Resubmissions

04-10-2024 16:44

241004-t8yv3syhpd 10

27-09-2024 16:54

240927-vepkzsvbre 10

27-09-2024 16:44

240927-t86wpavard 10

04-08-2024 18:04

240804-wnq1vawbpg 10

03-08-2024 17:26

240803-vzvbzazekn 10

03-08-2024 16:14

240803-tpp4tsshqa 10

03-08-2024 15:52

240803-tbarzsseqc 10

31-07-2024 19:40

240731-ydk3yszdpq 10

31-07-2024 10:53

240731-my145atfmf 10

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-07-2024 10:53

General

  • Target

    32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe

  • Size

    844KB

  • MD5

    a6f049a056e37a65280ddfe17f689b50

  • SHA1

    479e08954d4d58b643ada84da280bd01c71e779a

  • SHA256

    32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08

  • SHA512

    f7effb9a12c0723ed336117e3399940d4fe9e3682eec18cdf19cf074dab27d2ce8b1c14d30f1e3e26b5883732f8b970477a32ca4c12fe36a8fa3bc452586511b

  • SSDEEP

    24576:40bAk9PkFMVNgsbj6d2dXrpcpZBWGyDs1lwBUeF:PEGNgsnHDIZB/yDseB

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .ehiz

  • offline_id

    94ZMASYQt4QGhpOo8gEwVMGuTvtKzw670thXUlt1

  • payload_url

    http://asvb.top/files/penelop/updatewin1.exe

    http://asvb.top/files/penelop/updatewin2.exe

    http://asvb.top/files/penelop/updatewin.exe

    http://asvb.top/files/penelop/3.exe

    http://asvb.top/files/penelop/4.exe

    http://asvb.top/files/penelop/5.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-IMhsjaUZQE 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: 0299ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 14 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.

  • Executes dropped EXE 2 IoCs
  • 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 4 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
    "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
      "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:864
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:3988
      • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
        "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2196
        • C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
          "C:\Users\Admin\AppData\Local\Temp\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:4992
  • C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
    C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe --Task
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2604
    • C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe
      C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe --Task
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1436

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    7fb5fa1534dcf77f2125b2403b30a0ee

    SHA1

    365d96812a69ac0a4611ea4b70a3f306576cc3ea

    SHA256

    33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f

    SHA512

    a9279fd60505a1bfeef6fb07834cad0fd5be02fd405573fc1a5f59b991e9f88f5e81c32fe910f69bdc6585e71f02559895149eaf49c25b8ff955459fd60c0d2e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    acca3be4c7c1891870b4fbcd16347536

    SHA1

    af13811987abdba634727b2716d36dd1fb26d764

    SHA256

    92cf65b998e8203d3d041da73cdbab39fa32fdc702d385b023f87bb052a1cd0d

    SHA512

    b69f41c393300497c9ea7a1fe86a7ab54540c8803fe7e9a2a1f3f1dd61e70f899bac7fb1519ffb1ea5f0001a252758264b66f0e3b1161c92bc13381bfe5afbe1

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    4588c8a4d366217b2eb455c38d4e4c5f

    SHA1

    4ad7c26aaa1d4d8dd286567a695894279288765b

    SHA256

    59e6d0ebfff590e960b15f79fffdc6f35a5f78cc8b238236af5d5aef2ea71a4f

    SHA512

    758b5028e094be802c8749bced251fff91fb46f5ea3bc0cbe89ee155159147f18d6c1cbc577c0011a92b94b1f1e57c33e9b206df23c5bee3e9f527cbc0450047

  • C:\Users\Admin\AppData\Local\a0556048-1976-41ca-9780-eb87649b24d9\32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08.exe

    Filesize

    844KB

    MD5

    a6f049a056e37a65280ddfe17f689b50

    SHA1

    479e08954d4d58b643ada84da280bd01c71e779a

    SHA256

    32b0fbaf95fefcc9b89243be8721625592fc9ed92d76a48cab263898fd3d5c08

    SHA512

    f7effb9a12c0723ed336117e3399940d4fe9e3682eec18cdf19cf074dab27d2ce8b1c14d30f1e3e26b5883732f8b970477a32ca4c12fe36a8fa3bc452586511b

  • memory/864-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/864-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/864-19-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/864-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/864-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1436-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1436-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2196-25-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/2196-21-0x0000000000400000-0x00000000004DC000-memory.dmp

    Filesize

    880KB

  • memory/2632-1-0x00000000022A0000-0x0000000002333000-memory.dmp

    Filesize

    588KB

  • memory/2632-2-0x0000000002340000-0x000000000245B000-memory.dmp

    Filesize

    1.1MB

  • memory/4992-26-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4992-24-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4992-33-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4992-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4992-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4992-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB