Overview

overview

10

Static

static

1

RNSM00336.7z

windows7-x64

10

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General

  • Target

    RNSM00336.7z

  • Size

    4.1MB

  • Sample

    241111-zjfk4ayrap

  • MD5

    d687eacb1c6492efb8be4eb94f88ed97

  • SHA1

    079756db279766a7f27041aed1412a9429f8cdb6

  • SHA256

    62410fecfd00f01c48ee3cfc87d508d20eb490c8e03abcba1ebfa8b2a1e7fab7

  • SHA512

    1625f9ff83102efc170b0271e4c0c561e87e8167b8dac18412ad90c9f488b29dcb79af2cb5100a2e079e5a831471cff15f5803baa5ff65490cd633d082039ed7

  • SSDEEP

    98304:GQlJj+xGl2j3/p1a5d+LoDdoimUqBOHzBP9dJKHqi+:hj+cAT/KaQos3TBP97K3+

Score
10/10
emotetgandcrabbackdoorbankercredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarespywarestealertrojanupx

Malware Config

Extracted

Path

C:\MSOCache\KRAB-DECRYPT.txt

Ransom Note
---= GANDCRAB V4 =--- Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .KRAB The only method of recovering files is to purchase an unique private key. Only we can give you this key and only we can recover your files. The server with your key is in a closed network TOR. You can get there by the following ways: ---------------------------------------------------------------------------------------- | 0. Download Tor browser - https://www.torproject.org/ | 1. Install Tor browser | 2. Open Tor Browser | 3. Open link in TOR browser: http://gandcrabmfe6mnef.onion/5cf0d747bfa4c5ab | 4. Follow the instructions on this page ---------------------------------------------------------------------------------------- On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free. ATTENTION! IN ORDER TO PREVENT DATA DAMAGE: * DO NOT MODIFY ENCRYPTED FILES * DO NOT CHANGE DATA BELOW ---BEGIN GANDCRAB KEY--- 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 ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/5cf0d747bfa4c5ab

Targets

    • Target

      RNSM00336.7z

    • Size

      4.1MB

    • MD5

      d687eacb1c6492efb8be4eb94f88ed97

    • SHA1

      079756db279766a7f27041aed1412a9429f8cdb6

    • SHA256

      62410fecfd00f01c48ee3cfc87d508d20eb490c8e03abcba1ebfa8b2a1e7fab7

    • SHA512

      1625f9ff83102efc170b0271e4c0c561e87e8167b8dac18412ad90c9f488b29dcb79af2cb5100a2e079e5a831471cff15f5803baa5ff65490cd633d082039ed7

    • SSDEEP

      98304:GQlJj+xGl2j3/p1a5d+LoDdoimUqBOHzBP9dJKHqi+:hj+cAT/KaQos3TBP97K3+

    Score
    10/10
    emotetgandcrabbackdoorbankercredential_accessdefense_evasiondiscoveryexecutionimpactpersistenceransomwarespywarestealertrojanupx

    • Emotet

      Emotet is a trojan that is primarily spread through spam emails.

      trojanbankeremotet

    • Emotet family

      emotet

    • Gandcrab

      Gandcrab is a Trojan horse that encrypts files on a computer.

      ransomwarebackdoorgandcrab

    • Gandcrab family

      gandcrab

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (293) files with added filename extension

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

      ransomware

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

      credential_accessstealer

    • Drops startup file

    • Executes dropped EXE

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Drops file in System32 directory

    • UPX packed file

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

      upx
    behavioral1

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

3
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Credentials from Password Stores

2
T1555

Credentials from Web Browsers

1
T1555.003

Windows Credential Manager

1
T1555.004

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Peripheral Device Discovery

1
T1120

Query Registry

3
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

1
T1490

Tasks