Overview

overview

10

Static

static

10

2024-04-15...ry.exe

windows7-x64

10

2024-04-15...ry.exe

windows10-2004-x64

10

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General

  • Target

    2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry

  • Size

    233KB

  • Sample

    240415-zn3w7aab9z

  • MD5

    a995c4d5b506266750e5314bb4ba2eee

  • SHA1

    732076bcc2a12224c76c8f336e73a23a510a8d52

  • SHA256

    0388b2592814fee8b53d26abe2a920269abdb064641214e8081fc2ae3d2781de

  • SHA512

    9cb9b03be9ae84db1aad26508802be9ffff77358fc4051fec197f19b5487668db6970a0559ea8cf9d9812677d88f22c5033e4adc60c43999fa95f9396265e5b5

  • SSDEEP

    3072:ic9RrWZt+em3xr8E1Q8dm0NYuaacYee2bE6//hXngpw4MmFQGvDrv:ic96Vr0Cu+Fp8Hvn

Score
10/10
chaosevasionransomwarespywarestealer

Malware Config

Targets

    • Target

      2024-04-15_a995c4d5b506266750e5314bb4ba2eee_wannacry

    • Size

      233KB

    • MD5

      a995c4d5b506266750e5314bb4ba2eee

    • SHA1

      732076bcc2a12224c76c8f336e73a23a510a8d52

    • SHA256

      0388b2592814fee8b53d26abe2a920269abdb064641214e8081fc2ae3d2781de

    • SHA512

      9cb9b03be9ae84db1aad26508802be9ffff77358fc4051fec197f19b5487668db6970a0559ea8cf9d9812677d88f22c5033e4adc60c43999fa95f9396265e5b5

    • SSDEEP

      3072:ic9RrWZt+em3xr8E1Q8dm0NYuaacYee2bE6//hXngpw4MmFQGvDrv:ic96Vr0Cu+Fp8Hvn

    Score
    10/10
    chaosevasionransomwarespywarestealer

    • Chaos

      Ransomware family first seen in June 2021.

      ransomwarechaos

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Detects command variations typically used by ransomware

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (173) files with added filename extension

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

      ransomware

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Disables Task Manager via registry modification

      evasion

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

      ransomware
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

3
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

4
T1490

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks