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
    29-12-2024 12:18

General

  • Target

    f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe

  • Size

    48KB

  • MD5

    5b0cfae1d974badc23ea32b3ed40ec74

  • SHA1

    78858dd42a2ab3e04f511fc6879e8275780de0e6

  • SHA256

    f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396

  • SHA512

    b48a84130d42dce0e1f4d22b90e559890d2613571132881e6688936084460b875029edf868a245531f48888397ef969dcd57935dcb2ca29a1524bdfefe4f28e1

  • SSDEEP

    768:cD0q7EILuCCj+DiPAsKU89yI//ica8YbLgehjcLvEgK/JDZVc6KN:w0vr4rTopzb0fLnkJDZVclN

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

buyandsell.ddns.net:22

buyandsell.ddns.net:1616

buyandsell.ddns.net:8848

buyandsell.ddns.net:8828

Mutex

DcRatMutex_qwqdanchun

Attributes
  • delay

    1

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • 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).

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
    "C:\Users\Admin\AppData\Local\Temp\f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1256
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:2584
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC832.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1812
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2568
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:4692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC832.tmp.bat

    Filesize

    151B

    MD5

    67eca75520c9c2359b86df7d3f493f17

    SHA1

    11103cbd4a3bbdc22c38822270b466f2c9355259

    SHA256

    a99cb8f756b287e907314acefb344fa7c2d57a66ac8169760c141f659db6fa77

    SHA512

    73ac7902e3de1a346154d8a64f552e56b5a3c683c56e0984baaae259b4257fd7aa64e604fbf3fed143771978bb2ba8d42a5a049267967ea7ca7910f53f05aad4

  • C:\Users\Admin\AppData\Roaming\svchost.exe

    Filesize

    48KB

    MD5

    5b0cfae1d974badc23ea32b3ed40ec74

    SHA1

    78858dd42a2ab3e04f511fc6879e8275780de0e6

    SHA256

    f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396

    SHA512

    b48a84130d42dce0e1f4d22b90e559890d2613571132881e6688936084460b875029edf868a245531f48888397ef969dcd57935dcb2ca29a1524bdfefe4f28e1

  • memory/1756-0-0x00007FFC04313000-0x00007FFC04315000-memory.dmp

    Filesize

    8KB

  • memory/1756-1-0x00000000007F0000-0x0000000000802000-memory.dmp

    Filesize

    72KB

  • memory/1756-2-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

    Filesize

    10.8MB

  • memory/1756-8-0x00007FFC04310000-0x00007FFC04DD1000-memory.dmp

    Filesize

    10.8MB