Analysis

  • max time kernel
    65s
  • max time network
    69s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241023-en
  • resource tags

    arch:x64arch:x86image:win11-20241023-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04-02-2025 11:58

General

  • Target

    DarkStreamtool.exe

  • Size

    4.1MB

  • MD5

    6d9183425590b05efc503b0d0e780f49

  • SHA1

    e3ac46bf52e48cf98988bc908a3a3de431f735a4

  • SHA256

    8fa822e17a1199c462d0c7c417f86771e2049934bb469f15cfa464168d2734c8

  • SHA512

    7fdbe76f8b502197972255cefd1acd5870052f7a2c2e2b4fdefe62cfd8d7870a93b2e24ff77f113bfe4f7c604ff8df7e54228091ff82cd8128886492365f701c

  • SSDEEP

    49152:DBFc8ar83KZDGR8+IMJupLUFFFFFA9MQ195PS096hbHITCOPyWtjXQStUCV4S3I:DBCzDCR8dKFFFFF5IS096ZlGtSYIQJ

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:38692

search-varies.gl.at.ply.gg:38692

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

Extracted

Family

quasar

Version

1.4.1

Botnet

System Use

C2

search-varies.gl.at.ply.gg:4782

Mutex

b190c4c7-b07b-4e91-b02a-b4c0db119749

Attributes
  • encryption_key

    7EFB9B56C32456D72E73A7558DE372F4393A10ED

  • install_name

    Client.exe

  • log_directory

    Discord

  • reconnect_delay

    3000

  • startup_key

    Discord

  • subdirectory

    SubDir

Signatures

  • Detect Xworm Payload 2 IoCs
  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

    Using powershell.exe command.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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.

  • Drops file in System32 directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 47 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 31 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\DarkStreamtool.exe
    "C:\Users\Admin\AppData\Local\Temp\DarkStreamtool.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2784
    • C:\Users\Admin\AppData\Roaming\Client-built.exe
      "C:\Users\Admin\AppData\Roaming\Client-built.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:276
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Discord" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1400
      • C:\Windows\system32\SubDir\Client.exe
        "C:\Windows\system32\SubDir\Client.exe"
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3508
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks" /create /tn "Discord" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4320
    • C:\Users\Admin\AppData\Roaming\DarkStream rat.exe
      "C:\Users\Admin\AppData\Roaming\DarkStream rat.exe"
      2⤵
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1636
      • 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\DarkStream rat.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3660
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'DarkStream rat.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:5000
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\System User'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1484
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System User'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3532
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\System User"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1072
    • C:\Users\Admin\AppData\Roaming\DarkStream.exe
      "C:\Users\Admin\AppData\Roaming\DarkStream.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\system32\cmd.exe
        "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\BFB6.tmp\BFB7.tmp\BFB8.bat C:\Users\Admin\AppData\Roaming\DarkStream.exe"
        3⤵
          PID:1968
      • C:\Users\Admin\AppData\Roaming\SilverClient1.exe
        "C:\Users\Admin\AppData\Roaming\SilverClient1.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2388
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4068
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /sc daily /tn "_Task-DAILY-21PM" /TR "%MyFile%" /ST 21:00
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3756
    • C:\Users\Admin\System User
      "C:\Users\Admin\System User"
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3412

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      2KB

      MD5

      627073ee3ca9676911bee35548eff2b8

      SHA1

      4c4b68c65e2cab9864b51167d710aa29ebdcff2e

      SHA256

      85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

      SHA512

      3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

      Filesize

      944B

      MD5

      3fca72bce0a730023d4632708575f791

      SHA1

      2e61ed866852bde74593b6fc435cf50ac277c045

      SHA256

      c3d6f5f1c6a7b910fba87e5298c97d2541dcf36b2e0df334cbd084afde040ae8

      SHA512

      3c62214fa7260fc85d1cd231db1266f12a569b4c393c0af0ce1b27f5b2acc9c5497a171348d64d68af0e2f87ac86a52b7f982842e3b3d2c89b9ff9ef791708e4

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

      Filesize

      944B

      MD5

      cef328ddb1ee8916e7a658919323edd8

      SHA1

      a676234d426917535e174f85eabe4ef8b88256a5

      SHA256

      a1b5b7ada8ebc910f20f91ada3991d3321104e9da598c958b1edac9f9aca0e90

      SHA512

      747400c20ca5b5fd1b54bc24e75e6a78f15af61df263be932d2ee7b2f34731c2de8ce03b2706954fb098c1ac36f0b761cf37e418738fa91f2a8ea78572f545cb

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

      Filesize

      944B

      MD5

      1a9fa92a4f2e2ec9e244d43a6a4f8fb9

      SHA1

      9910190edfaccece1dfcc1d92e357772f5dae8f7

      SHA256

      0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

      SHA512

      5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

      Filesize

      944B

      MD5

      d0363bfd5c9ae6af61f6a2fce9a024da

      SHA1

      d38f31fb85c98277a7d67017b8647740fb7a748c

      SHA256

      0f4e0256706ef753da64d5a47101c53ccaee4a25d59019d228ef4461edf66d83

      SHA512

      9c4d9ddc2d044ab704df826abf7d3842dcf7b49673a2644b9018a5ab215e3f41c5d964dfdb9b77e7545f643745bcad270baf781922ddd6ebe7253db71b3d2ca0

    • C:\Users\Admin\AppData\Local\Temp\BFB6.tmp\BFB7.tmp\BFB8.bat

      Filesize

      3KB

      MD5

      d9c237dadc0e155944d2b84dff601e0a

      SHA1

      3ccb2f199e177a0b4604141a238225c6480be5ff

      SHA256

      11b56089d5a7ecef6f269cf35e0d16d5d8a617d5950dbaca1d1a6961e9bcb1ab

      SHA512

      bbe9d2c2a081be2facf147510fa076b54a8b98d7bb5268dad4d92b5b76aa385574fea6545ea729b00b0dda83af3115471272fb25784eefaac66341ee8b21aed6

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ladexjfc.uic.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\Client-built.exe

      Filesize

      3.1MB

      MD5

      3fe1ee7622b3c2a1963b19492be48f94

      SHA1

      2bd82d9bc775e51812d8b79dd50dfacf27cc8fbe

      SHA256

      6e0d421546daee69c012b490df597fa44f12e3f231de7d47d2cc63fb58caf222

      SHA512

      dfbf124a4bffe65f3ae3caae2cdd9ce8b1968f0b07181b3053ee3cb46a90348a7d7f7b9a98012483485f71c523fc1076c28cdd42c9db4f96fce61114505f70be

    • C:\Users\Admin\AppData\Roaming\DarkStream rat.exe

      Filesize

      336KB

      MD5

      0af66d0aceba9b0bd6c9afa1db47f3ea

      SHA1

      7332728e637c0d3eb37337b853a5f7bb15269f1f

      SHA256

      406e38f3a4ecb5c65c553c5cb9d50d801d23a054cc85a92fc02e9ee91423fae1

      SHA512

      d87bd47bd178e655f69b15389410cced6560d8623dbb2463a7b161c0a6ea22386257f05d60fc40c0862ab6c29bfa5030272353bcfb8957ffc89d9022b7b65029

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

      Filesize

      356KB

      MD5

      2842a6174f32275bb7f0d60424eceedc

      SHA1

      1aa05132bf6bd5235aa59520d3b78f0710b44031

      SHA256

      d2fe7f3dacce7205dd6a3b951bf9d215c9175540e7ec6ef460d0767893ddcb8f

      SHA512

      e79d553b9f29e6d3745adc712c73d6ed587ff4d7f80d55b0422f6127999d6a298dccb7d4d543b31645d433e7945950c472eaeb386577e402b733cc1f7393a023

    • C:\Users\Admin\AppData\Roaming\SilverClient1.exe

      Filesize

      35KB

      MD5

      d5fed599d7b568f20b8e81e1f4246366

      SHA1

      a6e80d11f33ccda19984a793a97f99e79124d4bf

      SHA256

      4b2ee2022a19530f6e4db15f866c5e5f713f254e578edd4cee0c5c1fe2c05a2e

      SHA512

      88d3d560c79799ae163b8bfee461b8ccba703035cf8e7ee06d004e3836afa4c5c1d44888929ebb16d0e05799a5fff8d9a741cdc25d94a3e907a76a0705186663

    • memory/276-66-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

      Filesize

      10.8MB

    • memory/276-44-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

      Filesize

      10.8MB

    • memory/276-42-0x0000000000A10000-0x0000000000D34000-memory.dmp

      Filesize

      3.1MB

    • memory/1636-47-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

      Filesize

      10.8MB

    • memory/1636-115-0x00007FFF7EC70000-0x00007FFF7F732000-memory.dmp

      Filesize

      10.8MB

    • memory/1636-30-0x00000000009D0000-0x0000000000A2A000-memory.dmp

      Filesize

      360KB

    • memory/2388-46-0x0000000000170000-0x000000000017E000-memory.dmp

      Filesize

      56KB

    • memory/2784-0-0x00007FFF7EC73000-0x00007FFF7EC75000-memory.dmp

      Filesize

      8KB

    • memory/2784-1-0x0000000000B60000-0x0000000000F80000-memory.dmp

      Filesize

      4.1MB

    • memory/3508-69-0x000000001C310000-0x000000001C360000-memory.dmp

      Filesize

      320KB

    • memory/3508-70-0x000000001C420000-0x000000001C4D2000-memory.dmp

      Filesize

      712KB

    • memory/3508-117-0x000000001CC10000-0x000000001D138000-memory.dmp

      Filesize

      5.2MB

    • memory/4068-56-0x0000013A4FC20000-0x0000013A4FC42000-memory.dmp

      Filesize

      136KB