Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/11/2024, 03:35

General

  • Target

    4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

  • Size

    562KB

  • MD5

    ff9e45d7326698f34526793bf1244811

  • SHA1

    b3ff69abfe1c5e6633a866ffbebe2139a69e3f0a

  • SHA256

    4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca

  • SHA512

    ed2e02262beb00f77c5d17854c7b6544cdb4edce37e870505e21c0cd08999cb99904a667e5ed31cde3a3437c4e9713e6bfc63f091b30a9cec25a046ad0120657

  • SSDEEP

    12288:FDxrXQ9TZweejcQ1FXQEcupRk6CvPlZ0wJOszYkR:ZQejd1BpcupC6Cb0qL

Malware Config

Extracted

Family

xworm

Version

3.1

C2

kanrplest.duckdns.org:4068

Mutex

TdUxMCK2FUdy51AH

Attributes
  • Install_directory

    %AppData%

  • install_file

    USB.exe

aes.plain

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 5 IoCs

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

  • Checks computer location settings 2 TTPs 2 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
    "C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:508
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\RTUZKYTc.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:532
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RTUZKYTc" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC5D0.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:1968
    • C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe
      "C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3636
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4260
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1604
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4596

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

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

    Filesize

    18KB

    MD5

    f35ad117785421737051d51761782c08

    SHA1

    72ad25c4dbf192cf5c8f2ed93777b5dbd878e5c0

    SHA256

    e252e8d0e281f916529d920b3f3985b5cd4fe641930a5ddf183d873b8c614806

    SHA512

    e13fee0ca372f1bb7021e59656bf4e4f7268f0371d5b5eb7b9f85de739a7951a1d208c3f63567dbf1d47c923ee3b2e0daa4dc5f6abf10402c8ceb64e9301c629

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

    Filesize

    18KB

    MD5

    394e5785f51e1b0361e787fc7ccde938

    SHA1

    0d0921fd30b196e4aff7aa2f563e95e8af39b043

    SHA256

    bd148c8df1b85285018276fd1d361dbdad2f096273a684d16678e77634d946e1

    SHA512

    0baccbcaf0f8dda1f18a29b336eab6b3ffdc36d53bf7a9dd6aba1f2955dabda06099249e3f035488e9a29846034f35373bd5aa9b3cde4766bc4455857991daf1

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

    Filesize

    18KB

    MD5

    0476f3b722594031947685fc9918b3d9

    SHA1

    4f6a17cb2e6a2e18b190f9276898d0c7a168f93b

    SHA256

    001430ce7f6150bfad1196f3b3d987c9146a29a8b10ca243022649ecb375fdba

    SHA512

    19124122721b4328eb55f069f23d640c485cbba27055b2b2c541ad81beadc92af3e3e6e3417b560be8838de410478d1cbd2bc2db9d5e8038b8e72b28795d0830

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4wg1pbcl.xac.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpC5D0.tmp

    Filesize

    1KB

    MD5

    e2c74282c0af874257b34c1461e59072

    SHA1

    4f5f1cfea9be099d3d1c0930dae2c034a18c694c

    SHA256

    fdef7bd7c36ff2ba18a59d3008ea00f43c788489477f7baf815a57a840ffbe6d

    SHA512

    0b3abc79b49e508d83b222eac9d86600e8b0a3528fed0873d4ed4b9ac36cb2abc9f7fbca0aa9dac8b57931d72c2c51ce78935ff192311a1f0baf02df6a0fd0a3

  • C:\Users\Admin\AppData\Roaming\4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca.exe

    Filesize

    562KB

    MD5

    ff9e45d7326698f34526793bf1244811

    SHA1

    b3ff69abfe1c5e6633a866ffbebe2139a69e3f0a

    SHA256

    4db566fcdc413fe50153dc8431ae86192241f0e1e86071f80d42eb6e0fb5baca

    SHA512

    ed2e02262beb00f77c5d17854c7b6544cdb4edce37e870505e21c0cd08999cb99904a667e5ed31cde3a3437c4e9713e6bfc63f091b30a9cec25a046ad0120657

  • memory/508-63-0x00000000061E0000-0x00000000061FE000-memory.dmp

    Filesize

    120KB

  • memory/508-21-0x0000000004C60000-0x0000000004C82000-memory.dmp

    Filesize

    136KB

  • memory/508-84-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/508-78-0x0000000007180000-0x000000000718E000-memory.dmp

