Overview

overview

10

Static

static

10

Malware-1-master.zip

windows10-2004-x64

1

Malware-1-...30.exe

windows10-2004-x64

10

Malware-1-...40.exe

windows10-2004-x64

10

Malware-1-...32.exe

windows10-2004-x64

10

Malware-1-.../5.exe

windows10-2004-x64

10

Malware-1-...91.exe

windows10-2004-x64

10

Malware-1-...ey.exe

windows10-2004-x64

7

Malware-1-....0.zip

windows10-2004-x64

1

Malware-1-...ad.exe

windows10-2004-x64

3

Malware-1-...ti.exe

windows10-2004-x64

5

Malware-1-...an.bat

windows10-2004-x64

7

Malware-1-...an.exe

windows10-2004-x64

3

Malware-1-...ve.bat

windows10-2004-x64

7

Malware-1-...ve.exe

windows10-2004-x64

7

Malware-1-...ya.exe

windows10-2004-x64

Malware-1-...re.exe

windows10-2004-x64

10

Malware-1-...ry.exe

windows10-2004-x64

10

Malware-1-...ck.exe

windows10-2004-x64

3

Malware-1-...he.exe

windows10-2004-x64

10

Malware-1-...op.exe

windows10-2004-x64

7

Malware-1-...rb.exe

windows10-2004-x64

10

Malware-1-...ue.exe

windows10-2004-x64

1

Malware-1-...ng.exe

windows10-2004-x64

6

Malware-1-...kt.bat

windows10-2004-x64

7

Malware-1-...o3.exe

windows10-2004-x64

10

Malware-1-...ey.exe

windows10-2004-x64

10

Malware-1-.../m.exe

windows10-2004-x64

Malware-1-...o3.exe

windows10-2004-x64

9

Malware-1-...dme.md

windows10-2004-x64

3

Malware-1-...er.zip

windows10-2004-x64

1

Malware-1-...ic.exe

windows10-2004-x64

3

Malware-1-...in.exe

windows10-2004-x64

10

Resubmissions

13-01-2025 04:35

250113-e7x5tswlfz 10

13-01-2025 03:52

250113-ee43nsvjby 10

12-01-2025 15:57

250112-tealdsymgt 10

12-01-2025 15:53

250112-tbnc3s1mhn 10

Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-01-2025 15:57

Sharing

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Report Analysis Logs

General

  • Target

    Malware-1-master/crb.exe

  • Size

    139KB

  • MD5

    24275604649ac0abafe99b981b914fbc

  • SHA1

    818b0e3018ad27be9887e9e5f4ef1971f422652c

  • SHA256

    4b5fe7497864d07f78af15fa3e1aa3702b303b89f9644624871d83dd0f484749

  • SHA512

    008ef045724963d6ae3b845a6c3de8ebb6682b0f4b8ea77c2d35e2193596b78f0092183de0a88a34f7dde4e71abbc129b2f0f00fd8469801fff66f1b8390b6c8

  • SSDEEP

    1536:JLMVCWvZ8URtqOz3d+1Qs6H9Mk2e3E2avMWC3yMgYxf6+okbdWsWjcdpKCaIxWzX:VM9ntZ3s1QJdnU2SQdf64ZZ8CaIxWec

Score
10/10
gandcrabbackdoorcredential_accessdefense_evasiondiscoveryexecutionimpactransomwarespywarestealer

