Overview

overview

10

Static

static

10

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-07-2024 20:56

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General

  • Target

    04105c31ae5c279af8caa8d22410391f0b21b4a6fb426852011932f4f063fe32.exe

  • Size

    130KB

  • MD5

    c894a24b791013f77cd90631beb2c5ea

  • SHA1

    73ceadbc28aa686461fe3d1afc361a3cb2bee327

  • SHA256

    04105c31ae5c279af8caa8d22410391f0b21b4a6fb426852011932f4f063fe32

  • SHA512

    50f95867e36485c11f45cb86599770296c5431853770be58bc2e3f4961d19a105ea2c8554754bfe2c7768cef7e92c96ae56cfb3e8df650be579e28c39c43185c

  • SSDEEP

    1536:A39qSqQzbdqtnkJLlriMv+vLYq/SWkXftdFXGq0h8v6ZiBPUmZFIOdqDVclN:09qszbdqxm1ihk6kvtfGq0ev3U2WZpY

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

mcehonline-48303.portmap.io:48303

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    SearchIndexer.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • 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 4 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\04105c31ae5c279af8caa8d22410391f0b21b4a6fb426852011932f4f063fe32.exe
    "C:\Users\Admin\AppData\Local\Temp\04105c31ae5c279af8caa8d22410391f0b21b4a6fb426852011932f4f063fe32.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "SearchIndexer" /tr '"C:\Users\Admin\AppData\Roaming\SearchIndexer.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4228
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "SearchIndexer" /tr '"C:\Users\Admin\AppData\Roaming\SearchIndexer.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1556
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA0A5.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4148
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1308
      • C:\Users\Admin\AppData\Roaming\SearchIndexer.exe
        "C:\Users\Admin\AppData\Roaming\SearchIndexer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2464

Network

MITRE ATT&CK Enterprise v15

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA0A5.tmp.bat
    Filesize

    157B

    MD5

    a015614aadd5183d5a223c852145d15e

    SHA1

    62924bf483c1f7c3e97f958dcaf51b03001fbd9d

    SHA256

    85cc6b1f9be3fcdfbe748720072a81b3045d9f19d4a6fb68c9e4c786885a7e9b

    SHA512

    d91c2ccf86971f98fdb1caa884bee85e929a8370b35f03a187e329881e71faaa3e08d0e170dcc08f08b23b289b1704747c40d4cdf529987fffa4cf73681df9e0

    Download Submit

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

    130KB

    MD5

    c894a24b791013f77cd90631beb2c5ea

    SHA1

    73ceadbc28aa686461fe3d1afc361a3cb2bee327

    SHA256

    04105c31ae5c279af8caa8d22410391f0b21b4a6fb426852011932f4f063fe32

    SHA512

    50f95867e36485c11f45cb86599770296c5431853770be58bc2e3f4961d19a105ea2c8554754bfe2c7768cef7e92c96ae56cfb3e8df650be579e28c39c43185c

    Download Submit

  • memory/3820-0-0x00000000006A0000-0x00000000006C6000-memory.dmp

    Filesize

    152KB

    Download

  • memory/3820-1-0x00007FF90ECC3000-0x00007FF90ECC5000-memory.dmp

    Filesize

    8KB

    Download

  • memory/3820-2-0x00007FF90ECC0000-0x00007FF90F781000-memory.dmp

    Filesize

    10.8MB

    Download

  • memory/3820-7-0x00007FF90ECC0000-0x00007FF90F781000-memory.dmp

    Filesize

    10.8MB

    Download