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
    150s
  • max time network
    94s
  • 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 [email protected] Write this ID in the title of your message 94953E74 In case of no answer in 24 hours write us to theese e-mails: [email protected] 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.

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:2588
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2648
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2280
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:660
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5540
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:5144
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:4156
        • 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:3836
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:1252
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2764

          Network

          MITRE ATT&CK Enterprise v6

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.id-94953E74.[[email protected]].java
            Filesize

            2.9MB

            MD5

            7fa4f74a82062d37eb85bd2eb831bb31

            SHA1

            41e2c4b7615def63e41a5e587ff2f069280ed7ce

            SHA256

            58a9786ca3a5b3469b613910426f8b668a27c2a3782c289c23744285134283af

            SHA512

            095e01af5f84c3ce5d326dc022f491a8c8a3f49b41b2f14c8b932b0a4fde361f8aa4da7226294d6ab6c8b01733eca2f9d9d2f0e7b0119ecb70de02285bdb6435

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

            13KB

            MD5

            f54fc7f46d8a99b881759627a31ede9c

            SHA1

            3b6db31bfcc15962f4018b82d8495d86645cba56

            SHA256

            52d2741cf927edad0e298e5af75cc98d6c8114485dc2c703b2b19b8ddc515d51

            SHA512

            ec68eab53443e277e77b950674198b17f586cdd75d118b10c10427d05777b3a4059ba247d51d32f0b05e43ff5fa531f2e533ae3925fe4be33f574b917ca3a85b

            Download Submit

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

            13KB

            MD5

            f54fc7f46d8a99b881759627a31ede9c

            SHA1

            3b6db31bfcc15962f4018b82d8495d86645cba56

            SHA256

            52d2741cf927edad0e298e5af75cc98d6c8114485dc2c703b2b19b8ddc515d51

            SHA512

            ec68eab53443e277e77b950674198b17f586cdd75d118b10c10427d05777b3a4059ba247d51d32f0b05e43ff5fa531f2e533ae3925fe4be33f574b917ca3a85b

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          • memory/1252-23525-0x000002592A1A0000-0x000002592A657000-memory.dmp

            Filesize

            4.7MB

            Download

          • memory/3836-23524-0x0000026DEB6B0000-0x0000026DEBB67000-memory.dmp

            Filesize

            4.7MB

            Download