Resubmissions

21/07/2024, 19:09

240721-xt2j7ssgpm10

21/07/2024, 09:24

240721-lc2cbsxele10

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
    21/07/2024, 09:24

General

  • Target
    SecuriteInfo.com.Trojan.DownLoader45.6497.27763.6707.exe
  • Size 608KB
  • Sample240721-lc2cbsxele
  • SHA256 4c47c69491166259b45ba5ef562a4dd0ad0547e01d0e5111fdbede33c478d798
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Mutex
  • Aakn1515knAakn1515kn!

Attributes
  • c2_url_file

    http://update-checker-status.cc/OCB-Async.txt

  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownLoader45.6497.27763.6707.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownLoader45.6497.27763.6707.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      2⤵
        PID:4452
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1064

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/1064-10-0x0000000000400000-0x0000000000412000-memory.dmp

          memory/1064-16-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1064-15-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1064-14-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1064-12-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1592-3-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1592-6-0x0000000034DB0000-0x0000000034E16000-memory.dmp

          memory/1592-7-0x00000000354C0000-0x0000000035552000-memory.dmp

          memory/1592-8-0x0000000035B10000-0x00000000360B4000-memory.dmp

          memory/1592-5-0x0000000005000000-0x000000000504C000-memory.dmp

          memory/1592-4-0x0000000004EE0000-0x0000000004F12000-memory.dmp

          memory/1592-13-0x0000000074860000-0x0000000075010000-memory.dmp

          memory/1592-0-0x000000007486E000-0x000000007486F000-memory.dmp

          memory/1592-2-0x0000000004E80000-0x0000000004ED2000-memory.dmp

          memory/1592-1-0x00000000004E0000-0x000000000057E000-memory.dmp