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Analysis

  • max time kernel
    149s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/09/2024, 01:07

General

  • Target

    c9IDU7463.exe

  • Size

    971KB

  • MD5

    26efc684ddd0782b295a6ee4a76e3256

  • SHA1

    08cc73ef5c1b02e09765181a5acee1a7018dcffc

  • SHA256

    bf832f28b8d9f2ff077f691bd7e8a2cf46f3a4ac0ee8ee2d2f2944089abd20ab

  • SHA512

    20ba9e73514148613943db974cf88874907f9fe19e1cf5d81d9bf83ffbd233be80e925c62a5430a7ef69099e603ae54d60680020e0de58e632897f8c4aecfb49

  • SSDEEP

    24576:5tVd1nnqxDvo1QtHCX1LcsRt0ni/V27INjQL:5tVDnquatHCX1Lcs422kpQL

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 6 IoCs

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

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Drops startup file 2 IoCs
  • Executes dropped EXE 5 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.

  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • 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: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\c9IDU7463.exe
    "C:\Users\Admin\AppData\Local\Temp\c9IDU7463.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\Client Server Runtime Process.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1204
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Client Server Runtime Process.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1996
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCF27.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3056
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2764
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1684
  • C:\Windows\System32\Client Server Runtime Process.exe
    "C:\Windows\System32\Client Server Runtime Process.exe"
    1⤵
    • Checks computer location settings
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4680
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAG4AZwB0ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGkAeABoACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGQAdQBmACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGoAYgBqACMAPgA="
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4432
    • C:\Users\Admin\AppData\Local\Temp\Windows Security.exe
      "C:\Users\Admin\AppData\Local\Temp\Windows Security.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4652
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHYAZQBuACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHEAdQB3ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAGUAegB4ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGMAdQBuACMAPgA="
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2508
      • C:\Users\Admin\AppData\Local\Temp\Windows Security Notification.exe
        "C:\Users\Admin\AppData\Local\Temp\Windows Security Notification.exe"
        3⤵
        • Checks computer location settings
        • Drops startup file
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2716
        • 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\Windows Security Notification.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2836
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Security Notification.exe'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4932
        • 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\malware builder'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4896
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'malware builder'
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1928
        • C:\Windows\System32\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "malware builder" /tr "C:\Users\Admin\AppData\Roaming\malware builder"
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4468
  • C:\Users\Admin\AppData\Roaming\malware builder
    "C:\Users\Admin\AppData\Roaming\malware builder"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2016
  • C:\Users\Admin\AppData\Roaming\malware builder
    "C:\Users\Admin\AppData\Roaming\malware builder"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:1700

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\malware builder.log

    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

  • 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

    a2c8179aaa149c0b9791b73ce44c04d1

    SHA1

    703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

    SHA256

    c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

    SHA512

    2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

    Filesize

    944B

    MD5

    1db603eb97fe7f53cec494c6bda708fa

    SHA1

    62eae65be71e756be720c83d846a0ec6cc4a7da6

    SHA256

    b1381bb40f4d49928f025366439d38f18a0683ee0e100a5fc38ad22639bfdf4c

    SHA512

    13d8cfc5eacc9e7ad5761614472dc7d1d1108be3dd2e1a036ec2d64be35b44480365a040c506bbf5a3b93cfdb3a25a7b9376f6771dd79d0d8eeea8abe98a98b4

  • 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

    944B

    MD5

    eb1ad317bd25b55b2bbdce8a28a74a94

    SHA1

    98a3978be4d10d62e7411946474579ee5bdc5ea6

    SHA256

    9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

    SHA512

    d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

    Filesize

    836B

    MD5

    13b2f0699e4911fe4cb3517be2ad4999

    SHA1

    60dbf6512eade5a8ecea1138411529ceba687db3

    SHA256

    a4d082bd41dad67407f030e3c93aeab8ae8e4dfb8be1aeecc0a2479f0363b26f

    SHA512

    7b2074928e4d41c9ab5525a5d72df77484bdeac711d4cf4e7281a1c108772f19df9e8d95ff70d7fc43e97887550fbd7cd40cef17c6e42ccb15642ad394fce90f