    Filesize

    56KB

  • memory/508-15-0x0000000002330000-0x0000000002366000-memory.dmp

    Filesize

    216KB

  • memory/508-17-0x0000000005060000-0x0000000005688000-memory.dmp

    Filesize

    6.2MB

  • memory/508-16-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/508-18-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/508-50-0x0000000006BB0000-0x0000000006BE2000-memory.dmp

    Filesize

    200KB

  • memory/508-23-0x0000000004F70000-0x0000000004FD6000-memory.dmp

    Filesize

    408KB

  • memory/508-24-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/508-51-0x0000000075BD0000-0x0000000075C1C000-memory.dmp

    Filesize

    304KB

  • memory/508-34-0x0000000005690000-0x00000000059E4000-memory.dmp

    Filesize

    3.3MB

  • memory/508-74-0x0000000006F40000-0x0000000006F5A000-memory.dmp

    Filesize

    104KB

  • memory/508-48-0x0000000005C30000-0x0000000005C4E000-memory.dmp

    Filesize

    120KB

  • memory/508-22-0x0000000004E00000-0x0000000004E66000-memory.dmp

    Filesize

    408KB

  • memory/532-73-0x00000000076F0000-0x0000000007D6A000-memory.dmp

    Filesize

    6.5MB

  • memory/532-52-0x0000000075BD0000-0x0000000075C1C000-memory.dmp

    Filesize

    304KB

  • memory/532-76-0x0000000007330000-0x00000000073C6000-memory.dmp

    Filesize

    600KB

  • memory/532-49-0x0000000005DC0000-0x0000000005E0C000-memory.dmp

    Filesize

    304KB

  • memory/532-85-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/532-81-0x00000000073D0000-0x00000000073D8000-memory.dmp

    Filesize

    32KB

  • memory/532-72-0x0000000006F80000-0x0000000007023000-memory.dmp

    Filesize

    652KB

  • memory/532-77-0x00000000072B0000-0x00000000072C1000-memory.dmp

    Filesize

    68KB

  • memory/532-35-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/532-80-0x00000000073F0000-0x000000000740A000-memory.dmp

    Filesize

    104KB

  • memory/532-75-0x0000000007120000-0x000000000712A000-memory.dmp

    Filesize

    40KB

  • memory/532-79-0x00000000072F0000-0x0000000007304000-memory.dmp

    Filesize

    80KB

  • memory/532-19-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/1604-123-0x0000000070930000-0x000000007097C000-memory.dmp

    Filesize

    304KB

  • memory/3052-8-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3052-3-0x0000000004E40000-0x0000000004ED2000-memory.dmp

    Filesize

    584KB

  • memory/3052-47-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3052-0-0x000000007532E000-0x000000007532F000-memory.dmp

    Filesize

    4KB

  • memory/3052-10-0x000000000CDF0000-0x000000000CE8C000-memory.dmp

    Filesize

    624KB

  • memory/3052-6-0x0000000005240000-0x000000000525C000-memory.dmp

    Filesize

    112KB

  • memory/3052-9-0x0000000004850000-0x00000000048A2000-memory.dmp

    Filesize

    328KB

  • memory/3052-4-0x0000000004E20000-0x0000000004E2A000-memory.dmp

    Filesize

    40KB

  • memory/3052-1-0x00000000003A0000-0x0000000000430000-memory.dmp

    Filesize

    576KB

  • memory/3052-5-0x0000000075320000-0x0000000075AD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3052-2-0x00000000053F0000-0x0000000005994000-memory.dmp

    Filesize

    5.6MB

  • memory/3052-7-0x000000007532E000-0x000000007532F000-memory.dmp

    Filesize

    4KB

  • memory/3636-45-0x0000000000400000-0x0000000000410000-memory.dmp

    Filesize

    64KB

  • memory/4260-110-0x0000000007F10000-0x0000000007F21000-memory.dmp

    Filesize

    68KB

  • memory/4260-111-0x0000000007F50000-0x0000000007F64000-memory.dmp

    Filesize

    80KB

  • memory/4260-99-0x0000000070930000-0x000000007097C000-memory.dmp

    Filesize

    304KB

  • memory/4260-109-0x0000000007C50000-0x0000000007CF3000-memory.dmp

    Filesize

    652KB

  • memory/4260-98-0x0000000006DD0000-0x0000000006E1C000-memory.dmp

    Filesize

    304KB

  • memory/4260-87-0x0000000006370000-0x00000000066C4000-memory.dmp

    Filesize

    3.3MB

  • memory/4596-143-0x0000000005C60000-0x0000000005FB4000-memory.dmp

    Filesize

    3.3MB

  • memory/4596-145-0x0000000070930000-0x000000007097C000-memory.dmp

    Filesize

    304KB