Analysis

  • max time kernel
    145s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-04-2023 20:00

General

  • Target

    92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe

  • Size

    734KB

  • MD5

    f57e7fccf0bcd56b6497a67654a00b6f

  • SHA1

    3fa7b4b8ee11c0cd9dbad6f20581315d68b57a9c

  • SHA256

    92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c

  • SHA512

    ec1fd7f8d42ec41eb91f782da1344daf1d8b947dd3a851fb205fc9a1d9a215f5728a0da7106a35fd2ed09f4380c0d5a369915af3e76dc2721c5300c3b6cc8be5

  • SSDEEP

    12288:Atg5af6cDh/ywouUImddiAFPSicN4xKT8QbmrddcjmQdJ1:Mg5I6qhJ14dicPS6YT8QqZc9

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 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
  • Checks computer location settings 2 TTPs 2 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).

  • Program crash 1 IoCs
  • 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.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe
    "C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4280
    • C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe
      "C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1688
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\13d1fd74-379b-4af8-a4d7-4a1c8d9258e6" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:3232
      • C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe
        "C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe
          "C:\Users\Admin\AppData\Local\Temp\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:540
          • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
            "C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1424
            • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
              "C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3968
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3968 -s 1884
                7⤵
                • Program crash
                PID:2300
          • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build3.exe
            "C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2044
            • 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:556
  • 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:2092
    • 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:4560
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3968 -ip 3968
    1⤵
      PID:3128

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    File Permissions Modification

    1
    T1222

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    3
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    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\LocalLow\Microsoft\CryptnetUrlCache\Content\07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
      Filesize

      2KB

      MD5

      0a0291b9bdf89c7e506366a8be70a80c

      SHA1

      a30ddab885654862ba0be0159155bc99945c053f

      SHA256

      31631ce5dfb41c09757fbd14367f9e46dc012eed1b8d462e933a34c102441272

      SHA512

      b0c29fd46693496d0bd726db2a615049c8cc2996bc38132a57878706a8ee022bbb964b3f9c9bb67e520a82f2144d352655287e015f3617c85fabf72f752e30d5

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

      1KB

      MD5

      b7263b275d39b35a30dc1c997259591b

      SHA1

      22ff18c6f51280d4b41361fbc36c8cc8134bd70c

      SHA256

      f9bf7b98d683c868daf9015ff946510adef6cdbe093bf3b30004bc3db0d5963a

      SHA512

      251cbce9f5dc25f83cf4c6542e87dbe232b740667b48b5eec5903fb0c3a6c4442841bd8021dc949bc719a874055cbffff0bb522635aae8c8e24817ee83a91506

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

      488B

      MD5

      88d59263672a523abe36c9613bfeb878

      SHA1

      cc361e93709b4b82819d92ee7f3d4e26b1fb4101

      SHA256

      196388fa7105d5ef285284f36c51c0d84c984ba008a3e14ed735eb128713dfc0

      SHA512

      041064ee1ff1c805ada249b9c1bdce9913a3950cdb6272c78a6de8e8c9bea653da5af79b7c35ba3e53db20f9f9d77bd7416db855d916006e8ae9b36615803f11

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

      482B

      MD5

      8fb3dff04c309a1e960f94e61c27774e

      SHA1

      d2c354298d656a1bba73b96e6bcc4e27beffcc69

      SHA256

      09690388737a3751965e05a2680ec6ec42404a29675f5435408aebcbd9b5e5d2

      SHA512

      e154520cf30c1151007db3a647a034e08550a507b9a3022696bbb9b67fb4e4a2271e18fedd8807269ddc14976005257a0c6317561f7c7afa9f5ac87a4d2e89ec

    • C:\Users\Admin\AppData\Local\13d1fd74-379b-4af8-a4d7-4a1c8d9258e6\92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c.exe
      Filesize

      734KB

      MD5

      f57e7fccf0bcd56b6497a67654a00b6f

      SHA1

      3fa7b4b8ee11c0cd9dbad6f20581315d68b57a9c

      SHA256

      92f300949b64286a0bd75f516473705cbadf67ddcae87c9b27f025f657a8442c

      SHA512

      ec1fd7f8d42ec41eb91f782da1344daf1d8b947dd3a851fb205fc9a1d9a215f5728a0da7106a35fd2ed09f4380c0d5a369915af3e76dc2721c5300c3b6cc8be5

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\2a69ade9-204c-42d7-817c-d03af3af7bda\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

    • memory/540-165-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-158-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-166-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-277-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-152-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-163-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-151-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-159-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-193-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/540-153-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1424-181-0x0000000000600000-0x0000000000657000-memory.dmp
      Filesize

      348KB

    • memory/1688-138-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1688-134-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1688-135-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1688-147-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/1688-137-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3968-208-0x0000000061E00000-0x0000000061EF3000-memory.dmp
      Filesize

      972KB

    • memory/3968-178-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-183-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-180-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-182-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-276-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-278-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-280-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3968-281-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/4280-136-0x0000000004AC0000-0x0000000004BDB000-memory.dmp
      Filesize

      1.1MB