Analysis

  • max time kernel
    119s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-01-2025 12:25

General

  • Target

    b73b703df104bdc6a6088d0096448ba4312938bc738791a50d55792788b46913.exe

  • Size

    159KB

  • MD5

    f2d8c3dec1e9985bc659d18341b573bf

  • SHA1

    d0e7b2fe9fc1aaadc0ef2c1256c7754f3bbe6e8f

  • SHA256

    b73b703df104bdc6a6088d0096448ba4312938bc738791a50d55792788b46913

  • SHA512

    415e0955db51117127d9440ff5cdae98cf6b7c16e46cc1aa8772d4631cb3d0c8338c016480b276b41a2c570be4d6f956286d5a054e2c76749b45336c4d0b7c4a

  • SSDEEP

    3072:0325N7aVopufIeZuVGoFkfAylFYOKYoGCllFhdoH3hZ9Roe2eX9pxK:j1U8peZuVDRkClAXhT2eF9O

Malware Config

Extracted

Family

xworm

C2

indian-tall.gl.at.ply.gg:65520

Attributes
  • Install_directory

    %AppData%

  • install_file

    keyauth.exe

Signatures

  • Detect Xworm Payload 4 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

  • Xworm family
  • Command and Scripting Interpreter: PowerShell 1 TTPs 8 IoCs

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

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 4 IoCs
  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 37 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.

  • 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 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 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\b73b703df104bdc6a6088d0096448ba4312938bc738791a50d55792788b46913.exe
    "C:\Users\Admin\AppData\Local\Temp\b73b703df104bdc6a6088d0096448ba4312938bc738791a50d55792788b46913.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHkAcgB0ACMAPgBBAGQAZAAtAFQAeQBwAGUAIAAtAEEAcwBzAGUAbQBiAGwAeQBOAGEAbQBlACAAUwB5AHMAdABlAG0ALgBXAGkAbgBkAG8AdwBzAC4ARgBvAHIAbQBzADsAPAAjAHcAeAB5ACMAPgBbAFMAeQBzAHQAZQBtAC4AVwBpAG4AZABvAHcAcwAuAEYAbwByAG0AcwAuAE0AZQBzAHMAYQBnAGUAQgBvAHgAXQA6ADoAUwBoAG8AdwAoACcARQByAHIAbwByAF8AYwBvAGQAZQBfADAAeAAxACcALAAnACcALAAnAE8ASwAnACwAJwBFAHIAcgBvAHIAJwApADwAIwB2AHcAZwAjAD4A"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:380
    • C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe
      "C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4484
      • 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\XwormLoader.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3304
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XwormLoader.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1424
      • 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\XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1592
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3232
    • C:\Users\Admin\AppData\Local\Temp\xclient.exe
      "C:\Users\Admin\AppData\Local\Temp\xclient.exe"
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2524
      • 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\xclient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4224
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'xclient.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2720
      • 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\keyauth.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3980
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'keyauth.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3828
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "keyauth" /tr "C:\Users\Admin\AppData\Roaming\keyauth.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3020
  • C:\Users\Admin\AppData\Roaming\keyauth.exe
    C:\Users\Admin\AppData\Roaming\keyauth.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4148
  • C:\Users\Admin\AppData\Roaming\keyauth.exe
    C:\Users\Admin\AppData\Roaming\keyauth.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2900

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\keyauth.exe.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

    15dde0683cd1ca19785d7262f554ba93

    SHA1

    d039c577e438546d10ac64837b05da480d06bf69

    SHA256

    d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

    SHA512

    57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

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

    Filesize

    944B

    MD5

    9bc110200117a3752313ca2acaf8a9e1

    SHA1

    fda6b7da2e7b0175b391475ca78d1b4cf2147cd3

    SHA256

    c88e4bbb64f7fa31429ebe82c1cf07785c44486f37576f783a26ac856e02a4eb

    SHA512

    1f1af32aa18a8cbfcc65b0d4fb7e6ca2705f125eaa85789e981ee68b90c64522e954825abf460d4b4f97567715dfae8d9b0a25a4d54d10bc4c257c472f2e80fb

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

    Filesize

    1KB

    MD5

    f5fc6519219e8ab530a865e149a92a02

    SHA1

    c87b95f3c358c6b12da350bb978ff195d2feb060

    SHA256

    0420d40d4963dede50b4fb06bcd7ed341e9bae388c8cade178c52d0f4088d23f

    SHA512

    dcd64a54d777f4832b959f91f4deea1106a6065dd7d0421d47e5de28a227033387bc9af695111b669aad7b2b36922ef09e5384628c708fe595e7daff7bb5468e

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

    Filesize

    944B

    MD5

    62623d22bd9e037191765d5083ce16a3

    SHA1

    4a07da6872672f715a4780513d95ed8ddeefd259

    SHA256

    95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

    SHA512

    9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

    Filesize

    944B

    MD5

    98baf5117c4fcec1692067d200c58ab3

    SHA1

    5b33a57b72141e7508b615e17fb621612cb8e390

    SHA256

    30bf8496e9a08f4fdfe4767abcd565f92b6da06ca1c7823a70cb7cab16262e51

    SHA512

    344a70bfc037d54176f12db91f05bf4295bb587a5062fd1febe6f52853571170bd8ef6042cb87b893185bbae1937cf77b679d7970f8cc1c2666b0b7c1b32987d

  • C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe

    Filesize

    77KB

    MD5

    e7525a2d46d78f6ea17a3c32815cc1a2

    SHA1

    734b924697ddfd032ae0f2467b404b91650d72f3

    SHA256

    c388c156025273419447629bfb28728b32c785a47968c7bce227adb31a66ffa3

    SHA512

    cb38565d63a429517493a5093ab93861744b4584594221c7fb558e9f5832b3feaf3f52f902079f7e7299ce2008fa03cb1ff59118469ce6461d9319ae2d5b2d34

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u125xl0b.1gi.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\xclient.exe

    Filesize

    74KB

    MD5

    8f0fab5837f63b48e3d0bf98013ecde6

    SHA1

    03e392b90a808f77595f571dd01c8ce864e87d2c

    SHA256

    703c26b59e5eefc02cc93db1f440a7ed273cdb8928f082105f41120adc41964d

    SHA512

    d980674a3343c51c77b8a05b264e2c01a38f8e4ffa300763dbb2ff11e66dcce0555437e5b4ced5a6fffd0793577c9c816403987b5affccf1639bbf1338f7884d

  • memory/380-35-0x0000024935600000-0x0000024935622000-memory.dmp

    Filesize

    136KB

  • memory/2524-28-0x0000000000210000-0x0000000000228000-memory.dmp

    Filesize

    96KB

  • memory/4484-40-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4484-22-0x00000000003F0000-0x000000000040A000-memory.dmp

    Filesize

    104KB

  • memory/4484-24-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4484-137-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4484-138-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4656-39-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4656-0-0x00007FFFA5FC3000-0x00007FFFA5FC5000-memory.dmp

    Filesize

    8KB

  • memory/4656-2-0x00007FFFA5FC0000-0x00007FFFA6A81000-memory.dmp

    Filesize

    10.8MB

  • memory/4656-1-0x0000000000D80000-0x0000000000DAE000-memory.dmp

    Filesize

    184KB