Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-06-2024 14:25

General

  • Target

    85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe

  • Size

    119KB

  • MD5

    b37058a1a6fa72cf11d4bda54e15790a

  • SHA1

    b8663b93cac0b88168d207fd648da5c2f9b775de

  • SHA256

    85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0

  • SHA512

    4848057ad580943a96e57713ca721ad3052001e8fd428651b08034592596f14e9396d0de970bdbffc552e104189aa81dfe7723bd13003637659198ec38fed818

  • SSDEEP

    3072:taz/aDPGTGEFCgfOUs9b1sYbj9udwbtkJjT17WfCSL:ttyfOUs9b1jEE

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7010862109:AAH0zvA1le9OK12jNFxe-ZZxxdtz25wyhrs/sendMessage?chat_id=6011786716

Signatures

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 10 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.

  • 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.

  • 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 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 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\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
    "C:\Users\Admin\AppData\Local\Temp\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && timeout /t 3 > NUL && schtasks /create /tn "85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" &&START "" "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3824
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:1784
        • C:\Windows\system32\timeout.exe
          timeout /t 3
          3⤵
          • Delays execution with timeout.exe
          PID:224
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe" /rl HIGHEST /f
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1780
        • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
          "C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          • outlook_office_path
          • outlook_win_path
          PID:2500
          • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\tor-real.exe
            "C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\tor-real.exe" -f "C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\torrc.txt"
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            PID:4512
          • C:\Windows\SYSTEM32\cmd.exe
            "cmd.exe" /c chcp 65001 && netsh wlan show profiles|findstr /R /C:"[ ]:[ ]"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4756
            • C:\Windows\system32\chcp.com
              chcp 65001
              5⤵
                PID:3640
              • C:\Windows\system32\netsh.exe
                netsh wlan show profiles
                5⤵
                • Event Triggered Execution: Netsh Helper DLL
                PID:4836
              • C:\Windows\system32\findstr.exe
                findstr /R /C:"[ ]:[ ]"
                5⤵
                  PID:996
              • 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:1956
                • C:\Windows\system32\chcp.com
                  chcp 65001
                  5⤵
                    PID:4816
                  • C:\Windows\system32\netsh.exe
                    netsh wlan show networks mode=bssid
                    5⤵
                    • Event Triggered Execution: Netsh Helper DLL
                    PID:5032
                  • C:\Windows\system32\findstr.exe
                    findstr "SSID BSSID Signal"
                    5⤵
                      PID:2180
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4512,i,1400471177590024469,587385956640537806,262144 --variations-seed-version --mojo-platform-channel-handle=4632 /prefetch:8
              1⤵
                PID:2504
              • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of AdjustPrivilegeToken
                PID:3604
              • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe
                1⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of SetWindowsHookEx
                PID:3008

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe.log

                Filesize

                1KB

                MD5

                fc1be6f3f52d5c841af91f8fc3f790cb

                SHA1

                ac79b4229e0a0ce378ae22fc6104748c5f234511

                SHA256

                6da862f7c7feffca99cd58712ece93928c6ca6aed617f5d8c10a4718eaa2a910

                SHA512

                2f46165017309ee1a0c1b23e30a71e52e86ad8933e2649bf58c3f4628c5aa75659f5b8f6be32c2882f220b2f3ff2fd50d8766bf0a3708c94c2c634c051a05ea6

              • C:\Users\Admin\AppData\Local\RobloxSecurity\85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0.exe

                Filesize

                119KB

                MD5

                b37058a1a6fa72cf11d4bda54e15790a

                SHA1

                b8663b93cac0b88168d207fd648da5c2f9b775de

                SHA256

                85b1ce3f619ebeb3799acff17ee1356a7f3911e0b95f29b24111ae03fa2a03a0

                SHA512

                4848057ad580943a96e57713ca721ad3052001e8fd428651b08034592596f14e9396d0de970bdbffc552e104189aa81dfe7723bd13003637659198ec38fed818

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\p.dat

                Filesize

                4B

                MD5

                8f4d94fa779cb6b74225a9e26c700a39

                SHA1

                80a4902788e1944cd55bda5a009839a4b0405e43

                SHA256

                a1913ec75b7ac63d6d9f31ac6e0a9bed13200bf2a82b5fd5a9d0bbf19f570cf6

                SHA512

                e09b02044dc8862d07e5acd9c048676f48cf7d9df02effec41fd8b6007adb4d43125d366c1c6d48f4f92152c90d538ceffc492df316e94ebfb71c5eb86e46bfd

