Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    29/08/2023, 14:52

General

  • Target

    f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe

  • Size

    840KB

  • MD5

    4e5e22711345cdff9d935523e2340023

  • SHA1

    b09326b08b34a37e019ae1ed2443a1d68b73d60d

  • SHA256

    f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12

  • SHA512

    7a5a70c934806d367e0fcc436bb77468adf24575a668542d3756be9b780d6626fb08f99bb159285384d54079e3c9126ff957a2a85194131bda8590e21c2faedb

  • SSDEEP

    12288:qtdlPKCw75H6npi8Yqi6O15eKHzn8Ps/aAB1KMOcd44Fa3foDqbRPKJ:qVijF6nYCiQuz8PEaAnd44FaP/kJ

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test3/get.php

Attributes
  • extension

    .teza

  • offline_id

    fe7vbai057v1PzegcJrFdG7DjT3mL5gUtMQkLrt1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.com/files/1/build3.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-E4b0Td2MBH 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: 0773JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.4

Botnet

25f5344bfcb62e75b7946c3a681aec54

C2

https://t.me/vogogor

https://steamcommunity.com/profiles/76561199545993403

Attributes
  • profile_id_v2

    25f5344bfcb62e75b7946c3a681aec54

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.2.13 (KHTML, like Gecko) Version/16.5.2 Safari/605.2.13

Signatures

  • Detected Djvu ransomware 16 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • 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 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe
    "C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:8
    • C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe
      "C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4920
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\1dd9a321-7dd9-4f20-8f5d-b4df6d33b082" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2384
      • C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe
        "C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:768
        • C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe
          "C:\Users\Admin\AppData\Local\Temp\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3024
          • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe
            "C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1488
            • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe
              "C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:3516
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:4936
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:4344
          • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build3.exe
            "C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5068
            • C:\Windows\SysWOW64\schtasks.exe
              /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
              6⤵
              • Creates scheduled task(s)
              PID:3348
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    2KB

    MD5

    62d3b90788ae25549214190f8f4890dc

    SHA1

    7bdad7ac8551c9578a0bc56e20e7c5fe4bc5ec22

    SHA256

    b7d51340c5382f070fd4846e1d4360502db7edd89517ce4ad0d5c6ba2aa85904

    SHA512

    b4aaf8e0f5f9c964a554dc9f3cf7ba8fc789a896ed5c7ee0e994b358485f52ad03036a2744ca730a993807c4986e723bc849a0857cac4c9aee7cfaa226f4b968

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    1KB

    MD5

    484ccc9b0d219137029d48784f958d3a

    SHA1

    e8cd2b30290ae0b196d322669d3a7944ff6694c4

    SHA256

    d6349aa523fd3e8e3242f8abca778ce98e3c604f548cfe87d4641ac7e7951924

    SHA512

    c3240c9afbfc63050240ad111fbe30e9de48579b60fa5064e201447d9ba1babbf07955128ee6167c8a216bc7ed1fef2c4f4d649f63aae653fd0071ad0a7d520d

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D

    Filesize

    488B

    MD5

    23062385410baf2699c199880dea2ebd

    SHA1

    bc23ec4690a472db0d8e858fcbdd1bde2456b8b8

    SHA256

    edfaada1d3068c4fb12be997e8394456b0d2c62d16b0526c6619f9e67b90d96c

    SHA512

    4d4ce9817cb7c46c297a22d23f88af4f04aa14c0bd2cb763376cb58dda59707e90199117e7b97ac6be1fff82e996eeafad554d1c70f5befd0f9188227b0b3cc3

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

    Filesize

    482B

    MD5

    2b83b5d15e66e8554aab945b3d29e847

    SHA1

    ac89665f39841360ad42e6a1fc1eea853c1c7599

    SHA256

    059a13e49facd817225f91b59472b424e865befef270472ae717ac789e8406c6

    SHA512

    25a68a523e05c5c59b62ddd997ec2b957fede73ca942312e372abdbe438df7ab82bcff408c75c0d33b9adf7cdbd579df6b33230c5a4b27470b75021d292df25c

  • C:\Users\Admin\AppData\Local\1dd9a321-7dd9-4f20-8f5d-b4df6d33b082\f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12.exe

    Filesize

    840KB

    MD5

    4e5e22711345cdff9d935523e2340023

    SHA1

    b09326b08b34a37e019ae1ed2443a1d68b73d60d

    SHA256

    f4f1a59fb2ff044fa64232b1714b5c59b8390faa65a05a031949b2549c888f12

    SHA512

    7a5a70c934806d367e0fcc436bb77468adf24575a668542d3756be9b780d6626fb08f99bb159285384d54079e3c9126ff957a2a85194131bda8590e21c2faedb

  • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build2.exe

    Filesize

    396KB

    MD5

    a3d4e0b89f4210c0ad7d8df63ff21876

    SHA1

    06ae277ba8c0b747df2498add0fdaa3e8fbe5ebb

    SHA256

    3609c3cbb2bee674e91d44e4e49197c5403a33ac9649343feacedb5ca5759ef5

    SHA512

    dfd7395e1a7fe09e404ab76196a6ca5ff1bc7f880efab4e8126ccad451fc9699ad750ce195c98cc7f449c0bff69c693884c8b2307c75fab5f616a442cabb544a

  • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\fc4e6bcf-af41-4f21-92fb-9a2e107df2ea\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • \ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • \ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • memory/8-1-0x0000000004200000-0x000000000431B000-memory.dmp

    Filesize

    1.1MB

  • memory/8-0-0x0000000004160000-0x00000000041F1000-memory.dmp

    Filesize

    580KB

  • memory/8-4-0x0000000004160000-0x00000000041F1000-memory.dmp

    Filesize

    580KB

  • memory/768-19-0x0000000002720000-0x00000000027B1000-memory.dmp

    Filesize

    580KB

  • memory/1488-46-0x0000000001FA0000-0x0000000001FFC000-memory.dmp

    Filesize

    368KB

  • memory/1488-45-0x0000000002140000-0x0000000002240000-memory.dmp

    Filesize

    1024KB

  • memory/3024-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-36-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-62-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-23-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-69-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3024-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3516-50-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-67-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3516-51-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-49-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-47-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-109-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-110-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/3516-111-0x0000000000400000-0x0000000000471000-memory.dmp

    Filesize

    452KB

  • memory/4920-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4920-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4920-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4920-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4920-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB