Overview

overview

10

Static

static

10

55394ffc99...0N.exe

windows7-x64

10

55394ffc99...0N.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    119s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-08-2024 05:18

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General

  • Target

    55394ffc99ace9a97d0c529a2be317c0N.exe

  • Size

    47KB

  • MD5

    55394ffc99ace9a97d0c529a2be317c0

  • SHA1

    0427b719d52fa112112e3b8001cf2fb5a69c5798

  • SHA256

    92847b5aee61516d9a8469dfe9b9d05692834f9f2da8ade00b2cc0721c8a217b

  • SHA512

    e5fe23e7e6e699a1e45578c1ce5170651dac33b7b17596a89845a29b1dd732665c8a08c070b959d5ff473d91de3ca84f4adc498f051d5452223b27731d32ce6e

  • SSDEEP

    768:AuIndTsErkZTWU/lPhmo2qbJKLKsrcDo117iPINEwf8P6H61fitbRU2pDV8dHwya:AuIndTsXB2OKL3Go1pNEwks2WbRvDx+4

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:8000

127.0.0.1:11735

0.tcp.eu.ngrok.io:11735:6606

0.tcp.eu.ngrok.io:11735:7707

0.tcp.eu.ngrok.io:11735:8808

0.tcp.eu.ngrok.io:11735:8000

0.tcp.eu.ngrok.io:11735:11735
Mutex

H3X4yAaCJZBT

Attributes
  • delay

    6

  • install

    true

  • install_file

    test.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).

  • 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
    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 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55394ffc99ace9a97d0c529a2be317c0N.exe
    "C:\Users\Admin\AppData\Local\Temp\55394ffc99ace9a97d0c529a2be317c0N.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:60
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "test" /tr '"C:\Users\Admin\AppData\Roaming\test.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1904
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA76B.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:552
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4576
      • C:\Users\Admin\AppData\Roaming\test.exe
        "C:\Users\Admin\AppData\Roaming\test.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:1036

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA76B.tmp.bat
    Filesize

    148B

    MD5

    12e04f9d86160000f9893aca1df8c3e6

    SHA1

    e83966df0d94d2870bd839c1341edf7c9c76d06c

    SHA256

    8fa565b228f99285da89bb2419d953bcdfed5cd9357dc5ed522e4a7f7bf58793

    SHA512

    8713ef701187013c242e2e0c4c030466cdbdfbfdcf5891bfd5a84b8734ee17b1c2676d6319764a1eac0aaaee5e827381b54a48def42ffa31a9230aacf51e0a09

    Download Submit

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

    47KB

    MD5

    55394ffc99ace9a97d0c529a2be317c0

    SHA1

    0427b719d52fa112112e3b8001cf2fb5a69c5798

    SHA256

    92847b5aee61516d9a8469dfe9b9d05692834f9f2da8ade00b2cc0721c8a217b

    SHA512

    e5fe23e7e6e699a1e45578c1ce5170651dac33b7b17596a89845a29b1dd732665c8a08c070b959d5ff473d91de3ca84f4adc498f051d5452223b27731d32ce6e

    Download Submit

  • memory/60-0-0x00000000748FE000-0x00000000748FF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/60-1-0x0000000000AE0000-0x0000000000AF2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/60-2-0x00000000748F0000-0x00000000750A0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/60-3-0x0000000005520000-0x00000000055BC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/60-9-0x00000000748F0000-0x00000000750A0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1036-13-0x0000000074850000-0x0000000075000000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/1036-14-0x0000000074850000-0x0000000075000000-memory.dmp

    Filesize

    7.7MB

    Download