Overview

overview

10

Static

static

3

01c07efcfb...a0.exe

windows7-x64

5

01c07efcfb...a0.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2023 10:16

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General

  • Target

    01c07efcfb32bf903701f43a00bb8aa0.exe

  • Size

    400KB

  • MD5

    01c07efcfb32bf903701f43a00bb8aa0

  • SHA1

    4a5ab8eb93ba1013eaebfc11a6a1394e2b7b8746

  • SHA256

    e9e817ad892c6295459c2573c538925bcda3cc36adba56dcf33c8d5217bf0368

  • SHA512

    118dca14143d8ba3d6387c29dba7d7bea5fa40113550b11112e8cb98dde72406c9d6ee3360ce304249cc10a90c3e3062cb556272def02c8e98de211ee2a8bbea

  • SSDEEP

    6144:o0gA0uIV7EXan7ElpY4WCJOEhBevHnNytR6dWa7UFFlT:o0gA037waWpT7hBePctR6dWFFl

Score
10/10
dharmapersistenceransomwarespywarestealer

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 71A032B3 empty 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
  • Renames multiple (498) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 2 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
  • 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 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\01c07efcfb32bf903701f43a00bb8aa0.exe
    "C:\Users\Admin\AppData\Local\Temp\01c07efcfb32bf903701f43a00bb8aa0.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Users\Admin\AppData\Local\Temp\01c07efcfb32bf903701f43a00bb8aa0.exe
      "C:\Users\Admin\AppData\Local\Temp\01c07efcfb32bf903701f43a00bb8aa0.exe" -l
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:3064
      • C:\Users\Admin\AppData\Local\Temp\01c07efcfb32bf903701f43a00bb8aa0.exe
        C:\Users\Admin\AppData\Local\Temp\01c07efcfb32bf903701f43a00bb8aa0.exe
        3⤵
        • 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:1728
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:4796
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            5⤵
              PID:2268
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:6124
          • C:\Windows\system32\cmd.exe
            "C:\Windows\system32\cmd.exe"
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:7036
            • C:\Windows\system32\mode.com
              mode con cp select=1251
              5⤵
                PID:9128
              • C:\Windows\system32\vssadmin.exe
                vssadmin delete shadows /all /quiet
                5⤵
                • Interacts with shadow copies
                PID:6844
            • C:\Windows\System32\mshta.exe
              "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
              4⤵
                PID:9444
              • C:\Windows\System32\mshta.exe
                "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
                4⤵
                  PID:700
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2952

          Network

          MITRE ATT&CK Matrix ATT&CK v13

          Initial Access

          Execution

          Persistence

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Privilege Escalation

          Boot or Logon Autostart Execution

          1
          T1547

          Registry Run Keys / Startup Folder

          1
          T1547.001

          Defense Evasion

          Indicator Removal

          2
          T1070

          File Deletion

          2
          T1070.004

          Modify Registry

          1
          T1112

          Credential Access

          Unsecured Credentials

          1
          T1552

          Credentials In Files

          1
          T1552.001

          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

          Resource Development

          Reconnaissance

          Replay Monitor

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          Downloads

          • C:\Program Files\GroupRepair.avi.id-71A032B3.[[email protected]].java
            Filesize

            1.6MB

            MD5

            009afce6ed765aa99cc0e822010dd47a

            SHA1

            ce2a4b20a26314fb11ca9694c116649e92f0692f

            SHA256

            8b8118f5976fdc123dc499964223035daa41d10ca56afc23541d457bc4d083e6

            SHA512

            8c6e618f05ee413d1282834ab91e79c3dd0e5d6166611f145440807e11483faf84241462f648298ad80a82fef57fa7d53b191a19ff049cb91ef8208d5bd05326

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

            13KB

            MD5

            c4c4a4717e08cf254b10e86051bbd81a

            SHA1

            fce0d454f210cb58f5d010539395e7d3e8feb57b

            SHA256

            388a8fd9a149268b1e08cba04574999f2833fa23aa467eb8b82f4b3e08e2d4f0

            SHA512

            f1b50fe1c2128befa3b13b28e7586d3189a961f2e2a3ef05c83f5bc229e3c8a99c5d2af816f29f26d5c7af7ecad8b4b01efa51fbe26b86f0862ed5d133126206

            Download Submit
          • memory/1728-0-0x0000000000400000-0x000000000041B000-memory.dmp
            Filesize

            108KB

            Download
          • memory/1728-2-0x0000000000400000-0x000000000041B000-memory.dmp
            Filesize

            108KB

            Download
          • memory/1728-3-0x0000000000400000-0x000000000041B000-memory.dmp
            Filesize

            108KB

            Download
          • memory/1728-12-0x0000000000400000-0x000000000041B000-memory.dmp
            Filesize

            108KB

            Download
          • memory/1728-14-0x0000000000400000-0x000000000041B000-memory.dmp
            Filesize

            108KB

            Download