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Analysis

  • max time kernel
    115s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/01/2025, 14:51

General

  • Target

    SamsungCommisionExternal.exe

  • Size

    63KB

  • MD5

    6f30a565049364df3068b5bc88fd36d6

  • SHA1

    2ca485eb96156bfc561acd69649cf3339da6c610

  • SHA256

    e65d7f5beb1f383e07917e867fb3b18a59a597319d152ad148b37a8924b8780d

  • SHA512

    c01edc2fe4e5ad26b9511cc0bc114221878cf961b436a091a79611ce27da69ce7cf58afdcc71d295ad25f08701b1eb16c0c298fd22fbcb69004f760ea2b89ffe

  • SSDEEP

    1536:9VbfG3pj8mIfpubPOggHEyj26+6POhjV5yD/9:/fGZrIf0bPDgkyjnPOhp5U9

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:24707

modified-begun.gl.at.ply.gg:24707

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 1 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 1 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SamsungCommisionExternal.exe
    "C:\Users\Admin\AppData\Local\Temp\SamsungCommisionExternal.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:3652
    • 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\SamsungCommisionExternal.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2392
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SamsungCommisionExternal.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4784
    • 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\Smasmug'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4552
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Smasmug'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4316

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

    9078a011b49db705765cff4b845368b0

    SHA1

    533576940a2780b894e1ae46b17d2f4224051b77

    SHA256

    c89240e395a581db1b44d204e2bcbd5b0e7f636ac72585d8257e6b901f5a3615

    SHA512

    48e0896fc4818bb7e3f250c5cad70d5e4ce71d3f6a8d2d17d8becc36050c1de2a270fde8dea5bb3462f1e7f5eaf074053390934f26d0186113215a1c4e92dd1e

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

    Filesize

    944B

    MD5

    6d14ccefeb263594e60b1765e131f7a3

    SHA1

    4a9ebdc0dff58645406c40b7b140e1b174756721

    SHA256

    57cd435c8b2bf10a2c77698301789c032e1b6b623ff1420c72e8bca0b10f1e5c

    SHA512

    2013a26123f72a4106524fd9d7389ac4654f97033d22707efc084fb2a3ad01c298eb64f01bb64861ab603615022dbe7cfc97475346edb16b3ba72e905127f101

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0lnk5dcx.cy0.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2392-3-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-14-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-15-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-18-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB

  • memory/2392-13-0x0000018E6AB20000-0x0000018E6AB42000-memory.dmp

    Filesize

    136KB

  • memory/3652-0-0x00007FFD41BF3000-0x00007FFD41BF5000-memory.dmp

    Filesize

    8KB

  • memory/3652-2-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3652-1-0x00000000009F0000-0x0000000000A06000-memory.dmp

    Filesize

    88KB

  • memory/3652-53-0x00007FFD41BF3000-0x00007FFD41BF5000-memory.dmp

    Filesize

    8KB

  • memory/3652-57-0x00007FFD41BF0000-0x00007FFD426B1000-memory.dmp

    Filesize

    10.8MB