Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2024 14:14

General

  • Target

    d90fa1d7642354da268e0eadb417be46626fbe74e68364aa0a80a1ba08f017d5.exe

  • Size

    3.2MB

  • MD5

    ee6463bd6ab5a0299ce45091cc84f703

  • SHA1

    4ba4d91c7db4d895f3cfbb684140a0463a472a5d

  • SHA256

    d90fa1d7642354da268e0eadb417be46626fbe74e68364aa0a80a1ba08f017d5

  • SHA512

    a440ee567a831193ce0e8001d08cdd5b46b6d94a19b64f7ceb7cb0037ccb99d3c5390d79686f9557800ab73789df4a2c75b72349b799de541c94ab27f6b53a5e

  • SSDEEP

    98304:ZtiwNlunVqirIBmG9Li2JWrV2yM0SlNevauUaO/tCI4:Zt9unlrIBT9LVJoV2yM0SlNevwCV

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Axotrojan

C2

eu-central-7075.packetriot.net:22342

167.71.56.116:22342

Mutex

34892381-1dda-4b06-87a2-3e413b932ac8

Attributes
  • encryption_key

    4B13DC71783277444E966E1D66F9171ABFC15E88

  • install_name

    Clientformyslut.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Axo startup

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Modifies Windows Firewall 2 TTPs 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 6 IoCs
  • Executes dropped EXE 4 IoCs
  • Obfuscated Files or Information: Command Obfuscation 1 TTPs

    Adversaries may obfuscate content during command execution to impede detection.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 9 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\d90fa1d7642354da268e0eadb417be46626fbe74e68364aa0a80a1ba08f017d5.exe
    "C:\Users\Admin\AppData\Local\Temp\d90fa1d7642354da268e0eadb417be46626fbe74e68364aa0a80a1ba08f017d5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3644
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAG4AdgBlACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGQAegBmACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAG0AcABiACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGIAcQB1ACMAPgA="
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4020
    • C:\Users\Admin\AppData\Local\Temp\pkriot3.exe
      "C:\Users\Admin\AppData\Local\Temp\pkriot3.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1584
      • C:\Users\Admin\AppData\Local\Temp\server.exe
        "C:\Users\Admin\AppData\Local\Temp\server.exe"
        3⤵
        • Drops startup file
        • Executes dropped EXE
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1780
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:112
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe"
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:1764
        • C:\Windows\SysWOW64\netsh.exe
          netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
          4⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          • System Location Discovery: System Language Discovery
          PID:1616
    • C:\Users\Admin\AppData\Local\Temp\pkriot1.exe
      "C:\Users\Admin\AppData\Local\Temp\pkriot1.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4384
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "Axo startup" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Clientformyslut.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3948
      • C:\Windows\system32\SubDir\Clientformyslut.exe
        "C:\Windows\system32\SubDir\Clientformyslut.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2544
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks" /create /tn "Axo startup" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Clientformyslut.exe" /rl HIGHEST /f
          4⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wgtfronh.2qs.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\pkriot1.exe

    Filesize

    3.1MB

    MD5

    9a3043abedc95a0a1c5d4fdb50e62d34

    SHA1

    2f432259c81f112905e24016191a1186e4fbdc88

    SHA256

    18df830ce713c45edf04f76b23da7e5f1c57bcacd26b075ed94904da6bf94f74

    SHA512

    fb7f692b1b035d732a175b40760baacc6f7ccfa88ca26da0f74eda2fb542a9e10c47c1309b60caf7169cb7a9035e8e2083ed5e5c2bc4292c9ef5e1c85ecf7c1c

  • C:\Users\Admin\AppData\Local\Temp\pkriot3.exe

    Filesize

    93KB

    MD5

    55e2016fcb659bdf0f46a24ef2876609

    SHA1

    5afb69f26ddf1884372643a2b00d16a481fc7c26

    SHA256

    3825fe6fd9e8754b3d4a374b8c73884647c6898d5e1220a0fe89b1a3dc8e35c4

    SHA512

    4de0fb035b904bd2557d48aacfea53346748e0dbda86b710ee86796c374c37fd35e50f4d8b05cd1c058f95665894629f8848f4bce45378c00ced771baaea3e46

