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Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows10-1703_x64
  • resource
    win10-20230220-en
  • resource tags

    arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
  • submitted
    17/04/2023, 16:17

General

  • Target

    4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe

  • Size

    712KB

  • MD5

    013e7b9f96797555fa6207a31ea66a60

  • SHA1

    3e2a7079228298bd9f2fb945fdfdb05f8b853660

  • SHA256

    4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5

  • SHA512

    e35ca6994ea20591cc2c8bfa44fc451bf795a25d39cb3744cd5fc9d598710b58de83a0f4ec726e8fca0e180b94c6cf056477634b8e2aa6c145cf78cf7ca27426

  • SSDEEP

    12288:RPuP9/88ARJ+twc4fWJ4RaRUAPe16hYCV3yGLYBgCKKthVavKXRlktNqk7:JuPtA+3oI4RaPPeIhYgQV/tavylktNf7

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .coza

  • offline_id

    O8Ao46dcCReRPC4I1PGMYsRFFc9WI5eOp0O3MFt1

  • payload_url

    http://uaery.top/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-bs3qPf67hU 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

3.4

Botnet

623db25256a5734d1207787d269d05b2

C2

https://steamcommunity.com/profiles/76561199494593681

https://t.me/auftriebs

Attributes
  • profile_id_v2

    623db25256a5734d1207787d269d05b2

  • user_agent

    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0

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
  • 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). Likely ransomware behaviour.

  • 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\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe
    "C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2908
    • C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe
      "C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4684
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\68538974-5cdd-4b34-827b-a239c12bb8ed" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:1376
      • C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe
        "C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3472
        • C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe
          "C:\Users\Admin\AppData\Local\Temp\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:944
          • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe
            "C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:800
            • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe
              "C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              PID:2964
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 1848
                7⤵
                • Program crash
                PID:3268
          • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build3.exe
            "C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:4784
            • 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:4308
  • 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:3324
    • 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:3296

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    2KB

    MD5

    68e313eea846d1d87e47b99bf9bd1b71

    SHA1

    e4fd3856cd8e50ada3fdc37c89019be2e5b13eea

    SHA256

    6c6b183ef044d7020900cee8b53150737c216a0d8e32132eeec39e762421229d

    SHA512

    6c08dedc56308eb2053b38e676abbd2f1c7a55dd56d88b1a580cedcb38f36db217d8f10f01484f13fad63f529ed896b85fd3e0443544ca9eea2ec667f8a89f88

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

    Filesize

    1KB

    MD5

    c5ef651a9650eb044382ba31a7fa140f

    SHA1

    c2e582dd129512948a7f5212e948705d932e212e

    SHA256

    a8663f9d52be9bbd3d781dbbe9d090f93236765c1f1d85d74f753ae62781389c

    SHA512

    0d3c06e233c0d00ad599aba749125b4c59f0405e455a2cdf01ea6e009e49544ed8d66c017fb4b09ece5ad6bf62599bcf86578ee46c5cffe79fa6c664c5726f09

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

    Filesize

    488B

    MD5

    9b863c47c55e296635c718ae000fb1a9

    SHA1

    21b3b0ad2f95fa5e7e7c2838191f8b0907bb947b

    SHA256

    0058fbaa3cb8e1dd32071b8547da69ffd4e3e2a8723872291116a5fd5b5cacfc

    SHA512

    a8881dbc53b9635b773c31a62a5f441f2a443145a47e7b76167f9847091bfcce7e9643acce2d467447d28ec4ff2877f973b90bd63c747bb5d03deaa8dbd4e0c7

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

    Filesize

    482B

    MD5

    1174a968c8df832dd132615d5baa7d50

    SHA1

    5016e208cce98fda30cfd03b705e55bd3ca84a36

    SHA256

    a137dde6c82a07c59155de900b2912d9c1517e6341de1065c3cd8dfcf70bfb5a

    SHA512

    25daa52192a8853b472d289b2ba1e5e53be47ae2d5b5e93216634e425a08b47fb57896f26e18f8a23c7bd18ded75e78950695641412f91b49c2a8fd1278125b1

  • C:\Users\Admin\AppData\Local\68538974-5cdd-4b34-827b-a239c12bb8ed\4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5.exe

    Filesize

    712KB

    MD5

    013e7b9f96797555fa6207a31ea66a60

    SHA1

    3e2a7079228298bd9f2fb945fdfdb05f8b853660

    SHA256

    4290b31446860013227642f5dffe2f8d449774f39c2e3a47b08b9f04df14a0b5

    SHA512

    e35ca6994ea20591cc2c8bfa44fc451bf795a25d39cb3744cd5fc9d598710b58de83a0f4ec726e8fca0e180b94c6cf056477634b8e2aa6c145cf78cf7ca27426

  • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe

    Filesize

    308KB

    MD5

    aa24958e84ca0a33c313d61d8d43a62d

    SHA1

    55aa402c9909828172adf99aef35ddaf25f016f5

    SHA256

    1cc37720fb14545fac7749d5da5a4cd975b0395bd48b376bc059d3af7c2155ea

    SHA512

    00612a24416fd76e77a3e1f24e55903043c12f8e58e833b2bf63d63be63a33064ae3fffab036b16b00099e085efb255b82a3449f79a077b7537120c253c35a66

  • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe

    Filesize

    308KB

    MD5

    aa24958e84ca0a33c313d61d8d43a62d

    SHA1

    55aa402c9909828172adf99aef35ddaf25f016f5

    SHA256

    1cc37720fb14545fac7749d5da5a4cd975b0395bd48b376bc059d3af7c2155ea

    SHA512

    00612a24416fd76e77a3e1f24e55903043c12f8e58e833b2bf63d63be63a33064ae3fffab036b16b00099e085efb255b82a3449f79a077b7537120c253c35a66

  • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build2.exe

    Filesize

    308KB

    MD5

    aa24958e84ca0a33c313d61d8d43a62d

    SHA1

    55aa402c9909828172adf99aef35ddaf25f016f5

    SHA256

    1cc37720fb14545fac7749d5da5a4cd975b0395bd48b376bc059d3af7c2155ea

    SHA512

    00612a24416fd76e77a3e1f24e55903043c12f8e58e833b2bf63d63be63a33064ae3fffab036b16b00099e085efb255b82a3449f79a077b7537120c253c35a66

  • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\7951947e-da3f-48df-88a4-ecb299dfe4e1\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/800-178-0x00000000020C0000-0x0000000002117000-memory.dmp

    Filesize

    348KB

  • memory/944-149-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-147-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-156-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-157-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-141-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-153-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-142-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-172-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-148-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/944-155-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2908-124-0x00000000023A0000-0x00000000024BB000-memory.dmp

    Filesize

    1.1MB

  • memory/2964-191-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/2964-177-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/2964-179-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/2964-180-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/2964-175-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/2964-230-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/2964-231-0x0000000000400000-0x000000000046C000-memory.dmp

    Filesize

    432KB

  • memory/4684-122-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-125-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-126-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-137-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4684-123-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB