Overview

overview

10

Static

static

msedge.exe

windows7-x64

10

msedge.exe

windows10-2004-x64

8

Sharing

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General

  • Target

    msedge.exe

  • Size

    413KB

  • Sample

    230106-rcjp6sce4z

  • MD5

    cee276c40f8aa85fe77c1e43cb87cb9b

  • SHA1

    f57853fb3bb038887c0773a100cec95837bc2039

  • SHA256

    3a70394c394cb59907b5798a96a582f37ce62885fadd73267df25ad680141289

  • SHA512

    7db64681c0d854d1e3beed72ee4cabbd7c71a9eae84c41a9cd03da6e9494986943975596a4a3ba8ac9d164dd27cb4437d16a2b7150f9a78445d06699abe3ca2b

  • SSDEEP

    6144:95yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQCU:9TX6WSofcZ+KCIGDU

Score
10/10
ryukpersistenceransomwarespywarestealer

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note
Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at WayneEvenson@protonmail.com or WayneEvenson@tutanota.com BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Emails

WayneEvenson@protonmail.com

WayneEvenson@tutanota.com
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Targets

    • Target

      msedge.exe

    • Size

      413KB

    • MD5

      cee276c40f8aa85fe77c1e43cb87cb9b

    • SHA1

      f57853fb3bb038887c0773a100cec95837bc2039

    • SHA256

      3a70394c394cb59907b5798a96a582f37ce62885fadd73267df25ad680141289

    • SHA512

      7db64681c0d854d1e3beed72ee4cabbd7c71a9eae84c41a9cd03da6e9494986943975596a4a3ba8ac9d164dd27cb4437d16a2b7150f9a78445d06699abe3ca2b

    • SSDEEP

      6144:95yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQCU:9TX6WSofcZ+KCIGDU

    Score
    10/10
    ryukpersistenceransomwarespywarestealer

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • 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.

    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

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Tasks