Overview

overview

10

Static

static

7

b1944fb79d...18.exe

windows7-x64

10

b1944fb79d...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16-06-2024 03:44

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General

  • Target

    b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe

  • Size

    466KB

  • MD5

    b1944fb79d4b12d77d3b57d093b858a5

  • SHA1

    64dd49b8dbb6c35e041122fc56a4981d601662eb

  • SHA256

    af2c1d4af00e47af98e83cba1e368428c6d64c5048a2f2d7bd0ea836de0df7b3

  • SHA512

    5e72a95b5a64e774f4c0446a13438e1552c508312def4047e3bc342c1dc0cbbea562e890d5bd0403bd6f97c3e840fac5564197334077a60d4a0c9d812594eb73

  • SSDEEP

    12288:9JKmDUddoQ+0VhDkUX6Q+wO3yc9pPFH1ZZk:9JKmgddB+0VhDkOF+rCcXFVZW

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealerupx

Malware Config

Extracted

Path

C:\ProgramData\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 038DA1BF 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
  • Renames multiple (524) 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
  • UPX packed file 5 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
  • Suspicious use of SetThreadContext 1 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 20 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\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4572
    • C:\Users\Admin\AppData\Local\Temp\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe
      2⤵
      • 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:2576
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2812
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:2336
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:6140
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:9836
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:9380
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:4636
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
              PID:8188
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              3⤵
                PID:3952
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2948

          Network

          MITRE ATT&CK Enterprise v15

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-038DA1BF.[[email protected]].bot
            Filesize

            2.7MB

            MD5

            5ad3ce82d40550794b5a45d2b6f5dbe6

            SHA1

            97ce3d7d5426f625c2e8aa05d16eda3dfa23e61b

            SHA256

            6726e3caf4c89e0ff5562785cf30fd64a1d490902fb9258657c506c2573aff14

            SHA512

            f2ca72f2e84d0318021f5178286ec9fd1bc1c8549d210d44afa6d7de79d36a5f81f060df3d5da006e5d194ccda7e6e39d4ec680ea4dddba1209b8c21d6232607

            Download Submit

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

            13KB

            MD5

            f011129eab1c62401b922e586425dbfe

            SHA1

            9f4cb63efebce0854f2e44942eaf2c17f62ac964

            SHA256

            f6e181c023e79d1dbce686aefef47cdb3282da3aed136f253a59b6b56c7b1459

            SHA512

            2dc91e0871cf1e464c7e28b44faf95b9c82f4cbd1436924086f86cf78f57727f16286b196e41a2a456822eb77a4043b1a288c4000a7eefbcb8f500c40cf60ded

            Download Submit

          • memory/2576-7525-0x0000000000400000-0x0000000000419000-memory.dmp

            Filesize

            100KB

            Download

          • memory/4572-0-0x0000000000400000-0x0000000000506000-memory.dmp

            Filesize

            1.0MB

            Download

          • memory/4572-1-0x0000000000400000-0x0000000000506000-memory.dmp

            Filesize

            1.0MB

            Download

          • memory/4572-2-0x0000000000400000-0x0000000000506000-memory.dmp

            Filesize

            1.0MB

            Download

          • memory/4572-4-0x00000000024E0000-0x0000000002517000-memory.dmp

            Filesize

            220KB

            Download

          • memory/4572-3-0x0000000000400000-0x0000000000506000-memory.dmp

            Filesize

            1.0MB

            Download

          • memory/4572-6-0x0000000000400000-0x0000000000506000-memory.dmp

            Filesize

            1.0MB

            Download

          • memory/4572-7-0x00000000024E0000-0x0000000002517000-memory.dmp

            Filesize

            220KB

            Download