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

    Filesize

    944B

    MD5

    d8cb3e9459807e35f02130fad3f9860d

    SHA1

    5af7f32cb8a30e850892b15e9164030a041f4bd6

    SHA256

    2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

    SHA512

    045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

  • C:\Users\Admin\AppData\Local\Temp\Windows Security Notification.exe

    Filesize

    114KB

    MD5

    d59bcf447ab9a90d1c6e9701d85d5700

    SHA1

    c7eff0f1d56e71a601cff1e161879ea520886a32

    SHA256

    50738407f70e37470182a0da6b44e78eb9cd2be3f7c43e066ea85f92388c79ae

    SHA512

    4a33de1700a6740c354d79b6e2f706dbc924805b6c8aae03d68cf17427e52a58e65a177622266f4d4e9d0d0904d8ab7a55af2576d555bcc5868b9084730e7180

  • C:\Users\Admin\AppData\Local\Temp\Windows Security.exe

    Filesize

    164KB

    MD5

    9efb0ca4f150666bedbc6ef91e0e6f4b

    SHA1

    13b140227e709d3a534d4158111c9256b14474b3

    SHA256

    5ff4fc5985d8d9877dd5b4abe081ee91681b187e99a466b802a8795fd9e500ab

    SHA512

    7e16155776a1431eda8da3b2fe134b52863c0917170dc64ded710c5133705a0c019c930f696d5972a0a63270f59900cfca4b776631c0b5442c62696db4f7ca36

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_kpg5iqsf.0on.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpCF27.tmp.bat

    Filesize

    161B

    MD5

    1cfabdec39a6a3a3a7bc855b37144fe1

    SHA1

    979896a5f8e943f13cb56f818233022a9912c9e0

    SHA256

    fa9ad2519568263100f7b0784a79b8e3e7b69f6140b5b3c84545abeb870ff47f

    SHA512

    aa5eb33b5225ec742997d06c301cd70f063879b153ec99b0f94190c30e93808399d22b7a6787d9d94251039bda6698c89f994143abe2c1351569551d5728eece

  • C:\Windows\System32\Client Server Runtime Process.exe

    Filesize

    971KB

    MD5

    26efc684ddd0782b295a6ee4a76e3256

    SHA1

    08cc73ef5c1b02e09765181a5acee1a7018dcffc

    SHA256

    bf832f28b8d9f2ff077f691bd7e8a2cf46f3a4ac0ee8ee2d2f2944089abd20ab

    SHA512

    20ba9e73514148613943db974cf88874907f9fe19e1cf5d81d9bf83ffbd233be80e925c62a5430a7ef69099e603ae54d60680020e0de58e632897f8c4aecfb49

  • memory/1048-39-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/1048-1-0x0000000000950000-0x0000000000A4A000-memory.dmp

    Filesize

    1000KB

  • memory/1048-2-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/1048-0-0x00007FFCCA6B3000-0x00007FFCCA6B5000-memory.dmp

    Filesize

    8KB

  • memory/1204-3-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/1204-18-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/1204-11-0x0000024876150000-0x0000024876172000-memory.dmp

    Filesize

    136KB

  • memory/1204-5-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/1204-4-0x00007FFCCA6B0000-0x00007FFCCB171000-memory.dmp

    Filesize

    10.8MB

  • memory/2716-75-0x00000000003A0000-0x00000000003C2000-memory.dmp

    Filesize

    136KB

  • memory/4652-53-0x00000000008D0000-0x00000000008FE000-memory.dmp

    Filesize

    184KB

  • memory/4680-41-0x0000000002B90000-0x0000000002BCC000-memory.dmp

    Filesize

    240KB

  • memory/4680-40-0x000000001BA20000-0x000000001BAE8000-memory.dmp

    Filesize

    800KB