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\data\cached-microdesc-consensus.tmp

                Filesize

                2.4MB

                MD5

                60c4ca563162415bbd43ec1d8b5a0506

                SHA1

                e78f5260fdd117e60077eb765b82463c9ad8fd45

                SHA256

                98e1687713cb0ff71420efd43928d632a166843a6e63328b6d950f51467ce5e3

                SHA512

                4d5a71aed992d1e15b487a234bb714229b923dcaa83ae215fca5eaae181d22f57fe68be4a6a2e19b1a956e559a824a1ee098e329948ab521933a34e5dc86325a

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\data\cached-microdescs.new

                Filesize

                7.6MB

                MD5

                f4a55b5ee8603a3eaa7297a2397da620

                SHA1

                ea25c14cc1e43068d6f51df192d008f032d91578

                SHA256

                9fc0e590493442e213b3dd7d6e14a83f5ffea2ee96b9ed0014000fd5d7b8a546

                SHA512

                d4f4a78f7f289e69a1041eafc31c007e3737707d44dae14e8dc79cc1da2e183c7fe9c3c0769ce0221503439e9e0f702b85cd0d0c4d67307b9fff9eab8153d118

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\host\hostname

                Filesize

                64B

                MD5

                745cd6c2b90bff70caaf8c38558f36e6

                SHA1

                9aa4f6e3f09c40a170b75af0e0c0fb76102d191b

                SHA256

                9ed7476fad1f98395ad27b9e84fe70f9d831ffeb6e2251c22ee7dbd6b0697037

                SHA512

                a5a03540d301399f5a282c08546a1456ce89b77cbaa37e9243030ca988afde02e5760b71b41cf71ba4978174881238a768aeca44d77d4589566e7151e3c93c74

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libcrypto-1_1.dll

                Filesize

                3.5MB

                MD5

                6d48d76a4d1c9b0ff49680349c4d28ae

                SHA1

                1bb3666c16e11eff8f9c3213b20629f02d6a66cb

                SHA256

                3f08728c7a67e4998fbdc7a7cb556d8158efdcdaf0acf75b7789dccace55662d

                SHA512

                09a4fd7b37cf52f6a0c3bb0a7517e2d2439f4af8e03130aed3296d7448585ea5e3c0892e1e1202f658ef2d083ce13c436779e202c39620a70a17b026705c65c9

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libevent-2-1-7.dll

                Filesize

                1.1MB

                MD5

                a3bf8e33948d94d490d4613441685eee

                SHA1

                75ed7f6e2855a497f45b15270c3ad4aed6ad02e2

                SHA256

                91c812a33871e40b264761f1418e37ebfeb750fe61ca00cbcbe9f3769a8bf585

                SHA512

                c20ef2efcacb5f8c7e2464de7fde68bf610ab2e0608ff4daed9bf676996375db99bee7e3f26c5bd6cca63f9b2d889ed5460ec25004130887cd1a90b892be2b28

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libgcc_s_sjlj-1.dll

                Filesize

                1.0MB

                MD5

                bd40ff3d0ce8d338a1fe4501cd8e9a09

                SHA1

                3aae8c33bf0ec9adf5fbf8a361445969de409b49

                SHA256

                ebda776a2a353f8f0690b1c7706b0cdaff3d23e1618515d45e451fc19440501c

                SHA512

                404fb3c107006b832b8e900f6e27873324cd0a7946cdccf4ffeea365a725892d929e8b160379af9782bcd6cfeb4c3c805740e21280b42bb2ce8f39f26792e5a1

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libssl-1_1.dll

                Filesize

                1.1MB

                MD5

                945d225539becc01fbca32e9ff6464f0

                SHA1

                a614eb470defeab01317a73380f44db669100406

                SHA256

                c697434857a039bf27238c105be0487a0c6c611dd36cb1587c3c6b3bf582718a

                SHA512

                409f8f1e6d683a3cbe7954bce37013316dee086cdbd7ecda88acb5d94031cff6166a93b641875116327151823cce747bcf254c0185e0770e2b74b7c5e067bc4a

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libssp-0.dll

                Filesize

                246KB

                MD5

                b77328da7cead5f4623748a70727860d

                SHA1

                13b33722c55cca14025b90060e3227db57bf5327

                SHA256

                46541d9e28c18bc11267630920b97c42f104c258b55e2f62e4a02bcd5f03e0e7

                SHA512

                2f1bd13357078454203092ed5ddc23a8baa5e64202fba1e4f98eacf1c3c184616e527468a96ff36d98b9324426dddfa20b62b38cf95c6f5c0dc32513ebace9e2

