Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-11-2024 12:45

General

  • Target

    d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe

  • Size

    63KB

  • MD5

    103629304104bf87dc75a086f3aebdb2

  • SHA1

    6a03d4e5bba8c4ffb6c7432f948951b9c6064130

  • SHA256

    d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc

  • SHA512

    30647aa2adf2d7991385b730e15e9954b4b6ba58ab551850ab450b7f83c91b8c89f21de3bbf43fd4e9f858f65a1eac471b929821263c86966d16ead526206604

  • SSDEEP

    768:otD5i7QHEU78j8C8A+XiV07hobtVZTnR48uyq1+T43SBGHmDbDBph0of3g4tyySI:GIgE8lwtNliQYUbrhB3g4AugdpqKmY7E

Score
10/10

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:4321

127.0.0.1:17567

company-parker.gl.at.ply.gg:4321

company-parker.gl.at.ply.gg:17567

Attributes
  • delay

    1

  • install

    true

  • install_file

    Grettaexecutor.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 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
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe
    "C:\Users\Admin\AppData\Local\Temp\d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:636
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Grettaexecutor" /tr '"C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4792
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Grettaexecutor" /tr '"C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2628
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB0B2.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3204
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4596
      • C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe
        "C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:4216

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpB0B2.tmp.bat

    Filesize

    158B

    MD5

    cf564a6aa599246ba21da8b7481efa43

    SHA1

    1b99c1e50538627ecedf67eab70f4233dc285930

    SHA256

    428044c2bbac76d7da216e3e17457b66274e0967dadb2892ad41fb3dc52710f1

    SHA512

    16dadec36198ddcdaa45fc6dcb70815f39f3e5aa274f817bed3b0f8fac74fe11c76a15e5f0cb05d18f342337ef97c12af220b759dde7564b55f314d50a61eb9c

  • C:\Users\Admin\AppData\Roaming\Grettaexecutor.exe

    Filesize

    63KB

    MD5

    103629304104bf87dc75a086f3aebdb2

    SHA1

    6a03d4e5bba8c4ffb6c7432f948951b9c6064130

    SHA256

    d34baac584dbdb97e38274818de69e3aaea8877962c4f50b0b67d51d36e5afcc

    SHA512

    30647aa2adf2d7991385b730e15e9954b4b6ba58ab551850ab450b7f83c91b8c89f21de3bbf43fd4e9f858f65a1eac471b929821263c86966d16ead526206604

  • memory/636-0-0x00007FFC5D9F3000-0x00007FFC5D9F5000-memory.dmp

    Filesize

    8KB

  • memory/636-1-0x00000000003B0000-0x00000000003C6000-memory.dmp

    Filesize

    88KB

  • memory/636-2-0x00007FFC5D9F0000-0x00007FFC5E4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/636-7-0x00007FFC5D9F0000-0x00007FFC5E4B1000-memory.dmp

    Filesize

    10.8MB

  • memory/636-8-0x00007FFC5D9F0000-0x00007FFC5E4B1000-memory.dmp

    Filesize

    10.8MB