Overview

overview

10

Static

static

10

b1dd75efa7...74.exe

windows7-x64

10

b1dd75efa7...74.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240611-en
  • resource tags

    arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
  • submitted
    19-06-2024 01:40

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General

  • Target

    b1dd75efa7ba920522bd4bfe4a3e5d08138bfc548faff601206b0cc56c9bb674.exe

  • Size

    70KB

  • MD5

    bdf4fc15d73d750fb764b52da65d6ab4

  • SHA1

    51aa0638430b6341498b65a877d1e0940064f1fc

  • SHA256

    b1dd75efa7ba920522bd4bfe4a3e5d08138bfc548faff601206b0cc56c9bb674

  • SHA512

    74b3c5f641b289236189bb38871c1e3962f70a172d1e52dedcf020fe8b843ca9f7ec3591726869fafa12745b61349c8b4807c46c3e6c00b26d9596efbf0d7a29

  • SSDEEP

    1536:eclu3E0ty5RM6Esc4m6cq1ZebmaL4UnpCdsfV1YADir+6S:ju3NURAscOx7wpCKznz

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealerupx

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 FEDCC67F 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 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.) 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 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Detects win.dharma. 2 IoCs
  • Identifies DHARMA ransomware 7 IoCs
  • Renames multiple (312) files with added filename extension

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

    ransomware
  • UPX dump on OEP (original entry point) 2 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.

    spywarestealer
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • 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 3 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\b1dd75efa7ba920522bd4bfe4a3e5d08138bfc548faff601206b0cc56c9bb674.exe
    "C:\Users\Admin\AppData\Local\Temp\b1dd75efa7ba920522bd4bfe4a3e5d08138bfc548faff601206b0cc56c9bb674.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:2872
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2976
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2676
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2552
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3624
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:2104
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:3924
        • 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:3304
        • 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:1688
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2448

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPlusWW.msi.id-FEDCC67F.[[email protected]].boost
        Filesize

        24.4MB

        MD5

        e646f05e4a4863cc708e60c049abfaee

        SHA1

        d92ef473ad9af40132001e70799ca63cd34b0309

        SHA256

        106a11e628639fc5dc16bca18dfdda198044db6e488361a651cb57f94f1360f4

        SHA512

        d959923695fef798ebf3219942b6beb91583af5fbb38d2d17aaa65e0b04491c8385beac8a99ddc02f2a0cbf294618d25649ffb59355c2029e40e0f3fdf38eb95

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

        13KB

        MD5

        1ed8283ad707650d29ddf4541dcd19b6

        SHA1

        7be409ad6a3a090c77dae369a79bb55bf69507b9

        SHA256

        06c039b6a5c54d2b5bfc89d187f89f31b8d1119000d79727dd714b226cefa937

        SHA512

        3743823508766396a0904fb07b92d19ac7a054280f5f47cc27f9f781232b8f7050c7a308ad9978d43d338201d4853d16ebd9223c89cb1e5971fd24180519fd8f

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      • memory/2872-0-0x0000000000400000-0x000000000041D000-memory.dmp

        Filesize

        116KB

        Download

      • memory/2872-14975-0x0000000000400000-0x000000000041D000-memory.dmp

        Filesize

        116KB

        Download

      • memory/3304-20176-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp

        Filesize

        64KB

        Download