Analysis

  • max time kernel
    147s
  • max time network
    133s
  • platform
    windows10-1703_x64
  • resource
    win10-20230831-en
  • resource tags

    arch:x64arch:x86image:win10-20230831-enlocale:en-usos:windows10-1703-x64system
  • submitted
    12/09/2023, 17:13

General

  • Target

    f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe

  • Size

    715KB

  • MD5

    4916c5795b15949f5885aeb496ee0f46

  • SHA1

    2c77957472652020032b1ec53ed4dad97ac4e060

  • SHA256

    f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5

  • SHA512

    689cf2b5b546253fac8a61bbae7f652b9bcf586e24df48106911e11c17d1cc3d0e58e295ddf69c2744ae40acc5939a918853e8bbd229ab117112d59c3f2fbb1a

  • SSDEEP

    12288:WrLUz0akQOp0kC7R/5i5aufRKVc6dQq6a3d+rISa4ZSg+nvEAkz/wCoF8SQ:Vz0akQOjC7R/5itpKzQo4IS9n+n5k4xS

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .oopl

  • offline_id

    dhL6XvokZotUzL67Na5WfNIBufODsob7eYc3mzt1

  • 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-XA1LckrLRP 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: 0782Okhu

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.6

Botnet

7b01483643983171e949f923c5bc80e7

C2

https://steamcommunity.com/profiles/76561199550790047

https://t.me/bonoboaz

Attributes
  • profile_id_v2

    7b01483643983171e949f923c5bc80e7

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36 OPR/103.0.0.0

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).

  • 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
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 53 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe
    "C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3284
    • C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe
      "C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\40eec7a8-300c-4fe9-92a3-4e5ff85a6ef3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:512
      • C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe
        "C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3576
        • C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe
          "C:\Users\Admin\AppData\Local\Temp\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4912
          • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe
            "C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2972
            • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe
              "C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe"
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4840
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\System32\cmd.exe" /c timeout /t 6 & del /f /q "C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe" & exit
                7⤵
                • Suspicious use of WriteProcessMemory
                PID:3112
                • C:\Windows\SysWOW64\timeout.exe
                  timeout /t 6
                  8⤵
                  • Delays execution with timeout.exe
                  PID:1844
          • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build3.exe
            "C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build3.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:5000
            • 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:2308
  • 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:4400
    • 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:4660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    8cb8f90ec602fd3a3e719cb78d8c7cce

    SHA1

    cdf764f8683ff175fb19bb0ed9e8765e28033e3b

    SHA256

    da35784b211cae7f4696f5b33b9b2ba9295bfa1016ad92ed28a3d588c1c84651

    SHA512

    939433b40ad73f85b50268616a1717dc3be47087450d7682b4dab5a657a4279a9a61d706b5e6fc24183995a27ab0803d704e0f2fde6e450d3b05d8b4c0bd6395

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

    Filesize

    1KB

    MD5

    9622537e51915638708894cb1125d8df

    SHA1

    9866d52f44d3eddd426d2125939aeaf4e4d7d5dd

    SHA256

    2dea83fc2e4deded477b919a973aac3082d7dc0d4dc1f213ea867245912b928c

    SHA512

    1a494c161fc0b2480863c80432bea118b9ea1973db86833c74cbb8342b561fea296f5235362417fb755c9bf9856337da5edf8284ab6dd41692c16f36b37f38a7

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

    Filesize

    488B

    MD5

    a77ef151d55b1a6c174faf507a2f828a

    SHA1

    181b6c828a604a53d9a7f77c1218c011097264ee

    SHA256

    abcdecef32957f7cdee9a9a5c7e87c9dd0661c27dcf755bc57094f028b3f0b77

    SHA512

    3fd0cd721e904bb817eaa3343698eb2bb8851150dcf54c8ab93bc78d5deb6549cdb41103f4607c7ac952d134e3c75f72d636e8da982e36fed8e7ba6817ebb436

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

    Filesize

    482B

    MD5

    5f51cffc10f29d440bfd79c3ca5b7e50

    SHA1

    e8ba43ba0b14b2156c479be337db68e653130789

    SHA256

    3d68f567670420c91fb8b03ce48ef34aec411c77a45bee6fc303789f80c1a714

    SHA512

    d47b88fb5431bb686bc846a0ef6fff7f91f69884a5b3cd87e0c2ed28f0ec31170f9306be6b2feb6034ca69a843e2a3445d9fbbc8cafc8b4855b1abb927c394ff

