Overview

overview

10

Static

static

10

Solara.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/03/2025, 15:31

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General

  • Target

    Solara.exe

  • Size

    44KB

  • MD5

    1bc146eb10ffc7f54a10675c0a50b8aa

  • SHA1

    1defb98f738ad166ae75627791cfa5ea1a67cff1

  • SHA256

    12c3013d0927f9f5b1c5706730c4a58b21dc88a5a9cbc09a9f45cdaea6ef5645

  • SHA512

    257fd0f675d9b0d5c813193bb1d551b1ba224c367aa316069ac5d79e2d0824a010e3efc3cf2b4c067271597e48d4b892b514df11ea85e201c26d244dae8da259

  • SSDEEP

    768:wNTRmetisWt2tKdouL3ZE9R9yFRPG9Xq6OOChwsGO6MiP:wNTketz8npE92Fw9Xq6OOCKVO9iP

Score
10/10
xwormexecutionpersistencerattrojan

Malware Config

Extracted

Family

xworm

Version

5.0

Mutex

6DZS49PzoxsJqrLO

Attributes
  • Install_directory

    %AppData%

  • install_file

    svchost.exe

  • pastebin_url

    https://pastebin.com/raw/FgmKAhUD

aes.plain

Signatures

  • Detect Xworm Payload 2 IoCs
  • Xworm

    Xworm is a remote access trojan written in C#.

    trojanratxworm
  • Xworm family
    xworm
  • 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.

    execution
  • 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 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

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

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 58 IoCs
  • Suspicious use of AdjustPrivilegeToken 11 IoCs
  • Suspicious use of FindShellTrayWindow 45 IoCs
  • Suspicious use of SendNotifyMessage 45 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 10 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\Solara.exe
    "C:\Users\Admin\AppData\Local\Temp\Solara.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:3372
    • 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\Solara.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4988
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2820
    • 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:4856
    • 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:4648
    • 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:4868
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3128
  • C:\Users\Admin\AppData\Roaming\svchost.exe
    C:\Users\Admin\AppData\Roaming\svchost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:2736
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4996

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

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
    Filesize

    654B

    MD5

    2ff39f6c7249774be85fd60a8f9a245e

    SHA1

    684ff36b31aedc1e587c8496c02722c6698c1c4e

    SHA256

    e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

    SHA512

    1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

    Download Submit

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

    944B

    MD5

    62623d22bd9e037191765d5083ce16a3

    SHA1

    4a07da6872672f715a4780513d95ed8ddeefd259

    SHA256

    95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

    SHA512

    9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

    Download Submit

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

    944B

    MD5

    6d14ccefeb263594e60b1765e131f7a3

    SHA1

    4a9ebdc0dff58645406c40b7b140e1b174756721

    SHA256

    57cd435c8b2bf10a2c77698301789c032e1b6b623ff1420c72e8bca0b10f1e5c

    SHA512

    2013a26123f72a4106524fd9d7389ac4654f97033d22707efc084fb2a3ad01c298eb64f01bb64861ab603615022dbe7cfc97475346edb16b3ba72e905127f101

    Download Submit

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

    944B

    MD5

    9c740b7699e2363ac4ecdf496520ca35

    SHA1

    aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9

    SHA256

    be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61

    SHA512

    8885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ko2dqk03.ej2.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk
    Filesize

    771B

    MD5

    6675724f2e7e5b7ea344313e8d727ba0

    SHA1

    356ad45bdc08a3589c4bca9e9d94b576d2fbf706

    SHA256

    62106521a41614119ee6c0b450a82666b4052f23699704ce61c43f18b717bfa4

    SHA512

    f31d56d6c58a2300112847fbed867f847cb95227b23e46094494ac91804b58e79dc45feda72a3ee3f557311886081d368ae96859dea2a5a115ca432d39472c78

    Download Submit

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

    44KB

    MD5

    1bc146eb10ffc7f54a10675c0a50b8aa

    SHA1

    1defb98f738ad166ae75627791cfa5ea1a67cff1

    SHA256

    12c3013d0927f9f5b1c5706730c4a58b21dc88a5a9cbc09a9f45cdaea6ef5645

    SHA512

    257fd0f675d9b0d5c813193bb1d551b1ba224c367aa316069ac5d79e2d0824a010e3efc3cf2b4c067271597e48d4b892b514df11ea85e201c26d244dae8da259

    Download Submit

  • memory/3372-0-0x00007FFA33793000-0x00007FFA33795000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3372-58-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3372-57-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3372-1-0x00000000001B0000-0x00000000001C2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/3372-56-0x00007FFA33793000-0x00007FFA33795000-memory.dmp

    Filesize

    8KB

    Download

  • memory/4988-17-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4988-14-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4988-13-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4988-12-0x00007FFA33790000-0x00007FFA34251000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/4988-11-0x00000150D2A10000-0x00000150D2A32000-memory.dmp

    Filesize

    136KB

    Download

  • memory/4996-77-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-67-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-66-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-76-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-75-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-74-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-73-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-72-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-71-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4996-65-0x000002531DDA0000-0x000002531DDA1000-memory.dmp

    Filesize

    4KB

    Download