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Analysis

  • max time kernel
    13s
  • max time network
    15s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    08/01/2025, 23:08

General

  • Target

    2.exe

  • Size

    228KB

  • MD5

    22c66a144f89f219d9f7bef81578dd48

  • SHA1

    ad7235aadd9583fd423a5f36a5c65a6213d23fff

  • SHA256

    9c1f1a7105e258fc4b5df94ba02bd41ddbe55bc82c88cd718fa5b2fac5969f00

  • SHA512

    78316d05a92f3c4d9be0f18d1bbc86529961917d83cb00de36a396e96b2357564e354e9cfdc364f08d7e96bdd8602296e6df6eb0d2ea21029c7a45e116edb7a0

  • SSDEEP

    6144:uloZMmrIkd8g+EtXHkv/iD4k5MTaL7j8e1myi:4oZ1L+EP8+LPW

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.

  • Detects videocard installed 1 TTPs 1 IoCs

    Uses WMIC.exe to determine videocard installed.

  • Suspicious behavior: EnumeratesProcesses 31 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2.exe
    "C:\Users\Admin\AppData\Local\Temp\2.exe"
    1⤵
    • Drops file in Drivers directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:396
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:32
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\2.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4800
    • 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
      PID:4864
    • 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
      PID:1872
    • 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
      PID:752
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:2564
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3780
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:3684
    • 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:3620
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      2⤵
      • Detects videocard installed
      • Suspicious behavior: EnumeratesProcesses
      PID:4760

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

    3KB

    MD5

    3eb3833f769dd890afc295b977eab4b4

    SHA1

    e857649b037939602c72ad003e5d3698695f436f

    SHA256

    c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

    SHA512

    c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

    Filesize

    1KB

    MD5

    60b3262c3163ee3d466199160b9ed07d

    SHA1

    994ece4ea4e61de0be2fdd580f87e3415f9e1ff6

    SHA256

    e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb

    SHA512

    081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af

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

    Filesize

    948B

    MD5

    c14d98cc8b2f9eacc1a1b704a0007f5b

    SHA1

    29f742fddb1bb3354fe09be677627947ed852fec

    SHA256

    3e45b1d3376ee79767c98c41d9c6a5b8172aa1f4856ad94910af7dd15e016d9b

    SHA512

    f0c63aa31173b2c0dd4f5dec590acab558597ed93593115c0582e31cb1fbb5ee8cf042e7f147125dfa32e96f20f54762ec6a64fe811682033df2d38e38ee671e

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

    Filesize

    1KB

    MD5

    8e1fdd1b66d2fee9f6a052524d4ddca5

    SHA1

    0a9d0994559d1be2eecd8b0d6960540ca627bdb6

    SHA256

    4cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13

    SHA512

    5a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3

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

    Filesize

    1KB

    MD5

    71942225419386ac509d153f679d4a68

    SHA1

    b2e1b1cba65e2a0b1b231a5a8b085e5b5294bbb3

    SHA256

    bc4f5ba67c4a53622f5618f2998a6c5c422daeea4a697f393d2a6667c4ab878b

    SHA512

    4195908338bee9870b0bbf29351b218a6e73da4d86073e148e128a0fa0269698ff1af0e1c4bc6b9ac3d2b2c4da23ead5acc6d0eb5c26a6095bf31b4491042912

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kybvjh4t.u2l.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/396-58-0x000001F2DF3C0000-0x000001F2DF3CA000-memory.dmp

    Filesize

    40KB

  • memory/396-34-0x000001F2DF3A0000-0x000001F2DF3BE000-memory.dmp

    Filesize

    120KB

  • memory/396-77-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB

  • memory/396-59-0x000001F2DF4D0000-0x000001F2DF4E2000-memory.dmp

    Filesize

    72KB

  • memory/396-2-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB

  • memory/396-32-0x000001F2DF400000-0x000001F2DF476000-memory.dmp

    Filesize

    472KB

  • memory/396-33-0x000001F2DF480000-0x000001F2DF4D0000-memory.dmp

    Filesize

    320KB

  • memory/396-0-0x00007FF901903000-0x00007FF901905000-memory.dmp

    Filesize

    8KB

  • memory/396-1-0x000001F2C4CE0000-0x000001F2C4D20000-memory.dmp

    Filesize

    256KB

  • memory/4800-11-0x000002941DA40000-0x000002941DA62000-memory.dmp

    Filesize

    136KB

  • memory/4800-4-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4800-3-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4800-5-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB

  • memory/4800-18-0x00007FF901900000-0x00007FF9023C2000-memory.dmp

    Filesize

    10.8MB