Analysis

  • max time kernel
    150s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-05-2024 03:52

General

  • Target

    d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe

  • Size

    1.2MB

  • MD5

    4cdc7aced2193e8bccaa734b2b0f3e1a

  • SHA1

    b7b934a4d5c380f529ec82f3edbe974e2db6aef9

  • SHA256

    d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d

  • SHA512

    6a5409ef065a0b411a9872134b39beb69fe9c19e302e06e1115c1355fc9a8c9fd9f0133cd4c991ce18bcc1a31b0561c0410b01a66dc31626e7197bc2ab340090

  • SSDEEP

    24576:N5xolYQY6elrLMeYSiGTpTLDxxwqQcqOj5eyHox6ZGmAuXE7ZBlbo:oYBtPbVvwqQpoLHontDrlbo

Score
10/10

Malware Config

Signatures

  • 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
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Drops file in Windows directory 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe
    "C:\Users\Admin\AppData\Local\Temp\d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1248
    • \??\c:\users\admin\appdata\local\temp\d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe 
      c:\users\admin\appdata\local\temp\d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe 
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1384
    • C:\Users\Admin\AppData\Local\icsys.icn.exe
      C:\Users\Admin\AppData\Local\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2212
      • \??\c:\windows\system\explorer.exe
        c:\windows\system\explorer.exe
        3⤵
        • 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:932
        • \??\c:\windows\system\spoolsv.exe
          c:\windows\system\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3732
          • \??\c:\windows\system\svchost.exe
            c:\windows\system\svchost.exe
            5⤵
            • 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:872
            • \??\c:\windows\system\spoolsv.exe
              c:\windows\system\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:4608
            • C:\Windows\SysWOW64\at.exe
              at 03:54 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
              6⤵
                PID:4648
              • C:\Windows\SysWOW64\at.exe
                at 03:55 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                6⤵
                  PID:1916
                • C:\Windows\SysWOW64\at.exe
                  at 03:56 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
                  6⤵
                    PID:5100

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Persistence

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Privilege Escalation

        Boot or Logon Autostart Execution

        3
        T1547

        Registry Run Keys / Startup Folder

        2
        T1547.001

        Winlogon Helper DLL

        1
        T1547.004

        Defense Evasion

        Modify Registry

        4
        T1112

        Hide Artifacts

        1
        T1564

        Hidden Files and Directories

        1
        T1564.001

        Discovery

        System Information Discovery

        1
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\d5a27e0aa98accd3eca2870d7f6807dd6d27a955e2fac249421d715f6d82f29d.exe 
          Filesize

          1.0MB

          MD5

          1e02d6aa4a199448719113ae3926afb2

          SHA1

          f1eff6451ced129c0e5c0a510955f234a01158a0

          SHA256

          fb6b1171776554a808c62f4045f5167603f70bf7611de64311ece0624b365397

          SHA512

          7d0f1416beb8c141ee992fe594111042309690c00741dff8f9f31b4652ed6a96b57532780e3169391440076d7ace63966fab526a076adcdc7f7ab389b4d0ff98

        • C:\Users\Admin\AppData\Local\Temp\nsc3401.tmp\InstallOptions.dll
          Filesize

          14KB

          MD5

          325b008aec81e5aaa57096f05d4212b5

          SHA1

          27a2d89747a20305b6518438eff5b9f57f7df5c3

          SHA256

          c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

          SHA512

          18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

        • C:\Users\Admin\AppData\Local\Temp\nsc3401.tmp\LangDLL.dll
          Filesize

          5KB

          MD5

          9384f4007c492d4fa040924f31c00166

          SHA1

          aba37faef30d7c445584c688a0b5638f5db31c7b

          SHA256

          60a964095af1be79f6a99b22212fefe2d16f5a0afd7e707d14394e4143e3f4f5

          SHA512

          68f158887e24302673227adffc688fd3edabf097d7f5410f983e06c6b9c7344ca1d8a45c7fa05553adcc5987993df3a298763477168d4842e554c4eb93b9aaaf

