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Analysis

  • max time kernel
    148s
  • max time network
    189s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/10/2024, 14:11

General

  • Target

    976833d491de30583479494fb8946ea7.exe

  • Size

    5.3MB

  • MD5

    976833d491de30583479494fb8946ea7

  • SHA1

    a8b9321a3fbe582b029c2b35f439966211cba8a4

  • SHA256

    d08285f3f36f0c79df6d4cb82b9b045859d25c96a223c16702b6043ea8950f6e

  • SHA512

    bec2e86948eef70e9b64d01867aa3b3e2d5023bf56333052878fcd61b50cd7147a8a8b463a15bf165310ef7aeca57a2d5247ffd4b047f614d8f6c812eade7385

  • SSDEEP

    98304:atLutWh4NYxtJpkxhG9vPLOqjajvD333yuhGRHW:vOxtJahydjaKu0W

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

18

C2

nuevodcsrat.duckdns.org:8081

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\976833d491de30583479494fb8946ea7.exe
    "C:\Users\Admin\AppData\Local\Temp\976833d491de30583479494fb8946ea7.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2256
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2256-11-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-2-0x00000000005AD000-0x00000000005C5000-memory.dmp

    Filesize

    96KB

  • memory/2256-1-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-4-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-6-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-5-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-3-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-0-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-10-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/2256-7-0x0000000000400000-0x0000000000968000-memory.dmp

    Filesize

    5.4MB

  • memory/4776-13-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/4776-12-0x00000000749BE000-0x00000000749BF000-memory.dmp

    Filesize

    4KB

  • memory/4776-8-0x0000000000870000-0x0000000000882000-memory.dmp

    Filesize

    72KB

  • memory/4776-16-0x0000000005D30000-0x0000000005DCC000-memory.dmp

    Filesize

    624KB

  • memory/4776-17-0x0000000006380000-0x0000000006924000-memory.dmp

    Filesize

    5.6MB

  • memory/4776-18-0x0000000005DD0000-0x0000000005E36000-memory.dmp

    Filesize

    408KB

  • memory/4776-19-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/4776-21-0x00000000749BE000-0x00000000749BF000-memory.dmp

    Filesize

    4KB

  • memory/4776-22-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/4776-23-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB