Overview

overview

10

Static

static

10

da37d1762b...f8.exe

windows7-x64

10

da37d1762b...f8.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    59s
  • max time network
    60s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2024 19:46

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General

  • Target

    da37d1762b3a6ce5c7a161f57e85cd9c240fb8f4706507acd1d77d8b704ffcf8.exe

  • Size

    47KB

  • MD5

    4cf1f5023c04a7f09a438b70a7924e0a

  • SHA1

    0192bc4d55a2a1ab92f3a33227cefb4dcf3a2330

  • SHA256

    da37d1762b3a6ce5c7a161f57e85cd9c240fb8f4706507acd1d77d8b704ffcf8

  • SHA512

    f65121c835efd40fb494ec6ed13467cf425833b445fb8f784578785f1ab742bd4ba34be57d4e61065727a18d26a545c0350ad1afed54fe293d3eeca061ecb097

  • SSDEEP

    768:4u08VTBRlc6nWUbjelmo2qj7iFRB7AfMPIpB+nwdL80bCo/GQRLN384x7ZGS5Bh3:4u08VTBncr28gByxpcwdLvbCaLlBiCqc

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

127.0.0.1:4782

127.0.0.1:25329

misterzeee-21127.portmap.host:6606

misterzeee-21127.portmap.host:7707

misterzeee-21127.portmap.host:8808

misterzeee-21127.portmap.host:4782

misterzeee-21127.portmap.host:25329
Mutex

pcPq8IaM233R

Attributes
  • delay

    3

  • install

    true

  • install_file

    AntiVirus.exe

  • install_folder

    %Temp%

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 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\da37d1762b3a6ce5c7a161f57e85cd9c240fb8f4706507acd1d77d8b704ffcf8.exe
    "C:\Users\Admin\AppData\Local\Temp\da37d1762b3a6ce5c7a161f57e85cd9c240fb8f4706507acd1d77d8b704ffcf8.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:412
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "AntiVirus" /tr '"C:\Users\Admin\AppData\Local\Temp\AntiVirus.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "AntiVirus" /tr '"C:\Users\Admin\AppData\Local\Temp\AntiVirus.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3848
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E82.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3028
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4528
      • C:\Users\Admin\AppData\Local\Temp\AntiVirus.exe
        "C:\Users\Admin\AppData\Local\Temp\AntiVirus.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2040

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\AntiVirus.exe
    Filesize

    47KB

    MD5

    4cf1f5023c04a7f09a438b70a7924e0a

    SHA1

    0192bc4d55a2a1ab92f3a33227cefb4dcf3a2330

    SHA256

    da37d1762b3a6ce5c7a161f57e85cd9c240fb8f4706507acd1d77d8b704ffcf8

    SHA512

    f65121c835efd40fb494ec6ed13467cf425833b445fb8f784578785f1ab742bd4ba34be57d4e61065727a18d26a545c0350ad1afed54fe293d3eeca061ecb097

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\tmp9E82.tmp.bat
    Filesize

    156B

    MD5

    3a9844cd51a8bf304c5af42a1377f868

    SHA1

    e6ce53da9464c39a83fe93abdc31c37734164b61

    SHA256

    8e03b94f120c5515052625d7c72d6fee17d0d28fc1b163c69ce9ed1927a08807

    SHA512

    22f041a3755eb522fdfff3b4b25f9cf0dd7d082f14e0a8ba54a4f3b0e87ba7510ee49cc1d07f709678531213a6f1dc6becdea797a2112bb8153f2502a365a446

    Download Submit

  • memory/412-0-0x0000000074C8E000-0x0000000074C8F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/412-1-0x0000000000F50000-0x0000000000F62000-memory.dmp

    Filesize

    72KB

    Download

  • memory/412-2-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/412-3-0x0000000005930000-0x00000000059CC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/412-9-0x0000000074C80000-0x0000000075430000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2040-13-0x0000000074C00000-0x00000000753B0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2040-14-0x0000000074C00000-0x00000000753B0000-memory.dmp

    Filesize

    7.7MB

    Download