Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/05/2025, 11:09

General

  • Target

    250502-m7emgssrs4.exe

  • Size

    94KB

  • MD5

    9703ca1aa7b76a5cbcbc44f1e88ab0da

  • SHA1

    527a3bea16ca6cbd11daafa04478274878660d3f

  • SHA256

    beb15b54dc5b31d30e4a950db36dcc33b8fe1f29c6567c5cf9ca93bee7c17fce

  • SHA512

    0d8add3c5c56e9a56112f7283aee201d77d0336963dca561cc7ff041f970da410c21d2d099c4e30bded52da85093f37e681bf3d57f461c32208bd92277763e20

  • SSDEEP

    1536:00A1Vii3CCFVAmJOvSHyz0oiWuGTf+b6HPKmQ76xK+OMFS9hBKUEF:07XNHSz0ow8f+b6XHK+OMsOl

Malware Config

Extracted

Family

xworm

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/2Q991bze

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Detect Xworm Payload 2 IoCs
  • StormKitty

    StormKitty is an open source info stealer written in C#.

  • StormKitty payload 1 IoCs
  • Stormkitty family
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 3 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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\250502-m7emgssrs4.exe
    "C:\Users\Admin\AppData\Local\Temp\250502-m7emgssrs4.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3200
    • 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\Local\Temp\250502-m7emgssrs4.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4792
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '250502-m7emgssrs4.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3360
    • 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'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5596
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1876
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:1912
  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3116
    • C:\Users\Admin\AppData\Roaming\svchost.exe
      C:\Users\Admin\AppData\Roaming\svchost.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:3744
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2924
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3544

Network

        MITRE ATT&CK Enterprise v16

        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\CLR_v4.0\UsageLogs\svchost.exe.log

          Filesize

          654B

          MD5

          2ff39f6c7249774be85fd60a8f9a245e

          SHA1

          684ff36b31aedc1e587c8496c02722c6698c1c4e

          SHA256

          e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

          SHA512

          1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

          Filesize

          944B

          MD5

          4f3a771041a5f0acbc6074eaa3e256fa

          SHA1

          fdf40d5cd659f3708d88442c5140c1f463b3cb9c

          SHA256

          cb5d3000eae0d7837ed7076c75dbd0eb445858a5861946fc960aa43fef5af17e

          SHA512

          2f22c66a620e8939f19bbfcab94a228084c7c54eeaacd6c1bc0f8ce05ca2bc57f0ab886543faeb36fca6a4b347285fd5d1eb1d2ad128d999be8865a5cff04d73

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

          Filesize

          944B

          MD5

          22310ad6749d8cc38284aa616efcd100

          SHA1

          440ef4a0a53bfa7c83fe84326a1dff4326dcb515

          SHA256

          55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

          SHA512

          2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

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

          Filesize

          944B

          MD5

          ba169f4dcbbf147fe78ef0061a95e83b

          SHA1

          92a571a6eef49fff666e0f62a3545bcd1cdcda67

          SHA256

          5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

          SHA512

          8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ek2zqgkz.4gh.ps1

          Filesize

          60B

          MD5

          d17fe0a3f47be24a6453e9ef58c94641

          SHA1

          6ab83620379fc69f80c0242105ddffd7d98d5d9d

          SHA256

          96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

          SHA512

          5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

        • C:\Users\Admin\AppData\Roaming\svchost.exe

          Filesize

          94KB

          MD5

          9703ca1aa7b76a5cbcbc44f1e88ab0da

          SHA1

          527a3bea16ca6cbd11daafa04478274878660d3f

          SHA256

          beb15b54dc5b31d30e4a950db36dcc33b8fe1f29c6567c5cf9ca93bee7c17fce

          SHA512

          0d8add3c5c56e9a56112f7283aee201d77d0336963dca561cc7ff041f970da410c21d2d099c4e30bded52da85093f37e681bf3d57f461c32208bd92277763e20

        • memory/3200-100-0x000000001D7A0000-0x000000001DAF0000-memory.dmp

          Filesize

          3.3MB

        • memory/3200-103-0x0000000001440000-0x000000000144E000-memory.dmp

          Filesize

          56KB

        • memory/3200-117-0x000000001EAC0000-0x000000001EB4E000-memory.dmp

          Filesize

          568KB

        • memory/3200-115-0x000000001BE40000-0x000000001BE4C000-memory.dmp

          Filesize

          48KB

        • memory/3200-113-0x000000001CC60000-0x000000001CC6C000-memory.dmp

          Filesize

          48KB

        • memory/3200-1-0x0000000000B10000-0x0000000000B2C000-memory.dmp

          Filesize

          112KB

        • memory/3200-57-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/3200-0-0x00007FF8E9313000-0x00007FF8E9315000-memory.dmp

          Filesize

          8KB

        • memory/3200-61-0x00007FF8E9313000-0x00007FF8E9315000-memory.dmp

          Filesize

          8KB

        • memory/3200-63-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/3200-64-0x000000001D310000-0x000000001D430000-memory.dmp

          Filesize

          1.1MB

        • memory/4792-7-0x0000017FAC9B0000-0x0000017FAC9D2000-memory.dmp

          Filesize

          136KB

        • memory/4792-12-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-18-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-13-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-14-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB

        • memory/4792-17-0x00007FF8E9310000-0x00007FF8E9DD1000-memory.dmp

          Filesize

          10.8MB