Analysis

  • max time kernel
    145s
  • max time network
    131s
  • platform
    windows10-1703_x64
  • resource
    win10-20230703-en
  • resource tags

    arch:x64arch:x86image:win10-20230703-enlocale:en-usos:windows10-1703-x64system
  • submitted
    06/08/2023, 11:55

General

  • Target

    ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe

  • Size

    784KB

  • MD5

    c50fbd798702af3c4fdd0e8420e996c3

  • SHA1

    3dd80d0a8fc13bf94680f5e16299ff637c68e9a2

  • SHA256

    ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a

  • SHA512

    39b8ddc33c61826b4f5f2d52c1d12519869d9caa5dddd7c61159bbe7dfdb8c51b14753745fc582b91bea0608cba543a228ce9852718d50113df60d2c3cdcab26

  • SSDEEP

    12288:y2g0Jn7r6EsHGG1rAhP/Cj8sM7caWVXEq2yW4qP9gjbu:y2pJn7roF1ru/+ZM7vWREq2ySsq

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .yyza

  • offline_id

    UcKp2U8xIAuhirf1rVzlXed6KBYXf0O1WXF2njt1

  • 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-xZJtZ8PDb2 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: 0758JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5

Botnet

183caee054f0a0bfc81780194d9bc7cb

C2

https://t.me/versozaline

https://steamcommunity.com/profiles/76561199532186526

Attributes
  • profile_id_v2

    183caee054f0a0bfc81780194d9bc7cb

  • user_agent

    Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0

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
  • 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).

  • Program crash 1 IoCs
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 47 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe
    "C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3532
    • C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe
      "C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2708
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\713f36e3-acc3-4ff8-a9d0-99cff210d5a5" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2360
      • C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe
        "C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1200
        • C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe
          "C:\Users\Admin\AppData\Local\Temp\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2272
          • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe
            "C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:4100
            • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe
              "C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              PID:3708
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 3708 -s 1808
                7⤵
                • Program crash
                PID:2476
          • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build3.exe
            "C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:2064
            • 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:400
  • 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:4924
    • 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:4980

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    8f6d719a731a81919966adfd66fcdb35

    SHA1

    68b8c89afa35e44f9b9fd86d0e7b493d4de64249

    SHA256

    f324be1b5a425aa263d3928d6551ba240ba5f83d043dfa2fc50fb609cea7dff3

    SHA512

    03dccd0aea89a16804a3e191b2b9b6e4a6733543d53e9a392218195f12d1d4a5feabc6f5bc8488b5eebeeadb7029bc78e534422b67edc6194a400bf05450ffb6

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

    Filesize

    1KB

    MD5

    14a0d00d33bdc46fb4d05e4c3e3ac5ab

    SHA1

    0da3a862589b17e055eac3699aafe7af9544152f

    SHA256

    55293d84425427d94b960127a9ca1c89dbbf9b4836f3f460d4034172760da440

    SHA512

    dc4c43466d402823660e7d0277e24f51494591288775ff30bd677efbf4e188f27069dd81c6ca220b7c57c0615d7238edbd43f54c193c9c90da3194111ef63652

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

    Filesize

    488B

    MD5

    050cb2c9ca892371dae8d52f3699fbf6

    SHA1

    2f4199ea1cffe08831090da76a6e68ccedc5bc4d

    SHA256

    70ffc11dff77b68cf29f969ccac9c2db10809dd66f6933b7d143888d93b4522a

    SHA512

    3ddfdb9c12c142f87e13f4bf6fc193196dee773a81a403a6d95404881a6baac27af0ced74e60d35983748f174766a1a6048657da1be9704fba0100b703902403

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

    Filesize

    482B

    MD5

    043c6ddfb334c647ba90755aadd5b81a

    SHA1

    42be3163324497cf1297283d1b326ef192be6801

    SHA256

    db0112bab7cf1b0dc4055e46f0029670baca4887062059dea386ec1819e15c8e

    SHA512

    faaeb7acc94289a0c6a088dba62faff9895454baf4929a769ae3ced7dc70d99930d53edb15b90b4cf8e2df9d57b1dbe2338b47d87d28814787683c6ed2539bea

  • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build2.exe

    Filesize

    449KB

    MD5

    304dcbfad357a684b36d2d639cdbc3eb

    SHA1

    428c58d8c86c49e28bc9958608817bf6a97dd780

    SHA256

    bd5aff6936d77e3deae4e45195b44ec5d4e7ba4f2a9dfe68ee7d6f7be2cfd97a

    SHA512

    8dd618a8a22c3e7f0f19287c6ca8135959f34f30a5d2e19f10f71c45a6b7c8c7dc0900b3e23c3ae479455cd1ce94a744c0841c26bde28f28ef8552130d465d43

  • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\3d64e43c-7e04-47b1-8e6e-3b7f4edbe2a0\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\713f36e3-acc3-4ff8-a9d0-99cff210d5a5\ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a.exe

    Filesize

    784KB

    MD5

    c50fbd798702af3c4fdd0e8420e996c3

    SHA1

    3dd80d0a8fc13bf94680f5e16299ff637c68e9a2

    SHA256

    ec25eb8ed981de408a3426fffa7b88109fdc0a421605243dc2bc8ada11d0ef7a

    SHA512

    39b8ddc33c61826b4f5f2d52c1d12519869d9caa5dddd7c61159bbe7dfdb8c51b14753745fc582b91bea0608cba543a228ce9852718d50113df60d2c3cdcab26

  • 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/1200-142-0x0000000004010000-0x00000000040B0000-memory.dmp

    Filesize

    640KB

  • memory/2272-159-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-145-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-158-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-144-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-151-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-146-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-175-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-152-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2272-192-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-127-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-128-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2708-139-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/3532-124-0x0000000004070000-0x000000000418B000-memory.dmp

    Filesize

    1.1MB

  • memory/3532-123-0x0000000003FD0000-0x0000000004070000-memory.dmp

    Filesize

    640KB

  • memory/3708-195-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/3708-174-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/3708-173-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/3708-172-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/3708-170-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/3708-232-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/3708-234-0x0000000000400000-0x000000000048B000-memory.dmp

    Filesize

    556KB

  • memory/4100-169-0x00000000023C0000-0x0000000002437000-memory.dmp

    Filesize

    476KB

  • memory/4100-168-0x0000000002440000-0x0000000002540000-memory.dmp

    Filesize

    1024KB