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
    30/12/2024, 13:14

General

  • Target

    38fdd127d155587e46643e9ce269951ab8f3c41563437613dc5709aeadfceb32N.exe

  • Size

    3.2MB

  • MD5

    7b9480d4a112833514e7bb79434ac910

  • SHA1

    9050db3991eaa8a2ab8d0485877f54e096660036

  • SHA256

    38fdd127d155587e46643e9ce269951ab8f3c41563437613dc5709aeadfceb32

  • SHA512

    125e94039981aa6072a352dddcc531f58cdc3d9db9bb0557c3ba1561fcd40b7d0fea76b06701ec7e53248c4c0e6ac607c7d8e71dfde0a0221abff9eaa006b693

  • SSDEEP

    98304:ZtiwNlunVqirIBmG9Li2JWrV2yM0SlNevauUaO/tCI:Zt9unlrIBT9LVJoV2yM0SlNevwC

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\38fdd127d155587e46643e9ce269951ab8f3c41563437613dc5709aeadfceb32N.exe
    "C:\Users\Admin\AppData\Local\Temp\38fdd127d155587e46643e9ce269951ab8f3c41563437613dc5709aeadfceb32N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4260
    • 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:2640
    • 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:116
      • 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:4952
        • 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:2224
        • 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:2648
        • 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:4692
    • 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:4548
      • 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:1184
      • 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:4152
        • 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:3908

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wgisb0gs.ebh.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

          b66e20886f9675fe4dbf430ea2d0bf8d

          SHA1

          2e676da72201e6e4482e00b300511900c6aee5a0

          SHA256

          899a421c56c18058cbdd16dd7fb313a57d36c1189ca0f442070ed01d17241414

          SHA512

          f431616522f775de27ccde420f0de6f8b3477fbe97cfd8001864b8289a570916a6dd32c84fcf8af6083d8c1b47c61aa5c73ed1e7cc75213d3f24bd94a93cb870

        • memory/116-19-0x0000000073902000-0x0000000073903000-memory.dmp

          Filesize

          4KB

        • memory/116-21-0x0000000073900000-0x0000000073EB1000-memory.dmp

          Filesize

          5.7MB

        • memory/116-59-0x0000000073900000-0x0000000073EB1000-memory.dmp

          Filesize

          5.7MB

        • memory/116-23-0x0000000073902000-0x0000000073904000-memory.dmp

          Filesize

          8KB

        • memory/2640-49-0x0000000005F70000-0x0000000005F8E000-memory.dmp

          Filesize

          120KB

        • memory/2640-77-0x00000000078D0000-0x0000000007F4A000-memory.dmp

          Filesize

          6.5MB

        • memory/2640-26-0x00000000049A0000-0x00000000049D6000-memory.dmp

          Filesize

          216KB

        • memory/2640-28-0x0000000005080000-0x00000000056A8000-memory.dmp

          Filesize

          6.2MB

        • memory/2640-31-0x0000000004FA0000-0x0000000004FC2000-memory.dmp

          Filesize

          136KB

        • memory/2640-33-0x0000000005910000-0x0000000005976000-memory.dmp

          Filesize

          408KB

        • memory/2640-32-0x00000000058A0000-0x0000000005906000-memory.dmp

          Filesize

          408KB

        • memory/2640-43-0x0000000005980000-0x0000000005CD4000-memory.dmp

          Filesize

          3.3MB

        • memory/2640-99-0x00000000075D0000-0x00000000075D8000-memory.dmp

          Filesize

          32KB

        • memory/2640-50-0x0000000005FA0000-0x0000000005FEC000-memory.dmp

          Filesize

          304KB

        • memory/2640-97-0x00000000075E0000-0x00000000075FA000-memory.dmp

          Filesize

          104KB

        • memory/2640-24-0x000000007309E000-0x000000007309F000-memory.dmp

          Filesize

          4KB

        • memory/2640-95-0x0000000007500000-0x0000000007514000-memory.dmp

          Filesize

          80KB

        • memory/2640-94-0x00000000074F0000-0x00000000074FE000-memory.dmp

          Filesize

          56KB

        • memory/2640-81-0x0000000007490000-0x00000000074A1000-memory.dmp

          Filesize

          68KB

        • memory/2640-65-0x000000006ECE0000-0x000000006ED2C000-memory.dmp

          Filesize

          304KB

        • memory/2640-75-0x0000000007130000-0x000000000714E000-memory.dmp

          Filesize

          120KB

        • memory/2640-76-0x0000000007160000-0x0000000007203000-memory.dmp

          Filesize

          652KB

        • memory/2640-64-0x0000000006540000-0x0000000006572000-memory.dmp

          Filesize

          200KB

        • memory/2640-27-0x0000000004A40000-0x0000000004A50000-memory.dmp

          Filesize

          64KB

        • memory/2640-78-0x0000000007290000-0x00000000072AA000-memory.dmp

          Filesize

          104KB

        • memory/2640-79-0x0000000007300000-0x000000000730A000-memory.dmp

          Filesize

          40KB

        • memory/2640-80-0x0000000007520000-0x00000000075B6000-memory.dmp

          Filesize

          600KB

        • memory/4152-63-0x000000001DE80000-0x000000001DF32000-memory.dmp

          Filesize

          712KB

        • memory/4152-62-0x0000000003180000-0x00000000031D0000-memory.dmp

          Filesize

          320KB

        • memory/4548-20-0x0000000000D20000-0x0000000001044000-memory.dmp

          Filesize

          3.1MB

        • memory/4548-22-0x00007FFD9C523000-0x00007FFD9C525000-memory.dmp

          Filesize

          8KB

        • memory/4548-25-0x000000001BCC0000-0x000000001BCD0000-memory.dmp

          Filesize

          64KB