Overview

overview

10

Static

static

b0fa28ac0f...aa.exe

windows7_x64

10

b0fa28ac0f...aa.exe

windows10-2004_x64

8

Sharing

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General

  • Target

    b0fa28ac0f0657906df6312a22baf99111cbf27afeaab98c92eeba4b07fddeaa

  • Size

    212KB

  • Sample

    220520-3ag94sgec7

  • MD5

    3ac926d3bca5450ce48d10c253700ae4

  • SHA1

    0a918e434b1f8e125fb23a71c7317e6b16f3df23

  • SHA256

    b0fa28ac0f0657906df6312a22baf99111cbf27afeaab98c92eeba4b07fddeaa

  • SHA512

    ef62bc011a2fdff15b466f798bcbe5c4308e925fb1240d7621f65ede89432a329e00c80a917cc5be401b7029a2c5a497a9bc09436c3f1c05259a2e3479c581c5

Score
10/10
buranpersistenceransomware

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: 410-0DD-8DB 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.

Targets

    • Target

      b0fa28ac0f0657906df6312a22baf99111cbf27afeaab98c92eeba4b07fddeaa

    • Size

      212KB

    • MD5

      3ac926d3bca5450ce48d10c253700ae4

    • SHA1

      0a918e434b1f8e125fb23a71c7317e6b16f3df23

    • SHA256

      b0fa28ac0f0657906df6312a22baf99111cbf27afeaab98c92eeba4b07fddeaa

    • SHA512

      ef62bc011a2fdff15b466f798bcbe5c4308e925fb1240d7621f65ede89432a329e00c80a917cc5be401b7029a2c5a497a9bc09436c3f1c05259a2e3479c581c5

    Score
    10/10
    buranpersistenceransomware

    • Buran

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

      ransomwareburan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

2
T1490

Tasks