Overview

overview

10

Static

static

7

b1944fb79d...18.exe

windows7-x64

10

b1944fb79d...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 812159DB 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 (311) 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
  • UPX packed file 6 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
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 33 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:2932
    • C:\Users\Admin\AppData\Local\Temp\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\b1944fb79d4b12d77d3b57d093b858a5_JaffaCakes118.exe
      2⤵
      • 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:2000
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2516
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          4⤵
            PID:2504
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            4⤵
            • Interacts with shadow copies
            PID:1696
        • C:\Windows\system32\cmd.exe
          "C:\Windows\system32\cmd.exe"
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:3940
          • C:\Windows\system32\mode.com
            mode con cp select=1251
            4⤵
              PID:3440
            • C:\Windows\system32\vssadmin.exe
              vssadmin delete shadows /all /quiet
              4⤵
              • Interacts with shadow copies
              PID:3532
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:3384
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            3⤵
            • Modifies Internet Explorer settings
            PID:3432
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2568

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      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

      Indicator Removal

      2
      T1070

      File Deletion

      2
      T1070.004

      Modify Registry

      2
      T1112

      Credential Access

      Unsecured Credentials

      1
      T1552

      Credentials In Files

      1
      T1552.001

      Discovery

      System Information Discovery

      1
      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:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPlusWW.msi.id-812159DB.[[email protected]].bot
        Filesize

        24.4MB

        MD5

        4af5c19df3cdb3752778f9afcfd8a08d

        SHA1

        b6cd99e1c5c92ecc8170c6322842355edcaf3f9b

        SHA256

        160f34ae517b95217e96967f056139183527f92ffeef41cf492682a09921c547

        SHA512

        024f655fc8031bed868b020fcc36522b344fa4bffc041085a34fbdfe52c4d2f26987d330c53eefe1ef05c6d4da8ac82f532e620d2c2a3359208288b04509448f

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

        13KB

        MD5

        076b8de0fd38d9d00d4815a299541e69

        SHA1

        57c6fc3685128af7b8de61064e30160146a0eb20

        SHA256

        1c313b58862823b9fe58ad471ede89d449de808ec4d4f056908458454f724015

        SHA512

        0aa202926310c7e72f6bf9bffcd914bb6e29e696e51934a4e88c6f29cf097a56fc304091383ff73abfb5ffdc6e37b705bb63214889dc9b8cb25a0345d7d5f859

        Download Submit
      • memory/2000-13450-0x0000000000400000-0x0000000000419000-memory.dmp
        Filesize

        100KB

        Download
      • memory/2932-3-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-4-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-5-0x0000000002B50000-0x0000000002B87000-memory.dmp
        Filesize

        220KB

        Download
      • memory/2932-9-0x0000000003AC0000-0x0000000003BC6000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-12-0x0000000002B50000-0x0000000002B87000-memory.dmp
        Filesize

        220KB

        Download
      • memory/2932-11-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-0-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-2-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/2932-1-0x0000000000400000-0x0000000000506000-memory.dmp
        Filesize

        1.0MB

        Download
      • memory/3432-20282-0x000007FFFFF80000-0x000007FFFFF90000-memory.dmp
        Filesize

        64KB

        Download