Overview

overview

10

Static

static

10

2024-02-15...ma.exe

windows7-x64

10

2024-02-15...ma.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    15-02-2024 19:07

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General

  • Target

    2024-02-15_ec753315ec4b04a00ae8b5dfb6c45e63_crysis_dharma.exe

  • Size

    92KB

  • MD5

    ec753315ec4b04a00ae8b5dfb6c45e63

  • SHA1

    a903115ffa6f3594ba3034e27d7d296832fb51f8

  • SHA256

    dfedd70ec623c4ed1c0301be4085237905edb6ee317306c3e3652fb29924ef65

  • SHA512

    496a5f7bf2ada536dcabdd58f595388e6ba74df5496033a4324576aa72a1a35ffa738c3dd12147ceb8688808c7a26bd4acc86d94dba0100e906b1d4835def534

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4ArMTFLulwJ9dj2o/GWXmIhtt8:Qw+asqN5aW/hLaTFLUQbH/IIny

Score
10/10
dharmapersistenceransomwarespywarestealer

Malware Config

Extracted

Path

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

Ransom Note
All FILES ENCRYPTED "RSA1024" All YOUR FILES HAVE BEEN ENCRYPTED!!! IF YOU WANT TO RESTORE THEM, WRITE US TO THE E-MAIL [email protected] IN THE LETTER WRITE YOUR ID, YOUR ID 4566CA23 IF YOU ARE NOT ANSWERED, WRITE TO EMAIL: [email protected] YOUR SECRET KEY WILL BE STORED ON A SERVER 7 DAYS, AFTER 7 DAYS IT MAY BE OVERWRITTEN BY OTHER KEYS, DON'T PULL TIME, WAITING YOUR EMAIL FREE DECRYPTION FOR PROOF You can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) DECRYPTION PROCESS: When you make sure of decryption possibility transfer the money to our bitcoin wallet. As soon as we receive the money we will send you: 1. Decryption program. 2. Detailed instruction for decryption. 3. And individual keys for decrypting your files. !WARNING! 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
  • Renames multiple (312) files with added filename extension

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

    ransomware
  • 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 28 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\2024-02-15_ec753315ec4b04a00ae8b5dfb6c45e63_crysis_dharma.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-15_ec753315ec4b04a00ae8b5dfb6c45e63_crysis_dharma.exe"
    1⤵
    • 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:3048
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1404
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2584
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2644
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1596
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:1100
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1244
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:2408
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Modifies Internet Explorer settings
          PID:2564
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2928

      Network

      MITRE ATT&CK Enterprise v15

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPlusWW.msi.id-4566CA23.[[email protected]].html
        Filesize

        10.4MB

        MD5

        34e882a7d5f79d8b8fdf8aebce4f29bf

        SHA1

        32a68d8576f9309f9c5341e4cc4b8f51adc03c54

        SHA256

        487481438508a165d5931d366210b690a8e19be5cea6697d118beb3c4791b0b0

        SHA512

        5dcdc9cde931ac5d943ebe867fadce56fe8830a750612dfbcb7939223436635c69f3d5790054d37d430b5a2adc4a6e84432f0732c2e0ecd4cbb40e286f1d37f0

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

        13KB

        MD5

        95c1302f1f7a92f6ed9ec950fb02bf1a

        SHA1

        1ba801ca8d11543c173e96abff92762b07d4b6b2

        SHA256

        345f51a83c95616154f8b72a3ac2e6e83715e6a79c9d096c163fd539933d015a

        SHA512

        ed0a8ab6934ad7df1bb39502a3761af6d55e38f5589f0384b746f93d14cbea08cab36069efb7eef5cf4275744e8103ce0d4ca0b5732821780d5c98dc2ab6a863

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      • memory/2408-19997-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

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