Overview

overview

10

Static

static

crysis_rxx.vexe.exe

windows7_x64

10

crysis_rxx.vexe.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    22-07-2020 11:36

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General

  • Target

    crysis_rxx.vexe.exe

  • Size

    92KB

  • MD5

    6172709ad4d6c0a3cd305fc14170c41c

  • SHA1

    8913a24a75090f4a2907680570b1e180f037d1d9

  • SHA256

    6985917d29596b66d9bbc745a13d5577110d9b0408719c5559d23dd59a9e4f0b

  • SHA512

    0cc49fb7656a455c8c0fb4a24c95ba9cdb0bab16b9fee69db88e245401e421d3160e591b2a63a097e23151b93e9ef285180d2aeffaac5560c0d400d89c1041c9

Score
10/10
ransomwaredharmapersistencespyware

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\FILES ENCRYPTED.txt

Ransom Note
all your data has been locked us You want to return? write email [email protected] or [email protected]

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
YOUR FILES ARE ENCRYPTED Don't worry,you can return all your files! If you want to restore them, follow this link: email [email protected] YOUR ID If you have not been answered via the link within 12 hours, write to us by e-mail: [email protected] Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Signatures

  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in System32 directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 568 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Drops desktop.ini file(s) 70 IoCs
  • Drops file in Program Files directory 35186 IoCs
  • 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.

    spyware
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Dharma

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

    ransomwaredharma
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\crysis_rxx.vexe.exe
    "C:\Users\Admin\AppData\Local\Temp\crysis_rxx.vexe.exe"
    1⤵
    • Drops file in System32 directory
    • Suspicious behavior: EnumeratesProcesses
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Drops startup file
    • Suspicious use of WriteProcessMemory
    • Adds Run key to start application
    PID:3652
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3076
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3776
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2992
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:256
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:836
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1012
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:1188
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1296
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Modifies service
            • Suspicious use of AdjustPrivilegeToken
            PID:3980

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Persistence

          Modify Existing Service

          1
          T1031

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          Modify Registry

          2
          T1112

          File Deletion

          2
          T1107

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          2
          T1490

          Replay Monitor

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          Downloads

          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Download Submit
          • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Download Submit
          • memory/256-3-0x0000000000000000-mapping.dmp
            Download
          • memory/836-6-0x0000000000000000-mapping.dmp
            Download
          • memory/1012-7-0x0000000000000000-mapping.dmp
            Download
          • memory/1188-8-0x0000000000000000-mapping.dmp
            Download
          • memory/1296-9-0x0000000000000000-mapping.dmp
            Download
          • memory/2992-2-0x0000000000000000-mapping.dmp
            Download
          • memory/3076-0-0x0000000000000000-mapping.dmp
            Download
          • memory/3776-1-0x0000000000000000-mapping.dmp
            Download