Overview

overview

10

Static

static

10

9081f9cf98...23.exe

windows7-x64

10

9081f9cf98...23.exe

windows10-2004-x64

10

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
    14-12-2024 11:58

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General

  • Target

    9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe

  • Size

    45KB

  • MD5

    b733e729705bf66c1e5c66d97e247701

  • SHA1

    25eec814abdf1fc6afe621e16aa89c4eb42616b9

  • SHA256

    9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023

  • SHA512

    09b59b8942c1409a03ca4e7f77c6007160af4d557386b766516dba392750869c017d0fd5d6fbbfcbb3e559a70ad42adcb498595df186be180cfc04e921d74320

  • SSDEEP

    768:Nu2/0TckJ26WUsFvgmo2q7MKjPGaG6PIyzjbFgX3iWlcF4S0ru1pYI0sBDZOx:Nu2/0TceH2ZKTkDy3bCXSWlc6SKuRjdM

Score
10/10
asyncratdefaultdiscoveryrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

66.66.146.74:9511

Mutex

nwJFeGdDXcL2

Attributes
  • delay

    3

  • install

    true

  • install_file

    System32.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

    ratasyncrat
  • Asyncrat family
    asyncrat
  • Async RAT payload 1 IoCs
    rat
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

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

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe
    "C:\Users\Admin\AppData\Local\Temp\9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:116
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "System32" /tr '"C:\Users\Admin\AppData\Roaming\System32.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4488
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA2D7.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5032
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5072
      • C:\Users\Admin\AppData\Roaming\System32.exe
        "C:\Users\Admin\AppData\Roaming\System32.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2760

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpA2D7.tmp.bat
    Filesize

    152B

    MD5

    3114c2494218aafaebbe206102249deb

    SHA1

    4af53e020e0f1c9c09d7a9fd6f16342f6c582a44

    SHA256

    2713ad1d5815d779eb08290eb10fdc84f1016bf56fee7d3296a13a1da6f092c1

    SHA512

    50aa4ac27f79be77d6425cfbc932c292d7aa8adc4ebd894c46451d3c5cc1edec4da3b69db0ad41c65109a5558b0764e7433da6b2ce64c25e3b4b77ffbea4c311

    Download Submit

  • C:\Users\Admin\AppData\Roaming\System32.exe
    Filesize

    45KB

    MD5

    b733e729705bf66c1e5c66d97e247701

    SHA1

    25eec814abdf1fc6afe621e16aa89c4eb42616b9

    SHA256

    9081f9cf986ed111d976a07ee26fc2b1b9992301344197d6d3f83fe0d2616023

    SHA512

    09b59b8942c1409a03ca4e7f77c6007160af4d557386b766516dba392750869c017d0fd5d6fbbfcbb3e559a70ad42adcb498595df186be180cfc04e921d74320

    Download Submit

  • memory/2760-13-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/2760-14-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3972-0-0x000000007492E000-0x000000007492F000-memory.dmp

    Filesize

    4KB

    Download

  • memory/3972-1-0x0000000000FA0000-0x0000000000FB2000-memory.dmp

    Filesize

    72KB

    Download

  • memory/3972-2-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

    Download

  • memory/3972-3-0x0000000005980000-0x0000000005A1C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/3972-8-0x0000000074920000-0x00000000750D0000-memory.dmp

    Filesize

    7.7MB

    Download