Analysis

  • max time kernel
    144s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/01/2024, 21:30

General

  • Target

    7e0daefa772c4e91427b7e227464a94a.exe

  • Size

    846KB

  • MD5

    7e0daefa772c4e91427b7e227464a94a

  • SHA1

    47b45eae10de91705fb957be36415a0a3575ae3d

  • SHA256

    0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908

  • SHA512

    cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650

  • SSDEEP

    24576:0OeSD0Ks9nL9wm1saIFLe4kjDtbuaPWAEDq/:0hL9w/e4sDYa+PDq

Malware Config

Extracted

Family

djvu

C2

http://astdg.top/nddddhsspen6/get.php

Attributes
  • extension

    .moqs

  • offline_id

    CatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1

  • payload_url

    http://securebiz.org/dl/build2.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-N3p42CffoV Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0318ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 17 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
    "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
      "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2500
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2944
      • C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
        "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4008
        • C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe
          "C:\Users\Admin\AppData\Local\Temp\7e0daefa772c4e91427b7e227464a94a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:4364

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          1KB

          MD5

          7e620bb51c6346619ece5d41f4ac9ccf

          SHA1

          55f8435cc4f740be20cc8f3e1f3709b3e37bff89

          SHA256

          972331bf876251e477d6232910b63cc2901ea9a039f03161b07bd4851d1452ab

          SHA512

          4b9a134d298f454348c3bdd274fa872df5d9e8fd107dce8792430837ab934c611eef26a2e0ec8bbc88bfc94a5b0c0e6add257ff1abcecf8fe6b3dddd1bb14874

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          724B

          MD5

          8202a1cd02e7d69597995cabbe881a12

          SHA1

          8858d9d934b7aa9330ee73de6c476acf19929ff6

          SHA256

          58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

          SHA512

          97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

          Filesize

          410B

          MD5

          c642ff867b62d9b88eca2ef043df3d74

          SHA1

          640cfee218cc457492d1bbe3974093d5cf2dc287

          SHA256

          63cbd31fb5bddf2dbaf49a5659f36f98bde8e410d6c3aaee5ca059cd2bd44f66

          SHA512

          9896aa1fde30c2b14862551ec013ab188d1496fbf332a2afecf81a1cce3ce37092bcfb1b7a7528e12c5ae4c4b1c1bf7af5fa0fc43aa78733b87f5e549e7164c1

        • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

          Filesize

          392B

          MD5

          335d879333160cef5e00aff29c9e4502

          SHA1

          7fd8518e51506d6bbf3910a78b890fd7e300542c

          SHA256

          cc15bc48459238bdf9c0c0bd61fe7072e110bf758aa75025630e11531ab5082b

          SHA512

          9437b8045ce462131f74ade7081de1bf7eb0513b1b85f08c1fa5e3f477fc5687d0bfae4cfc984ed0bbc19dc90c26720baa5c54953038e4f004d8ce341d05bf14

        • C:\Users\Admin\AppData\Local\56a91300-2e67-458d-ba1a-4b11e616813f\7e0daefa772c4e91427b7e227464a94a.exe

          Filesize

          846KB

          MD5

          7e0daefa772c4e91427b7e227464a94a

          SHA1

          47b45eae10de91705fb957be36415a0a3575ae3d

          SHA256

          0905ce384f22775cbf39039e92c7c35ade14ce150be8eb76ad6d5be3a09fb908

          SHA512

          cd60fc07593d242fe9b2e6ae74c340d36c905b8692f11df78ba15b92b52eaf0e4912777e179ed1d2a840c00fbc060ea86c8e82c506c00dd64efff84b5f0a9650

        • memory/2348-1-0x0000000000690000-0x0000000000730000-memory.dmp

          Filesize

          640KB

        • memory/2348-2-0x00000000022B0000-0x00000000023CB000-memory.dmp

          Filesize

          1.1MB

        • memory/2500-4-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2500-15-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2500-6-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2500-3-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/2500-5-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4008-18-0x0000000002130000-0x00000000021D0000-memory.dmp

          Filesize

          640KB

        • memory/4364-20-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-22-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-21-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-27-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-28-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-29-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-31-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-33-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-34-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-35-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB

        • memory/4364-37-0x0000000000400000-0x0000000000537000-memory.dmp

          Filesize

          1.2MB