Overview

overview

10

Static

static

3

1c7ed964dd...18.exe

windows7-x64

10

1c7ed964dd...18.exe

windows10-2004-x64

7

Sharing

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General

  • Target

    1c7ed964dddd78ee5e8d3427e39fb613_JaffaCakes118

  • Size

    731KB

  • Sample

    240506-pm8e6seg82

  • MD5

    1c7ed964dddd78ee5e8d3427e39fb613

  • SHA1

    e34a8c0d58ffe8228ccd18adcab3bd155012f7bb

  • SHA256

    9f108d3210afe4fd08c411caa2cd5540c7d1501b419018c193d30eccca8b02df

  • SHA512

    e2995588fd9b0a02e19f1eb9443d507b6160ae34a6e6d5b7d8749ae895eceda19cdf55c24d1b563bb8841c6dc05fdcf8a8b857f5ccfdede7ebbeeee8d8d3546b

  • SSDEEP

    12288:164z/NTF6hT2H72/3DTYFC24a10Yw54xs0FzNiqosdA6F5mSZ/:gWF6hTCq3YFD4eosa6/

Score
10/10
ctblockerdefense_evasionexecutionimpactransomware

Malware Config

Extracted

Path

C:\ProgramData\uowhmkm.html

Ransom Note
Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://kurrmpfx6kgmsopm.onion.cab or http://kurrmpfx6kgmsopm.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org. 2. In the Tor Browser open the http://kurrmpfx6kgmsopm.onion Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. Follow the instructions on the server. The list of your encrypted files: Path File
URLs

http://kurrmpfx6kgmsopm.onion.cab

http://kurrmpfx6kgmsopm.tor2web.org

http://kurrmpfx6kgmsopm.onion

Targets

    • Target

      1c7ed964dddd78ee5e8d3427e39fb613_JaffaCakes118

    • Size

      731KB

    • MD5

      1c7ed964dddd78ee5e8d3427e39fb613

    • SHA1

      e34a8c0d58ffe8228ccd18adcab3bd155012f7bb

    • SHA256

      9f108d3210afe4fd08c411caa2cd5540c7d1501b419018c193d30eccca8b02df

    • SHA512

      e2995588fd9b0a02e19f1eb9443d507b6160ae34a6e6d5b7d8749ae895eceda19cdf55c24d1b563bb8841c6dc05fdcf8a8b857f5ccfdede7ebbeeee8d8d3546b

    • SSDEEP

      12288:164z/NTF6hT2H72/3DTYFC24a10Yw54xs0FzNiqosdA6F5mSZ/:gWF6hTCq3YFD4eosa6/

    Score
    10/10
    ctblockerdefense_evasionexecutionimpactransomware

    • CTB-Locker

      Ransomware family which uses Tor to hide its C2 communications.

      ransomwarectblocker

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

2
T1070

File Deletion

2
T1070.004

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Resource Development

Reconnaissance

Tasks