Analysis

  • max time kernel
    147s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-04-2024 23:10

General

  • Target

    Svchost.exe

  • Size

    48KB

  • MD5

    2c01d39807db97c023bed5a537afc7d1

  • SHA1

    fb5cae1a4c68278631803413a34182141b85c4a2

  • SHA256

    3f5d4db207164b474b8db3b278f7d9646145181a8211e6c851f1a40aec05a9c4

  • SHA512

    367256dd718596de7b89b0a910a96194dd7514eb83eb8670dea83326af63564dc1e9952142903203e2df876531ea034921c0e82616f7836f0125b8e3026744f7

  • SSDEEP

    768:KuwhFTAY3IQWUe9jqmo2qLfRjDp0pCFUUgPIPJnPCZ01h0bqmHZIUmTT6FkHZBcG:KuwhFTA4/2c5DSC/FPJPCZJbqiy/H2kd

Score
10/10

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

report-dust.gl.at.ply.gg:28329

report-dust.gl.at.ply.gg:8188

Mutex

9VMpESMh922h

Attributes
  • delay

    3

  • 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#.

  • 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).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Svchost.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\SysWOW64\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:1524
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:5028
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9172.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2016
      • C:\Users\Admin\AppData\Roaming\Svchost.exe
        "C:\Users\Admin\AppData\Roaming\Svchost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3616

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Svchost.exe.log

    Filesize

    522B

    MD5

    acc9090417037dfa2a55b46ed86e32b8

    SHA1

    53fa6fb25fb3e88c24d2027aca6ae492b2800a4d

    SHA256

    2412679218bb0a7d05ceee32869bbb223619bde9966c4c460a68304a3367724b

    SHA512

    d51f7085ec147c708f446b9fb6923cd2fb64596d354ed929e125b30ace57c8cb3217589447a36960e5d3aea87a4e48aaa82c7509eced6d6c2cecd71fcfe3697b

  • C:\Users\Admin\AppData\Local\Temp\tmp9172.tmp.bat

    Filesize

    151B

    MD5

    2716c60c7864fd71a835bca7427a0f5d

    SHA1

    a46e8a531f195a74ed42bdf6a898923cc96b6230

    SHA256

    13b7d8ce251b41beb9390867a4765063239a328bf730d363fdd915e021cd2f22

    SHA512

    d1e4675311d21657efc94c7c670900d28e5d0fcc9fbfa7b03eee0a5a6e9c3921050e27f816152485824c2c4eb76f6676c684967a96b2209fcfccd4330b5951eb

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

    Filesize

    48KB

    MD5

    2c01d39807db97c023bed5a537afc7d1

    SHA1

    fb5cae1a4c68278631803413a34182141b85c4a2

    SHA256

    3f5d4db207164b474b8db3b278f7d9646145181a8211e6c851f1a40aec05a9c4

    SHA512

    367256dd718596de7b89b0a910a96194dd7514eb83eb8670dea83326af63564dc1e9952142903203e2df876531ea034921c0e82616f7836f0125b8e3026744f7

  • memory/1620-0-0x00000000005F0000-0x0000000000602000-memory.dmp

    Filesize

    72KB

  • memory/1620-1-0x0000000074EA0000-0x0000000075650000-memory.dmp

    Filesize

    7.7MB

  • memory/1620-2-0x00000000054E0000-0x000000000557C000-memory.dmp

    Filesize

    624KB

  • memory/1620-7-0x0000000074EA0000-0x0000000075650000-memory.dmp

    Filesize

    7.7MB

  • memory/3616-13-0x0000000074E20000-0x00000000755D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3616-14-0x0000000074E20000-0x00000000755D0000-memory.dmp

    Filesize

    7.7MB