Overview

overview

10

Static

static

10

109c3b6330...6N.exe

windows7-x64

10

109c3b6330...6N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    96s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-11-2024 01:40

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General

  • Target

    109c3b63306fcc197268155a8f45681e14987eb207d4b8eef74978cf5a4114e6N.exe

  • Size

    63KB

  • MD5

    6c7adc2f28f40d79c09fdd2d59a94ab0

  • SHA1

    48c3f3223376146c61a00c948447c188147c5dae

  • SHA256

    109c3b63306fcc197268155a8f45681e14987eb207d4b8eef74978cf5a4114e6

  • SHA512

    d3db6d8ec0835540299c0faf35d87327090d36b6fa3fd14fc26a452bdb7c084093d2424238ee0e2b847d07c33cb871f7cf5cd428226b08e1fc317ed88259a4a6

  • SSDEEP

    1536:YhahLzRQA+dsHbp0G8QOjeUJyq8wJGbbqwXGazpqKmY7:YhahLzRQA+dsHbp0AOjeUw8Gbbqwwz

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

31.57.135.113:4199

Mutex

w5g64wefd5w4ef

Attributes
  • delay

    1

  • install

    true

  • install_file

    dllhost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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
    evasion
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\109c3b63306fcc197268155a8f45681e14987eb207d4b8eef74978cf5a4114e6N.exe
    "C:\Users\Admin\AppData\Local\Temp\109c3b63306fcc197268155a8f45681e14987eb207d4b8eef74978cf5a4114e6N.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3212
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "dllhost" /tr '"C:\Users\Admin\AppData\Roaming\dllhost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3140
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "dllhost" /tr '"C:\Users\Admin\AppData\Roaming\dllhost.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2772
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp87BE.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4032
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4536
      • C:\Users\Admin\AppData\Roaming\dllhost.exe
        "C:\Users\Admin\AppData\Roaming\dllhost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:884

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp87BE.tmp.bat
    Filesize

    151B

    MD5

    5fdb4db0a6c58f4beca2e81e3efd18d0

    SHA1

    c1b6e53ac321836b0422f6741c2adf2e802f0ed1

    SHA256

    5d6114e3f58b67e561a8e119c0789e6a06fa9715688dc684f946fa2a7da17f1a

    SHA512

    faafd29605a8e7611b1a617782afd4678620889dd0f3a04e1cb53ee5417bf6d7a30bf1422fd1fcba96888b5aef4366d8851e581fbdd3ef57154cbfb913c67a3a

    Download Submit

  • C:\Users\Admin\AppData\Roaming\dllhost.exe
    Filesize

    63KB

    MD5

    6c7adc2f28f40d79c09fdd2d59a94ab0

    SHA1

    48c3f3223376146c61a00c948447c188147c5dae

    SHA256

    109c3b63306fcc197268155a8f45681e14987eb207d4b8eef74978cf5a4114e6

    SHA512

    d3db6d8ec0835540299c0faf35d87327090d36b6fa3fd14fc26a452bdb7c084093d2424238ee0e2b847d07c33cb871f7cf5cd428226b08e1fc317ed88259a4a6

    Download Submit

  • memory/3212-0-0x00007FFDBCE03000-0x00007FFDBCE05000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3212-1-0x0000000000710000-0x0000000000726000-memory.dmp

    Filesize

    88KB

    Download

  • memory/3212-2-0x00007FFDBCE00000-0x00007FFDBD8C1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3212-8-0x00007FFDBCE00000-0x00007FFDBD8C1000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3212-7-0x00007FFDBCE00000-0x00007FFDBD8C1000-memory.dmp

    Filesize

    10.8MB

    Download