Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240729-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240729-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-07-2024 02:10

General

  • Target

    a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe

  • Size

    1.3MB

  • MD5

    c7ea74a05e864d4d67a2fba6be3bb667

  • SHA1

    be91a12de06e01a7e10b1dd514dbedb699f180e4

  • SHA256

    a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90

  • SHA512

    ad03970be59ae08deaf69ffe3078704f9471a76789c040d695a21ab4ffd95377137ab64f19e33f6d9a9fa1b4ec11bd1c66b4a5bbc55dc413cd79aa6376b6a713

  • SSDEEP

    24576:fWljizSawkL2zmeaAit8v1hUw+hqPNKLkFh:+l2akSz+AitK5EAF

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7304169973:AAHQ-YM-Iz4Z3iwfTDSixExgl7INL8UlSEA/sendMessage?chat_id=6845150313

Signatures

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 8 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

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

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

  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

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

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 29 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
    "C:\Users\Admin\AppData\Local\Temp\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4264
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && schtasks /create /tn "a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe" &&START "" "C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2964
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:3128
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:1856
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe" /rl HIGHEST /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:968
        • C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
          "C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:816
          • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\tor-real.exe
            "C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\tor-real.exe" -f "C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\torrc.txt"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:4644
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
            4⤵
            • System Network Configuration Discovery: Wi-Fi Discovery
            • Suspicious use of WriteProcessMemory
            PID:4520
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:1112
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                • Event Triggered Execution: Netsh Helper DLL
                • System Network Configuration Discovery: Wi-Fi Discovery
                PID:3060
              • C:\Windows\system32\findstr.exe
                findstr /R /C:"[ ]:[ ]"
                5⤵
                  PID:2308
              • C:\Windows\SYSTEM32\cmd.exe
                "cmd.exe" /c chcp 65001 && netsh wlan show networks mode=bssid | findstr "SSID BSSID Signal"
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:448
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:3980
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:2756
                  • C:\Windows\system32\findstr.exe
                    findstr "SSID BSSID Signal"
                    5⤵
                      PID:2700
            • C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:720
            • C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2712
            • C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4704

            Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe.log

              Filesize

              847B

              MD5

              3308a84a40841fab7dfec198b3c31af7

              SHA1

              4e7ab6336c0538be5dd7da529c0265b3b6523083

              SHA256

              169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

              SHA512

              97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

            • C:\Users\Admin\AppData\Local\Starlabs\a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90.exe

              Filesize

              1.3MB

              MD5

              c7ea74a05e864d4d67a2fba6be3bb667

              SHA1

              be91a12de06e01a7e10b1dd514dbedb699f180e4

              SHA256

              a01ac4244102e3958296c70d71e3d951f11abcc355458d1918d081587b151d90

              SHA512

              ad03970be59ae08deaf69ffe3078704f9471a76789c040d695a21ab4ffd95377137ab64f19e33f6d9a9fa1b4ec11bd1c66b4a5bbc55dc413cd79aa6376b6a713

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\p.dat

              Filesize

              4B

              MD5

              e3978ba7ecdecc63be5f5bf0281a0ed6

              SHA1

              8bf7f8c44943cdeac5d728efdefdb27d001f5a9f

              SHA256

              60d523c99e38a30e4b889688cf2563ae6b745aa77b41c3d5b7a7fa9606aaa4cf

              SHA512

              c0bdaad1047ccc25bd3e1eaebc47565a995a57ee142c40cb7ea8849d96b6d2c167c9e19b9c28cdf683a2df6c5b640e009e698735f38bbf26c066d7e10cd3df77

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\data\cached-microdesc-consensus.tmp

              Filesize

              2.6MB

              MD5

              a41b7cc22f84ad2ee4fcaf7dc75b88f3

              SHA1

              6513d46298da575af6ca7e02820347463f66d8fd

              SHA256

              215e46f5a655168b094d4ae20154883558466b5009cbc5c1e781029d68311090

              SHA512

              533ef8b3755cd924788dc157b4f78ed3b1c464bf2fd5995a6e7720537ed8b93e6a2cf45b8f9e54aa2b0d8f1720229e8f68093e9327bda53e42fab537a2b0f07b