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\libwinpthread-1.dll

                Filesize

                512KB

                MD5

                19d7cc4377f3c09d97c6da06fbabc7dc

                SHA1

                3a3ba8f397fb95ed5df22896b2c53a326662fcc9

                SHA256

                228fcfe9ed0574b8da32dd26eaf2f5dbaef0e1bd2535cb9b1635212ccdcbf84d

                SHA512

                23711285352cdec6815b5dd6e295ec50568fab7614706bc8d5328a4a0b62991c54b16126ed9e522471d2367b6f32fa35feb41bfa77b3402680d9a69f53962a4a

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\tor-real.exe

                Filesize

                4.0MB

                MD5

                07244a2c002ffdf1986b454429eace0b

                SHA1

                d7cd121caac2f5989aa68a052f638f82d4566328

                SHA256

                e9522e6912a0124c0a8c9ff9bb3712b474971376a4eb4ca614bb1664a2b4abcf

                SHA512

                4a09db85202723a73703c5926921fef60c3dddae21528a01936987306c5e7937463f94a2f4a922811de1f76621def2a8a597a8b38a719dd24e6ff3d4e07492ca

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\torrc.txt

                Filesize

                226B

                MD5

                64740a3edeb323187f9393b61c236adc

                SHA1

                eaac170efca70f48edc0f4bc0f8f115288831928

                SHA256

                bd50687dad9e4ad69d32f596b6a67875334f3b434c4c2bfd867991169c5ae0bc

                SHA512

                0d2c36567da1ee7fbd856f3a83bf36849f2d0b12e9623e8b990f8af898e1723b87fba0cb6a5957d8e3d4042e8a4575489f7ef2a46d937c32e840e31977ee4395

              • C:\Users\Admin\AppData\Local\zxqaiiy6en\tor\zlib1.dll

                Filesize

                121KB

                MD5

                6f98da9e33cd6f3dd60950413d3638ac

                SHA1

                e630bdf8cebc165aa81464ff20c1d55272d05675

                SHA256

                219d9d5bf0de4c2251439c89dd5f2959ee582e7f9f7d5ff66a29c88753a3a773

                SHA512

                2983faaf7f47a8f79a38122aa617e65e7deddd19ba9a98b62acf17b48e5308099b852f21aaf8ca6fe11e2cc76c36eed7ffa3307877d4e67b1659fe6e4475205c

              • memory/1284-0-0x00007FFAE93C3000-0x00007FFAE93C5000-memory.dmp

                Filesize

                8KB

              • memory/1284-1-0x000001801EA90000-0x000001801EAB4000-memory.dmp

                Filesize

                144KB

              • memory/1284-2-0x00007FFAE93C0000-0x00007FFAE9E81000-memory.dmp

                Filesize

                10.8MB

              • memory/1284-6-0x00007FFAE93C0000-0x00007FFAE9E81000-memory.dmp

                Filesize

                10.8MB

              • memory/4512-123-0x00000000752A0000-0x0000000075386000-memory.dmp

                Filesize

                920KB

              • memory/4512-105-0x0000000075390000-0x00000000753B6000-memory.dmp

                Filesize

                152KB

              • memory/4512-118-0x00000000755A0000-0x000000007569B000-memory.dmp

                Filesize

                1004KB

              • memory/4512-122-0x0000000075390000-0x00000000753B6000-memory.dmp

                Filesize

                152KB

              • memory/4512-121-0x00000000753C0000-0x0000000075441000-memory.dmp

                Filesize

                516KB

              • memory/4512-120-0x0000000075450000-0x0000000075554000-memory.dmp

                Filesize

                1.0MB

              • memory/4512-119-0x00000000756A0000-0x00000000756E4000-memory.dmp

                Filesize

                272KB

              • memory/4512-117-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-125-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-124-0x0000000074FA0000-0x0000000075296000-memory.dmp

                Filesize

                3.0MB

              • memory/4512-106-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-153-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-104-0x00000000755A0000-0x000000007569B000-memory.dmp

                Filesize

                1004KB

              • memory/4512-169-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-183-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-192-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB

              • memory/4512-200-0x0000000000C10000-0x0000000001024000-memory.dmp

                Filesize

                4.1MB