Overview

overview

10

Static

static

442bf867c8...24.exe

windows7_x64

10

442bf867c8...24.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    05-03-2022 18:01

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General

  • Target

    442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024.exe

  • Size

    214KB

  • MD5

    2f1ecf99dd8a2648dd013c5fe6ecb6f5

  • SHA1

    121c377693b96eef8e84861f091ef47e6fb6cae5

  • SHA256

    442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024

  • SHA512

    793eb6a3f3d0323b0749a35e372c9fcde15a912f32d74fc5fa0fc104c32d8348f431347fefd1c34e3d51d9b20432f8e66b9ae3b9523b4b4b21e76b6fd2ae8219

Score
10/10
buranransomware

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: uspex1@cock.li 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: uspex1@cock.li Reserved email: uspex2@cock.li Your personal ID: 163-CC3-CC9 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.
Emails

uspex1@cock.li

uspex2@cock.li

Signatures

  • Buran

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

    ransomwareburan
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
    evasionspywaretrojan
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024.exe
    "C:\Users\Admin\AppData\Local\Temp\442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024.exe"
    1⤵
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2800
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /C wmic shadowcopy delete
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2260
      • C:\Windows\SysWOW64\Wbem\WMIC.exe
        wmic shadowcopy delete
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} recoveryenabled no
      2⤵
        PID:2224
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
        2⤵
          PID:1728
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe" /C wbadmin delete catalog -quiet
          2⤵
            PID:1940
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /C vssadmin delete shadows /all /quiet
            2⤵
              PID:1924
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\~temp001.bat
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2320
              • C:\Windows\SysWOW64\Wbem\WMIC.exe
                wmic shadowcopy delete
                3⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:112
            • C:\Users\Admin\AppData\Local\Temp\442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024.exe
              "C:\Users\Admin\AppData\Local\Temp\442bf867c8738c7231ff09db0715ec79d0ae15c050fbd46946c45b76a040d024.exe" -agent 0
              2⤵
              • Drops file in Program Files directory
              PID:4068
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
              PID:4984

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Initial Access

            Execution

            Persistence

            Privilege Escalation

            Defense Evasion

            File Deletion

            1
            T1107

            Install Root Certificate

            1
            T1130

            Modify Registry

            1
            T1112

            Credential Access

            Discovery

            Query Registry

            1
            T1012

            Peripheral Device Discovery

            1
            T1120

            System Information Discovery

            1
            T1082

            Lateral Movement

            Collection

            Exfiltration

            Command and Control

            Web Service

            1
            T1102

            Impact

            Inhibit System Recovery

            1
            T1490

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\Local\Temp\~temp001.bat
              MD5

              ef572e2c7b1bbd57654b36e8dcfdc37a

              SHA1

              b84c4db6d0dfd415c289d0c8ae099aea4001e3b7

              SHA256

              e6e609db3f387f42bfd16dd9e5695ddc2b73d86ae12baf4f0dfc4edda4a96a64

              SHA512

              b8c014b242e8e8f42da37b75fe96c52cd25ebd366d0b5103bcba5ac041806d13142a62351edecdee583d494d2a120f9b330f6229b1b5fe820e1c7d98981089e9

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