Resubmissions

03/08/2024, 03:16

240803-dse52awejb10

03/08/2024, 03:15

240803-dr286swdrd10

03/08/2024, 03:15

240803-drxcxs1fnj10

03/08/2024, 03:14

240803-drpcba1fmq10

03/08/2024, 03:14

240803-drh6aswdqd10

03/08/2024, 03:12

240803-dqhs5swdmc3

03/08/2024, 03:08

240803-dm7m4awcpe10

03/08/2024, 03:07

240803-dmj7sswcne10

Analysis

  • max time kernel
    1618s
  • max time network
    1589s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    03/08/2024, 03:15

General

  • Target
    rBlbqI2.exe
  • Size 291KB
  • Sample240803-dr286swdrd
  • SHA256 df049efbfa7ac0b76c8daff5d792c550c7a7a24f6e9e887d01a01013c9caa763
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

  • Renames multiple (1540) files with added filename extension

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

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe
    "C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe"
    1⤵
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3976
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\rBlbqI2.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2316

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        DisplayLanguageNames.en_US_POSIX.txt.zemblax

        • Path C:\Program Files (x86)\Common Files\Adobe\Reader\DC\Linguistics\LanguageNames2\DisplayLanguageNames.en_US_POSIX.txt.zemblax
        • Size 32KB
        • SHA256 15fcb7c77cf60f287e9c81ec8053a9cdd1aa8bc0413734e8a1499a9de635c6d0
        • MD5 SHA1 SHA512 SSDEEP

        invalid32x32.gif.zemblax

        • Path C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\invalid32x32.gif.zemblax
        • Size 160B
        • SHA256 8bdfa6a5b7de345cf0d4fe0e9c17d8b0e9db26d58b05b1b2ebbb3a05a068ff28
        • MD5 SHA1 SHA512

        drpbx.exe

        • Path C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
        • Size 291KB
        • SHA256 df049efbfa7ac0b76c8daff5d792c550c7a7a24f6e9e887d01a01013c9caa763
        • MD5 SHA1 SHA512 SSDEEP

        settings.dat.zemblax

        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.AccountsControl_cw5n1h2txyewy\Settings\settings.dat.zemblax
        • Size 8KB
        • SHA256 e94c37d7dc8dd954bfee8e340abc882bc361baf0d3771ed442ed625a3bcb0174
        • MD5 SHA1 SHA512 SSDEEP

        BroadcastMsg_1722612834.txt.zemblax

        • Path C:\Users\Admin\AppData\Local\Temp\BroadcastMsg_1722612834.txt.zemblax
        • Size 16B
        • SHA256 33088cb514406f31e3d96a92c03294121ee9f24e176f7062625c2b36bee7a325
        • MD5 SHA1 SHA512

        memory/2316-1895-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-344-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-180-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-183-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-184-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-182-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-804-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-608-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-343-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-1894-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-607-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-605-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-606-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-603-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-604-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-602-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/2316-345-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-41-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-15-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-54-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-52-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-49-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-47-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-45-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-43-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-56-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-39-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-37-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-35-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-33-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-31-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-29-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-27-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-25-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-23-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-21-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-19-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-17-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-51-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-13-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-11-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-7-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-6-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-58-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-61-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-62-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-181-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-66-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-68-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-168-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-165-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-70-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-64-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-9-0x0000000005270000-0x00000000052A4000-memory.dmp

        memory/3976-5-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-4-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-1-0x0000000074750000-0x0000000074D01000-memory.dmp

        memory/3976-0-0x0000000074751000-0x0000000074752000-memory.dmp