Overview

overview

10

Static

static

1

2023-04-13...is.exe

windows7-x64

10

2023-04-13...is.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    152s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-04-2023 02:52

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General

  • Target

    2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_crysis.exe

  • Size

    92KB

  • MD5

    bf6e423769b1dc31dafc847cbfe9076a

  • SHA1

    50db0bde95a3d257498ffc30250636d753c7ea58

  • SHA256

    7af890c71121d682203be3b23497272f4338cdc27f5af49c41f8275d582e85e1

  • SHA512

    a985faf89341ea70e1106f27b9e253660cc90ecf0dae17fc2f3a208bd5dd43a7b8bf7fd1e69a8f9b730208154a0a6ead53900d1e315138e9e2ed8a492791d347

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4A6GHr/gk1juEGsQJcntrUbSnmp8zaUbBa:Qw+asqN5aW/hLQOhZksGcB8yC8zacBa

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! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail prancesonce@tuta.io Write this ID in the title of your message 0F4E93A0 In case of no answer in 24 hours write us to theese e-mails: prancesonce@cock.li You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 5 files for free decryption. The total size of files must be less than 10Mb (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

prancesonce@tuta.io

prancesonce@cock.li

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
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    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). Likely ransomware behaviour.

  • 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\2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_crysis.exe
    "C:\Users\Admin\AppData\Local\Temp\2023-04-13_bf6e423769b1dc31dafc847cbfe9076a_crysis.exe"
    1⤵
    • Modifies extensions of user files
    • 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:4740
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:3032
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:3772
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1868
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1432
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:6000
        • 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:4512
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:5692
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:100

          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\AppvIsvSubsystems32.dll.id-0F4E93A0.[prancesonce@tuta.io].java
            Filesize

            2.7MB

            MD5

            36bc484d01f1507d4011531d333c33a4

            SHA1

            6b0baa30d61713b8795698ee6b7355d9b719a3d7

            SHA256

            785ddc50899ffc16b1e996b435d3b7a311c15fa25f47565ba18998a851083e59

            SHA512

            6fe338208f12b38094234112444d78207810b715a367db2e74d71277f814e04287c0c49fa77532ad7694d5ba2327b03f5b228772017d200c211ce6bc7e086e24

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

            13KB

            MD5

            e32772db281e0dcfacb7f0ae4c6d92c1

            SHA1

            96675fcd57b368bc80f3a928260c2e246b94f4c9

            SHA256

            e655bee0fbd6cc00b06bd4b00f12248674124851265357aaea6ea6e3aa12b4d2

            SHA512

            356fbde217c5ead57279391e1180ca7eabca69e1a5f3d2fb07c1655d83df2420adb1c9cbda386bbd0aeeeea17d20bd22fed8cd04a71d52da2be3b239f0144256

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

            13KB

            MD5

            e32772db281e0dcfacb7f0ae4c6d92c1

            SHA1

            96675fcd57b368bc80f3a928260c2e246b94f4c9

            SHA256

            e655bee0fbd6cc00b06bd4b00f12248674124851265357aaea6ea6e3aa12b4d2

            SHA512

            356fbde217c5ead57279391e1180ca7eabca69e1a5f3d2fb07c1655d83df2420adb1c9cbda386bbd0aeeeea17d20bd22fed8cd04a71d52da2be3b239f0144256

            Download Submit
          • memory/4512-23461-0x0000020EFC350000-0x0000020EFCAA7000-memory.dmp
            Filesize

            7.3MB

            Download
          • memory/5692-23462-0x000001DAA6E50000-0x000001DAA75A7000-memory.dmp
            Filesize

            7.3MB

            Download