Analysis

  • max time kernel
    152s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220331-en
  • submitted
    27-03-2022 20:58

General

  • Target

    2893c68ee07c67772d480554fc54e1a232dd0584847011e948e8e7cbc002c240.exe

  • Size

    148KB

  • MD5

    898ad2ee345417f25e145cfab64eaf2b

  • SHA1

    301e6504eb53429070654845b2667ddd5dbda4d8

  • SHA256

    2893c68ee07c67772d480554fc54e1a232dd0584847011e948e8e7cbc002c240

  • SHA512

    fb07d4ee7dfa7c71a5651b555abc790480cbf58ce83c6bf34e41b830103d6523baa6ee4b2a11a229d561b17a4d7eaffca3491bcf97aa191497d5c75d666a44cb

Malware Config

Signatures

  • Dharma

    Dharma is a ransomware that uses security software installation to hide malicious activities.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 5 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) 64 IoCs
  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2893c68ee07c67772d480554fc54e1a232dd0584847011e948e8e7cbc002c240.exe
    "C:\Users\Admin\AppData\Local\Temp\2893c68ee07c67772d480554fc54e1a232dd0584847011e948e8e7cbc002c240.exe"
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1940
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1892
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:884
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1356
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
          PID:1608
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:576

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/884-57-0x0000000000000000-mapping.dmp

      • memory/1356-58-0x0000000000000000-mapping.dmp

      • memory/1608-62-0x0000000000000000-mapping.dmp

      • memory/1892-56-0x0000000000000000-mapping.dmp

      • memory/1940-54-0x000000000340B000-0x000000000341E000-memory.dmp

        Filesize

        76KB

      • memory/1940-55-0x0000000075AA1000-0x0000000075AA3000-memory.dmp

        Filesize

        8KB

      • memory/1940-60-0x0000000000220000-0x0000000000239000-memory.dmp

        Filesize

        100KB

      • memory/1940-59-0x000000000340B000-0x000000000341E000-memory.dmp

        Filesize

        76KB

      • memory/1940-61-0x0000000000400000-0x0000000002FAF000-memory.dmp

        Filesize

        43.7MB