  • C:\Users\Admin\AppData\Local\40eec7a8-300c-4fe9-92a3-4e5ff85a6ef3\f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5.exe

    Filesize

    715KB

    MD5

    4916c5795b15949f5885aeb496ee0f46

    SHA1

    2c77957472652020032b1ec53ed4dad97ac4e060

    SHA256

    f13d51b350dca70e7fa2b8a5d418e1b27f0020b75f6ddc140300e7af7b028fc5

    SHA512

    689cf2b5b546253fac8a61bbae7f652b9bcf586e24df48106911e11c17d1cc3d0e58e295ddf69c2744ae40acc5939a918853e8bbd229ab117112d59c3f2fbb1a

  • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe

    Filesize

    426KB

    MD5

    d249cebde9fcfcddb47af02d6c10f268

    SHA1

    0c6a6a81326d9634b55e973cc4b0364693e9df53

    SHA256

    34e9b76c568bed90396850a59f181edb5233a045c1042fec1e29a42d8449cd40

    SHA512

    dfd33206b441eb51bd6c4544a11089d0f6754b124c43b7a33d6c7b3fd0de940df2e162337585dc7df66ac4ffb82fa404f140b877f531669bc84a9f8d1487a246

  • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe

    Filesize

    426KB

    MD5

    d249cebde9fcfcddb47af02d6c10f268

    SHA1

    0c6a6a81326d9634b55e973cc4b0364693e9df53

    SHA256

    34e9b76c568bed90396850a59f181edb5233a045c1042fec1e29a42d8449cd40

    SHA512

    dfd33206b441eb51bd6c4544a11089d0f6754b124c43b7a33d6c7b3fd0de940df2e162337585dc7df66ac4ffb82fa404f140b877f531669bc84a9f8d1487a246

  • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build2.exe

    Filesize

    426KB

    MD5

    d249cebde9fcfcddb47af02d6c10f268

    SHA1

    0c6a6a81326d9634b55e973cc4b0364693e9df53

    SHA256

    34e9b76c568bed90396850a59f181edb5233a045c1042fec1e29a42d8449cd40

    SHA512

    dfd33206b441eb51bd6c4544a11089d0f6754b124c43b7a33d6c7b3fd0de940df2e162337585dc7df66ac4ffb82fa404f140b877f531669bc84a9f8d1487a246

  • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\build3.exe

    Filesize

    9KB

    MD5

    9ead10c08e72ae41921191f8db39bc16

    SHA1

    abe3bce01cd34afc88e2c838173f8c2bd0090ae1

    SHA256

    8d7f0e6b6877bdfb9f4531afafd0451f7d17f0ac24e2f2427e9b4ecc5452b9f0

    SHA512

    aa35dbc59a3589df2763e76a495ce5a9e62196628b4c1d098add38bd7f27c49edf93a66fb8507fb746e37ee32932da2460e440f241abe1a5a279abcc1e5ffe4a

  • C:\Users\Admin\AppData\Local\5cfed013-96b7-4ef4-91a5-1947936961c7\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/316-17-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/316-6-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/316-5-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/316-3-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/316-2-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2972-46-0x0000000003FD0000-0x0000000004021000-memory.dmp

    Filesize

    324KB

  • memory/2972-44-0x0000000002430000-0x0000000002530000-memory.dmp

    Filesize

    1024KB

  • memory/3284-0-0x00000000021F0000-0x0000000002282000-memory.dmp

    Filesize

    584KB

  • memory/3284-4-0x00000000021F0000-0x0000000002282000-memory.dmp

    Filesize

    584KB

  • memory/3284-1-0x0000000003E60000-0x0000000003F7B000-memory.dmp

    Filesize

    1.1MB

  • memory/4840-108-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-109-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-110-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-48-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-45-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-49-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-50-0x0000000000400000-0x0000000000465000-memory.dmp

    Filesize

    404KB

  • memory/4840-71-0x0000000061E00000-0x0000000061EF3000-memory.dmp

    Filesize

    972KB

  • memory/4912-21-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-70-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-66-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-34-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-32-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-28-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-22-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/4912-20-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB