Overview

overview

10

Static

static

10

5ef95b3882...16.exe

windows7-x64

10

5ef95b3882...16.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-12-2024 03:59

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General

  • Target

    5ef95b38828c6d99c6cc41f377373c7b1c6d5b48c6f63ceeb2b103daec226716.exe

  • Size

    45KB

  • MD5

    b2fa91466cc86844ab15094d1977ef6d

  • SHA1

    1b906455b8a22316777379b36bc686c3f02079cd

  • SHA256

    5ef95b38828c6d99c6cc41f377373c7b1c6d5b48c6f63ceeb2b103daec226716

  • SHA512

    1652caa85ce027a627796ba8cb83dbbb2f8a3900c3c366d7ee6609808334048a5c0dc69c62e798b95879c891c4de49e6fef3b7e7bd4605646a464a72e43dd785

  • SSDEEP

    768:1umC1TVMOvtWUNb2nmo2qztKjPGaG6PIyzjbFgX3imGmJUxjhR5UBDZ/x:1umC1TVd22kKTkDy3bCXSwujn5id/x

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

127.0.0.1:1337

127.0.0.1:16335

127.0.0.1:11195

18.119.130.176:6606

18.119.130.176:7707

18.119.130.176:8808

18.119.130.176:1337

18.119.130.176:16335

18.119.130.176:11195

2.tcp.ngrok.io:6606

2.tcp.ngrok.io:7707

2.tcp.ngrok.io:8808

2.tcp.ngrok.io:1337

2.tcp.ngrok.io:16335

2.tcp.ngrok.io:11195

8.tcp.ngrok.io:6606

8.tcp.ngrok.io:7707
Mutex

Yp91dpbmYOAB

Attributes
  • delay

    3

  • install

    true

  • install_file

    RtlUpdate.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
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ef95b38828c6d99c6cc41f377373c7b1c6d5b48c6f63ceeb2b103daec226716.exe
    "C:\Users\Admin\AppData\Local\Temp\5ef95b38828c6d99c6cc41f377373c7b1c6d5b48c6f63ceeb2b103daec226716.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4600
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RtlUpdate" /tr '"C:\Users\Admin\AppData\Roaming\RtlUpdate.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2288
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "RtlUpdate" /tr '"C:\Users\Admin\AppData\Roaming\RtlUpdate.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:672
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp81E2.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1680
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:660
      • C:\Users\Admin\AppData\Roaming\RtlUpdate.exe
        "C:\Users\Admin\AppData\Roaming\RtlUpdate.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:4840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp81E2.tmp.bat
    Filesize

    153B

    MD5

    51e379a221016533176e9cf1a7d252e6

    SHA1

    863115c7fc3fd9f140ab47e3606a50c3775500f8

    SHA256

    12856fbaaed459e94ed83315ed57f8458dacd6ce55b308325dd42620b3cbc816

    SHA512

    b3a7d1a72e427fe2fe7acc12f8282f0307fd5bd1b67e1bc6321e845f5d596d9a559d4e32b9432cfa68f7f8ebb4d5fcf3204f1dbcc6264cb9105b5dd6f955d9a5

    Download Submit

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

    45KB

    MD5

    b2fa91466cc86844ab15094d1977ef6d

    SHA1

    1b906455b8a22316777379b36bc686c3f02079cd

    SHA256

    5ef95b38828c6d99c6cc41f377373c7b1c6d5b48c6f63ceeb2b103daec226716

    SHA512

    1652caa85ce027a627796ba8cb83dbbb2f8a3900c3c366d7ee6609808334048a5c0dc69c62e798b95879c891c4de49e6fef3b7e7bd4605646a464a72e43dd785

    Download Submit

  • memory/4600-0-0x0000000074BAE000-0x0000000074BAF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4600-1-0x0000000000420000-0x0000000000432000-memory.dmp

    Filesize

    72KB

    Download

  • memory/4600-2-0x0000000074BA0000-0x0000000075350000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4600-3-0x0000000004E30000-0x0000000004ECC000-memory.dmp

    Filesize

    624KB

    Download

  • memory/4600-8-0x0000000074BA0000-0x0000000075350000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4840-13-0x0000000074BA0000-0x0000000075350000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/4840-14-0x0000000074BA0000-0x0000000075350000-memory.dmp

    Filesize

    7.7MB

    Download