Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-05-2023 11:26

General

  • Target

    whitesnake.exe

  • Size

    344KB

  • MD5

    aec814bf30dd191b641feef457a718ce

  • SHA1

    96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

  • SHA256

    446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

  • SHA512

    fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

  • SSDEEP

    6144:SXRrO+JguvyIs1DkhmgPZw6JXAL5+9bbYZQ4:ir/9m3cYZQ

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot6202531839:AAHT41T-v1F7LRPMrYNhW3IEdF7Ab7I7uTM/sendMessage?chat_id=-1001903439899

Signatures

  • Gurcu, WhiteSnake

    Gurcu is a malware stealer written in C#.

  • Checks computer location settings 2 TTPs 5 IoCs

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

  • Executes dropped EXE 8 IoCs
  • 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 6 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).

  • Program crash 3 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 20 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\whitesnake.exe
    "C:\Users\Admin\AppData\Local\Temp\whitesnake.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "whitesnake" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\whitesnake.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3880
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:4420
        • C:\Windows\system32\PING.EXE
          ping 127.0.0.1
          3⤵
          • Runs ping.exe
          PID:3540
        • C:\Windows\system32\schtasks.exe
          schtasks /create /tn "whitesnake" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe" /rl HIGHEST /f
          3⤵
          • Creates scheduled task(s)
          PID:4656
        • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
          "C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:4892
          • C:\Windows\System32\tar.exe
            "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp7D91.tmp" -C "C:\Users\Admin\AppData\Local\8lxyt4fm8n"
            4⤵
              PID:3056
            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
              "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
              4⤵
              • Executes dropped EXE
              PID:3912
      • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
        C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
        1⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:1864
        • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
          "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
          2⤵
          • Executes dropped EXE
          PID:4248
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 1864 -s 2856
          2⤵
          • Program crash
          PID:3556
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -pss -s 184 -p 1864 -ip 1864
        1⤵
          PID:3200
        • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
          C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
          1⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3464
          • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
            "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
            2⤵
            • Executes dropped EXE
            PID:3720
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 3464 -s 2032
            2⤵
            • Program crash
            PID:3788
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -pss -s 440 -p 3464 -ip 3464
          1⤵
            PID:4496
          • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
            C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe
            1⤵
            • Checks computer location settings
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:4740
            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe
              "C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt"
              2⤵
              • Executes dropped EXE
              PID:1516
            • C:\Windows\system32\WerFault.exe
              C:\Windows\system32\WerFault.exe -u -p 4740 -s 1956
              2⤵
              • Program crash
              PID:3320
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -pss -s 512 -p 4740 -ip 4740
            1⤵
              PID:4180

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdesc-consensus.tmp

              Filesize

              2.2MB

              MD5

              62afa111550d866293bdce98af512bdd

              SHA1

              4e3e9aa9e83a85c0f65b3ad7266714ea77cbb29e

              SHA256

              b36daecbb46e063f62321cf5b666062a5085b21fbcedb5f237bea19627b7f782

              SHA512

              593f2a71121ccc3952034eae19b32f6f9644f5109d1c6573adc9c27bba60195df8bd610420d3d5d674faba0ab79cdb14ce5624a0bc5d59acefebc21ec9af5efd

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\data\cached-microdescs.new

              Filesize

              5.6MB

              MD5

              fa6ca6c94728013dd37b3954d48540cf

              SHA1

              95f7c4dadb967c6ebd5994cd0eb2917eaa4522ae

              SHA256

              15d7cb5e1a3d36d4d2e97f4502756face670bb2a1b84c84a7f89971ff836b274

              SHA512

              372d0b93b61420d6f40a7520c92b04009450740c24af2b49b1207f62ef16bebb740ed5ee1a30d230b75b8659b252e4be8fb79f8e30d304d737e04cb5fda20e3e

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\host\hostname

              Filesize

              64B

              MD5

              bb3c2eb0a36e0b538b1e52d39ffa691a

              SHA1

              b06ae180daf7f7e34628254e5302e6d2cbc428b8

              SHA256

              61607f44106fac76f7e9c33cbdbe0ddb50b5765af47a4ee4227239ce0dc1c917

              SHA512

              1c86db877f23587153ea48bb2a88b249f0a79cb4af5eb04f3dc6c2086010625e14467d79734a08896ec4de57f1a9e064678669082b6c237468d26e3e3d5263c4

