Overview

overview

10

Static

static

41fb0d5abf...29.exe

windows7_x64

10

41fb0d5abf...29.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    08-07-2022 03:59

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General

  • Target

    41fb0d5abfce450b71c05c46fe04ea03c31264c7474832d9979dbb1d03865629.exe

  • Size

    686KB

  • MD5

    efa2a4323f392f4200b1955e61c8faa9

  • SHA1

    1c2ff80ad2942b508c9e410a1403ee8ec05bf6b7

  • SHA256

    41fb0d5abfce450b71c05c46fe04ea03c31264c7474832d9979dbb1d03865629

  • SHA512

    9c4253d4062dc43c4dfc18c0a49bafb9fc74bab4ced012404f7d9996204784bf684e2810abfa81fcc48ccea780f08600d67ab3b0a41ce867d09399e5c162e788

Score
10/10
gandcrabbackdoorransomwarespywarestealer

Malware Config

Extracted

Path

C:\ODFGEIT-MANUAL.txt

Family

gandcrab

Ransom Note
---= GANDCRAB V5.2 =--- ***********************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: .ODFGEIT 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/85004426a53c29ec | 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--- lAQAAC24Zcjr5M8eJ1cwhZUlvQndwrV60fc9U5druhHAozbdikw3uKqELKxsskAPJ0vsFsx0oPn9eRJNYzeii+GdK9c0/M4PldsdACYS0U8E408w51Ro+IBcFvN/LylHfBdw50OmIqVJbIj2O3xtoiloPojgYVVpUQRk6GNBIBLoNh30mcpeUbkOntLc+APE4JhGkvHDka5rYQzfRMr6aJmH7dqByphQKO7S9qgJ5zh1xC1tyeb0BY/agBasrq+XO0AVuhAw0Eh4dksH6fJ4h9wGQcrVrjPZne0CGwT+GHuvFMLbjlxhbSC3X6qEf3piUvSJf5O75ay8jqnK56c6ipipRz1WbX3u19eUHapCJigtzqSMPvT1l8a4q2J7Wdf6y2Ef6fpt/dUOKA45lmYKxMtymrfQUMkgcB7wW4lxzqR4W8JniHNUnPTIhUjmRah0Pk5z+Nwn4krm23QJIJfP3LCvS3JJR9NLqF7iqUSqIE8UiIY1b48lYtcDFTyzp0a+8EOUdbcIbjg/Onmo+GAN8o4rIIeRs1ewKvhSnEF21ifgzgD3uXmSc9GPzwWigNwXUFh71UkxhowmKii59sWA0O7mlhb5bDfDvS31Fm6BaCHu+ECVuZj22x6KGl9HvvLntdv4K9TlLrTwAUSab3B+inBJ/qkrRJ8Z1KmcLXVzKwXUZfs5XGn954VkcMrz7WKeKOvgH6pl6KpWxe9Qn6Q4m63VA51RYa0U0hzW88ELpx2kqnArEe+49HRlCOWHoRSzx+TujHSk/4UDaVMl2pG2eC7wXC1Cq4cMAyNSm+scMgn98/kotDVvuB82qQKYP7NrXDoywcJwezhXsPzfIdtfnVdvFwz0+famwhnh2bSFrN0CSeO/5dr0udlDwDI5mRxs9ajjrKdtSLu4e89WeDWWQFAn9N4IGoA3UmYzrHVbNZ+o+M/xvKZXiMpCcAxtWam39CzINi+Tj1SMk5O/QrtpO2aoMYVgXF0l4D0sIxqE2+UakB8+co3eaOm04+my+wNeg51hjKXJnxJpJl8rxsMMRvTGBr8pqAbkkd6DIvvHPtEZoiTWfR0q0NJBp/w5cvD1hhx53GUJUbaIlS784U2+6/BPZuCOoM2eHvwQ0bkG7/KPcwD9DLdGOvn9/B//oRivWAO2piVsRhZ59diw13wvU9GtQZ7PytW/oRrpZrEKn+VYa24j+a7k6tDMrRu2Qfpdpo6YOLC3KqLoAwzIC/DDqpw4dblLl5Hjbk/YqkowB8ScIrQxwEhHhgQbIHhZfXC2Pu46hfFfg6aFzfsKVEI36TVPWmMrcnHFDClkTpZ/qiKGygu804D/+AOwFtK8kZqenrlTsmsNkftZ49RGdOo91FQ76S9Yeq9wu6eoX1bclaSHKLY7Ff7rMBUUN+5lf8ZZrpQdy+RDp2C5qQK9Cn2YfE1x89Xv6Gqq3SU89vBLUtvkdSfHAidYZCpHUxPmLHLz8kwDNWMTtFmfbhGxpUDZOFAtT68K+jdKbx7DrUbp7XCbvA/Wt2PYkd3tTZLj8Xg6+s3uS3L3yrxT+dTxpropdrhT4vl7g4QFswiNc6FLinUT+OWba9u8K3BHirK39ITwyyY98HtTONaDl0fVJcEQIwxDoQSwT483biu8IJTipNnDzfzLACpyi+SNVn0BsUIzRV0Uua1HhYjNYpwrzmKPXjDmocKxjr8oD19HSGzn2Mx3QASbkZ6KqIc/DCoh9k3GsmnNmF6sTV1qaXGeJTQcFJWLKEaSwO/sgqVKfxmouKRDw3fBFEB5msoKtbWPkte+Ax/RwcPORj4OGf5et1T5/BUS6t7tbfvbu+QqwgWqq7Z2mTSsy6BTHNmIFPNMvc0g7IvUSn65VEI05vUJMaIaGj94zX/q6dLUOEsCynbvNgNPCwBLGmP8bcKeAhFQJ3jZIoUB02MYuNqZybxyLUsokq6Oc4w8ezanqLmCVSVuOKaibrliqKlc67XO5Mc4jv/1B6XNfkEETms2uVzl+jIOd7KEtod9jzruIdvZuMUPV2H+4NfI9/8AHVUYzuUhS3UfuYD3yt78GnWVrGUMDAfONq3oj3VcIjnCVmnC5ZrWDclUSvezdtI0s9/8vzHvqQD7ePYDQFq8WHwONnYdhdNDZmd/VgDNnfMmWwz0dd6XDfi5cZWG6hQ/46/PhSASatg6f6U+6u9ZvxUa3FKpDTMms9+wYH5vuIXfyam+dcAEGDlFY+/eJkcOS8VEiwsg6q5OQF0FYrBqjzE= ---END GANDCRAB KEY--- ---BEGIN PC DATA--- 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 ---END PC DATA---
URLs

http://gandcrabmfe6mnef.onion/85004426a53c29ec

Signatures

  • Gandcrab

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

    ransomwarebackdoorgandcrab
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 14 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 24 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 23 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\41fb0d5abfce450b71c05c46fe04ea03c31264c7474832d9979dbb1d03865629.exe
    "C:\Users\Admin\AppData\Local\Temp\41fb0d5abfce450b71c05c46fe04ea03c31264c7474832d9979dbb1d03865629.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c vssadmin delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1620
      • C:\Windows\SysWOW64\vssadmin.exe
        vssadmin delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1532
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/1056-54-0x00000000764C1000-0x00000000764C3000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1056-55-0x0000000000400000-0x00000000004B1000-memory.dmp
    Filesize

    708KB

    Download
  • memory/1056-56-0x00000000005B0000-0x00000000005D0000-memory.dmp
    Filesize

    128KB

    Download
  • memory/1532-58-0x0000000000000000-mapping.dmp
    Download
  • memory/1620-57-0x0000000000000000-mapping.dmp
    Download