Overview

overview

10

Static

static

3

bug32.exe

windows7-x64

10

bug32.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22-11-2024 14:48

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General

  • Target

    bug32.exe

  • Size

    92KB

  • MD5

    ba67dd5ab7d6061704f2903573cec303

  • SHA1

    f7ca4a5d4c8d24083b86ff0a5b102ad68e0c9e34

  • SHA256

    6b1f4df924fb0e5067df18dfc5063d409f3bf2ee0d14b381b3f583e0d0da3ae5

  • SHA512

    291ab3acb7e7619243baced30ceed24b65f76a7edc9e2d1eb875ebdf590b3321c40ec1a3d44c109ab6a8a29ad43268780fcdd0448227f8f0c62ba7bbaadc7452

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AaEsY/ZlZI7teK7FiuiqhxVXf8lvLte23q9AH2:Qw+asqN5aW/hLnsqfcteK7VJAztb3qs

Score
10/10
dharmacredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarespywarestealer

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 CEE4C21F 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
  • Dharma family
    dharma
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (309) files with added filename extension

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

    ransomware
  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Drops startup file 5 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 3 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
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • 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\bug32.exe
    "C:\Users\Admin\AppData\Local\Temp\bug32.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
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2300
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:2808
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2884
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2548
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:3528
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:1616
        • 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:3968
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
          • Loads dropped DLL
          • Modifies Internet Explorer settings
          PID:1920
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:276

      Network

      MITRE ATT&CK Enterprise v15

      Reconnaissance

      Resource Development

      Initial Access

      Execution

      Windows Management Instrumentation

      1
      T1047

      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

      Direct Volume Access

      1
      T1006

      Indicator Removal

      2
      T1070

      File Deletion

      2
      T1070.004

      Modify Registry

      2
      T1112

      Credential Access

      Credentials from Password Stores

      2
      T1555

      Credentials from Web Browsers

      1
      T1555.003

      Windows Credential Manager

      1
      T1555.004

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      Browser Information Discovery

      1
      T1217

      System Information Discovery

      1
      T1082

      System Location Discovery

      1
      T1614

      System Language Discovery

      1
      T1614.001

      Lateral Movement

      Collection

      Data from Local System

      1
      T1005

      Command and Control

      Exfiltration

      Impact

      Inhibit System Recovery

      2
      T1490

      Replay Monitor

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      Downloads

      • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\OWOW64WW.cab.id-CEE4C21F.[[email protected]].combo
        Filesize

        23.5MB

        MD5

        becbb436bc43e2eaa40759e537b3e142

        SHA1

        74783284d401dc5658a96217412e3ad264eea8de

        SHA256

        8cf17473f1bab28b09ac5827e0763f73a539c37f6e5a124ee7925a80cafd3f82

        SHA512

        5a029b38a29be77c73829892c454a1cd2ac3e762d26b3f6d02a5b0aa3ad507010484e410ca305aa9263b3fe656d76994fa69d7a564b7dac6334b5f3f70f38c93

        Download Submit

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

        13KB

        MD5

        1232a2efc2e3ee8b34e0e0e1183f6fca

        SHA1

        a989a9fa020e5f8ba9955e8b75fb7c35b7fd7c46

        SHA256

        292b061fbbdd7bca255f8002e39ea43799b0e498cfe9d2be84ff3282c12d3ebf

        SHA512

        b42c388799f4ced220878eb7efa832f8444ae00731c7b2d55af88cce0cb48e8ddaaff52326941d2f382f4982b7151c66a0051180e5ae73dca5d10740f7b01fc4

        Download Submit

      • \PROGRA~1\COMMON~1\MICROS~1\OFFICE14\Cultures\OFFICE.ODF
        Filesize

        4.1MB

        MD5

        c3da214ab5fb2e66e61fd8f63f72839f

        SHA1

        0ad2b19a1a59ec94d373d2c865431300c849902b

        SHA256

        9f4845358945756d231b58d2be9dddd1f436df1955daa79ab04149cf1289f4ef

        SHA512

        84f8035d685d517a0e5de019e61674288c087a48a5e01e1b9315e51ff9a4aa84fa72eb2487fd3357d5a1006a4e7c7ef343707347f997e1b66964b9e6c47c64f7

        Download Submit

      • \PROGRA~1\MICROS~2\Office14\1033\GrooveIntlResource.dll
        Filesize

        8.4MB

        MD5

        48019bd50a809545c202053313cd4b57

        SHA1

        60c431499a9f225334032a2f13b825f7a9da8680

        SHA256

        f9d97706a48caead3004a695b57c252103a67f0be66ba58807b1ed430bbb74fd

        SHA512

        f0ab826b0ee57de7909041671462b87f52fa2837501d1f4fa85d159aadab77f340b12cf5f97ab8a4c1b1d6428c35561e9118f6bb5b3c86628bd93b3d8b7198aa

        Download Submit

      • \PROGRA~1\MICROS~2\Office14\GROOVEEX.DLL
        Filesize

        6.4MB

        MD5

        a71a930e1e61e73da97423bdb95ce2d8

        SHA1

        8779f17ce0f68aef21969e39e1d84019bea04118

        SHA256

        80f65cbcf64bf5de2c957c83af1a41e9fd624bb88c873a4204ccde77ed428be7

        SHA512

        6f36d227d8328b411a8a7eb776eb49de7a4dcb8e18df5caccbf27114b56a79c327b1c9b13bb2d18ff6ca3738bb3a13d819c9b5693385d0a4fe385586f03beac5

        Download Submit

      • memory/1920-20301-0x000007FFFFF90000-0x000007FFFFFA0000-memory.dmp

        Filesize

        64KB

        Download