Analysis

  • max time kernel
    142s
  • 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
    06-01-2025 07:56

General

  • Target

    BLQuote_'PO#385995790.exe

  • Size

    392KB

  • MD5

    837f18b7850efc1d72e08b8296665951

  • SHA1

    f8764fe781498410e66bde0aacb422cc46bd4dd5

  • SHA256

    70dc3a05f4d6138c0a26d6e05d85cadcfddef54db01d6cb48fcb2ff686de2f0a

  • SHA512

    ced510b32a57ff55448c4d8c82fe6fe344214b2477f61a771008cc4b92b4050c249619ff581156d3fb83ad6aded6025900704559d0dc1fadc9f7d04e2b225c99

  • SSDEEP

    6144:1lpSV36ggqbX5FPKXfRKQ/UahtFu1KJSGtX/Ke4ERP68MjtriKFuMfl0oj6:1lpmlbX5xK0QMaLJ7n4aS8MjtDlt6

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

69.174.100.131:6606

Mutex

abkZfsCYRZhk

Attributes
  • delay

    10

  • install

    false

  • install_file

    order.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe
    "C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe"
    1⤵
    • UAC bypass
    • Windows security bypass
    • Checks computer location settings
    • Windows security modification
    • Checks whether UAC is enabled
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4940
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe" -Force
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2804
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1628

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zb0zmdiv.s5z.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1628-4-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/1628-17-0x000000007508E000-0x000000007508F000-memory.dmp

    Filesize

    4KB

  • memory/2804-18-0x000002CCECE80000-0x000002CCECE90000-memory.dmp

    Filesize

    64KB

  • memory/2804-10-0x00007FFA367A0000-0x00007FFA37261000-memory.dmp

    Filesize

    10.8MB

  • memory/2804-15-0x000002CCECDE0000-0x000002CCECE02000-memory.dmp

    Filesize

    136KB

  • memory/2804-16-0x00007FFA367A0000-0x00007FFA37261000-memory.dmp

    Filesize

    10.8MB

  • memory/2804-21-0x00007FFA367A0000-0x00007FFA37261000-memory.dmp

    Filesize

    10.8MB

  • memory/4940-3-0x00007FFA367A0000-0x00007FFA37261000-memory.dmp

    Filesize

    10.8MB

  • memory/4940-2-0x000002674A1C0000-0x000002674A224000-memory.dmp

    Filesize

    400KB

  • memory/4940-0-0x00007FFA367A3000-0x00007FFA367A5000-memory.dmp

    Filesize

    8KB

  • memory/4940-1-0x000002672FD70000-0x000002672FDD6000-memory.dmp

    Filesize

    408KB

  • memory/4940-22-0x00007FFA367A0000-0x00007FFA37261000-memory.dmp

    Filesize

    10.8MB