Overview

overview

10

Static

static

10

040ef285cd...00.exe

windows7-x64

10

040ef285cd...00.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    54s
  • max time network
    61s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2025, 20:06

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General

  • Target

    040ef285cdbca1ab4b3ceaeac8f0ace87aca7d2147123a1359f27a3039b0b700.exe

  • Size

    47KB

  • MD5

    ee9bd2b3d64511b880fcbd8ad23c71fa

  • SHA1

    8c2cc8c959621c4543c9aa111367adb77f1ec697

  • SHA256

    040ef285cdbca1ab4b3ceaeac8f0ace87aca7d2147123a1359f27a3039b0b700

  • SHA512

    47c90a3a2093796a8b324fd76f92bc6f5a3975272f88305352d3e9c4fcd543f2c2421d7ed0d95e9df0cda33e6fb58b2a10c3a400bdeb6c1cb4912d50970623ec

  • SSDEEP

    768:EuwvNT8E2mLWU3FvZmo2q7JGiMQsCmPIaggsbw0bRKoyqIShOVqTZxSbKBDZ8x:EuwvNT8xk27fQsCPaggCbRKoNLOVqTZQ

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

3.27.199.84:9182

Mutex

gRLpFG01LHh3

Attributes
  • delay

    3

  • install

    true

  • install_file

    RuntimeBrokerSvc.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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

    discovery
  • Delays execution with timeout.exe 1 IoCs
    defense_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 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\040ef285cdbca1ab4b3ceaeac8f0ace87aca7d2147123a1359f27a3039b0b700.exe
    "C:\Users\Admin\AppData\Local\Temp\040ef285cdbca1ab4b3ceaeac8f0ace87aca7d2147123a1359f27a3039b0b700.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1544
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBrokerSvc" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBrokerSvc.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5112
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBrokerSvc" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBrokerSvc.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4012
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8FFB.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5060
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4048
      • C:\Users\Admin\AppData\Roaming\RuntimeBrokerSvc.exe
        "C:\Users\Admin\AppData\Roaming\RuntimeBrokerSvc.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp8FFB.tmp.bat
    Filesize

    160B

    MD5

    8fe6124f998f094c587e12ae7193e7f8

    SHA1

    d961ac3bfd50a0465ce4c689e67949d1c574b0b1

    SHA256

    5e72c196c09ac53a98418ef7969c06e1203910207ec109b006bcf22651f0f170

    SHA512

    70e7ba66222bb7614f97d5d871bd5aa391e0840db4018cb04d215721c48561ebb5e14b7437bbbae00796a95f840eb6f17402c81ee3c4b5e321073b5701b6e20b

    Download Submit

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

    47KB

    MD5

    ee9bd2b3d64511b880fcbd8ad23c71fa

    SHA1

    8c2cc8c959621c4543c9aa111367adb77f1ec697

    SHA256

    040ef285cdbca1ab4b3ceaeac8f0ace87aca7d2147123a1359f27a3039b0b700

    SHA512

    47c90a3a2093796a8b324fd76f92bc6f5a3975272f88305352d3e9c4fcd543f2c2421d7ed0d95e9df0cda33e6fb58b2a10c3a400bdeb6c1cb4912d50970623ec

    Download Submit

  • memory/1544-0-0x00000000751EE000-0x00000000751EF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/1544-1-0x0000000000140000-0x0000000000152000-memory.dmp

    Filesize

    72KB

    Download

  • memory/1544-2-0x00000000751E0000-0x0000000075990000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1544-3-0x00000000049D0000-0x0000000004A36000-memory.dmp

    Filesize

    408KB

    Download

  • memory/1544-4-0x0000000004E60000-0x0000000004EFC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/1544-9-0x00000000751E0000-0x0000000075990000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2436-14-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2436-15-0x0000000075150000-0x0000000075900000-memory.dmp

    Filesize

    7.7MB

    Download