Overview

overview

10

Static

static

7

tmp.exe

windows7-x64

10

tmp.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    tmp

  • Size

    76KB

  • Sample

    231110-qg4epsfh61

  • MD5

    1fff77fb1958e7f730bb4de627a24d57

  • SHA1

    c3b071d324f095381bc604a46e1b8c5a89c68822

  • SHA256

    ec662c73279f4a3772e3e549b07bcd67803292981afae931df4b63d47f6ac2a9

  • SHA512

    53842ccf9a28f908f3e4ded42e5e925ce5c737c3b6458c6287f298cea948ecbac9ad18369f6b20665d6e0336e38b51d6aad43ec3bfbc155880b9361eef7acc61

  • SSDEEP

    1536:+ukv6BlkOCJSlq3//M/NqKTmPCQASm/dKRYHQiY0aB6:yvqlkOCJSQ3XM4P4SaKRYwF0aB

Score
10/10
ryukransomwareupx

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\RyukReadMe.html

Family

ryuk

Ransom Note
buricoume1976@protonmail.com balance of shadow universe Ryuk
Emails

buricoume1976@protonmail.com

Targets

    • Target

      tmp

    • Size

      76KB

    • MD5

      1fff77fb1958e7f730bb4de627a24d57

    • SHA1

      c3b071d324f095381bc604a46e1b8c5a89c68822

    • SHA256

      ec662c73279f4a3772e3e549b07bcd67803292981afae931df4b63d47f6ac2a9

    • SHA512

      53842ccf9a28f908f3e4ded42e5e925ce5c737c3b6458c6287f298cea948ecbac9ad18369f6b20665d6e0336e38b51d6aad43ec3bfbc155880b9361eef7acc61

    • SSDEEP

      1536:+ukv6BlkOCJSlq3//M/NqKTmPCQASm/dKRYHQiY0aB6:yvqlkOCJSQ3XM4P4SaKRYwF0aB

    Score
    10/10
    ryukransomwareupx

    • Ryuk

      Ransomware distributed via existing botnets, often Trickbot or Emotet.

      ransomwareryuk

    • Renames multiple (5201) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks