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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    07/12/2024, 14:28

General

  • Target

    2.exe

  • Size

    48KB

  • MD5

    fc404d7ffa67d7063a0b48b8e99754f6

  • SHA1

    b7f169201014c940e36adbfcefaf9e3c144ff91a

  • SHA256

    55656f594bc657fc544f4d03282bd1e69e15386e04b7c3be3508df8cd6316deb

  • SHA512

    cd9866eef2226d4c23c3a3740bb266ba7b6e3a8370758fe0e5442896f10972bd3b875b251a50b2b2b9a03cdc85ba63ac306593583f45cde869dd660921964f1f

  • SSDEEP

    768:yX6P3UIL2C6L+DiLI7Vf2ki668YbHgeDc2vEgK/JLZVc6KN:yX6PwjkoxzbAUHnkJLZVclN

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

127.0.0.1:59953

fojeweb571-59953.portmap.host:8848

fojeweb571-59953.portmap.host:59953

Mutex

DcRatMutex_qwqdanchunxin

Attributes
  • delay

    1

  • install

    true

  • install_file

    windows defender firewall required.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • 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 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 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\2.exe
    "C:\Users\Admin\AppData\Local\Temp\2.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall required" /tr '"C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:492
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAAC7.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4944
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1140
      • C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe
        "C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:544
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /0
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4144

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpAAC7.tmp.bat

    Filesize

    181B

    MD5

    ce64ac59bccf3b87e7665beb8e51f664

    SHA1

    97661589987012b25bfc8b3ee79faa66a9f93daf

    SHA256

    0e7c841c446cdee75f8b3b11e41297d21982101fcc6b25027c383ca145ae25be

    SHA512

    89072cbb712c63e0b6fb3101c4f8b8e2b19174f2ae52ba710431ac4a47fe5224c2775dc95de874420a101fbc6147f160257f604ff80fd0ea9083c9839cd7c45c

  • C:\Users\Admin\AppData\Local\Temp\windows defender firewall required.exe

    Filesize

    48KB

    MD5

    fc404d7ffa67d7063a0b48b8e99754f6

    SHA1

    b7f169201014c940e36adbfcefaf9e3c144ff91a

    SHA256

    55656f594bc657fc544f4d03282bd1e69e15386e04b7c3be3508df8cd6316deb

    SHA512

    cd9866eef2226d4c23c3a3740bb266ba7b6e3a8370758fe0e5442896f10972bd3b875b251a50b2b2b9a03cdc85ba63ac306593583f45cde869dd660921964f1f

  • memory/2940-1-0x00007FFEEBF73000-0x00007FFEEBF75000-memory.dmp

    Filesize

    8KB

  • memory/2940-0-0x0000000000F60000-0x0000000000F72000-memory.dmp

    Filesize

    72KB

  • memory/2940-2-0x00007FFEEBF70000-0x00007FFEECA32000-memory.dmp

    Filesize

    10.8MB

  • memory/2940-7-0x00007FFEEBF70000-0x00007FFEECA32000-memory.dmp

    Filesize

    10.8MB

  • memory/4144-13-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-14-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-12-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-19-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-24-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-23-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-22-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-21-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-20-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB

  • memory/4144-18-0x00000216323C0000-0x00000216323C1000-memory.dmp

    Filesize

    4KB