Analysis

  • max time kernel
    149s
  • max time network
    104s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250619-en
  • resource tags

    arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    02/07/2025, 03:45

General

  • Target
    2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe
  • Size 537KB
  • Sample250702-ea3daasmt6
  • SHA256 e3a1ce908da07360bd16fa67bcb6f746ecd5928792970f80c7340b5371186df5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Renames multiple (257) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 3 IoCs
  • Executes dropped EXE 3 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3348
      • C:\Users\Admin\AppData\Local\Temp\2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe
        "C:\Users\Admin\AppData\Local\Temp\2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe"
        2⤵
        • Drops file in Drivers directory
        • Adds Run key to start application
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:5780
        • C:\Windows\SysWOW64\net.exe
          net stop "Kingsoft AntiVirus Service"
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:6020
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3104
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a8CEE.bat
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2200
          • C:\Users\Admin\AppData\Local\Temp\2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe
            "C:\Users\Admin\AppData\Local\Temp\2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe"
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:4916
        • C:\Windows\Logo1_.exe
          C:\Windows\Logo1_.exe
          3⤵
          • Drops file in Drivers directory
          • Executes dropped EXE
          • Adds Run key to start application
          • Enumerates connected drives
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3796
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:4576
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
              • System Location Discovery: System Language Discovery
              PID:4900
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5000
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              5⤵
              • System Location Discovery: System Language Discovery
              PID:5064
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c C:\Windows\uninstall\rundl132.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5828
        • C:\Windows\uninstall\rundl132.exe
          C:\Windows\uninstall\rundl132.exe
          3⤵
          • Drops file in Drivers directory
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:788

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          RCX2E47.tmp

          • Path C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\RCX2E47.tmp
          • Size 1.2MB
          • SHA256 01931bb768ca1e7d2ab6102d7e773dd39582b2c898fbb0b47f912b2e57ce4859
          • MD5 SHA1 SHA512 SSDEEP

          RCX2ECB.tmp

          • Path C:\Program Files (x86)\Google\Update\RCX2ECB.tmp
          • Size 87KB
          • SHA256 0fcb3f7b90d2507eca5d7efcde6cff44b4ab71eff3a9124326227822d23f026a
          • MD5 SHA1 SHA512 SSDEEP

          RCX2FAC.tmp

          • Path C:\Program Files (x86)\Microsoft\EdgeCore\132.0.2957.140\RCX2FAC.tmp
          • Size 100KB
          • SHA256 ef0b8b0ed275563279c1bf060c6388d00b38e01590a2a8bce97c7a5e9b2fb834
          • MD5 SHA1 SHA512 SSDEEP

          RCX2F1B.tmp

          • Path C:\Program Files (x86)\Microsoft\Edge\Application\133.0.3065.69\RCX2F1B.tmp
          • Size 115KB
          • SHA256 8bf10cc7e34e52151fb820266da0189d7b18f7ebb18296677231bf9884dfa5ca
          • MD5 SHA1 SHA512 SSDEEP

          RCX224A.tmp

          • Path C:\Program Files\7-Zip\RCX224A.tmp
          • Size 88KB
          • SHA256 2dac60f1e3505f24958cc63645b4018bd967e70d419ce6a54ad5c1054c8324fb
          • MD5 SHA1 SHA512 SSDEEP

          RCX230D.tmp

          • Path C:\Program Files\Java\jdk-1.8\bin\RCX230D.tmp
          • Size 89KB
          • SHA256 50dd0fc733c464eb8847b73b3097b08fa7fb90cc24dae10cd0a05d213f330e11
          • MD5 SHA1 SHA512 SSDEEP

          RCX2502.tmp

          • Path C:\Program Files\Microsoft Office 15\ClientX64\RCX2502.tmp
          • Size 153KB
          • SHA256 803a296e789b38f902091b062724779255f7ca272b91cf20c31a5144d0fe5235
          • MD5 SHA1 SHA512 SSDEEP

          SPREADSHEETCOMPARE.EXE.Exe

          • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE.Exe
          • Size 551KB
          • SHA256 2f84a6f048c729496ce22c23d62c5e40900a9adb32c0886e51110c82d38f5ebb
          • MD5 SHA1 SHA512 SSDEEP

          RCX2546.tmp

          • Path C:\Program Files\Mozilla Firefox\uninstall\RCX2546.tmp
          • Size 97KB
          • SHA256 6fda8cb25a478ce9069c568839d37b9663a6097fde224d7ea0a50568f38d4a12
          • MD5 SHA1 SHA512 SSDEEP

          RCX2578.tmp

          • Path C:\Program Files\VideoLAN\VLC\RCX2578.tmp
          • Size 89KB
          • SHA256 2c6fb9089b5da553cd4fa2f8d94856dfe861f23977f8ce2f672b0f08cc2ebffa
          • MD5 SHA1 SHA512 SSDEEP

          setup.exe.Exe

          • Path C:\ProgramData\Adobe\Setup\{AC76BA86-7AD7-1033-7B44-AC0F074E4100}\setup.exe.Exe
          • Size 542KB
          • SHA256 e9a1a03cb511813e9c287baeaf906505fe67de6fabeda672d0a40341416b6f80
          • MD5 SHA1 SHA512 SSDEEP

          $$a8CEE.bat

          • Path C:\Users\Admin\AppData\Local\Temp\$$a8CEE.bat
          • Size 830B
          • SHA256 6559d93cd2b492afda47e8dc209f5e3e8d65a23e9dc50765be1d2af3208e34fc
          • MD5 SHA1 SHA512

          2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe.exe

          • Path C:\Users\Admin\AppData\Local\Temp\2025-07-02_8a1f0104deba65acff58924cfc8818ab_black-basta_elex_gcleaner_luca-stealer.exe.exe
          • Size 447KB
          • SHA256 cd8e84c1f8d1ee3a7014343e3fb236329d2b67c1ec233ea4b208d99e3f95105b
          • MD5 SHA1 SHA512 SSDEEP

          Logo1_.exe

          • Path C:\Windows\Logo1_.exe
          • Size 89KB
          • SHA256 259c26ad2e5c8028d0469d0df4f563251ca533beaf630327410c1695c9c15113
          • MD5 SHA1 SHA512 SSDEEP

          hosts

          • Path C:\Windows\system32\drivers\etc\hosts
          • Size 842B
          • SHA256 d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e
          • MD5 SHA1 SHA512

          memory/788-17-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/3796-732-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/3796-20-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/3796-1306-0x0000000000400000-0x0000000000429000-memory.dmp

          memory/5780-8-0x0000000000400000-0x0000000000429000-memory.dmp