Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-08-2024 15:39

General

  • Target

    Infected.exe

  • Size

    63KB

  • MD5

    885f0908a5c74a41716e8ade2dc612fd

  • SHA1

    5a5503fcece1e64decf4dbff9d2a98f8a360826f

  • SHA256

    1bafd535f75c0da3eda221884b50998cbb2dc20175da8054dbbe2530b111bba9

  • SHA512

    bd525bf9ce956042617b107f521c6c633a9b3f3f57df0a2ad972048765ecf8719b847669fd1b499fe4bde1acfa5c57522e775f735825c4e708eebcc94a87fe4a

  • SSDEEP

    768:3ig6BqomfHz4c78F3C8A+XuiazcBRL5JTk1+T4KSBGHmDbD/ph0oXZNGSuMdpqKX:++4/FdSJYUbdh9ZvuMdpqKmY7

Score
10/10

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

127.0.0.1:4040

https://6eeb-109-103-52-164:3232

https://6eeb-109-103-52-164:4040

Attributes
  • delay

    3

  • install

    true

  • install_file

    spoofer.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • 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\Infected.exe
    "C:\Users\Admin\AppData\Local\Temp\Infected.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "spoofer" /tr '"C:\Users\Admin\AppData\Roaming\spoofer.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3040
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "spoofer" /tr '"C:\Users\Admin\AppData\Roaming\spoofer.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2368
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3496
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4060
      • C:\Users\Admin\AppData\Roaming\spoofer.exe
        "C:\Users\Admin\AppData\Roaming\spoofer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAF5A.tmp.bat

    Filesize

    151B

    MD5

    722c9ad37719527fe330059460f8da32

    SHA1

    2c9e542c49ee034e7670f97f24a836a20b57881e

    SHA256

    5be8e0f94dc0a8d2d19ff08f348daf1dbd7c03b244d927acc1087cdac075968b

    SHA512

    9ffbe05bc7ebdefe6126002f0a73e092510221ea5de944c0a07294a75e237d8599f8d7babbefeb9fd2f6fa07f3fc1526ca0934b51e46140ad3a97cdec48c538d

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

    Filesize

    63KB

    MD5

    885f0908a5c74a41716e8ade2dc612fd

    SHA1

    5a5503fcece1e64decf4dbff9d2a98f8a360826f

    SHA256

    1bafd535f75c0da3eda221884b50998cbb2dc20175da8054dbbe2530b111bba9

    SHA512

    bd525bf9ce956042617b107f521c6c633a9b3f3f57df0a2ad972048765ecf8719b847669fd1b499fe4bde1acfa5c57522e775f735825c4e708eebcc94a87fe4a

  • memory/4920-0-0x00007FFF10B93000-0x00007FFF10B95000-memory.dmp

    Filesize

    8KB

  • memory/4920-1-0x0000000000C10000-0x0000000000C26000-memory.dmp

    Filesize

    88KB

  • memory/4920-2-0x00007FFF10B90000-0x00007FFF11651000-memory.dmp

    Filesize

    10.8MB

  • memory/4920-7-0x00007FFF10B90000-0x00007FFF11651000-memory.dmp

    Filesize

    10.8MB