Overview

overview

10

Static

static

3

2023-05-29...is.exe

windows7-x64

10

2023-05-29...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    135s
  • 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 10:43

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General

  • Target

    2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe

  • Size

    92KB

  • MD5

    7821b1f09ffbf4810840b2f1b326ec77

  • SHA1

    79dfb55c1413f5bd48a8783f8eabcea7981078a5

  • SHA256

    84b3135339c05c2271fff9c90d0d3845c84b4fde8defe62aa8a73d8616b24f8f

  • SHA512

    00f47a82af272923a13185a90c3247cf4fc17e04f79b06e05f2e9b54287ccf9a464c724946eb28ca351861399dc2e2154f67d3db982db3a5cb16c90087800a77

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AvhQFlcykQLaR4zs4+a6qgHR:Qw+asqN5aW/hLJrxxdHR

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
All your files have been encrypted! Don't worry, you can return all your files! If you want to restore them, write to the mail: xcorp@decoymail.mx YOUR ID whisper@mailfence.com Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 3Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ 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.
Emails

xcorp@decoymail.mx

whisper@mailfence.com

Signatures

  • Dharma

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

    ransomwaredharma
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Renames multiple (472) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

    spywarestealer
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-05-29_7821b1f09ffbf4810840b2f1b326ec77_crysis.exe"
    1⤵
    • Checks computer location settings
    • 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:2512
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4556
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:972
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4544
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4676
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5276
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:5768
        • 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:1168
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:6620
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:3440

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Initial Access

          Execution

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Privilege Escalation

          Defense Evasion

          File Deletion

          2
          T1107

          Modify Registry

          1
          T1112

          Credential Access

          Credentials in Files

          1
          T1081

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          Lateral Movement

          Collection

          Data from Local System

          1
          T1005

          Exfiltration

          Command and Control

          Impact

          Inhibit System Recovery

          2
          T1490

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-7B99D14F.[xcorp@decoymail.mx].xCor
            Filesize

            2.9MB

            MD5

            a95e9a1d1fa417bfbdd412bc5d48310c

            SHA1

            9ef94dea116d9be5bb67ebafb26e0d107255cafd

            SHA256

            876ee2afed17ed5892b8dbb6a64e0912afe86c77deb585729932d309876c761c

            SHA512

            847a330a783e45c52dbb2b7d002ae5f2bd9c3c83bbc637229b77b0ade000495ffd63bcdc9a5d84f6c2b054afcaed2c1e670def0b68d4eb823c2ef05dc952efea

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          • C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta
            Filesize

            4KB

            MD5

            cebb5aed5b19c9e5193c0fbdbcce4ab5

            SHA1

            d8ff634e554133e188b1058d8a083d312bd154a6

            SHA256

            ffaad992d1fbcdf5cdb2c01852b66e1285df0cbe71eb2a9d0a4b10f66004d4e2

            SHA512

            f30ea7f85b1b03a607694a371be92ccbcff42353e8f9119f36a755dcf4120951303d1089aeaae714a1945113e0e93b714b7d2b917ccf674d77acc4ef63d9b58d

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

            4KB

            MD5

            cebb5aed5b19c9e5193c0fbdbcce4ab5

            SHA1

            d8ff634e554133e188b1058d8a083d312bd154a6

            SHA256

            ffaad992d1fbcdf5cdb2c01852b66e1285df0cbe71eb2a9d0a4b10f66004d4e2

            SHA512

            f30ea7f85b1b03a607694a371be92ccbcff42353e8f9119f36a755dcf4120951303d1089aeaae714a1945113e0e93b714b7d2b917ccf674d77acc4ef63d9b58d

            Download Submit