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\port.dat

              Filesize

              4B

              MD5

              d3630410c51e60941a9001a46871070e

              SHA1

              5e9e35e4d3778985fa3ed033259d0b5b2e68c34c

              SHA256

              61d8c465a85f889fd0d3a1d9d243dfa3fd2ef0282bc59b36499ccc63d92c1b47

              SHA512

              3da4ac108489cfcc5ab675dde41ad611c653e835666239999833fe26f0ca3095dac6c74a2c8060203655174e5b081fff9213fb134a3a0dfe04b7d41c7d93c5a7

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

              Filesize

              7.4MB

              MD5

              88590909765350c0d70c6c34b1f31dd2

              SHA1

              129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

              SHA256

              46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

              SHA512

              a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

              Filesize

              7.4MB

              MD5

              88590909765350c0d70c6c34b1f31dd2

              SHA1

              129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

              SHA256

              46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

              SHA512

              a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

              Filesize

              7.4MB

              MD5

              88590909765350c0d70c6c34b1f31dd2

              SHA1

              129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

              SHA256

              46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

              SHA512

              a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

              Filesize

              7.4MB

              MD5

              88590909765350c0d70c6c34b1f31dd2

              SHA1

              129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

              SHA256

              46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

              SHA512

              a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\tor\tor.exe

              Filesize

              7.4MB

              MD5

              88590909765350c0d70c6c34b1f31dd2

              SHA1

              129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

              SHA256

              46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

              SHA512

              a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

            • C:\Users\Admin\AppData\Local\8lxyt4fm8n\torrc.txt

              Filesize

              218B

              MD5

              3a83ec78b95b9599062a1b83ea39521e

              SHA1

              fe8d57da08b3579724f4d464ed4f4202c23e2b5d

              SHA256

              2e014afc9447f861aab58d65c2eb80acf5daefe62477b02836757726d299e624

              SHA512

              2a4685019917318e87e75ee98ed47de04f3a1d52350d4a40f7585a2a0575e0113b23f285a7be98d6408a9bc240eb56d6a5dac1da6cbcb9a1b6b16e2c634a335f

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

              Filesize

              847B

              MD5

              3308a84a40841fab7dfec198b3c31af7

              SHA1

              4e7ab6336c0538be5dd7da529c0265b3b6523083

              SHA256

              169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

              SHA512

              97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

            • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe

              Filesize

              344KB

              MD5

              aec814bf30dd191b641feef457a718ce

              SHA1

              96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

              SHA256

              446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

              SHA512

              fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

            • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe

              Filesize

              344KB

              MD5

              aec814bf30dd191b641feef457a718ce

              SHA1

              96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

              SHA256

              446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

              SHA512

              fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

            • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe

              Filesize

              344KB

              MD5

              aec814bf30dd191b641feef457a718ce

              SHA1

              96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

              SHA256

              446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

              SHA512

              fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

            • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe

              Filesize

              344KB

              MD5

              aec814bf30dd191b641feef457a718ce

              SHA1

              96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

              SHA256

              446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

              SHA512

              fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

            • C:\Users\Admin\AppData\Local\Nvidia\whitesnake.exe

              Filesize

              344KB

              MD5

              aec814bf30dd191b641feef457a718ce

              SHA1

              96c2bea5b416d10a2dae60acd2b7f9c7cebb8115

              SHA256

              446278b00e672276ebd77b7a20356f9fdad4aeb0add39d714de87f3c6b17af89

              SHA512

              fdd89bcb64728e88e5b9453f3c93c011fa2f22a5947a3d380ac2768184126c27b0e97556ace1d736cfe4da20281b5c710af78f55460948d5561c979021f5b6b0

            • C:\Users\Admin\AppData\Local\Temp\tmp7D91.tmp

              Filesize

              13.3MB

              MD5

              89d2d5811c1aff539bb355f15f3ddad0

              SHA1

              5bb3577c25b6d323d927200c48cd184a3e27c873

              SHA256

              b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

              SHA512

              39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

            • memory/1864-162-0x00000134C8430000-0x00000134C8440000-memory.dmp

              Filesize

              64KB

            • memory/4448-133-0x00000186F4750000-0x00000186F47AC000-memory.dmp

              Filesize

              368KB

            • memory/4448-136-0x00000186F4BA0000-0x00000186F4BB0000-memory.dmp

              Filesize

              64KB

            • memory/4892-143-0x000002DDAE180000-0x000002DDAE190000-memory.dmp

              Filesize

              64KB