Analysis

  • max time kernel
    194s
  • max time network
    198s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/04/2023, 00:56

General

  • Target

    setup.exe

  • Size

    724KB

  • MD5

    2507457dc74ba35692289735b816bc33

  • SHA1

    fee3651f12fedaf4cd149dbfdd5da55ac773280e

  • SHA256

    28182eeef1af984a72678a4c52478d74f67c9729f4b1a4bc33c3068eead62255

  • SHA512

    ed1b32092b36673b2cca1650093478b340e00bbb2fa82730b526c142e174ac20eacbd03acbeb687ac03ecece07aabf1ef25f18bad1afa3f28566abf15538b7e2

  • SSDEEP

    12288:mKCPTMtiFp8UhZYW4Na3UMJMgY2cn/S7FnD/1CmgwOYIlPHcloW9WAPCvQf9/z:mKCPfFpLHAU3UCs/n/S7BD9Cx08P+F93

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .coza

  • offline_id

    O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1

  • 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-EPBZCVAS8s 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: 0693JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.5

Botnet

bf58e1879f88b222ba2391682babf9d8

C2

https://steamcommunity.com/profiles/76561199497218285

https://t.me/tg_duckworld

Attributes
  • profile_id_v2

    bf58e1879f88b222ba2391682babf9d8

  • user_agent

    Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Vivaldi/3.7

Signatures

  • Detected Djvu ransomware 17 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
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • 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
  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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).

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • 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
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup.exe
    "C:\Users\Admin\AppData\Local\Temp\setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2248
    • C:\Users\Admin\AppData\Local\Temp\setup.exe
      "C:\Users\Admin\AppData\Local\Temp\setup.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3784
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\b796d7ee-54c3-4761-b01f-ec990e1f5fc9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:536
      • C:\Users\Admin\AppData\Local\Temp\setup.exe
        "C:\Users\Admin\AppData\Local\Temp\setup.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3888
        • C:\Users\Admin\AppData\Local\Temp\setup.exe
          "C:\Users\Admin\AppData\Local\Temp\setup.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3964
          • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe
            "C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2516
            • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe
              "C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe"
              6⤵
              • Checks computer location settings
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4772
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:2680
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1956
          • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build3.exe
            "C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:3920
            • 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:1748
  • 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:1868
    • 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:4040

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\ProgramData\mozglue.dll

    Filesize

    593KB

    MD5

    c8fd9be83bc728cc04beffafc2907fe9

    SHA1

    95ab9f701e0024cedfbd312bcfe4e726744c4f2e

    SHA256

    ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

    SHA512

    fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

  • C:\ProgramData\nss3.dll

    Filesize

    2.0MB

    MD5

    1cc453cdf74f31e4d913ff9c10acdde2

    SHA1

    6e85eae544d6e965f15fa5c39700fa7202f3aafe

    SHA256

    ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

    SHA512

    dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe

    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe

    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe

    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build2.exe

    Filesize

    324KB

    MD5

    d0eb40fe08f409805aed3f5312bfb5b8

    SHA1

    5f7942d58673854f01d25c3831efcba4182882e9

    SHA256

    2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

    SHA512

    ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5632cd39-e7bf-420b-bb74-9dd7ad6d391f\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\b796d7ee-54c3-4761-b01f-ec990e1f5fc9\setup.exe

    Filesize

    724KB

    MD5

    2507457dc74ba35692289735b816bc33

    SHA1

    fee3651f12fedaf4cd149dbfdd5da55ac773280e

    SHA256

    28182eeef1af984a72678a4c52478d74f67c9729f4b1a4bc33c3068eead62255

    SHA512

    ed1b32092b36673b2cca1650093478b340e00bbb2fa82730b526c142e174ac20eacbd03acbeb687ac03ecece07aabf1ef25f18bad1afa3f28566abf15538b7e2

  • 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

  • memory/2248-135-0x00000000046A0000-0x00000000047BB000-memory.dmp

    Filesize

    1.1MB

  • memory/2516-186-0x0000000001F90000-0x0000000001FE7000-memory.dmp

    Filesize

    348KB

  • memory/3784-138-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3784-134-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3784-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3784-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3784-136-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-163-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-162-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-182-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-170-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-197-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-169-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-167-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-238-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4772-235-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-183-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-210-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4772-188-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-251-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-256-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-187-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-185-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-290-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-293-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-295-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4772-296-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB