Overview

overview

10

Static

static

ffbf608aae...66.exe

windows7_x64

10

ffbf608aae...66.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    ffbf608aaef69e1ee53f8303c685604dd584985f809d19f6cbc914fa86b3ae66

  • Size

    118KB

  • Sample

    220305-2lmtasheb3

  • MD5

    a31089dc3cafe77c39268273d689193b

  • SHA1

    032e0b9a0bf012401507be974ee6bdb3e6726fd7

  • SHA256

    ffbf608aaef69e1ee53f8303c685604dd584985f809d19f6cbc914fa86b3ae66

  • SHA512

    d92748b34286c21f4781b147000be1b54cf57e14587517638647b8369ccd01b3ecb00545be0d87d44f9dde6b30a404db2740bf06275dea647efc33eafd65d2f4

Score
10/10
ryukdiscoveryransomware

Malware Config

Extracted

Path

C:\users\Public\RyukReadMe.html

Family

ryuk

Ransom Note
contact balance of shadow universe Ryuk $password = 'N2QvTsXamJ'; $torlink = 'http://zq6gyokyso6dgsxitjuk2tkq2rl4saq4tkz2idcf6z3tfondtvemshad.onion'; function info(){alert("INSTRUCTION:\r\n1. Download tor browser.\r\n2. Open link through tor browser: " + $torlink + "\r\n3. Fill the form, your password: "+ $password +"\r\nWe will contact you shortly.\r\nAlways send files for test decryption.");};
URLs

http://zq6gyokyso6dgsxitjuk2tkq2rl4saq4tkz2idcf6z3tfondtvemshad.onion

Targets

    • Target

      ffbf608aaef69e1ee53f8303c685604dd584985f809d19f6cbc914fa86b3ae66

    • Size

      118KB

    • MD5

      a31089dc3cafe77c39268273d689193b

    • SHA1

      032e0b9a0bf012401507be974ee6bdb3e6726fd7

    • SHA256

      ffbf608aaef69e1ee53f8303c685604dd584985f809d19f6cbc914fa86b3ae66

    • SHA512

      d92748b34286c21f4781b147000be1b54cf57e14587517638647b8369ccd01b3ecb00545be0d87d44f9dde6b30a404db2740bf06275dea647efc33eafd65d2f4

    Score
    10/10
    ryukdiscoveryransomware

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Drops desktop.ini file(s)

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Permissions Modification

1
T1222

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks