659d8e5cf458a41143

      SHA1

      d182d16283d3d864a2e328b677551428c29ad6df

      SHA256

      6a98fa5e6c5b77722f2bd8c855fd14d6bf545fc35b292252d1dc136b89ed2fee

      SHA512

      3477f3b4182ffdccc817de4242c8fcba706c193a0de5170cd023f8df3d330487d7e372556524b5a0fe1df56de40923700f3f8368eadf6601970e347cbcf078cc

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

      Filesize

      944B

      MD5

      50d3033f2bc3a3774c469d03e71a79a9

      SHA1

      22027b1d52085de99b3bffa276530fea5d961471

      SHA256

      2987e99ec7fa17bd4ab7de3cb4dc62645e1052012a5a357904d6fc6db9054147

      SHA512

      ecf7ab1a9e4192454a3e24c60453fd702a8c648e00078fc933b9182f4a3d3c10c6f5da622a5729b35727e6ddc8837029caddcaf76f56e805b9744253b56da5d8

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o0dyiny5.5ic.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/4152-13-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB

    • memory/4152-14-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB

    • memory/4152-17-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB

    • memory/4152-12-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB

    • memory/4152-4-0x000001F04C530000-0x000001F04C552000-memory.dmp

      Filesize

      136KB

    • memory/4332-0-0x00007FFBF8273000-0x00007FFBF8275000-memory.dmp

      Filesize

      8KB

    • memory/4332-1-0x00000000003C0000-0x00000000003DA000-memory.dmp

      Filesize

      104KB

    • memory/4332-56-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB

    • memory/4332-57-0x00007FFBF8273000-0x00007FFBF8275000-memory.dmp

      Filesize

      8KB

    • memory/4332-58-0x00007FFBF8270000-0x00007FFBF8D31000-memory.dmp

      Filesize

      10.8MB