Overview

overview

10

Static

static

10

1.exe

windows7-x64

10

1.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    154s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-01-2023 18:56

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General

  • Target

    1.exe

  • Size

    211KB

  • MD5

    511e849a593b7787b1387b56f12d8c05

  • SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

  • SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

  • SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

  • SSDEEP

    6144:Bia1gMHOPDWIhID8X/4DQFu/U3buRKlemZ9DnGAetTsB+Q+:BIMH06cID84DQFu/U3buRKlemZ9DnGAI

Score
10/10
buranzeppelinpersistenceransomware

Malware Config

Extracted

Path

C:\!!! ALL YOUR FILES ARE ENCRYPTED !!!.TXT

Family

buran

Ransom Note
!!! ALL YOUR FILES ARE ENCRYPTED !!! All your files, documents, photos, databases and other important files are encrypted. You are not able to decrypt it by yourself! The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. To be sure we have the decryptor and it works you can send an email: [email protected] and decrypt one file for free. But this file should be of not valuable! Do you really want to restore your files? Write to email: [email protected] Reserved email: [email protected] Your personal ID: AFD-F4E-567 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

  • Buran

    Ransomware-as-a-service based on the VegaLocker family first identified in 2019.

    ransomwareburan
  • Detects Zeppelin payload 3 IoCs
  • Zeppelin Ransomware

    Ransomware-as-a-service (RaaS) written in Delphi and first seen in 2019.

    ransomwarezeppelin
  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1.exe
    "C:\Users\Admin\AppData\Local\Temp\1.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2480
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe" -start
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious use of WriteProcessMemory
      PID:2044
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe" -agent 0
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        PID:1072
    • C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      2⤵
        PID:3692

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
      Filesize

      211KB

      MD5

      511e849a593b7787b1387b56f12d8c05

      SHA1

      6c830eed04570ba8f8873cba3f61ca568f7b9535

      SHA256

      7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

      SHA512

      3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
      Filesize

      211KB

      MD5

      511e849a593b7787b1387b56f12d8c05

      SHA1

      6c830eed04570ba8f8873cba3f61ca568f7b9535

      SHA256

      7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

      SHA512

      3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
      Filesize

      211KB

      MD5

      511e849a593b7787b1387b56f12d8c05

      SHA1

      6c830eed04570ba8f8873cba3f61ca568f7b9535

      SHA256

      7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

      SHA512

      3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

      Download Submit