        • C:\Users\Admin\AppData\Local\Temp\nsc3401.tmp\System.dll
          Filesize

          11KB

          MD5

          c17103ae9072a06da581dec998343fc1

          SHA1

          b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

          SHA256

          dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

          SHA512

          d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

        • C:\Users\Admin\AppData\Local\Temp\nsc3401.tmp\ioSpecial.ini
          Filesize

          696B

          MD5

          82d09010d0faa7350cfa0e596e9ff2a4

          SHA1

          9b4e9050b42c65319cd1829d3c0774d071406792

          SHA256

          f16340a0bb2eba1a71faceb109cc40b069b6d6958edbfe1f8219e9c0f5bb71af

          SHA512

          70593f88cb67a5f87b1739467e8154396639367a9e3973594d7ef7a8254e185b48b69a0c930a5527fdde875b6965dc6f00e927e81fb3efb6559dd95e34a82949

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

          224KB

          MD5

          d0a463418d1db8f4b730a166dcba8bd4

          SHA1

          3c102509c90d65a6786fdc48a3bee2e42befceb0

          SHA256

          723694473ab33f6a550a6083cc15f13ac0a7f93ff46d8ac51a9f2ca6996a89bf

          SHA512

          d54accd2c5321236247a872dc9902ebc33770a2ecffe83eab7f43d614d4059ba8fe92bf5ca8dced34ed41cc933072c93de679c9153f87c6cb8778c7e53826dcc

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

          225KB

          MD5

          a9af0c17a7a4e1222a071d880c13f273

          SHA1

          5d46c115504353c3f38471a4f6a8cc409d69a79c

          SHA256

          2910c9486cf54aa06796ea54f8aceaf87f09c75dcea057587ba1f1e718417953

          SHA512

          f9ffe663d61b14376778baf9ee98f928607f174c8defd91c05034220a92aa0904d93bce9a6f0c3011703ae12c4c75d54af4e01cd504edb114bc85d10483f3003

        • C:\Windows\System\explorer.exe
          Filesize

          224KB

          MD5

          d66ee3b82da9e61b84b1d1f123bf9180

          SHA1

          69f5245ea221dd601f0593c2d3a7ced3a4576ded

          SHA256

          bdcd22aac4c2fc7895ee23ed3e7871c484c5753e112f82f84b6fe2baa151156d

          SHA512

          87582d6f03b42635ddcbf7aba871111278caedc8579dc3c72c9f226f865c600406f3fc81abe3b18d6cd3cfa4b0ad9b45fa87109d67747cdbb721f096daf3674f

        • C:\Windows\System\spoolsv.exe
          Filesize

          224KB

          MD5

          404b53ee57abdc3961ce89bb9d4d8057

          SHA1

          cfd04ec037e4becf5bd3302a2fc3b48fb1d0fd21

          SHA256

          a3cef8a3bb03ba0cbb5732cc0e1318e348c05b56f3c7fb20269b91281fc26318

          SHA512

          a27141c1a8595963c178a55bec1d14f403fba0f148ae4c0e82427ba344451b9464d84d5a34ef0facb3f7e09759b5bb21beeff66e99f2ededa04548ed857c82f8

        • C:\Windows\System\svchost.exe
          Filesize

          224KB

          MD5

          1b9e883d53b35c3f4fa970a8a008e128

          SHA1

          a5fc0e8ee4027373b7689c663166f05acc70fa3d

          SHA256

          a49f9d4e185aa7098ae323fb8863f5d844120a42e199832af2d6cd12485df22f

          SHA512

          9468914a352902e47d1d3d80f0d15b7ea2396eade3ba5aba7e5ebb724d5a489462292ea65c6017db429f1c7e8c9675da60ea02f1d48b97247e714139b68abc2b

        • \??\PIPE\atsvc
          MD5

          d41d8cd98f00b204e9800998ecf8427e

          SHA1

          da39a3ee5e6b4b0d3255bfef95601890afd80709

          SHA256

          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

          SHA512

          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

        • memory/1248-61-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB

        • memory/1248-0-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB

        • memory/2212-60-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB

        • memory/3732-59-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB

        • memory/4608-56-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB

        • memory/4608-55-0x0000000000400000-0x0000000000433000-memory.dmp
          Filesize

          204KB