Overview

overview

10

Static

static

EIMnwkN.bin.exe

windows7_x64

10

EIMnwkN.bin.exe

windows10_x64

10

Sharing

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General

  • Target

    EIMnwkN.bin.zip

  • Size

    75KB

  • Sample

    201105-k5mbfykn9j

  • MD5

    f1c834a33eb194094a335b11bc51f3c5

  • SHA1

    76dfbb7cc6e31dd0a1944765595a0ec9c0f58439

  • SHA256

    1ae002805168e732aa638705650b883c47ac62cb8a6bc1423fc7537d56e47364

  • SHA512

    e09c78c87c3356cd6ca0eb96e5864a3377f5ae48d66bcdaec7d4a9ef8b40963e1fe125922016fc48ab2015508bbde1efdf4fc82c62da6d6035307c1808bdcb95

Score
10/10
ryukdiscoverypersistenceransomware

Malware Config

Targets

    • Target

      EIMnwkN.bin

    • Size

      196KB

    • MD5

      484a2bcb1335ac97ee91194f4c0964bc

    • SHA1

      ad11ed52ab33ad05eb9b1e9ade134ca1348acc81

    • SHA256

      40b865d1c3ab1b8544bcf57c88edd30679870d40b27d62feb237a19f0c5f9cd1

    • SHA512

      6e61612bd29425c5ab9b648fa83bc2d8616071247f8659aa316ab9d4adde0a9ceb9301737bb4216db223dfdd371106da75463f6d7e3a88e1c4cdd6c821f3935f

    Score
    10/10
    ryukdiscoverypersistenceransomware

    • 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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence
    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

File Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Tasks