Analysis

  • max time kernel
    18s
  • max time network
    16s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-09-2024 17:56

General

  • Target

    upx.exe

  • Size

    232KB

  • MD5

    4f64d4d9289bdfcf55fe7a4de0e07f27

  • SHA1

    9981fb1876461216a376558f41fa67ba4bc64aba

  • SHA256

    8b8e99eb8ab351e0c1d45aac62784d4e941eb4816ec00736704c564c670555da

  • SHA512

    78a60559439a7b0d16fcb926c8ba16531cbaf34fdc47f0abdc236921e6f196fe829118cd8ee252c3699486a849a5ffcb2744f3ef802ed8f39369388f1b9c326b

  • SSDEEP

    6144:9loZM+rIkd8g+EtXHkv/iD43jn0BPUon4WvRsY90vb8e1mnxFi:foZtL+EP83jn0BPUon4WvRsY9uYm

Malware Config

Signatures

  • Detect Umbral payload 1 IoCs
  • Umbral

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

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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 2 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.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 38 IoCs
  • Suspicious use of SendNotifyMessage 38 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\upx.exe
    "C:\Users\Admin\AppData\Local\Temp\upx.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2052
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3276
    • C:\Windows\SYSTEM32\attrib.exe
      "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\upx.exe"
      2⤵
      • Views/modifies file attributes
      PID:348
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\upx.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4592
    • 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:4584
    • 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:4572
    • 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:936
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4996
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
        PID:5016
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        2⤵
          PID:5116
        • 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:3240
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic" path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:4884
        • C:\Windows\SYSTEM32\cmd.exe
          "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\upx.exe" && pause
          2⤵
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:2984
          • C:\Windows\system32\PING.EXE
            ping localhost
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:3448
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Checks SCSI registry key(s)
        • Checks processor information in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4628

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      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

        8bbd6908e148d61010a3130cb6aae4a0

        SHA1

        e74bcc1b0f762fcd7469d0621b9c7fe50b0c365d

        SHA256

        79c8ed7085737723dbc7c40b32d01ea400171787259b7458561cd5db60401023

        SHA512

        38057edb5f2ce86329f558bf34224c6110443635756b1b26da99f89b13e3f971bf602939f40d3fce8459cfdab4ad4fa4928ecb933ff045173535fcc46fe4855f

      • 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

        ac057a92f4b62d8880169af0693ef5b2

        SHA1

        66e7c7834c5dae5cec863ccd69403150d05841f4

        SHA256

        7cef55990e8e6cfe07e1965b303e79ac562cdc128ab82edf480d9873f72bb3ed

        SHA512

        d525f47da9e61fc87e55aca6b34e776be3ed081b719bbbb5256705a6afe5fdd4c16d5ee595af13994e2718f789f5fd32830331347d97b029c031c9dfe30c7f49

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_aygpiy0n.pjj.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/2052-103-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/2052-0-0x00007FFE6B873000-0x00007FFE6B875000-memory.dmp

        Filesize

        8KB

      • memory/2052-71-0x0000029C9E3B0000-0x0000029C9E3BA000-memory.dmp

        Filesize

        40KB

      • memory/2052-72-0x0000029C9E810000-0x0000029C9E822000-memory.dmp

        Filesize

        72KB

      • memory/2052-2-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/2052-33-0x0000029C9E690000-0x0000029C9E706000-memory.dmp

        Filesize

        472KB

      • memory/2052-34-0x0000029C9E3E0000-0x0000029C9E430000-memory.dmp

        Filesize

        320KB

      • memory/2052-35-0x0000029C9E390000-0x0000029C9E3AE000-memory.dmp

        Filesize

        120KB

      • memory/2052-1-0x0000029C83F10000-0x0000029C83F50000-memory.dmp

        Filesize

        256KB

      • memory/4592-15-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/4592-18-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/4592-14-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/4592-4-0x000001F96A240000-0x000001F96A262000-memory.dmp

        Filesize

        136KB

      • memory/4592-3-0x00007FFE6B870000-0x00007FFE6C331000-memory.dmp

        Filesize

        10.8MB

      • memory/4628-99-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-87-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-88-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-98-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-97-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-96-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-95-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-94-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-93-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB

      • memory/4628-89-0x000001A9FBB10000-0x000001A9FBB11000-memory.dmp

        Filesize

        4KB