General

  • Target

    chocolate_nowin.zip

  • Size

    26KB

  • Sample

    231224-c3gk6sdfam

  • MD5

    27c3177d59bf4d4531d9fe8671d5e29c

  • SHA1

    cdc87168aa0d4ba97467f0df45930a24631679c2

  • SHA256

    4ec289cd5c113fa566539f1205cf8b3116d38338050705c340aa2f8118a4d291

  • SHA512

    e9c881a8fb8a058d8c28ebbf3e58460c85670f6e200904aa25843a4110c29dcbed7bfe27f9f7bd32666108d5c44f5231bc89bec1ff49ffffa7768628714efb2a

  • SSDEEP

    768:x4YGhHbx7ux2OtqJ0NrYBd69O59GKbup7IU5k:xfGbxpOdNrYjHGKbjD

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\+README-WARNING+.txt

Ransom Note
::: Greetings ChocVM ::: Little FAQ: .1. Q: Whats Happen? A: Your files have been encrypted. The file structure was not damaged, we did everything possible so that this could not happen. .2. Q: How to recover files? A: If you wish to decrypt your files you will need to pay us. .3. Q: What about guarantees? A: Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will cooperate with us. Its not in our interests. To check the ability of returning files, you can send to us any 2 files with SIMPLE extensions(jpg,xls,doc, etc... not databases!) and low sizes(max 1 mb), we will decrypt them and send back to you. That is our guarantee. .4. Q: How to contact with you? A: You can write us to our mailboxes: xakep@dark-forum.ru or hackr@dark-forum.ru .5. Q: How will the decryption process proceed after payment? A: After payment we will send to you our scanner-decoder program and detailed instructions for use. With this program you will be able to decrypt all your encrypted files. .6. Q: If I don�t want to pay bad people like you? A: If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause only we have the private key. In practice - time is much more valuable than money. :::BEWARE::: DON'T try to change encrypted files by yourself! If you will try to use any third party software for restoring your data or antivirus solutions - please make a backup for all encrypted files! Any changes in encrypted files may entail damage of the private key and, as result, the loss all data.
Emails

xakep@dark-forum.ru

hackr@dark-forum.ru

Targets

    • Target

      chocolate_nowin.exe

    • Size

      42KB

    • MD5

      c3eb80e8aa150aa10b82a5975c17a116

    • SHA1

      3d8e7c04891606b47c27e8225c27f385de3100e5

    • SHA256

      92cc252d8eebc2d64aaf63f383eb549e46d115409ec2d537a3ff935b3f1ff40b

    • SHA512

      b676cfef912f24aa2e96ca2bc0b73e808702450f1d4439498f0ccd53248f4b6d88fa753d09e155da5d08bf3d77d794c36a16678774402f327263a3175c5e520d

    • SSDEEP

      768:5O1oR/fVS1RzK4wbs+D/SIJX+ZZ1SQQwZuIOPzDX5aBd69O59GKbup7IU5F:5FS1FKnDtkuImX4jHGKbj8

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (9614) files with added filename extension

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

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Deletes itself

    • Reads user/profile data of web browsers

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

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

Defense Evasion

Indicator Removal

3
T1070

File Deletion

3
T1070.004

Modify Registry

2
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

4
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Collection

Data from Local System

1
T1005

Command and Control

Web Service

1
T1102

Impact

Inhibit System Recovery

3
T1490

Defacement

1
T1491

Tasks