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Overview

overview

10

Static

static

3

b57980b72e...18.exe

windows7-x64

10

b57980b72e...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    52s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/06/2024, 22:22

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General

  • Target

    b57980b72eb6497212f86353447d2e5f_JaffaCakes118.exe

  • Size

    92KB

  • MD5

    b57980b72eb6497212f86353447d2e5f

  • SHA1

    27b49e51dfde8186287bc936e1197423951fa9a6

  • SHA256

    498df06b0a8d8715e818a582c919bcb5964e5f0eef64bd21f32e52b4ec4861ab

  • SHA512

    c9e19dc2a5845176954599e0c0b9b9c06c941f79d65f86ead0120f0eb6a3fe2976502127f31f5c35fc57304939665f57f24c248eb7418b64694587930fabf4cc

  • SSDEEP

    1536:mBwl+KXpsqN5vlwWYyhY9S4AD8Dsx7Zoygwff/WDb4hkUwqS06ky597:Qw+asqN5aW/hLXZ2bDbCkUK0

Score
10/10
dharmadefense_evasionexecutionimpactpersistenceransomwarespywarestealer

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 E1AE8CD8 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 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 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (517) 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
  • 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 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 16 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\b57980b72eb6497212f86353447d2e5f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b57980b72eb6497212f86353447d2e5f_JaffaCakes118.exe"
    1⤵
    • 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:4508
    • C:\Windows\system32\cmd.exe
      "C:\Windows\system32\cmd.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4340
      • C:\Windows\system32\mode.com
        mode con cp select=1251
        3⤵
          PID:4148
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4900
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:6804
        • C:\Windows\system32\mode.com
          mode con cp select=1251
          3⤵
            PID:4520
          • C:\Windows\system32\vssadmin.exe
            vssadmin delete shadows /all /quiet
            3⤵
            • Interacts with shadow copies
            PID:2396
        • C:\Windows\System32\mshta.exe
          "C:\Windows\System32\mshta.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
          2⤵
            PID:6384
          • C:\Windows\System32\mshta.exe
            "C:\Windows\System32\mshta.exe" "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta"
            2⤵
              PID:4436
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:7284

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.id-E1AE8CD8.[[email protected]].bip
            Filesize

            2.7MB

            MD5

            b6a673a3408581b474f6888f683c3092

            SHA1

            e2be74c64f75be2875c57d26b50f7b0290332e56

            SHA256

            91d095d4ae91c177d09914f40aeb65c522f6fe200507583294e3ba9203c1e10d

            SHA512

            a6fafe3c9fadb9e4a8cba832523c90230493686887ad40042161dee3a6489826614e04bb56298650b9fd2aadb90bcfe6a5f38f0920f07dd1435767300f69d113

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

            13KB

            MD5

            9c6d761c4e61e2e364318fe150803ea9

            SHA1

            557750a00f271e65f8fab641ef620b1b937d9a72

            SHA256

            371ada3ed0f3114240ffe825bf87611f7a8e20bc63da476d81c88fb900c72d29

            SHA512

            b863597cbb0185993285ccb130fec00e870676b8938423d856aea84b56b8611d90152d8166ecb3aef3d4a90167c7e57fbccec0265aad30f4191250fc0c91c80b

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