Windows 7 deprecation

Windows 7 will be removed from tria.ge on 2025-03-31

Analysis

  • max time kernel
    34s
  • max time network
    38s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/01/2025, 20:54

General

  • Target

    Update.exe

  • Size

    413KB

  • MD5

    d0564fc7770410d9c9efddfe4318fe40

  • SHA1

    70e9c65c95ef79a8fb412d4b5baa747be19f358f

  • SHA256

    926ca6246cafb2f73a2a44325a1c2c9a5e136f109cf5fc1beecfe2611adc95e8

  • SHA512

    0dbad5c423b060dc3122c8b1d351e6fd519526de74ff01c17997e05ec88b91cb2c9e9267ed406f0f652cd82c788318ca671e7bf6fc6b4b810f780a04521bc37d

  • SSDEEP

    12288:t1TVVfbfGyO2NHb64vVEWiFjwqLlShatH1GK:9NeyO2NHb64vVEZjbLlS0D

Malware Config

Extracted

Family

quasar

Version

3.1.5

Botnet

Office04

C2

217.254.98.158:4782

Mutex

$Sxr-0AJKEcQg2SeZyXPT01

Attributes
  • encryption_key

    YCpmQrQIUT3FKePhT9Ax

  • install_name

    rat_client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    SeroXen Client Startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

  • Drops file in Drivers directory 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 2 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Update.exe
    "C:\Users\Admin\AppData\Local\Temp\Update.exe"
    1⤵
    • Drops file in Drivers directory
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3552
    • C:\Users\Admin\AppData\Roaming\SubDir\rat_client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\rat_client.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2928
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -WindowStyle Hidden -Command "Add-MpPreference -ExclusionPath (Get-Item -LiteralPath $env:SystemRoot).Root"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:384
    • C:\Windows\SysWOW64\ipconfig.exe
      "C:\Windows\System32\ipconfig.exe" /flushdns
      2⤵
      • System Location Discovery: System Language Discovery
      • Gathers network information
      PID:8
    • C:\Windows\SysWOW64\SCHTASKS.exe
      "SCHTASKS.exe" /create /tn "$77Update.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Update.exe'" /sc onlogon /rl HIGHEST
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:4224

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_xklkxrd3.ih5.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Roaming\SubDir\rat_client.exe

    Filesize

    413KB

    MD5

    d0564fc7770410d9c9efddfe4318fe40

    SHA1

    70e9c65c95ef79a8fb412d4b5baa747be19f358f

    SHA256

    926ca6246cafb2f73a2a44325a1c2c9a5e136f109cf5fc1beecfe2611adc95e8

    SHA512

    0dbad5c423b060dc3122c8b1d351e6fd519526de74ff01c17997e05ec88b91cb2c9e9267ed406f0f652cd82c788318ca671e7bf6fc6b4b810f780a04521bc37d

  • memory/384-16-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/384-41-0x00000000075D0000-0x0000000007602000-memory.dmp

    Filesize

    200KB

  • memory/384-58-0x0000000008120000-0x0000000008134000-memory.dmp

    Filesize

    80KB

  • memory/384-57-0x0000000008110000-0x000000000811E000-memory.dmp

    Filesize

    56KB

  • memory/384-56-0x00000000080D0000-0x00000000080E1000-memory.dmp

    Filesize

    68KB

  • memory/384-55-0x00000000079B0000-0x00000000079BA000-memory.dmp

    Filesize

    40KB

  • memory/384-60-0x0000000008150000-0x0000000008158000-memory.dmp

    Filesize

    32KB

  • memory/384-54-0x0000000008730000-0x0000000008DAA000-memory.dmp

    Filesize

    6.5MB

  • memory/384-53-0x0000000007810000-0x00000000078B3000-memory.dmp

    Filesize

    652KB

  • memory/384-15-0x0000000004ED0000-0x0000000004F06000-memory.dmp

    Filesize

    216KB

  • memory/384-42-0x0000000071700000-0x000000007174C000-memory.dmp

    Filesize

    304KB

  • memory/384-17-0x0000000005540000-0x0000000005B68000-memory.dmp

    Filesize

    6.2MB

  • memory/384-59-0x0000000008160000-0x000000000817A000-memory.dmp

    Filesize

    104KB

  • memory/384-63-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/384-18-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/384-25-0x0000000005CE0000-0x0000000005D02000-memory.dmp

    Filesize

    136KB

  • memory/384-27-0x0000000005E80000-0x0000000005EE6000-memory.dmp

    Filesize

    408KB

  • memory/384-31-0x0000000005FB0000-0x0000000006304000-memory.dmp

    Filesize

    3.3MB

  • memory/384-52-0x00000000075B0000-0x00000000075CE000-memory.dmp

    Filesize

    120KB

  • memory/384-34-0x0000000006490000-0x00000000064AE000-memory.dmp

    Filesize

    120KB

  • memory/384-35-0x00000000069B0000-0x00000000069FC000-memory.dmp

    Filesize

    304KB

  • memory/384-19-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/384-38-0x00000000074B0000-0x0000000007546000-memory.dmp

    Filesize

    600KB

  • memory/384-39-0x00000000068E0000-0x00000000068FA000-memory.dmp

    Filesize

    104KB

  • memory/384-40-0x0000000006950000-0x0000000006972000-memory.dmp

    Filesize

    136KB

  • memory/2928-14-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/2928-37-0x0000000006740000-0x000000000674A000-memory.dmp

    Filesize

    40KB

  • memory/2928-13-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/2928-64-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/3552-33-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/3552-0-0x000000007468E000-0x000000007468F000-memory.dmp

    Filesize

    4KB

  • memory/3552-7-0x0000000005E90000-0x0000000005ECC000-memory.dmp

    Filesize

    240KB

  • memory/3552-6-0x0000000005190000-0x00000000051A2000-memory.dmp

    Filesize

    72KB

  • memory/3552-5-0x0000000004DC0000-0x0000000004E26000-memory.dmp

    Filesize

    408KB

  • memory/3552-4-0x0000000074680000-0x0000000074E30000-memory.dmp

    Filesize

    7.7MB

  • memory/3552-3-0x0000000004CB0000-0x0000000004D42000-memory.dmp

    Filesize

    584KB

  • memory/3552-2-0x00000000051C0000-0x0000000005764000-memory.dmp

    Filesize

    5.6MB

  • memory/3552-1-0x00000000001C0000-0x000000000022E000-memory.dmp

    Filesize

    440KB