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\data\cached-microdescs.new

              Filesize

              7.4MB

              MD5

              b3ad29320afe344bb09c5c69898d0f38

              SHA1

              1e1b9165227ad2c13e4b2ac5930817dfd3fa9b73

              SHA256

              77855ebc7749c0896bb119ffefa2f4a93e5aed188e0c32cb324c05e344d1d58e

              SHA512

              4139ff61610fb10e8d271419e069053db6e97ea4379ba949f555a1b2beb01bbd20171222aa94fe92e9d2f5ce4fe549ccffce337c26dfc1a697404a343c638ab0

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\host\hostname

              Filesize

              64B

              MD5

              2da6dfc4c88cc886eabff97c4eaa4cce

              SHA1

              185182872a9a13b3463ba34f6916d664d50c5aaa

              SHA256

              909d416d2051807a2bce31c821356767a2dc9c49d980e4b92d33d8390bc29432

              SHA512

              6fc5db435c2c6422307958cedb5bdbd1be83c89990a5d60cadd865d305a4ac34a7d04d320a71aa8cfba7e13b965ffd8a2da43cf687551dda40846965c8a72f4d

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libcrypto-1_1.dll

              Filesize

              3.5MB

              MD5

              6d48d76a4d1c9b0ff49680349c4d28ae

              SHA1

              1bb3666c16e11eff8f9c3213b20629f02d6a66cb

              SHA256

              3f08728c7a67e4998fbdc7a7cb556d8158efdcdaf0acf75b7789dccace55662d

              SHA512

              09a4fd7b37cf52f6a0c3bb0a7517e2d2439f4af8e03130aed3296d7448585ea5e3c0892e1e1202f658ef2d083ce13c436779e202c39620a70a17b026705c65c9

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libevent-2-1-7.dll

              Filesize

              1.1MB

              MD5

              a3bf8e33948d94d490d4613441685eee

              SHA1

              75ed7f6e2855a497f45b15270c3ad4aed6ad02e2

              SHA256

              91c812a33871e40b264761f1418e37ebfeb750fe61ca00cbcbe9f3769a8bf585

              SHA512

              c20ef2efcacb5f8c7e2464de7fde68bf610ab2e0608ff4daed9bf676996375db99bee7e3f26c5bd6cca63f9b2d889ed5460ec25004130887cd1a90b892be2b28

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libgcc_s_sjlj-1.dll

              Filesize

              1.0MB

              MD5

              bd40ff3d0ce8d338a1fe4501cd8e9a09

              SHA1

              3aae8c33bf0ec9adf5fbf8a361445969de409b49

              SHA256

              ebda776a2a353f8f0690b1c7706b0cdaff3d23e1618515d45e451fc19440501c

              SHA512

              404fb3c107006b832b8e900f6e27873324cd0a7946cdccf4ffeea365a725892d929e8b160379af9782bcd6cfeb4c3c805740e21280b42bb2ce8f39f26792e5a1

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libssl-1_1.dll

              Filesize

              1.1MB

              MD5

              945d225539becc01fbca32e9ff6464f0

              SHA1

              a614eb470defeab01317a73380f44db669100406

              SHA256

              c697434857a039bf27238c105be0487a0c6c611dd36cb1587c3c6b3bf582718a

              SHA512

              409f8f1e6d683a3cbe7954bce37013316dee086cdbd7ecda88acb5d94031cff6166a93b641875116327151823cce747bcf254c0185e0770e2b74b7c5e067bc4a

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libssp-0.dll

              Filesize

              246KB

              MD5

              b77328da7cead5f4623748a70727860d

              SHA1

              13b33722c55cca14025b90060e3227db57bf5327

              SHA256

              46541d9e28c18bc11267630920b97c42f104c258b55e2f62e4a02bcd5f03e0e7

              SHA512

              2f1bd13357078454203092ed5ddc23a8baa5e64202fba1e4f98eacf1c3c184616e527468a96ff36d98b9324426dddfa20b62b38cf95c6f5c0dc32513ebace9e2

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\libwinpthread-1.dll

              Filesize

              512KB

              MD5

              19d7cc4377f3c09d97c6da06fbabc7dc

              SHA1

              3a3ba8f397fb95ed5df22896b2c53a326662fcc9

              SHA256

              228fcfe9ed0574b8da32dd26eaf2f5dbaef0e1bd2535cb9b1635212ccdcbf84d

              SHA512

              23711285352cdec6815b5dd6e295ec50568fab7614706bc8d5328a4a0b62991c54b16126ed9e522471d2367b6f32fa35feb41bfa77b3402680d9a69f53962a4a

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\tor-real.exe

              Filesize

              4.0MB

              MD5

              07244a2c002ffdf1986b454429eace0b

              SHA1

              d7cd121caac2f5989aa68a052f638f82d4566328

              SHA256

              e9522e6912a0124c0a8c9ff9bb3712b474971376a4eb4ca614bb1664a2b4abcf

              SHA512

              4a09db85202723a73703c5926921fef60c3dddae21528a01936987306c5e7937463f94a2f4a922811de1f76621def2a8a597a8b38a719dd24e6ff3d4e07492ca

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\torrc.txt

              Filesize

              226B

              MD5

              e6d1537417fdaced9f4c196f424ce1c3

              SHA1

              615400f839e645f18461ed630bdeb39fea8eef5c

              SHA256

              e0b0abb1887b7136311061b53a63b31708a0a36d140cbcb611c31d64aa21776f

              SHA512

              48c225a13562ef535c8feb53f03423e0e25d23fa6143e5c9ecc38fb9793e5c848d089a97674731be0184af7b9a52523586986f7c858d2fe4feb9cd5424c709df

            • C:\Users\Admin\AppData\Local\ly3zk22kzb\tor\zlib1.dll

              Filesize

              121KB

              MD5

              6f98da9e33cd6f3dd60950413d3638ac

              SHA1

              e630bdf8cebc165aa81464ff20c1d55272d05675

              SHA256

              219d9d5bf0de4c2251439c89dd5f2959ee582e7f9f7d5ff66a29c88753a3a773

              SHA512

              2983faaf7f47a8f79a38122aa617e65e7deddd19ba9a98b62acf17b48e5308099b852f21aaf8ca6fe11e2cc76c36eed7ffa3307877d4e67b1659fe6e4475205c

            • memory/816-116-0x000000001C020000-0x000000001C1C9000-memory.dmp

              Filesize

              1.7MB

            • memory/4264-6-0x00007FF967EC0000-0x00007FF968981000-memory.dmp

              Filesize

              10.8MB

            • memory/4264-1-0x0000000002110000-0x0000000002134000-memory.dmp

              Filesize

              144KB

            • memory/4264-4-0x00007FF967EC0000-0x00007FF968981000-memory.dmp

              Filesize

              10.8MB

            • memory/4264-0-0x00007FF967EC3000-0x00007FF967EC5000-memory.dmp

              Filesize

              8KB

            • memory/4264-7-0x00007FF967EC0000-0x00007FF968981000-memory.dmp

              Filesize

              10.8MB

            • memory/4644-129-0x0000000074F10000-0x0000000074F91000-memory.dmp

              Filesize

              516KB

            • memory/4644-104-0x0000000074DF0000-0x0000000074E16000-memory.dmp

              Filesize

              152KB

            • memory/4644-131-0x0000000074DF0000-0x0000000074E16000-memory.dmp

              Filesize

              152KB

            • memory/4644-132-0x0000000074AF0000-0x0000000074DE6000-memory.dmp

              Filesize

              3.0MB

            • memory/4644-130-0x0000000074E20000-0x0000000074F06000-memory.dmp

              Filesize

              920KB

            • memory/4644-105-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-127-0x00000000750F0000-0x00000000751EB000-memory.dmp

              Filesize

              1004KB

            • memory/4644-125-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-126-0x00000000751F0000-0x0000000075234000-memory.dmp

              Filesize

              272KB

            • memory/4644-128-0x0000000074FA0000-0x00000000750A4000-memory.dmp

              Filesize

              1.0MB

            • memory/4644-103-0x00000000750F0000-0x00000000751EB000-memory.dmp

              Filesize

              1004KB

            • memory/4644-158-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-167-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-179-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-188-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-197-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB

            • memory/4644-207-0x00000000000F0000-0x0000000000504000-memory.dmp

              Filesize

              4.1MB