Analysis

  • max time kernel
    149s
  • max time network
    156s
  • 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 13:50

General

  • Target

    1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe

  • Size

    743KB

  • MD5

    667f32aa7b259dec08674013a42d78ba

  • SHA1

    50cb3dbf6a9930ecf3a9ca9f50af3b12226941ec

  • SHA256

    1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979

  • SHA512

    7aa1ce88157ffdc496c7c9baa4a8821cea1eb92263da3da7607ebf066bc1c05049e79d091afd8987cd7238bcba85c73bc878bf39db594d59a54de47c386df934

  • SSDEEP

    12288:2O7tM4o6Xr6uYMzeAj9CKBx/qIf6LOQH9IdIJLgepioUTrHYDH0PCI9oNN+k0oY9:97tBevMtcKBJqTaQd4IJjwoUT0DUPCHR

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
  • 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\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
    "C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3348
    • C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
      "C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3880
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\0afd05c9-eb68-4971-8dff-02e4fc1fa525" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:976
      • C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
        "C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4496
        • C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
          "C:\Users\Admin\AppData\Local\Temp\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Checks computer location settings
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2032
          • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
            "C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:1224
            • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
              "C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:3960
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3960 -s 1596
                7⤵
                • Program crash
                PID:1312
          • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build3.exe
            "C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2920
            • 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:480
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3960 -ip 3960
    1⤵
      PID:4368
    • 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:1000
      • 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:4012

    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

    2
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Collection

    Data from Local System

    2
    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

      fa233b45db82551f99dbef0228a3230e

      SHA1

      d1282ccc021ce2016499fd755c71d49f2f353b6c

      SHA256

      f7b9fa61ba5a068a693c957b733c79279406494b069b1adef21a8ec2d22c6b2e

      SHA512

      398582cef2d630a75c9c0611c0dc376c667f551b8712c8dfeabf6b6eecef5ab33027fac59b1963ed44d82584dd171b3b832d389b043fd56368545418eaf05c62

    • 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

      dc02d55166f40a4b43ab2af6233ef891

      SHA1

      60dcb3855323c41e42c78a424c0c027ba4b0ab54

      SHA256

      b537592030dfce6069b1d3e29503ead49d3f11f8f6f8f9f86a01cf47121a5d1d

      SHA512

      637eab5eaa17dbd5e1638f1d3d95b4bca8aa4a38c92fb533f9b06d3701a8c32c4625f164e45adb8ada59a9bfeab0bc7462730197ea9c5bcb741cb0aede2b9567

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

      482B

      MD5

      938622f41fa18b50bceb3ae8d6a9237c

      SHA1

      72e0161ad34977710120e88bab96c431d3695012

      SHA256

      24b0689f184af470606fc2e5817fe88221d3dc3aa03d3cde1534ca66e4a3df22

      SHA512

      edcad813ccccdccf38caa2d6cb99ca9d930adda9bf3cf7e16d39e8ccead37e5bfa404a193012755f165fe52f2124256f454501b95b11fe1a8ca6a467014039c9

    • C:\Users\Admin\AppData\Local\0afd05c9-eb68-4971-8dff-02e4fc1fa525\1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979.exe
      Filesize

      743KB

      MD5

      667f32aa7b259dec08674013a42d78ba

      SHA1

      50cb3dbf6a9930ecf3a9ca9f50af3b12226941ec

      SHA256

      1a580f049a51caef8faa708561d48b4f55e5af53c71ce086424f49db014c2979

      SHA512

      7aa1ce88157ffdc496c7c9baa4a8821cea1eb92263da3da7607ebf066bc1c05049e79d091afd8987cd7238bcba85c73bc878bf39db594d59a54de47c386df934

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build2.exe
      Filesize

      324KB

      MD5

      d0eb40fe08f409805aed3f5312bfb5b8

      SHA1

      5f7942d58673854f01d25c3831efcba4182882e9

      SHA256

      2689a2c221cb723b4f35e912efa5c1f6df415d9f656b44c1c9cbbccf248ad1c6

      SHA512

      ad0925312dfb7f2ac82670b77c746920154dc2095553ef0df70c0a935bf4d0e31850bd6c4781cbd4e97fcc0a1bf3f918e977134b9d9101ed71088278a7b61e94

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\build3.exe
      Filesize

      9KB

      MD5

      9ead10c08e72ae41921191f8db39bc16

      SHA1

      abe3bce01cd34afc88e2c838173f8c2bd0090ae1

      SHA256

      8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

      SHA512

      aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

    • C:\Users\Admin\AppData\Local\b417f92a-bc36-4e94-84f6-f26a18de066f\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/1224-180-0x0000000000610000-0x0000000000667000-memory.dmp
      Filesize

      348KB

    • memory/2032-166-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-159-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-152-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-151-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-251-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-158-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-153-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-193-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-165-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/2032-163-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3348-136-0x00000000049A0000-0x0000000004ABB000-memory.dmp
      Filesize

      1.1MB

    • memory/3880-135-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3880-146-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3880-134-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3880-137-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3880-147-0x0000000000400000-0x0000000000537000-memory.dmp
      Filesize

      1.2MB

    • memory/3960-178-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3960-206-0x0000000061E00000-0x0000000061EF3000-memory.dmp
      Filesize

      972KB

    • memory/3960-247-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3960-248-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3960-183-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3960-181-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB

    • memory/3960-182-0x0000000000400000-0x000000000046C000-memory.dmp
      Filesize

      432KB