Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    10-12-2024 02:17

General

  • Target

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe

  • Size

    3.6MB

  • MD5

    d3f515d42cf7e62738c596dc4ba9fdb9

  • SHA1

    f63216b18ab4265d9c0b3243ba491fcb74b1bac6

  • SHA256

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

  • SHA512

    81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

  • SSDEEP

    49152:TwWtZnTwCk7UHla796h+16eUMTycWaX/Ngvv1VlHIPIV/CdQvJuJ44wPcbErkcz3:TwwvYXUMmczWvnlo0KSj5L1Ln9

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

C2

185.208.158.187:4449

Mutex

tnybaidkzovl

Attributes
  • delay

    10

  • install

    true

  • install_file

    NotepadUpdate.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • 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.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 60 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe
    "C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2612
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2920
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7DA8.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:3012
    • C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe
      "C:\Users\Admin\AppData\Local\Temp\1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2672
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"' & exit
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2080
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "NotepadUpdate" /tr '"C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"'
          4⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:1440
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA959.tmp.bat""
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2892
        • C:\Windows\SysWOW64\timeout.exe
          timeout 3
          4⤵
          • System Location Discovery: System Language Discovery
          • Delays execution with timeout.exe
          PID:2648
        • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
          "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:3044
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yRnixT.exe"
            5⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:588
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\yRnixT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF44E.tmp"
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1748
          • C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe
            "C:\Users\Admin\AppData\Roaming\NotepadUpdate.exe"
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1696

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab208D.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\Temp\Tar324C.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • C:\Users\Admin\AppData\Local\Temp\tmp7DA8.tmp

    Filesize

    1KB

    MD5

    15f366ffcaa7026c3c02699ea66a7c2c

    SHA1

    a02b24275911d55138253f7f8e4b5c1b57e2a2d2

    SHA256

    b3e6536ccac1429c783908337155f2e50af2682ef8e2b6a525996a350fd3e455

    SHA512

    ea83e9e355ead0d1d30774e0dc24fd7e05346ca0fd2a41776c29804d308145a5063461479d9d937a7c48948f25f291fa3b14eaa758314e04425d7b5b342f4390

  • C:\Users\Admin\AppData\Local\Temp\tmpA959.tmp.bat

    Filesize

    157B

    MD5

    fe324164e24e2f11419828e394f0b9e3

    SHA1

    f84b882c3d77cd4c3f44d920e760309835ae9995

    SHA256

    bb2a9682ae5648589ae1b267ccb99ec04aa449488542ed712e545104fa6f3959

    SHA512

    7b6e5a73fc2d6a98514d7a8834c752a41d68e59a552b81f702f18273f1c635e8e66aa58fdee7dbdfa128d6b36f14bba33b3b92fdbfa2bbdfe5be68365900faef

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\O3RFCTUD62PAEGZIKJGD.temp

    Filesize

    7KB

    MD5

    ebb17f34568c75eadb5fbc3f6f4d1c4e

    SHA1

    e36f2f3cb6814a76e5bdb84ff702bca9980a6382

    SHA256

    993bc34387fae896787dd7f35a306ca615f80576e521c113815dcd3112d51c88

    SHA512

    3c67b4b07534e7bb71c963a3d110086860f8c056f0d629a4710d5c5d7d38ccf00a455c22bc953eb4482a2383999eb15f1f549e7fff8ee82ffeaf30aca3a6dcd0

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    0580e141295aaa109181a85f713ffe4f

    SHA1

    8c42a35279e295b4d9993acfc6cbd95c4b91bfc9

    SHA256

    5bbe7b7483ba3ed9c13c5f5aaefe759f1798795d027c80f03e88859507c6007c

    SHA512

    193743f7bbe3d3800641c01cf8c6c3dc0a6daff24ce6026b53fdae18e9f0a1b0b85b94406c19b0ac7c5baadc802376720de1bc56f0f95df68a2ef1873297ec88

  • C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

    Filesize

    8B

    MD5

    cf759e4c5f14fe3eec41b87ed756cea8

    SHA1

    c27c796bb3c2fac929359563676f4ba1ffada1f5

    SHA256

    c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

    SHA512

    c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

  • \Users\Admin\AppData\Roaming\NotepadUpdate.exe

    Filesize

    3.6MB

    MD5

    d3f515d42cf7e62738c596dc4ba9fdb9

    SHA1

    f63216b18ab4265d9c0b3243ba491fcb74b1bac6

    SHA256

    1e01e5c379d7504669a75f317c60c31297dc347792b9131fad73092a88383393

    SHA512

    81462412b18e715f81499769c6e3a89cd612683151b7984452dac4f1e5b2e69b6a0fc6542103327e6e46668d9b2268502fcc98415c44a054f1168f7bc8fefb52

  • memory/1696-52-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1696-55-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/1696-57-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2612-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

    Filesize

    4KB

  • memory/2612-6-0x0000000005110000-0x000000000516C000-memory.dmp

    Filesize

    368KB

  • memory/2612-1-0x0000000001190000-0x0000000001278000-memory.dmp

    Filesize

    928KB

  • memory/2612-2-0x0000000074B40000-0x000000007522E000-memory.dmp

    Filesize

    6.9MB

  • memory/2612-5-0x0000000074B40000-0x000000007522E000-memory.dmp

    Filesize

    6.9MB

  • memory/2612-27-0x0000000074B40000-0x000000007522E000-memory.dmp

    Filesize

    6.9MB

  • memory/2612-4-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

    Filesize

    4KB

  • memory/2612-3-0x00000000003B0000-0x00000000003CE000-memory.dmp

    Filesize

    120KB

  • memory/2672-23-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-20-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2672-16-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-14-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-24-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-25-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/2672-18-0x0000000000400000-0x0000000000418000-memory.dmp

    Filesize

    96KB

  • memory/3044-40-0x0000000000DE0000-0x0000000000EC8000-memory.dmp

    Filesize

    928KB