Overview

overview

10

Static

static

10

7757c11c44...2e.exe

windows7-x64

10

7757c11c44...2e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    164s
  • max time network
    50s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 09:54

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General

  • Target

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e.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: F98-443-138 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 5 IoCs
  • Zeppelin Ransomware

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

    ransomwarezeppelin
  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 2 IoCs
  • 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 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e.exe
    "C:\Users\Admin\AppData\Local\Temp\7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe" -start
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious use of WriteProcessMemory
      PID:632
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe" -agent 0
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        PID:1720
    • C:\Windows\SysWOW64\notepad.exe
      notepad.exe
      2⤵
      • Deletes itself
      PID:952

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    211KB

    MD5

    511e849a593b7787b1387b56f12d8c05

    SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

    SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

    SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

    Download Submit

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

    211KB

    MD5

    511e849a593b7787b1387b56f12d8c05

    SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

    SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

    SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

    Download Submit

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

    211KB

    MD5

    511e849a593b7787b1387b56f12d8c05

    SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

    SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

    SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

    Download Submit

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe
    Filesize

    211KB

    MD5

    511e849a593b7787b1387b56f12d8c05

    SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

    SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

    SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

    Download Submit

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\TrustedInstaller.exe
    Filesize

    211KB

    MD5

    511e849a593b7787b1387b56f12d8c05

    SHA1

    6c830eed04570ba8f8873cba3f61ca568f7b9535

    SHA256

    7757c11c449860e2dd54ae97e05835fb39f89a9c93f32dfc23b258ad49c3622e

    SHA512

    3d803144229fd7e63e971d0bd617fb96eaf2a1e802ad36dc2eac3fe809b351f68d07f4b81ebd24b9367e72b9d5e91a655a07acfd430ee631e226def7ff987fe6

    Download Submit

  • memory/632-57-0x0000000000000000-mapping.dmp

    Download

  • memory/880-54-0x0000000075831000-0x0000000075833000-memory.dmp

    Filesize

    8KB

    Download

  • memory/952-60-0x0000000000000000-mapping.dmp

    Download

  • memory/1720-63-0x0000000000000000-mapping.dmp

    Download