Malware Config

Extracted

Path

F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\MHQUIY-DECRYPT.txt

Ransom Note
---= GANDCRAB V5.0.4 =--- ***********************UNDER NO CIRCUMSTANCES DO NOT DELETE THIS FILE, UNTIL ALL YOUR DATA IS RECOVERED*********************** *****FAILING TO DO SO, WILL RESULT IN YOUR SYSTEM CORRUPTION, IF THERE ARE DECRYPTION ERRORS***** Attention! All your files, documents, photos, databases and other important files are encrypted and have the extension: .MHQUIY 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/5f06f3349dad0036 | 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--- lAQAAGg88lWQ493+g7wfUHRbbi8vh41I9CF36Oqq//I16YGCearWT6RkSqOtPruJFgRgQ6R2TRwlr0Uv77Dzav5EfLN6kfn1m1BsD7U2tL0iRR+uCkz91/9DEwhlfKC0Q+b3F9DOL/cinEVWUUH0FMJeF/kC2cYvkz7LLAI4xNZuWbnrbvYPDFo5POoO0vcDldmntWtUDj9XqOSYpQOpXCF7gMqsVi8875Xssj6Nm1HlsQY086di9/HDDnhBLbm74Vy2QPhAU5LUkSjy+q1a83SgYUhhpGw+hKvJ/J8McMYmyUbaf7EZ4cDa43lRmkZs8XgNSvXv7UbGuagv4J438sI5P2uh47fwTxv+oO7Ame+JdldWIqqXIQm/Tu76hpqGhKDiOUYj1lclzoLLP/ZRUjAIod024orIv/fAqb3UyDgBL20uLskaU/yetSY6sN+DUPnmvDh1DnlNM2YfypO80KJclJ4J+OxR1K03ATs5iRc3AL/4Bxk5Uy6UwXUMBj9R8xqkDGHxVKrqq0zbPHBHbR7t/8Wf7CxQ7gVRQzoYBRHvrUc72vyclM+HqBsSBLXFVvqzS+zL0dydlAER5uL6SkqcNC3uWvWaHc6V5sBc23AVtbDCnCYhfGHyDkKGSquvhAuh7i/TQAOvST75f+cb/ENkuw9VbgBaaAT0GfLB1KlN5x2At7Jq+YLNAZjM6W1mCI/Vy6EwCsCHCMSChB4lwCgERcpAi3tNPmci7zjG1/IRmMXQkAA/uil88vjcLCiFQO4/pR/HhsUokRfeOFOl824FeJXvweal3HwnArwRYSGeEekF9jSBW9XaKCXHYTR1DsFBp9nyfGERYFhzA6+5ijpWdePRajRgLY1TZ6DpfaqHEXS1gStjYu2gyZ2j3ogI6b3o3iGbV2RREV7o50LFLdSGE6iTcSE6KMnN7Aam53ahV4ZALsNfBAkKjH5pKJu3Xv/xEPpgJ2auCxLH25uBZ3Y23MXC/mu1zP7//6xtfkWyJmCouP9vawir6bfrWRZgZAbkC1byQOLZPVaPEcKhKKnp3KfidmArOkFh1Psa5BxrcMFcmvGwS5Ix7SFPSf9B9x+4TV6QZX1fVCE5APLfXlHiOar1Dl5+HAa27DRaUMls78De2wiN6J5suYv14R92HZowEGUaRcVzPSse0A30HFoJ9h7OQZOUY5gTOaqc5mrhQAA5Iu2VaD1NY2s05fBA0cm4PHiYuOw4A4PI9FkLmcm6AG7IVVD0pybvWZvRGFPHlhyRX4zj6uSQb2E3+POyogSNxev3LGMj8WAYCh60oguoTJERPY7KLkaXETU2usNYTHwRM81lNN2/X+BZg89MwaFUA+P+dt/dwOj97NsNAz/7cEpnheAkk1s0Uwkn6svfTYgcX33Poz4Q28brt9N71GyfyOjCFxc+t1qdGtHwg9GlVY6Y4WWehiGmF1bS8X2m5F9zCwnVpce+dMTC+WFaizktA2XmevLkKuTLQxbu45v/1jMb8YsX6zKx+9/hbwheSbuRBwBX/vbx8WxADN4MjcwexUypxnGcqUKeDGK6L/b3pQmG8JExMOSgM97XYDQc2OdCvGGAxZVqVSgVWnMlPMQFR6hSsomyDTPh87OZ8FV5XI+gGL9e1yUZmoJUnBF4IkYAPPdJLinwQjokTXrLmoJGxFj4ZLDNLzXWi6nLuwCZ/+9S1jrSKP2rPEXQZw8ArrlaXk7Nj3NKXNUmVNV35F+epTM2KkqBhaWhoLmv2bX+uTGlmsUL2/sGt9i31smYPqEe3ZsWhOgBiSEdGt3hsJZwBR7Fws0SMnCAT5Tayk3UBg5l8K2fs2g4p04lGzmXSCZtfWRh03yzE+eoqRqWECSETRGbzYqy59x9M6e2qLLmU1TWpolAinzJX4/fUzW2HNVnADY3JtGbQWYUTRVkuMDhMS43GlYErxUjV3mwq4q2Xru3nVQBPLXos4mRuA8I4OKBgzN78E+aAPLk8h6CJFGVla2CGjOfuJS+YjcFvs8EuwJeadBu5NvI12sIATnNxOc0e6U2kZKndCla2+f9bPstdkF85PkLvCa058dAz6wS6TYIAvIQzzuC09PDJFkOBHliVMiVSCbkHbvAnaUTtDznqia9w//+of8gmf0z637Xv66Mt3BXtG+z9J3JU/hygS5ZbSj8Sw/E77PYfPDrOJX5PON9925UqCqjlEFz9fd4JBQdsqm5Lq7ccgsW0mQPl4FyW1uvxvUCkrKlvDTpacWEx/PmJUI= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- wfKD6iudumBkmpL8IRr4U4exEVaoOXLtwDwmOrT1y1YWvOiWMx5GYaRdvZZQTptRpHYc7mtWq7fZTGqHhh5qBJzzs9MC7736UkGSDDniUJJG8/LFF//kmGmoAZAGLo2j5/wd2UrxMJK+iqKhTkS3ArgAxrZOOOiXrbnhbWMkLHQnbYuWlMClYZxYU6SDxpopRo5r292AV1KIZBZV4APBuUHcKSIr2MWMI0O1MKIP2IpKLE2TS5wNmoQoAHZIP7k/TfrG1tVzlDb3jcZAB3gql9dnWN0lCD4xdg7bDNQrvH1xSi3FCw+6kfktKtizqdynr7r154JiurEmkUXB5eLy/2Y2F+twGthYb1qHBi7t+RGHEY0boScS4tq4Pab3Y5NyPYz32XaispQRTRkqF1PXJPcJ15EHwNAoARPLnK8+Au5ZALyfhGEwg6hrKQ3vxBFKwg70Zi7pDxFM3vTLNOav1wIZMXQVRleKYDmn1lvgAn90mSDf7SyGQSZnn7Ivlsuw7HIKVYbpfzf2fBccdMBnP2lNhH9XQ3DC2qZAEuDtLkioBZ9MNJGhHpcOdb/HRc8P54k7V/HuibORzJL9NXYCh8sz7uxeRbttC/+YbnzW5+JOXs5ePtQu9FxhOlLD2rpghGmLLQQz3Qtdfjj5QGFTiWwEn7JfT+zb ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/5f06f3349dad0036

Signatures

  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • Gandcrab family
    gandcrab
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Renames multiple (304) files with added filename extension

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

    ransomware
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

    credential_accessstealer
  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 27 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 7 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Malware-1-master\crb.exe
    "C:\Users\Admin\AppData\Local\Temp\Malware-1-master\crb.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3800
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1484
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1
T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

2
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

4
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

Defacement

1
T1491

Inhibit System Recovery

1
T1490

Replay Monitor

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Downloads

  • F:\$RECYCLE.BIN\S-1-5-21-493223053-2004649691-1575712786-1000\MHQUIY-DECRYPT.txt
    Filesize

    8KB

    MD5

    50a98a68a590582cf6dadb2ea0a2716f

    SHA1

    ccedbffdc597a08813a0bbea25bfa123f2f7946b

    SHA256

    8facd51e94089cc9bfa802408b9c8df3049f692b64c14622a6056b565eaa1eef

    SHA512

    42fd3e67efc3f6fa8014f304b4834232df94caed0f52732dfde009042f5e7d99205eaeb1df3ca52e63522cc245997032188d46dcb19148d45f7c1d5dcd745350

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