  • C:\Users\Admin\AppData\Roaming\app

    Filesize

    5B

    MD5

    850ad04adc35f6ec7809f0f70de8300c

    SHA1

    06387beffabdf4ea012664a1d2693862a5e5a181

    SHA256

    59f6eeca3c022531b409b0dc1ea7c1d244ecc7af5b67a5600470b59cdbc04abe

    SHA512

    fca8d80dcdc3a14a04e5ae665dfae9c7b915d4b52b6a24b271d4ad67d9c72c2485815dcb097721d952458857eda8c0edac23f997486a3a1936693b1a5bb35532

  • memory/1584-25-0x00000000742B0000-0x0000000074861000-memory.dmp

    Filesize

    5.7MB

  • memory/1584-12-0x00000000742B2000-0x00000000742B3000-memory.dmp

    Filesize

    4KB

  • memory/1584-58-0x00000000742B0000-0x0000000074861000-memory.dmp

    Filesize

    5.7MB

  • memory/1584-22-0x00000000742B0000-0x0000000074861000-memory.dmp

    Filesize

    5.7MB

  • memory/2544-65-0x000000001D8C0000-0x000000001D972000-memory.dmp

    Filesize

    712KB

  • memory/2544-64-0x000000001B920000-0x000000001B970000-memory.dmp

    Filesize

    320KB

  • memory/4020-26-0x0000000002EA0000-0x0000000002EB0000-memory.dmp

    Filesize

    64KB

  • memory/4020-61-0x0000000006830000-0x000000000687C000-memory.dmp

    Filesize

    304KB

  • memory/4020-21-0x0000000003250000-0x0000000003286000-memory.dmp

    Filesize

    216KB

  • memory/4020-33-0x0000000006180000-0x00000000061E6000-memory.dmp

    Filesize

    408KB

  • memory/4020-32-0x0000000006110000-0x0000000006176000-memory.dmp

    Filesize

    408KB

  • memory/4020-34-0x00000000061F0000-0x0000000006544000-memory.dmp

    Filesize

    3.3MB

  • memory/4020-27-0x0000000002EA0000-0x0000000002EB0000-memory.dmp

    Filesize

    64KB

  • memory/4020-31-0x0000000006070000-0x0000000006092000-memory.dmp

    Filesize

    136KB

  • memory/4020-99-0x0000000007D70000-0x0000000007D84000-memory.dmp

    Filesize

    80KB

  • memory/4020-96-0x0000000007D60000-0x0000000007D6E000-memory.dmp

    Filesize

    56KB

  • memory/4020-60-0x0000000006790000-0x00000000067AE000-memory.dmp

    Filesize

    120KB

  • memory/4020-110-0x0000000007E60000-0x0000000007E7A000-memory.dmp

    Filesize

    104KB

  • memory/4020-10-0x0000000073B0E000-0x0000000073B0F000-memory.dmp

    Filesize

    4KB

  • memory/4020-24-0x0000000005A40000-0x0000000006068000-memory.dmp

    Filesize

    6.2MB

  • memory/4020-111-0x0000000007E40000-0x0000000007E48000-memory.dmp

    Filesize

    32KB

  • memory/4020-67-0x000000006F870000-0x000000006F8BC000-memory.dmp

    Filesize

    304KB

  • memory/4020-66-0x0000000006DC0000-0x0000000006DF2000-memory.dmp

    Filesize

    200KB

  • memory/4020-77-0x0000000006DA0000-0x0000000006DBE000-memory.dmp

    Filesize

    120KB

  • memory/4020-78-0x00000000077C0000-0x0000000007863000-memory.dmp

    Filesize

    652KB

  • memory/4020-80-0x0000000007B20000-0x0000000007B3A000-memory.dmp

    Filesize

    104KB

  • memory/4020-79-0x0000000008160000-0x00000000087DA000-memory.dmp

    Filesize

    6.5MB

  • memory/4020-81-0x0000000007BA0000-0x0000000007BAA000-memory.dmp

    Filesize

    40KB

  • memory/4020-82-0x0000000007DA0000-0x0000000007E36000-memory.dmp

    Filesize

    600KB

  • memory/4020-83-0x0000000007D20000-0x0000000007D31000-memory.dmp

    Filesize

    68KB

  • memory/4384-28-0x00007FFEC1A63000-0x00007FFEC1A65000-memory.dmp

    Filesize

    8KB

  • memory/4384-59-0x00007FFEC1A60000-0x00007FFEC2521000-memory.dmp

    Filesize

    10.8MB

  • memory/4384-30-0x00007FFEC1A60000-0x00007FFEC2521000-memory.dmp

    Filesize

    10.8MB

  • memory/4384-23-0x0000000000D00000-0x0000000001024000-memory.dmp

    Filesize

    3.1MB